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See detailCaractérisation de la race ovine Tazegzawth en Algerie: description morpho-biométrique et détermination d’une formule barymétrique
Moula, Nassim ULg; Philippe, François-Xavier ULg; Do Duc, Luc ULg et al

Poster (2013, October 11)

Le mouton Azegzaw est de robe blanche avec des taches noires à reflets bleuâtres sur le chanfrein, le pourtour des yeux et le lobe des oreilles. Non répertoriée par le standard des races ovines ... [more ▼]

Le mouton Azegzaw est de robe blanche avec des taches noires à reflets bleuâtres sur le chanfrein, le pourtour des yeux et le lobe des oreilles. Non répertoriée par le standard des races ovines algériennes, cette race présente pourtant des qualités intéressantes d'adaptation aux régions montagneuses de Kabylie, ce qui justifie la mise en œuvre d’un programme de conservation de ce patrimoine génétique original. L’objectif de cette étude, est (1) de caractériser la morpho-biométrie de moutons de race Tazegzawth et (2) de déterminer des équations barymétriques destinées à l’estimation du poids vif (PV) au départ des mensurations corporelles (périmètre thoracique: PT ; longueur du corps: LDC ; hauteur au garrot : HG ; hauteur à la croupe : HC). Au total, 89 sujets adultes (12 mâles, 77 femelles) sont concernés par cette étude. Les mensurations corporelles moyennes observées sont : - PV: 41,53±0,53 kg (mâle: 46,71kg et femelle: 40,72kg) ; - PT: 73,52±0,45 cm (mâle: 78,37cm et femelle: 72,77cm) ; - LDC: 89,10±0,44 cm (mâle: 93,82cm et femelle: 88,37cm) ; - HG: 71,40±0,43 cm (mâle: 76,06cm et femelle: 70,68cm); - HC: 70,14±0,42 (mâle: 74,80cm cm et femelle: 69,42). Les formules retenues pour l’estimation du PV sont: - Tous sexes confondus : PV=-0,025 HG2 + 4,78HG-169,88 (R2=0,87) - Femelles : PV = -0,038HG2 +6,58HG-232,39 (R2=0,84) - Mâles : PV = -0,16LDC2+0,21 HC2+284,92 (R2=0,99) En dépit de l’échantillon réduit dans l’étude, celui-ci a révélé des caractéristiques relativement homogènes. La détermination d’une formule barymétrique pourra venir en soutien d’une sélection incluant un objectif de croissance. [less ▲]

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See detailEvaluation of some production parameters in Kabyle local rabbit population
Moula, Nassim ULg; Michaux, Charles ULg; Do Duc, Luc ULg et al

Poster (2013, October 11)

In Algeria, the rabbit production is mainly based on local population to ensure a cheap supply of urban markets proteins. This sector may represent an important source of protein which is in large deficit ... [more ▼]

In Algeria, the rabbit production is mainly based on local population to ensure a cheap supply of urban markets proteins. This sector may represent an important source of protein which is in large deficit in the country. The rabbit production can be justified by its advantages such as short life cycle and high prolificacy. The objective of the present study is to evaluate production performances of Kabyle local rabbit population. Litter size, growth rate, body slaughter weight, feed conversion ratio and mortality rate are considered. The experiment was carried out on 30 animals (6 males and 24 females) for reproduction in the Ath Waghlis region (north-east Algeria). Rabbits have been raised in pens with 1 male and 4 females per pen. The commercial feed was supplied ad libitum to animals. Results reported shown that total number of rabbits born, number born alive, number to weaned, slaughter weight at 84 days of age, feed conversion ratio (from weaning to slaughter) and survival rate (from birth to slaughter) were 7.1, 6.1, 5.3 rabbits, 1.90kg, 3.16 and 73% respectively. The performances of the Kabyle breed could be improved by purebred selection as well as by crossing with exotic breeds. [less ▲]

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See detailEstimation of genetic parameters of racing traits of Arabian horses in Algeria
Tennah, Safia ULg; Kafidi, Nacereddine; Antoine-Moussiaux, Nicolas ULg et al

Poster (2013, August)

The results of the flat races organized in Algeria from 1995 to 2007 by the Algerian Horse Racing Society, were used to estimate genetic parameters of racing performances of Arabian horses. The data ... [more ▼]

The results of the flat races organized in Algeria from 1995 to 2007 by the Algerian Horse Racing Society, were used to estimate genetic parameters of racing performances of Arabian horses. The data consist of 36 492 race records, obtained from 913 horses. The pedigree file of the horses includes 1812 animals from 166 stallions and 392 mares. The analysis was performed on two traits: the logarithm of average annual virtual earnings per start (LAEV/S) and a normalized ranking (PERF). To identify the fixed effects to be included in the genetic model, a preliminary analysis was conducted using the General Linear Models (GLM) procedure from SAS software. The effects of age (3 to 8 years and older), sex (male or female), year (1995 to 2007) and the interaction between year of the race and age and between sex and age were included in the model for both traits. In addition, two random effects, a direct genetic effect of the animal and a permanent environmental effect were included in the mixed model. The variance components and genetic parameters were estimated by the restricted maximum likelihood (REML), procedure using the MTDFREML program. The analysis, using a repeatable animal model, led to the following estimation of genetic parameters: for LAEV/S, heritability was 0.23 (±0.04), while estimate of repeatability was 0.34 (±0.04). The heritability for the normalized ranking was higher, 0.37 (±0.05), indicating that this trait might be more appropriate for breeding programs of Arabian horses in Algeria. The repeatability estimate for the normalized ranking was 0.59 (±0.04) and the genetic correlation between this trait and LAEV/S was 0.79. [less ▲]

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See detailTools for surveillance system evaluation: Reviewing the need for participatory approaches
Calba, Clémentine; Grobois, Vladimir; Peyre, Marisa et al

Poster (2013, March)

While the need for effective animal health surveillance is widely recognised for diseases management, most veterinary services are facing significant budget constraints. There is a real need to develop ... [more ▼]

While the need for effective animal health surveillance is widely recognised for diseases management, most veterinary services are facing significant budget constraints. There is a real need to develop cost-effective surveillance systems. To ensure quality of these systems, there is a further need to design comprehensive, timely, effective and affordable evaluation frameworks. Depending on epidemiological, sociological and economic factors, animal diseases surveillance systems can be complex, likewise the choice of attributes to describe them and therefore the choice of methods and tools to evaluate them. Participatory approaches could provide the framework needed to tackle that complexity with sufficient flexibility. [less ▲]

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See detailEgg Production Performance of the Local Kabyle Hen and its Crossbreeds with ISA-Brown Strain in Semi-Intensive Conditions
Moula, Nassim ULg; Mamadou Tandiang, Diaw; Salhi, Abdellah et al

in International Journal of Poultry Sciences (2013), 12(3), 148-152

A cross between the ISA-Brown industrial strain and an Algerian local (Kabyle) breed was compared with the Algerian local (Kabyle) hen. The comparison during the egg production period was done in ... [more ▼]

A cross between the ISA-Brown industrial strain and an Algerian local (Kabyle) breed was compared with the Algerian local (Kabyle) hen. The comparison during the egg production period was done in individual cages, in a ventilated henhouse without any particular isolation. The same commercial diet has been provided over three time periods (35 to 36 weeks, 50 to 51 weeks and 65 to 66 weeks of age). Egg number and body weight at first egg was significantly lower in the Kabyle local breed. Mortality was almost equal during the breeding period and the egg production periods for the two genotypes. The Kabyle hen eggs, in spite of a weight which was lower (43.70 to 53.37 g according to the age), gave yolk to albumen ratio similar to the ISAKAB cross (0.52 to 0.58 according to age). Finally, the ISAKAB cross was better in terms of egg production and egg quality than the local hen, in test conditions. [less ▲]

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See detailThe social dimension of animal health surveillance system: an interdisciplinary approach of social pressure in the process of disease reporting in Northern Thailand.
Binot, Aurélie; Valeix, Sophie; Kovitvadhi, Attawit et al

Conference (2012, December)

In the framework of the CIRAD REVASIA research program, aimed at the improvement of methods for the evaluation of animal health surveillance systems, a interdisciplinary approach has been designed for ... [more ▼]

In the framework of the CIRAD REVASIA research program, aimed at the improvement of methods for the evaluation of animal health surveillance systems, a interdisciplinary approach has been designed for addressing surveillance‘s social factors at local level. To that purpose, methodological inputs from epidemiology, economics and anthropology have been merged together in order to provide an innovative methodological pathway for the assessment and quantification of these factors at community level. Regarding the onset of the desired interdisciplinary approach, the first step was to bring the researchers into several brainstorming sessions aimed at defining a shared scientific and operational objective for this study. It was decided to settle two field sites in two different political, economical and social contexts: one in Vietnam and one in Thailand. Then, the next step was to bring all the concerned researchers into a common workshop dealing with participatory approaches applied to epidemiology. One of the main outcomes was to allow for the handling by the investigators of basic participatory investigation and visualization tools (mapping, diagrams, proportional piling, etc.) and qualitative data gathering. Then, the two field inquiry’s protocols were designed on the economical process at play in the field of livestock and animal health and the social and socio-­‐political dynamics at the community level. This communication will focus on the Thailand study, showing how an anthropology-­‐based study of the social, economical and political process in the community can highlight behavior rules in the context of animal diseases reporting. Indeed, the decision-­‐making process for reporting or not reporting a disease has been considered beyond the individual, as the result of a body of community influences referring to social factors. Thus, we have gone through a better understanding of (1) the community’s functioning patterns, (2) power relationships at play and social stakeholders’ networks and interactions (economical stakes, land tenure issues, political control etc.). In parallel, we showed some trends for health management practices and knowledge. The outputs of this study were an analysis of the social pressure that the stakeholders are subjected to in the framework of animal health management, a better understanding of the animal health information spreading scheme, and a typology of social stakeholders regarding surveillance. The research process, even if focusing on social and anthropological dynamics at play was interdisciplinary from the very beginning, merging together qualitative participatory investigation methods from sociology and economics, modeling and computer sciences, and epidemiology. Thus, pathways of individual motivation for reporting, based on social types, have been provided in order to highlight behavior rules associated to animal health surveillance systems. [less ▲]

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See detailParticipatory approaches for evaluating surveillance systems: insights from a training- related study from Vietnam
Antoine-Moussiaux, Nicolas ULg; Vu, M.Q. Giao; Delabouglise, Alexis et al

Conference (2012, December)

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See detailEconomic impact of RVF outbreaks
Antoine-Moussiaux, Nicolas ULg; Chevalier, Véronique; Peyre, Marisa et al

Conference (2012, November)

Dwarfing the direct losses due to ruminant abortions and flock mortality, the main economic impact of RVF is systemic and ensues from the trade restrictions aimed at its containment. Indeed, past ... [more ▼]

Dwarfing the direct losses due to ruminant abortions and flock mortality, the main economic impact of RVF is systemic and ensues from the trade restrictions aimed at its containment. Indeed, past outbreaks of RVF in East Africa and Middle East came as disturbing events in a commercial context of high specialization in trade of small ruminants and interdependence between East-African exporters and the Middle-Eastern importing countries. The two successive bans imposed by Middle-Eastern countries on livestock products coming from the Horn of Africa in 1998-1999 and 2000-2002 highlighted this interdependence. Both bans caused an abrupt stop in exportations from IGAD countries. Nevertheless, the impact of the outbreaks motivating these bans differed due to their unique timing with regard to the Muslim celebrations that trigger the main flow of livestock from the Horn of Africa to Mecca. Hence, in 2000, the worst impact was observed on pastoralist households because the ban was imposed in September, prior to the Haj festival, when the main seasonal export flow had not been realized yet. Regarding the 1997 outbreak, the ban was implemented only in February 1998, after the main trade flow had occurred. The impacts of the bans on Somalia were particularly severe, due to the high specialization of the concerned region in an export-oriented livestock sector, benefitting from a niche market organized around the above-mentioned religious festivals and Arab consumers preferences. The country was all the more affected, as they own two main ports involved in this trade, i.e. Berbera (Somaliland) and Bossaso (Puntland). Prior to the bans, the size of the export market from Somalia to Saudi Arabia and the United Arab Emirates was estimated around US$600 million, with Saudi Arabia representing 66% of the total. The bans led the Somali livestock market to collapse. Losses for the livestock industry were estimated at US$109 million and US$326 million, for the first and second ban respectively. The government also directly incurred an important loss around US$45 million from foregone export taxes and docking fees. In the same time, livestock exporters lost a net cumulative profit of US$330 million, whereas producers estimated their annual losses at over US$8 million. Hence, the successive RVF-related trade bans impacted the employment rate, the public treasury, the exchange rate of national currency and thus, the price of imported goods, inducing a general inflationary pressure and important socio-economic upheavals. More generally, the livestock market in the whole East Africa was affected, due to the fall in prices caused by the loss of outlets for livestock. Using market equilibrium models taking these shocks into account, the impact of the trade bans on the Somali region of Ethiopia were estimated at a 36% fall of the GDP. Other impacts originated in the closure of markets inside East Africa, being part of national control strategies. In Kenya, e.g., the closure of the Garissa Market, which is a major outlet for Somali and Ethiopian livestock, resulted in a more than 25% decrease in the price of cattle, inducing a total loss of US$10 million for the value chain. The emergency destocking response of distressed households also participated to the fall in prices and worsening of terms of trade. Together with flock mortality and abortion, destocking moreover affects the herds’ dynamics on the long run and the commercial potential of households. These mechanisms show greater impact on smallholders, due to threshold effects in livestock capitalisation and the loss in risk management ability in such variable environmental conditions. In the Middle East too, the bans showed drastic economic impacts. In Yemen, e.g., the bans caused a loss of US$15 million from foregone custom taxes and US$27 million profit losses for traders. The two bans, combined with the prolonged ban maintained till 2009 by Saudi Arabia on Somalia, contributed to a restructuration of trade within and between the two regions. Indeed, trade actors soon reorganized their activity, as highlighted through official figures, notwithstanding the importance of informal trade. Hence, Yemen and the United Arab Emirates appeared as major alternative entry points on Arab Peninsula for Somali livestock. The latter could also transit through Djibouti or Sudan to reach Saudi Arabia. Benefitting from the prolonged bans on Somalia, the port of Djibouti emerged as a major player in the region between 2006 and 2009, thanks to massive investment in port infrastructures and agreements with Saudi importers. Therefore the private sector played a considerable role in adapting to new risks. The Djibouti port diverted much of the livestock trade previously handled at the Berbera and Bossaso ports. On this occasion, as it has been the case in Somalia after ban lifting in 2009, the Middle East has been a source of investment for the Horn of Africa for biosecurity infrastructure. Finally, the second ban led to the emergence of Australia as a major livestock supplier for Saudi Arabia from 2000 till now, and to a certain a point Australia has been a country of major Saudi investments which is seen as another way of adapting for some major value chain agents. In the two last decades, the intraregional livestock trade grew rapidly in East Africa, spurred by the urban demand. Most of this trade is informal, thus lacking official figures. It nevertheless shows a great importance regarding poverty alleviation aspects, the small to medium actors being the main operators of this trade. In recent years, a considerable growth in recorded intraregional trade is noticed, mainly due to a growth of recorded exports from Ethiopia to neighboring countries, as a result of a policy aiming at the facilitation of registration procedures through the CAC/AP-system. As a conclusion, livestock export to Middle East and the growing intraregional East-African livestock trade are both threatened by RVF-linked bans due to loss of outlets and price volatility. Thus, stability of the livestock sector being crucial to human and economic development in the region, a high priority must be given to RVF prevention and control, as supported by figures of impact of past outbreaks. [less ▲]

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See detailCaractérisation du mouton Koundoum du Niger : description morphobiométrique et détermination d'une formule barymétrique
Hamadou, Issa ULg; Marichatou, Hamani; Moula, Nassim ULg et al

Poster (2012, October 20)

La race Koundoum, un des rares moutons à laine du Sahel, est victime des croisements avec d’autres races plus productives et de la dégradation de son biotope originel, le fleuve Niger. Cette race possède ... [more ▼]

La race Koundoum, un des rares moutons à laine du Sahel, est victime des croisements avec d’autres races plus productives et de la dégradation de son biotope originel, le fleuve Niger. Cette race possède des qualités intéressantes d'adaptation au milieu et de production de laine, qui justifient la mise en œuvre d’un programme de conservation de ce patrimoine génétique original. Dans cette optique, notre étude vise à la caractérisation de la race Koundoum afin d’établir les fondements d’un plan pour sa conservation. Il a ainsi été procédé à la caractérisation morpho-biométrique de moutons de race Koundoum auprès de 26 éleveurs, principalement de la commune de Kourteye. Au total, l’étude a porté sur 147 sujets (45 mâles, 102 femelles), dont 56 de moins d’un an. La couleur de robe noire domine (62,6%), suivie de la couleur blanche (27,9%). Les pendeloques sont présentes chez 40,0% des mâles et 26,5% des femelles. Presque tous les béliers portent des cornes (95,6%) contre 3,9% des brebis. Le périmètre thoracique a été retenu pour l’estimation d’une équation barymétrique en raison de sa forte corrélation avec le poids (R2 = 0,88). Des formules de prédiction du poids ont pu être proposées selon le sexe et l’âge. En dépit du manque de contrôle des croisements par la majorité des éleveurs inclus dans l’étude, l’échantillon a révélé des caractéristiques relativement homogènes. La détermination d’une formule barymétrique pourra venir en soutien d’une sélection incluant un objectif de croissance. [less ▲]

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See detailCritères d’appréciation des reproducteurs en systèmes d'élevage traditionnel du zébu Azawak dans les zones d’Abalak, Filingué et Niamey (Niger)
Siddo, Seyni ULg; Moula, Nassim ULg; Marichatou, Hamani et al

Poster (2012, October 19)

Au Niger, le zébu Azawak fait l’objet d’un programme de sélection au sein de la Station de Toukounous, créée en 1954. Si de substantiels progrès en termes de production individuelle ont été atteints, ce ... [more ▼]

Au Niger, le zébu Azawak fait l’objet d’un programme de sélection au sein de la Station de Toukounous, créée en 1954. Si de substantiels progrès en termes de production individuelle ont été atteints, ce matériel génétique nécessite d’être diffusé à travers le pays. Cette étude caractérise les critères d'appréciation des géniteurs Azawak auprès de 120 éleveurs d’Azawak non-améliorés au sein de trois contextes d’élevage différents: pastoral (Abalak, n=38), agricole (Filingué, n=54) et périurbain (Niamey, n=28). Près de 65,5% des éleveurs interrogés apprécient l’Azawak pour sa production laitière, sa valeur socioculturelle, l’esthétique de la robe, la facilité d'engraissement et sa docilité pour la traction. Les motifs mentionnés par les 34,5% d'éleveurs affirmant ne pas apprécier le zébu Azawak amélioré sont son exigence en compléments alimentaires et en soins vétérinaires et son inadaptation à la transhumance. Les critères majeurs du choix du géniteur sont la longueur de la queue (60,0%), la grosseur du fourreau (58,2%), la performance laitière des descendants (55,0%), ainsi que leur bonne conformation (48,3%) et leur docilité (46,7%). La réforme des mâles par l’éleveur est dictée par le comportement d'errance (67,7%), l'indocilité (51,9%) et la mauvaise conformation des descendants (42,6%). Les déterminants de l’appréciation des reproducteurs par les éleveurs sont le fondement des objectifs et critères de sélection. L’inadéquation entre les deux résulte en une absence de diffusion du matériel amélioré. La compréhension de ces contraintes à la diffusion permettra leur prise en compte au niveau du programme de sélection ou des autres services d’élevage. [less ▲]

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See detailSelection criteria as used by owners-breeders of racehorses in Algeria
Tennah, Safia ULg; Farnir, Frédéric ULg; Kafidi, Nacereddine et al

Poster (2012, October 19)

Due to positive externalities and the need to work on a large scale, animal breeding is usually carried out by breeders associations or states. In Algeria, racehorse breeding is in the hands of ... [more ▼]

Due to positive externalities and the need to work on a large scale, animal breeding is usually carried out by breeders associations or states. In Algeria, racehorse breeding is in the hands of unorganized breeders-owners. Through a survey conducted with 461 owners-breeders between 2009 and 2011, this study investigates their perceptions, objectives and practices regarding selective breeding. Racehorse breeding is a full-time professional activity for a third of interviewees. The holdings are small-sized with 77% owning one or two mares. The regular practice of insemination could categorize breeders according to their professionalization (38.4% professional vs. 61.6% occasional breeders). Seniority in the sector was also used to classify breeders, considering as “young” the breeders under 10 years experience (38.8%) and as “senior” those above 10 years (61.2%). More than professionalization, seniority shows a significant impact on practices and objectives. Thus, seniority influences breed choice (young breeders tend to specialize while senior own both Arabian and Thoroughbreds; p<0.001), age at first foaling (sooner among senior breeders; p<0.01), information sources considered for selecting stallions (senior use more diversified sources; p<0.01), the importance granted to the price of insemination (greater for the young breeders; p<0.001), the importance granted to the ranking compared to earnings (the ranking being more important to young breeders, p<0.001), and the priority given to breeding (young breeders give rather priority to a buy-race-resell activity; p<0.001). Finally, racehorse breeding in Algeria is poorly professionalized, the only financial goal being cost coverage. Despite inappropriate practices, an interest for selection is noticed. [less ▲]

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See detailEvaluation of the non-genetic factors of the racing performances of Arabian horses in Algeria
Tennah, Safia ULg; Kafidi, Nacerredine; Antoine-Moussiaux, Nicolas ULg et al

Poster (2012, October 19)

Selective breeding of Arabian horses in Algeria is not yet well developped. No accurate estimation of the breeding values of racing horses is carried out untill now. The estimation is based on one or ... [more ▼]

Selective breeding of Arabian horses in Algeria is not yet well developped. No accurate estimation of the breeding values of racing horses is carried out untill now. The estimation is based on one or several measurable traits, linked to race performance. To allow for an accurate estimation, it is important to determine the part of the phenotypic variability that is due to non-genetic factors (environmental). This first study estimates phenotypic correlations between the recorded traits in order to deduce to what extent the different measures bring different information on animal performance. Then it estimates the influence on performance of non-genetic factors such as sex, age, year of performance and the interactions between these various factors. From 1995 to 2007, the data related to flat racing was collected. The General Linear Model was used to identify and quantify the non-genetic factors affecting racing performances. Three traits were used: two earnings traits (the logarithm of annual virtual earnings: LAEV and the logarithm of average annual virtual earnings per start: LAEV/S), and one ranking trait (the ranking transformed and normalised: PERF). Significant high positive correlations was observed between the three traits (p<0.001), which thus give account of similar informative aptitudes. The effects of sex, age, year as well as the interactions between age and sex and between age and year turned out to be significant for the three traits (p<0.05). These results indicate the need to adjust the earnings and ranks traits in order to use them as criteria of selection of racing Arabian horses. [less ▲]

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See detailCaractérisation des performances d’élevage et de production de deux variétés de la race Ardennaise
Moula, Nassim ULg; Michaux, Charles ULg; Philippe, François-Xavier ULg et al

Poster (2012, October 19)

La poule Ardennaise est une race emblématique de la biodiversité avicole belge. Dans un contexte mondial favorable à la conservation des races locales d’animaux domestiques, cette étude est consacrée à la ... [more ▼]

La poule Ardennaise est une race emblématique de la biodiversité avicole belge. Dans un contexte mondial favorable à la conservation des races locales d’animaux domestiques, cette étude est consacrée à la comparaison de deux variétés de la race Ardennaise (Noire dorée et Noire Argentée). La comparaison est réalisée par le biais de trois études: (1) caractérisation morpho-biométrique des deux variétés; (2) caractérisation de la croissance et de la qualité de la carcasse et de la viande; (3) suivi du taux de ponte pendant 52 semaines et l’étude de la qualité des œufs à 30, 45, 60 et 75 semaines d’âge. Des différences significatives ont été enregistrées au niveau des poids corporels, du grand diamètre du tarse, de la longueur du tarse et de la taille de la crête des deux variétés. La variété de la poule Ardennaise n’influence pas significativement les caractères quantitatifs et qualitatifs de production de viande (rendement, poids après abattage, pH, couleur de la viande). Elle influence cependant significativement le poids de l’œuf entier, le poids du blanc, le pourcentage du blanc, le pourcentage du jaune, le rapport jaune/blanc et le pH du blanc (p<0,05). Pour plusieurs caractères morphologiques, d’engraissement et de ponte, les deux variétés ne présentent aucune différence significative. Il serait intéressant de compléter cette étude par une analyse moléculaire permettant de préciser le degré de similitude génétique entre les deux variétés et éventuellement avec les autres variétés de la race. [less ▲]

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See detailRessources génétiques animales en Kabylie (Algérie)
Moula, Nassim ULg; Iguer-Ouada, Mokrane; Touazi, Leghel et al

Poster (2012, October 19)

La Kabylie est une région côtière montagneuse du nord-est algérien. Ce poster présente les principales espèces et races élevées dans cette région. Les ovins sont représentés par la race Tazegzawt ... [more ▼]

La Kabylie est une région côtière montagneuse du nord-est algérien. Ce poster présente les principales espèces et races élevées dans cette région. Les ovins sont représentés par la race Tazegzawt, répertoriée récemment. Elle est reconnaissable à ses tâches noires à reflets bleuâtres, son nom kabyle signifiant bleu. Son poids peut dépasser 30 kg à 6 mois. La population locale de chèvres n’a pas fait l’objet de descriptions. Toutefois, la chèvre locale est adaptée aux massifs montagneux. Elle est de petite taille avec un poids vif d’environ 25 kg. Elle présente de longs poils et différentes couleurs de robe. La race bovine locale est issue de l’adaptation de la race brune de l’Atlas à un climat tempéré. Elle possède un petit gabarit (de 250 à 300 kg) et une robe grise ou allant du fauve brunâtre au rouge-brun. Par l’industrialisation de la production de volailles, les poules locales ont subi une érosion génétique sévère. Elles présentent ainsi une grande variabilité phénotypique et sont de taille moyenne (autour de 1,5kg). Le lapin local connaît une situation similaire et présente un poids de 2 à 3 kg. Il existe une tradition apicole importante en Kabylie. Les types d’abeilles exploitées ne sont toutefois pas encore caractérisés. Toutes les races citées ici sont menacées par le croisement ou l’abandon. Leur caractérisation génétique et zootechnique est nécessaire pour l’amélioration des systèmes de production familiaux, plus particulièrement en régions montagneuses, et la conservation de la biodiversité. [less ▲]

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See detailQuality characteristics of marketed eggs in Basse Kabylie (Algeria)
Moula, Nassim ULg; Philippe, François-Xavier ULg; Ait Kaki, Asma ULg et al

Poster (2012, October 19)

Quality variations of retailed eggs are widely reported. This study aims at assessing the quality of eggs according to the marketing channel in the department of Bejaia (Algeria). In spring and summer ... [more ▼]

Quality variations of retailed eggs are widely reported. This study aims at assessing the quality of eggs according to the marketing channel in the department of Bejaia (Algeria). In spring and summer 2012, a total of 3330 eggs were bought in 30 stores divided into 3 categories: 10 supermarkets (1146 eggs), 10 public markets (1048 eggs), and 10 shops (1136 eggs). The eggs weights differed significantly with the marketing channel with 58.9±0.14, 61.2±0.13 and 62.8±0.13 g for public markets, shops and supermarkets, respectively (p<0.001). Although the shell thickness was similar for all marketing channels, the proportion of damaged eggs was higher in public markets (9.0%), intermediate in shops (7.3%) and lower in supermarkets (5.7%; p<0.05). The yolk/albumen ratio was significantly higher for eggs from supermarkets (48.1%) compared to the other channels (around 47.4%; p<0.05). The freshness of the eggs, measured by the Haugh method, was lower in public markets (74.3 units), intermediate in shops (77.6 units) and higher in supermarkets (79.9 units; p<0.05). The price of eggs, expressed in Algerian Dinar (AD) per kg, was significantly lower in public markets (124 AD/kg) compared to the two other channels (around 131 AD/kg; p<0.05). One can conclude that egg quality in Basse Kabylie differs significantly between marketing channels with higher quality observed in supermarkets. The lower quality of eggs in public markets is associated with lower price. Eggs from shops present an intermediate quality. A one-year study would allow studying both the potential seasonal effect and compare intrinsic variability across marketing channels. [less ▲]

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See detailAssessment of non-genetic parameters of the racing performances of Arabian and Thoroughbred horses in Algeria
Tennah, Safia ULg; Kafidi, Nacer; Antoine-Moussiaux, Nicolas ULg et al

in African Journal of Biotechnology (2012)

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See detailComparative evaluation of local poultry breeds status in Algeria, Vietnam and the Democratic Republic of Congo
Moula, Nassim ULg; Farnir, Frédéric ULg; Abdellah, Salhi et al

in The Role of Poultry in Improving Human Welfare (2012, September)

Local chicken breeds contribute significantly to the world production of meat and eggs. Indigenous breeds represent 80% of the world poultry population. However, the majority of these breeds has not been ... [more ▼]

Local chicken breeds contribute significantly to the world production of meat and eggs. Indigenous breeds represent 80% of the world poultry population. However, the majority of these breeds has not been recorded and studied. About 40% of poultry breeds have an unknown risk status. Hence, considerable efforts are necessary to evaluate them. Obviously, managing animal genetic resources requires the identification of the concerned phenotypes, population sizes, their geographical distribution, and their genetic diversity within and between breeds, using molecular biology methods. Nevertheless, the thorough understanding of the breeding contexts within which they are found is an oft-neglected prerequisite to set up sustainable management strategy of these resources. In the framework of our studies, the characterization of local poultry populations and their breeding systems have been carried out in Northeastern Algeria, Northern Vietnam and Southwestern Congo (DRC). A large phenotypic diversity has been revealed in each region of study, contributing different insights into the concept of local breed. The breeding systems have in common multiple objectives (nutritional, financial, and socio-cultural). Women and children played an important role in family poultry farming. The latter elements are, however, subject to variations between the regions of study and within them. Thus, solutions aiming at the promotion of biodiversity in poultry need to be tailored in accordance with the uniqueness of each breeding context. [less ▲]

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