References of "Hornick, Jean-Luc"
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See detailEffect of bovine colostrum intake on growth, reproductive parameters and survival in red kids
Harouna, Abdou; Marichatou, Hamani; Beckers, Jean-François ULg et al

in Journal of Animal Physiology & Animal Nutrition (in press)

The aim of this study is to evaluate the efficacy of frozen Azawak colostrum supplementation on body weight (BW), average daily gain (ADG), reproductive parameters (mean age at first parturition ... [more ▼]

The aim of this study is to evaluate the efficacy of frozen Azawak colostrum supplementation on body weight (BW), average daily gain (ADG), reproductive parameters (mean age at first parturition, fertility, fecundity, prolificacy) and mortality rate among red kids. The study was conducted at the goat farm secondary centre of Maradi in Niger from September 2010 to September 2011. The control animals (n = 20) were left with their mother, while the treatment animals (n = 20) received in addition 50 ml/animal/day of bovine colostrum at birth and 15 ml/animal/day from d2 to d15. Weight was measured weekly from birth to d365. Mortalities were also recorded over the same period. For reproductive parameters, observations began at weaning (d197). Growth rate was higher (p < 0.001) in supplemented animal, and the treatment effects on ADG were observed up to 150 day after the end of supplementation. A similar long-lasting trend was also observed in relation to the mortality rate (25% for ColG vs. 55% for ConG; p = 0.05). The age at first kidding tended to be lower in the treated group (13.8 0.7 vs. 14.1 0.8 month; p < 0.1). In conclusion, mild bovine colostrum supplementation induces a long-lasting positive impact on growth rate and to a lower extent on reproduction parameters and survival rate. [less ▲]

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See detailChemical composition of colostrum from Azawak cow in Niger compared with meta-analytical data
Abdou, Harouna; Marichatou, Hamani; Beckers, Jean-François ULg et al

in Animal Genetic Resources Information = Bulletin d'Information sur les Ressources Génétiques Animales = Boletin de Informacion sobre Recursos Geneticos Animales (in press)

This study aimed at comparing data obtained from Azawak zebu colostrum with literature data. The comparison was performed by a meta-analytical approach. Colostrum samples were hand-collected after 5 h ... [more ▼]

This study aimed at comparing data obtained from Azawak zebu colostrum with literature data. The comparison was performed by a meta-analytical approach. Colostrum samples were hand-collected after 5 h from 7 Azawak cows at calving between August 27, to September 10, 2009 in the Sahel. For data from literature, twenty one (21) references were identified in the following analytical databases: PubMed, Science Direct, Google scholar, Collection from University of Liege. The references were selected according to the following two criteria: i) only studies reported on bovine colostrum were used irrespective of breeds, and ii) among the selected studies, those not providing complete information to allow meta-analytical calculation were excluded. Samples were analyzed for immunoglobulins (IgG, IgM, IgA), lactoferrin, and chemical composition (dry mater, protein, fat, lactose, ash, Ca, P, NA, K, Mg). The mean levels of IgG, IgM, dry matter, protein and fat for Azawak cows were lower (P ˂ 0.001) than those obtained in other breeds; however colostrum from the Azawak was higher in IgA but the difference was not significant. For lactose and ash, mean values for Azawak cows were higher (P ˂ 0.001) than those from the literature. Contents of Ca, P, Na and Mg in Azawak bovine colostrum were significantly higher (P ˂ 0.001) than the mean levels in form the literature data. In conclusion, the colostrum from Azawak cows appears to be lower in most immunoglobulins, in fat and in protein than the values reported in the literature, but higher in lactose and minerals. This could be an adaptation to sahelian contraints. [less ▲]

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See detailEffect of improved feeding and housing, Friesian blood level and parity on milk production of Ankole x Friesian cows
Kibwana, Denise Katungu; Makumyaviri, A.M.; Hornick, Jean-Luc ULg

in Pakistan Veterinary Journal (in press)

In North Kivu, D.R. Congo, cattle are raised in extensive systems based on local breeds and crossbreds. This farming method affects the performance of dairy animals and mortgages the level of milk ... [more ▼]

In North Kivu, D.R. Congo, cattle are raised in extensive systems based on local breeds and crossbreds. This farming method affects the performance of dairy animals and mortgages the level of milk consumption in population. An improved farming system, including feed supplementation, Friesian cross-breeding and the sheltering of animals in stalls at night, was studied to evaluate its effect on milk production by Ankole x Friesian crossbreds. The study was performed in Beni, D.R. Congo, on two groups of 15 animals (control group-CoG and improved group-IG), homogeneous according to Friesian blood and parity levels. The improved system, Friesian blood and parity levels increased significantly milk production (P<0.001). Farming system increased milk production by 1.6 l/d (5.2 l/d vs 6.8 l/d respectively in CoG and IG). Milk production ranged from 5.3±0.04 l/d to 6.6±0.02 l/d and from 4.9±0.02 l/d to 7.2±0.02 l/d according, respectively, to Friesian blood level and parity. A significant interaction was observed between farming system and Friesian blood level, and between farming system and parity (P<0.001). The two groups were characterized by a fair adaptation to forage availability associated to climatic factors. The study showed the importance of genetic and environmental factors on the milk production of crossbred dairy cows of the region. [less ▲]

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See detailNutritive value of Adenodolichos rhomboideus leaves compared with Leucaena leucocephala and Stylosanthes guianensis forages in indigenous goats in Lubumbashi (DR Congo).
Tshibangu, Muamba Innocent; Nsahlai, Ignatus Verla; Kiatoko, Mangeye Honoré et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (in press)

Forage from three species (Adenodolichos rhomboideus, Leucaena leucocephala, Stylosanthes guianensis) were evaluated by determining chemical composition, voluntary intake and apparent in vivo ... [more ▼]

Forage from three species (Adenodolichos rhomboideus, Leucaena leucocephala, Stylosanthes guianensis) were evaluated by determining chemical composition, voluntary intake and apparent in vivo digestibility of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fibre (NDF) and acid detergent fibre (ADF). Six goats (17.1±0.7 kg) were used in 3 x 3 double latin square design to determine the digestibility and intake of the three forages. Forage from S. guianensis had lower (p<0.001) CP content than L. leucocephala forage and A. rhomboideus leaves. Fibres content (ADF and NDF) were lower (p<0.001) in L. leucocephala (35%) forage than A. rhomboideus (59.5%) leaves and S. guianensis forages (56.5%). L. leucocephala forage was superior in CP, Ash, EE concentrations, digestibility and voluntary intake of CP. A. rhomboideus leaves had lower (p<0.05) apparent digestibility and intake of DM. Digestible CP intake were similar between A. rhomboideus leaves and S. guianensis forages. Low digestibility and voluntary intake of A. rhomboideus leaves may be due to negative effect of anti-nutritional factor such as tannin. Digestible CP was similar for A. rhomboideus leaves and S. guianensis forage. [less ▲]

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See detailIl y a d’autres voies pour obtenir des produits animaux
Bindelle, Jérôme ULg; Hornick, Jean-Luc ULg

in Ellies, Marie-Pierre (Ed.) Les filières animales françaises (2014)

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See detailEffect of bovine colostrum administration on plasma protein profile, growth, and survival in Red kid.
Abdou, Harouna ULg; Marichatou, Hamani; Beckers, Jean-François ULg et al

in Small Ruminant Research (2013), 117

This study evaluated the effect of colostrum from Azawak cows on plasma protein profile, 24 growth, and survival in Red kids from Niger. Forty (40) newborn kids were allocated to one 25 of two treatment ... [more ▼]

This study evaluated the effect of colostrum from Azawak cows on plasma protein profile, 24 growth, and survival in Red kids from Niger. Forty (40) newborn kids were allocated to one 25 of two treatment-groups: control (free access to water and the mother) and colostrum (free 26 access to water and the mother, but with additional 50 mL of colostrum/animal/day of birth 27 and 25 mL/animal/day from the 2nd to 15th day of age). Blood samples were collected into 28 EDTA vacutainer tubes by jugular puncture at 10 and 30 days of age. Total protein was 29 quantified by the Biuret method. The agarose gel electrophoresis was used to determine the 30 serum levels of albumin, -globulin, β1-globulin, β2-globulin, γ-globulin and the 31 albumin/globulin ratio. The animals from the colostrum group showed higher body weight 32 and average daily gain when compared to the control group (P < 0.001). The average 33 concentration in protein at the both sampling times reached higher values in the colostrum 34 than in the control group. At D10, the colostrum group tended (P < 0.07) to show higher 35 levels of -globulin and had higher values (P < 0.05) for β1-globulin. At D30, total protein 36 and β2-globulins were higher in colostrum group. Colostrum from Azawak cows seems to 37 have positive effects on some plasma proteins levels and on growth rate in Red kids. [less ▲]

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See detailEvaluation de la Teneur Sanguine en Sélénium dans le Sang des Vaches en Wallonie (Belgique)
Mehdi, Youcef ULg; Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg et al

in 20ième Rencontre Recherches Ruminants (2013, December 04)

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See detailAssessment of the selenium status in cattle herds in Wallonia
Mehdi, Youcef ULg; Dotreppe, Olivier ULg; Robaye, Vincent ULg et al

in 64th Annual Meeting of the European Federation of Animal Science (2013, August 26)

The selenium content is low in the soil of Wallonia, the southern part of Belgium. It is therefore logical that the selenium content in feedstuffs grown in these fields-grass, conserved forages, cereals ... [more ▼]

The selenium content is low in the soil of Wallonia, the southern part of Belgium. It is therefore logical that the selenium content in feedstuffs grown in these fields-grass, conserved forages, cereals and by-products- is also low. A survey was carried on 166 farms in Wallonia. The farms were located in 4 specific agronomy areas- Pays de Herve with mainly pastures (4farms)- Ardennes (a sub-mountainous area and pastures, 24 farms), Hesbays with mainly arable lands (55 farms) and Condroz with both pastures and arable (83 farms) There were herds with dairy cow, herds with beef cow and herds with both types of animals. The average age was 44±15 months for the cows and 18±6 months for the heifers. The blood samples were taken on five healthy animals of each herd, on the end of the winter just before the animals went to pastures. The selenium status was assessed by the activity of the Glutathion peroydase. The selenium status was extremely variable for the different farms of the 4 areas with variation coefficient of 56%. It was in Pays de Herve and in Hesbaye that the average selenium status was the highest at 53 and 56 µg Se/l. By contrast, it was in Ardenne and in Condroz that the status was the lowest, at 39 and 43 µg Se/l. The selenium status was, on the whole, higher in the dairy herds than in the beef herds owing to the higher selenium provision by the mineral mixtures and the compound feedstuffs added to the diet. Assuming that the normal selenium concentration in plasma being 70µg/l, it appeared also that 81% of the individual animals tested were below the normal Se concentration. It can thus be concluded from the present survey that the cattle herds in Wallonia are deficient in selenium. [less ▲]

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See detailEffect of breed, age and sex on selenium content of dromedary
Sahraoui, Naima; Boudjenah, Saliha; Dotreppe, Olivier ULg et al

in Sahraoui Journal of Camelid Science (2013), 6

The dromedary camel is able to produce meat and milk in arid conditions and its production is appreciated by the autochthon population. The aim of this study was to determine the selenium concentration in ... [more ▼]

The dromedary camel is able to produce meat and milk in arid conditions and its production is appreciated by the autochthon population. The aim of this study was to determine the selenium concentration in 61 Longissimus dorsi muscle samples representing three Algerian camel breeds (Tergui, Sahraoui or Naili breeds), the age of the selected camels ranged between 8 months and 13 years old. The muscle samples were collected from the slaughterhouse of Ouargla (South East Algeria) representing 41 males and 20 female. The average content of selenium was 0.216 mg.kg-1of wet tissue, which is higher than values currently reported in most ruminants. The level of Se was not influenced by age and sex. However, Tergui breed contained significantly higher selenium than other breeds, which may be due to diet composition intake. In conclusion, the meat from camels in Algeria is a good source of selenium, assessing its nutritional interest for human. [less ▲]

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See detailMuscle Characteristics, Meat Tenderness and Nutritional Qualities Traits of Borgou, Lagunaire and Zebu Fulani Bulls Raised on Natural Pasture in Benin
Salifou, C.F.A.; Dahouda, Mahamadou; Houaga, I et al

in International Journal of Animal and Veterinary Advances (2013), 5(4), 143-155

This study was carried out to evaluate muscle characteristics, meat ten derness and nutritional qualities of Benin indigenous cattle raised on natural pasture. Thus, 10 Zebu Fulani, 10 Borgou and 5 ... [more ▼]

This study was carried out to evaluate muscle characteristics, meat ten derness and nutritional qualities of Benin indigenous cattle raised on natural pasture. Thus, 10 Zebu Fulani, 10 Borgou and 5 Lagunaire were slaughtered at 5 years old and their Longissimus thoracis muscle samples were collected for analyses. Lactate dehydrogenase activity of Zebu Fulani was higher (p<0.05) than that of Lagunaire (3494 vs 2813 μmol/min/g protein) while that of Borgou was not significantly different from those of the two other breeds (p>0.05). As for isocitrate dehydrogenase, citrate synthase, cytochrome oxidase and phosphofructokinase, no significant difference was observed between the three breeds (p>0.05). By contrast, the total collagen content of Borgou (5.2 mg OH-proline/mg dry matter) was higher (p<0.01) than those of Zebu Fulani (3.1 mg OH-proline/mg dry matter) and Lagunaire (3.2 mg OH-proline/mg dry matter). The myosin heavy chain isoforms I, IIa and IIx were not different between the three breeds. The dry matter, the crude protein and the ether extract percentage were not significantly varied from one breed to another. Branched-chain Fatty Acids and saturated fatty acids contents were identical in Lagunaire and Borgou (p>0.05) while the Zebu Fulani had the highest values (p<0.05). The ratio n-6 to n-3 fatty acids obtained in the Zebu was the lower. In general, according to the fatty acids profile, Borgou and Lagunaire bulls’ meat is better than that of Zebu for heart disease [less ▲]

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See detailBurundi: principales réalisations du projet de coopération (2ème partie)
Chapaux; Knapp, Emilie ULg; Ngiyimbere, S et al

in Wallonie Elevages (2013)

Lors d’un précédent article, nous avons décrit 2 systèmes d’exploitation importants au Burundi. Celui d’une station d’élevage avec des animaux de races locales (Sahiwal, Ankolè) parfois croisées avec des ... [more ▼]

Lors d’un précédent article, nous avons décrit 2 systèmes d’exploitation importants au Burundi. Celui d’une station d’élevage avec des animaux de races locales (Sahiwal, Ankolè) parfois croisées avec des races laitières et celui des petites exploitations détenant principalement des animaux de race frisonne. Les animaux de la station sont en pâturage semi-extensif et subissent de fortes carences alimentaires en saison sèche. Les moyennes journalières de production laitière varient de 2,5 l à 5l pour les Sahiwal et sont proches de 15 l dans les petites exploitations. Les productions plus élevées dans ces dernières s’expliquent par une génétique (race frisonne) et des facteurs environnementaux (couverture des besoins alimentaires, pression parasitaire) plus propices. A la station, dans des conditions d’élevage bien plus difficiles, les animaux croisés avec des races laitières ont une production légèrement plus élevée en saison humide où les fourrages ne manquent pas, mais une production moins élevée que celle des races locales en saison sèche. Cette observation montre l’importance de conserver le potentiel génétique des animaux tropicaux, bien adaptés à leur environnement (meilleure valorisation des fourrages et meilleure résistance aux maladies endémiques). Dans cet article, nous allons présenter succinctement les principales réalisations du projet (suivi de la reproduction, de l’alimentation et suivi parasitaire), que nous avons entreprises en concertation avec les responsables de l’élevage et les éleveurs. Dans le prochain article, nous présenterons les premiers résultats de l’essai de croisement BBB avec des races locales. [less ▲]

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See detailELEVAGE DES POULETS TRADITIONNELS OU INDIGÈNES AU SÉNÉGAL ET EN AFRIQUE SUBSAHARIENNE : Etat des lieux et contraintes
Ayssiwede, Simplice Bosco; Dieng, Abdoulaye; Houinato, M.R.B. et al

in Annales de Médecine Vétérinaire (2013), 158

Cette synthèse aborde les multiples rôles (sociaux, culturels, économiques, religieux, alimentaires et agricoles) de l’aviculture villageoise dans la lutte contre la pauvreté et l’insécurité alimentaire ... [more ▼]

Cette synthèse aborde les multiples rôles (sociaux, culturels, économiques, religieux, alimentaires et agricoles) de l’aviculture villageoise dans la lutte contre la pauvreté et l’insécurité alimentaire des populations africaines. Elle décrit les caractéristiques des différents systèmes existants (extensif et amélioré) et les pratiques d’alimentation observées dans ce sous-secteur avicole. Après avoir passé en revue les variétés phénotypiques existantes dans la population de poules locales africaines et les performances zootechniques des sujets exploités au Sénégal et dans diverses régions d’Afrique subsaharienne, elle met un accent particulier sur les différentes contraintes (précarité des d’habitats, fortes mortalités, maladies aviaires, prédateurs, irrégularité et déficit d’approvisionnement alimentaire, accès au crédit…) qui freinent le développement de l’aviculture traditionnelle au Sénégal et en Afrique subsaharienne. [less ▲]

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See detailAmélioration des bilans d'excrétion d'azote dans deux exploitations laitières de la région wallonne par un suivi raisonné des rations
Knapp, Emilie ULg; Istasse, Louis ULg; Hornick, Jean-Luc ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2013), 17

Deux exploitations laitières situées l'une en Pays de Herve et l'autre en Ardenne ont fait l'objet de suivis réalisés en vue de déterminer les bilans d'excrétion azotée. Dans la première exploitation, les ... [more ▼]

Deux exploitations laitières situées l'une en Pays de Herve et l'autre en Ardenne ont fait l'objet de suivis réalisés en vue de déterminer les bilans d'excrétion azotée. Dans la première exploitation, les vaches étaient divisées en deux groupes, à savoir le groupes de hautes productrices (HP) et le groupe des basses productrices (BP), chaque groupe recevant une ration spécifique. Dans la seconde exploitation, les animaux constituaient un seul groupe. [less ▲]

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See detailSelenium in the environment, metabolism and involvement in the body functions
Mehdi, Youcef; Hornick, Jean-Luc ULg; Istasse, Louis ULg et al

in Molecules (2013), 13

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See detailInfluence de facteurs environnementaux influençant la teneur en urée dans le lait de vache en Wallonie et estimation des rejets azotés
Dufrasne, Isabelle ULg; Knapp, Emilie ULg; Istasse, Louis ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2013), 17

En Wallonie, les teneurs en urée du lait de tank sont déterminées dans toutes les fermes lors de chaque livraison à la laiterie par le Comité du lait. Un total de 8 295 337 données récoltées pendant ... [more ▼]

En Wallonie, les teneurs en urée du lait de tank sont déterminées dans toutes les fermes lors de chaque livraison à la laiterie par le Comité du lait. Un total de 8 295 337 données récoltées pendant l’année 2000 et la période 2002-2011 ont été analysées à l’aide d’un modèle linéaire. Les effets fixes de la région agricole ou de l’appartenance à la zone vulnérable, du mois, de l’année, des interactions entre ces paramètres ont été inclus dans le modèle. Les teneurs en matières grasse et protéique ont été utilisées comme covariables. La moyenne des teneurs en urée dans le lait a été de 255 mg.l-1. Les modèles ont permis d’expliquer 38 % et 35 % des variations des teneurs en urée pour la région agricole et pour la zone vulnérable respectivement. À l’intérieur de ces modèles, le mois, la région, l’année et l’interaction mois – année ont été les composantes les plus explicatives. Les teneurs en urée ont été plus élevées pendant la période d’avril à octobre et les plus faibles pendant la période de novembre à mars (287 vs 210 mg.l-1). Cette observation peut être expliquée par le changement de ration. Pendant la période estivale, l’herbe constitue une part variable dans la ration et peut apporter une quantité d’azote excédentaire par rapport aux besoins des animaux. Quatre pour cent des observations ont été supérieures à 350 mg.l-1 pendant la période de novembre à mars et 14 % à 400 mg.l-1 pendant la période d’avril à octobre. Dans les régions agricoles limoneuse et sablo-limoneuse, les teneurs en urée ont été plus faibles qu’en Haute Ardenne et en Ardenne (223 et 220 mg vs 278 et 284 mg.l-1 respectivement). Dans la zone vulnérable, les teneurs en urée ont été plus basses que dans la zone non vulnérable (236 vs 273 mg.l-1). Les rejets annuels azotés calculés à partir de différentes équations ont varié de 82 à 119 kg N par vache selon la région agricole. [less ▲]

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See detailInfluence de facteurs environnementaux influençant la teneur en urée dans le lait de vache en Wallonie et estimation des rejets azotés
Dufrasne, Isabelle ULg; Knapp, Emilie ULg; Istasse, Louis ULg et al

in Vandenberghe, Christophe; Colinet, Gilles; Destain, Jean-Pierre (Eds.) et al 2ème Atelier Nitrate-Eau, évaluation du programme de gestion durable de l'azote (2013)

En Wallonie, les teneurs en urée du lait de tank sont déterminées dans toutes les fermes lors de chaque livraison à la laiterie par le comité du lait. Un total de 8295337 données récoltées pendant l'année ... [more ▼]

En Wallonie, les teneurs en urée du lait de tank sont déterminées dans toutes les fermes lors de chaque livraison à la laiterie par le comité du lait. Un total de 8295337 données récoltées pendant l'année 2000 et la période 2002-201 ont été analysées à l'aide d'un modèle linéaire. [less ▲]

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See detailEffect of Azawak colostrum administration on plasma protein profile in red kid
Abdoul, H; Marichatou, H; Beckers, Jean-François ULg et al

in Proceedings of the 2nd Scientific Meeting of the Faculty of Veterinary Medicine (2012, October 19)

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See detailEffect of bovine Azawak colostrum administration on plasma protein profile in red kid.
Abdou, Harouna ULg; Marichatou, Hamani; Beckers, Jean-François ULg et al

Poster (2012, October 11)

This study evaluated the impact of heterologous Azawak colostrum administration on plasma protein profile in red kids from Niger. Forty (40) newborn kids were affected to one of two treatments: control ... [more ▼]

This study evaluated the impact of heterologous Azawak colostrum administration on plasma protein profile in red kids from Niger. Forty (40) newborn kids were affected to one of two treatments: control group (access to water and the mother) and colostrum group (access to the mother, water and additional 50 ml of colostrum Azawak/animal the day of birth, then 25ml/animal/day from the 2nd to 15th day). Blood samples (10ml/animal) were obtained at the age of 10 and 30 days by jugular puncture into EDTA vacutainer tubes. The quantification of total protein was performed by the Biuret method. The agarose gel electrophoresis was used to determine serum levels of albumin, ɑ-globulin, β1-globulin, β2-globulin, γ-globulin and finally the albumin/globulin ratio. In general, the average concentrations of these proteins obtained at both ages reached higher values in colostrum than in control group. At day 10, the colostrum group tended to show (P <0.07) higher levels for ɑ-globulin and showed higher values (P <0.04) for β1-globulin. At day 30, total protein and β2-globulins were higher in colostrum group. The administration of heterologous colostrum in kid seems to have positive effects on some plasma parameters. It would be worth to discriminate the plasma proteins derived from bovine and maternal colostra. [less ▲]

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