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See detailGrowth performance and meat quality of stress negative Piétrain pigs in the tropics: the case of Vietnam
Ha Xuan, Bo; Do Duc, Luc ULg; Moula, Nassim ULg et al

Poster (2013, October 11)

This study was carried out at the animal farm of Hanoi University of Agriculture, Vietnam to evaluate the growth performance and meat quality of stress negative Piétrain pigs. The study concerns the body ... [more ▼]

This study was carried out at the animal farm of Hanoi University of Agriculture, Vietnam to evaluate the growth performance and meat quality of stress negative Piétrain pigs. The study concerns the body weight (BW) of 116 pigs at 7.5 months of age and the ultrasound measurements on 83 live animals in order to determine backfat thickness, longissimus muscle depth and lean meat percentage (LM). Meat color (C.I.E L*, a* and b*), peak shear force (SF), pH at 24h (pH24) and at 45 minutes (pH45) post mortem were measured on 31 meat samples. Meat chemical composition (dry matter, protein, lipids and ash) was determined on 23 meat samples. All the data were analyzed according to a linear fixed model including gender effect (female and intact males) and Halothane genotype (CC and CT). The interaction between gender and genotype was not observed and therefore it was ignored from the final model. The results show that BW and LM were not significantly different between genotypes (P>0.21) while females were heavier than males (101.11 vs. 93.85 kg, P=0.0011). LM of female and male were respectively 63.27 and 63.56%. Gender and genotype didn’t affect meat quality and chemical composition (P>0.05) except pH24 (P=0.0011), a* (P<0.0001) and lipids (P=0.0012) for gender effect. The pH45 (6.50 and 6.45 for females and males) and pH24 (5.34 and 5.49 for females and males) were in the range corresponding to a normal meat. The obtained results show that stress negative Piétrain pigs have high lean meat percentage and satisfactory meat quality under tropical climatic conditions in Vietnam. [less ▲]

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See detailẢnh hưởng của kiểu gen halothane đến năng suất sinh sản của đàn lợn hạt nhân Piétrain kháng stress trong điều kiện chuồng kín và chuồng hở
Do Duc, Luc ULg; Ha Xuan, Bo; Vu Dinh, Ton et al

in Báo cáo khoa học Hội nghị Khoa học Công nghệ sinh học toàn quốc 2013 (2013)

The study was carried out on purebred nucleus herd of stress negative Piétrain pigs raised at Dong Hiep farm, Hai Phong province (HP) consisting of 18 males (13 CC and 5 CT) and 45 sows (31 CC and 14 CT ... [more ▼]

The study was carried out on purebred nucleus herd of stress negative Piétrain pigs raised at Dong Hiep farm, Hai Phong province (HP) consisting of 18 males (13 CC and 5 CT) and 45 sows (31 CC and 14 CT) and at Animal farm of Hanoi University of Agriculture (HN), including 9 males (3 CC and 6 CT) and 21 sows (11 CC and 10 CT) from May 2010 in April 2013 to evaluate the effect of halothane genotype of boars (CC and CT) and halothane genotype of sows (CC and CT) on reproductive performance. The results showed that reproductive performance was not significantly different between boars CC and CT (P>0 .05). Body weight of piglets born from sows CT (1.54 kg) was higher than those from CC (1.42 kg) at birth, however at weaning this trend was opposite (6.46 kg vs. 6.00 kg). Reproduction performances of CC and CT boars were similar under opening and closing farm conditions. However, using of CC sows can improve the body weight of piglets at the weaning; in particularly, CC sows in the closing farm condition. [less ▲]

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See detailNăng suất sinh trưởng, thân thịt và chất lượng thịt của các tổ hợp lai giữa lợn nái F1(landrace x Yorkshire) với đực giống (Piétrain x Duroc) có thành phần Piétrain kháng stress khác nhau
Pham Thi, Dao; Nguyen Van, Thang; Vu Dinh, Ton et al

in Journal of Science and Development (2013), 11(2), 200-208

The study was carried out at 3 pig farms in Hai Duong and Hung Yen from March 2011 to January 2013 to evaluate growth rate and carcass quality of F1(Landrace x Yorkshire) (F1(L x Y)) sows mated with F1 ... [more ▼]

The study was carried out at 3 pig farms in Hai Duong and Hung Yen from March 2011 to January 2013 to evaluate growth rate and carcass quality of F1(Landrace x Yorkshire) (F1(L x Y)) sows mated with F1(Piétrain x Duroc) (PiDu) boars with Pietrain ReHal genetic constitution (25, 50 and 50%: PiDu25, PiDu50, PiDu75). The results showed that these crossbreds obtained high growth rates and low feed conversion ratio (FCR) (829.42 g/day and 2.31 kg/kg; 797.78 g/day and 2.33 kg/kg; 765.79 g/day and 2.38 kg feed/kg weight gain, respectively). Lean meat percentage of PiDu25 x F1(L x Y), PiDu50 x F1(L x Y) và PiDu75 x F1(L x Y) were 54.66, 56.32 and 59.97%, respectively. Lean meat percentage of PiDu75 x F1(L x Y) was higher than that of PiDu25 x F1(L x Y) and PiDu50 x F1(L x Y). The meat quality traits in terms of pH, colour drip loss, and firmness of 3 crossbreds were normal. Crude protein of musculus longissimus dorsi of crossbreds was 21.53, 22.18 and 22.63%. The research suggests that using crossbed boars PiDu25, PiDu50, PiDu75 to mate with F1(L x Y) sows helps to obtain high performance in pig farms [less ▲]

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See detailGrowth performance and sperm quality of stress negative Piétrain boars and their hybrids with Duroc
Do Duc, Luc ULg; Ha Xuan, Bo; Farnir, Frédéric ULg et al

in Journal of Science and Development (2013), 11(2),

This study was conducted to evaluate the effects of genetic background and season on growth performance and semen quality of boars. Five genetic groups were evaluated, including stress-negative Piétrain ... [more ▼]

This study was conducted to evaluate the effects of genetic background and season on growth performance and semen quality of boars. Five genetic groups were evaluated, including stress-negative Piétrain boars with CC (PiCC) or CT (PiCT) halothane genotypes, and Piétrain x Duroc hybrid boars with various compositions (25% (PiDu25), 50% (PiDu50) or 75% (PiDu75) of Piétrain origin). The results showed that genetic group has a significant effect on growth performance and semen quality. The hybrid boars PiDu25, PiDu50 and PiDu75 had better growth rate, but lower lean <br />meat in comparison with pure stress-negative Piétrain, except PiDu75 boars. PiDu25, PiDu50 and PiCC boars demonstrated high semen quality. A season effect was observed on most of semen quality traits of pure stress-negative Piétrain as well as hybrid boars with different genetic constitution. Sperm concentration was lower in Summer and Autumn, higher in Winter and Spring. The Piétrain x Duroc hybrid boars, especially PiDu75 seem to be promising as terminal boars. [less ▲]

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See detailKhả năng sinh trưởng và phẩm chất tinh dịch lợn đực Piétrain kháng stress nuôi tại Trung tâm giống lợn chất lượng cao - Trường Đại học Nông nghiệp Hà Nội
Ha Xuan, Bo; Do Duc, Luc ULg; Bui Van, Dinh et al

in Journal of Science and Development (2013), 11(2), 194-199

This study was carried out on 10 stress-negative Piétrain boars including 3 pigs of halothane genotype CC and 7 of CT at the pig breeding farm of Hanoi University of Agriculture in order to evaluate ... [more ▼]

This study was carried out on 10 stress-negative Piétrain boars including 3 pigs of halothane genotype CC and 7 of CT at the pig breeding farm of Hanoi University of Agriculture in order to evaluate effects of season (Spring, Summer and Autumn) and halothane genotype (CC and CT) on the production performance and semen traits. The results showed that the difference in daily average gain was not significant between CC (559.57 g/day) and CT boars (546.31 g/day). The halothane genotype did not affect semen traits (P>0.05) except ejaculation volume (P<0.001). Ejaculation volume of CC genotype (270.95ml) was higher than that of CT (220.82ml). Season had significant effect on ejaculation volume, sperm concentration and pH of semen (P<0.001) as well as total number of sperms moving straight ahead per each ejaculation (P<0.05). Semen volume was highest in autumn (293.02 ml) followed by summer (195.00 ml) and spring (190.86 ml) while this tendency was inverse for sperm concentration. Total number of sperms moving straight ahead per each ejaculation was highest in Autumn (47.15 billion) followed by Spring (45.20 billion) and lowest in Summer (36.74 billion). Semen traits of the stress-negative Piétrain boars were in accordance to the standards of technical criteria for animal breeding accoprding to the DecisionNo. 1712/QĐ-BNN-CN (Ministry of Agriculture and Rural development, Vietnam), except sperm motility and growth performance were lower than specified. [less ▲]

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See detailFirst Survey on the Use of Antibiotics in Pig and Poultry Production in the Red River Delta Region of Vietnam
Pham Kim, Dang; Saegerman, Claude ULg; Douny, Caroline ULg et al

in Food and Public Health (2013), 3(5), 247-256

In Vietnam where epidemics occur regularly in animal production, the farmers consider antibiotics as one of the solutions to fight against livestock diseases, thus the risk of abuse, even illegal use of ... [more ▼]

In Vietnam where epidemics occur regularly in animal production, the farmers consider antibiotics as one of the solutions to fight against livestock diseases, thus the risk of abuse, even illegal use of antibiotics in livestock is very high. However, this is a recent issue and has not yet been thoroughly investigated. A cross-sectional study on the use of antibiotics in pig and poultry production as well as the farmer’s knowledge on the danger of the antibiotic use in three different animal production systems (farm household, semi-industrial and industrial) was conducted from July 2009 to March 2010 on 270 entities, in 3 representative localities of the Red River Delta (RRD). The results showed that a large volume of antibiotics was used arbitrary in all animal production systems. Animals were not only treated for acute diseases, but also for disease prevention, and for growth promotion. At least 45 antibiotics of more than 10 classes were used. Fifteen antibiotics were used in pig and poultry feed. For diseases treatment and prevention, antibiotics were used abusively and even illegally (e.g. chloramphenicol) by both farmers and veterinarians. The findings of this survey will permit developing new strategies for prudent use of antibiotics in livestock in Vietnam. These results will help not only to strengthen issues such as veterinary networks; antibiotics use guidance, residues monitoring systems and food safety, but also to improve awareness and ethics of producers and veterinary drug sellers. [less ▲]

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See detailUtilization of Large White x Mong Cai crossbred sows, Duroc and stress negative Piétrain boars for the production of fattening pigs under household conditions in northern Vietnam
Do Duc, Luc ULg; Clinquart, Antoine ULg; Vu Dinh, Ton et al

in Animal Production Science (2013)

The objective of the present study was to compare Duroc (DU) and stress-negative Piétrain (PI) as terminal sires mated to F1(Large White x Mong Cai) sows (F1) on productivity, carcass characteristics ... [more ▼]

The objective of the present study was to compare Duroc (DU) and stress-negative Piétrain (PI) as terminal sires mated to F1(Large White x Mong Cai) sows (F1) on productivity, carcass characteristics, meat quality and meat chemical composition under household conditions in Hai Duong province, Vietnam. The reproduction performances were based on 74 litters of 42 F1 sows from 12 households and the semen from 11 Duroc and 10 Piétrain boars. Data on production and carcass traits were collected from 76 DUxF1and 67 PIxF1 crossbred fattening pigs. Longissimus dorsi samples from 55 and 37 of DUxF1 and PIxF1 respectively were analyzed to determine meat quality and meat chemical composition. The results show that household affected production, carcass, and meat quality traits (P<0.05) as well as reproduction (weights at birth and weaning, P<0.01). Inversely, boar breeds did not influence (P>0.06) on reproduction traits (except individual weight of born alive pigs and weaned pigs, P<0.01), production traits, meat chemical composition and meat quality (except pH at 4 days post mortem, P<0.05) while lean meat percentage of Piétrain-sired pigs was higher than those of Duroc-sired pigs (P<0.05). The utilization of Piétrain boars does not affect reproduction performances, growth rate and meat quality while improving lean meat percentage in comparison to Duroc boars. This suggests that the use of stress-negative Piétrain boars as terminal sires would improve lean meat percentage under household conditions in North Vietnam. [less ▲]

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See detailReproductive and productive performances of the stress-negative Piétrain pigs in the tropics: the case of Vietnam
Do Duc, Luc ULg; Ha Xuan, Bo; Thomson, Peter et al

in Animal Production Science (2013), 53(2), 173-179

The objective of the present study is to investigate the reproduction, production and semen traits of the stressnegative Piétrain line of pigs in the north of Vietnam, as well as to identify various ... [more ▼]

The objective of the present study is to investigate the reproduction, production and semen traits of the stressnegative Piétrain line of pigs in the north of Vietnam, as well as to identify various factors (halothane genotype, generationorigin, parity, sex and month of the year) acting on these traits. The experiment was carried out on a purebred nucleus on Dong Hiep farm, Haiphong province in Vietnam. The reproduction performances and the sperm quality measures were based on 12 sows and 5 boars imported from Belgium as well as on 29 sows and 14 boars born in Vietnam, while the production performances were recorded only from 251 animals born in Vietnam. No significant differences were observed between halothane genotypes of sows for reproduction traits (P>0.0578). At the age of 7.5 months, bodyweight, backfat thickness and longissimus depth (7.5) of homozygous-dominant pigs were higher (P<0.05) than in heterozygotes. Homozygous-dominant boars had higher total number of spermatozoa than heterozygote boars (P < 0.05); similarly, Vietnam boars also presented higher total number of spermatozoa values than Belgium boars (P < 0.001). Vietnam sows had longer duration of pregnancy, more piglets born alive and heavier litter weight of weaning than Belgium sows (P < 0.01). Bodyweight at birth, at weaning, at 2, 5.5 and 7.5 months of age increased from the first to third parity (P < 0.05). Gilts had more lean meat than intact boars (P < 0.01). Compared with observations made in temperate countries, the reproduction and production performances, sperm concentration and total number of spermatozoa of stress-negative Piétrain pigs were reduced, whereas lean meat percentage was not affected. This might be due to the different climate, although improving values for animals born in Vietnam might indicate adaptation of the animals and/or of the technicians with that breed. The results support the interest of the use of this new Piétrain line in tropical countries with ecological and climatic conditions similar to Vietnam. [less ▲]

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See detailGenetic parameters for individual weights at birth, weaning and 60 days of stress negative Piétrain pigs in the tropics: the case of Vietnam
Do Duc, Luc ULg; Michaux, Charles ULg; Dang Vu, Binh et al

Poster (2012, November 28)

Data recorded between 2008 and 2012 from Dong Hiep pig farm, Vietnam, was used to stimate genetic parameters for weights at birth (WB), weaning (WW) and 60 days (W60) of stress negative Piétrain pigs ... [more ▼]

Data recorded between 2008 and 2012 from Dong Hiep pig farm, Vietnam, was used to stimate genetic parameters for weights at birth (WB), weaning (WW) and 60 days (W60) of stress negative Piétrain pigs using restricted maximum likelihood methodology. WB, WW and W60 were recorded from 1146, 839 and 610 animals respectively. The data were analyzed according to a mixed model including 4 fixed effects, parity, season, sex, and interaction between halothane genotype and country of origin (Belgium and Vietnam) of sows. Additionally, 3 random effects (maternal common environment for litter, direct and maternal additive genetic) for WB and 2 random effects (maternal common environment for litter and direct additive genetic) for WW and W60 were included in the model. Estimates of direct heritability and proportion of the maternal common environmental variance for WB, WW and W60 were 0.20, 0.13; 0.22, 0.21 and 0.19, 0.30 respectively. In addition, the estimate of maternal heritability for WB was 0.14. These genetic parameters suggest that WB, WW and W60 could be improved by selection using both direct and maternal effects. [less ▲]

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See detailEGG QUALITY COMPARISON OF TWO VIETNAMESE CHICKEN BREEDS (RI AND MIA)
Moula, Nassim ULg; Antoine-Moussiaux, Nicolas ULg; Do Duc, Luc ULg et al

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

In the context of the valorization of poultry biodiversity, this work represents a step toward a better knowledge of the production abilities of local chicken breeds in Vietnam. Local chicken breeds are ... [more ▼]

In the context of the valorization of poultry biodiversity, this work represents a step toward a better knowledge of the production abilities of local chicken breeds in Vietnam. Local chicken breeds are indeed particularly well suited for low-input rearing systems, as widely practiced in rural households of Vietnam. The socio-economic importance of these breeds might be underpinned by a market valorization through the mounting of differentiated quality value chains. Such a strategy needs the production potential of these local breeds to be assessed using parameters of egg quality and quantity. This study presents data about egg quality traits in two chicken breeds, the Ri and the Mia. The former is the most widespread breed in Vietnam, while the latter is known to be in danger of extinction. Nineteen parameters of quality of ninety eggs of Ri chickens and sixty eggs of Mia chickens were measured, each for both 40 and 60-weeks old hens to take hens ages into account.Mean egg weight of Mia eggs (44.70g) was significantly (p<0.001) higher than that of Ri eggs (41.68g). The yolk to albumen ratio was not significantly different (p>0.05) between the two breeds at the age of 40 weeks (Ri: 0.55; Mia: 0.58). For 60-weeks old hens, the ratio became significantly (p<0.05) higher in Mia eggs compared to Ri eggs (0.64 vs. 0.57). No significant difference (p>0.05) was recorded between the two breeds for parameters used for egg freshness assessment (Haugh’s units and pH of albumen and yolk) or eggshell resistance (maximal breakage force). Despite the small sample available for the study (due to the low availability of Mia hens and eggs), significant differences in egg quality traits were thus observed between these two breeds. [less ▲]

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See detailMORPHO-BIOMETRIC CHARACTERIZATION OF TWO LOCAL CHICKEN BREEDS IN VIETNAM
Do Duc, Luc ULg; Moula, Nassim ULg; Antoine-Moussiaux, Nicolas ULg et al

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

In Vietnam, 84% of the 188 million chickens are indigenous. The following local breeds are recorded: Ri, Mia, Te, Tau Vang, Ac, Oke, H’mong, Tre, Choi, Phu Lu Te, To, Dan Khao, Ho, Dong Tao and Van Phu ... [more ▼]

In Vietnam, 84% of the 188 million chickens are indigenous. The following local breeds are recorded: Ri, Mia, Te, Tau Vang, Ac, Oke, H’mong, Tre, Choi, Phu Lu Te, To, Dan Khao, Ho, Dong Tao and Van Phu. Mia, Ho and Dong Tao are reported as endangered or critical, while the Van Phu breed could have been lost during the last years. The phenotypes of the Mia and Ri breeds are described as quite close. The objective of this study is to characterize phenotypically Ri and Mia chickens. The morpho-biometric characterization was conducted according to the recommendation of FAO (1981). A total of 227 adults Ri (174 females and 53 males) and 53 adults Mia (18 males and 35 females) were used for the study. The following colors were observed for Ri and Mia respectively: tan (43.17% and 37.73%), gold salmon (24.23% and 26.42%), wheat (15.42% and 26.42%), dark red (9.69% and 5.66%), silver salmon (3.52% and 3.77%) and copper black (3.96% and 0%). Comb was mostly simple (91.19% and 100%) and red (100% and 100%) for both breeds. The wattles were of the same color as the comb while the color of the legs was yellow. The weights of adult males (2433.89g) and females (1752.86g) of the Mia breed were significantly higher than those of Ri (2053.02g and 1459.22g for males and females respectively). The results show that the external aspect of both breeds is not very different while body weights in the Ri breed were found lower than in the Mia breed. [less ▲]

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See detailAmélioration des performances génétiques des races tropicales par les races wallonnes.
Leroy, Pascal ULg; Moula, Nassim ULg; Huart, Alain et al

Conference (2012, August 25)

As part of the genetic improvement of production, selection of breeds (purebred selection) on the one hand and crossbreeding, exploiting the complementarity between breeds and hybrid vigor or heterosis ... [more ▼]

As part of the genetic improvement of production, selection of breeds (purebred selection) on the one hand and crossbreeding, exploiting the complementarity between breeds and hybrid vigor or heterosis other hand, are methods choice used by animal husbandry. The pure breeding as practiced in the developed world, based on the individual performance of breeding as well as the placement of the offspring, uses expensive infrastructure and significant human resources. In addition, genetic progress is slow and must be sustained effort. For all these reasons, in the less favored regions of the world, although the intra-breed selection is operational, most stakeholders are most often uses the crossbreeding technique leading to immediate results and protecting local breeds. Thus, in dairy cattle, many countries have used the Holstein, Brown in the Alps, and the Montbéliarde Normande with varying success. In the meat sector, in cattle, swine and sheep, as well as in the area of ​​poultry meat, crossing indigenous breeds with exotic breeds imported leads to interesting results. In the Walloon Region, due to the hard work of breeders, animals have emerged exceptional and, in cattle, swine and sheep, they are in fact, more muscular animals in the world. Thus, bulls Belgian Blue reared under natural conditions, have average daily gains as high as 2000 g / d with yields close to slaughter 70% Pietrain pigs reach values ​​of the performance slaughter of around 83% and the yield values ​​as high as 59% were observed in Texel sheep. All these animals have the characteristic of being very efficient while presenting carcasses with more muscle, less fat and less bone. As for local poultry type Ardennaise, it has remarkable phenotypes leading to immediate traceability (black members), more than 150 eggs per clutch and a darker meat.The author gives in detail examples of the use of crossbreeding with cattle, sheep, pig and poultry all originated from the Walloon Region of Belgium. [less ▲]

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See detailComparaison de la qualité des œufs de deux races de poules Vietnamiennes (Ri et Mia)
Moula, Nassim ULg; Antoine-Moussiaux, Nicolas ULg; Do Duc, Luc ULg et al

Poster (2012, May 27)

Dans le contexte de valorisation de la biodiversité avicole, ce travail se propose de poser les bases d’une réhabilitation des poules locales Vietnamiennes, particulièrement adaptées aux conditions ... [more ▼]

Dans le contexte de valorisation de la biodiversité avicole, ce travail se propose de poser les bases d’une réhabilitation des poules locales Vietnamiennes, particulièrement adaptées aux conditions d’élevage peu intensives de ce pays. La grande importance socioéconomique et culturelle de ces races pourrait être renforcée et exploitée à des fins de développement rural par la promotion de filières de qualités différenciées. De telles évolutions nécessitent de caractériser le potentiel de production de ces races sur le plan qualitatif. Cette étude a pour objectif l’étude de la qualité des œufs des races de poules vietnamiennes Ri et Mia. La première est la poule la plus répandue au Vietnam et la deuxième est une race menacée d’extinction. Dix neuf caractères de qualité externe et interne de 90 œufs de la poule Ri et 60 œufs de la poule Mia ont été mesurés à 40 et à 60 semaines. Le poids entier moyen des œufs de la Mia (44,70g) était significativement (p<0,001) supérieur à celui de la poule Ri (41,68g). Le rapport jaune/blanc n’était pas significativement (p>0,05) différent à l’âge de 40 semaines (Ri : 0,55 ; Mia : 0,58). À l’âge de 60 semaines, ce rapport devient significativement supérieur pour les œufs Mia alors que celui des œufs Ri (0,64 vs. 0,57 ; p<0,05). Aucune différence significative (p>0,05) n’a été enregistrée entre les deux races pour les paramètres de fraîcheur des œufs (unités d’Haugh et pH des blancs et des jaunes) et de résistance des coquilles (force maximale de rupture). Malgré le faible effectif de cette étude, des différences significatives entre les performances de production ont été observées entre ces deux races phénotypiquement et génotypiquement proches. [less ▲]

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See detailStress negative Piétrain boars and their hybrids - Growth performances and semen quality
Do Duc, Luc ULg; Ha Xuan, Bo; Farnir, Frédéric ULg et al

Poster (2011, July)

A total of 15 boars from 3 genetic groups were used for this study, including 5 Piétrain boars (purebred Piétrain), 5 ♀Duroc × ♂Piétrain (½ Piétrain) and 5 ♀(Piétrain × Duroc) × ♂Duroc (¼ Piétrain) in ... [more ▼]

A total of 15 boars from 3 genetic groups were used for this study, including 5 Piétrain boars (purebred Piétrain), 5 ♀Duroc × ♂Piétrain (½ Piétrain) and 5 ♀(Piétrain × Duroc) × ♂Duroc (¼ Piétrain) in order to evaluate the growth performance and sperm quality of stress negative Piétrain boars and their hybrids. Testing period started at an average age of 60 days and ended at an average age of 225 days. The growth performances were weights at starting and finishing periods, average daily gain, backfat thickness, longissimus depth and lean content. The sperm quality was assessed using ejaculate volume, spermatozoon motility, sperm concentration, total number of spermatozoon in the ejaculate, rate of abnormal spermatozoon and pH of sperm. All these measurements were used to compare the genetic groups. The results showed that: The average daily gain of stress negative Piétrain boar purebred was not significantly different from Piétrain hybrids while the lean content was higher. The ejaculate volume and the spermatozoon motility of stress negative Piétrain purebred boars were higher than Piétrain hybrids but the sperm concentration and the total number of spermatozoon in the ejaculate were lower. [less ▲]

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See detailThe Ri chicken breed and livelihoods in North Vietnam: characterisation and prospects
Moula, Nassim ULg; Do Duc, Luc ULg; Pham Kim, Dang et al

in Journal of Agriculture and Rural Development in the Tropics and Subtropics (2011), 112(1), 57-69

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See detailBổ sung giun quế (Perionyx excavatus) cho gà thịt (Hồ x Lương Phượng) từ 4 - 10 tuần tuổi
Vu, Dinh Ton; Han Quang, Hanh ULg; Nguyen, Dinh Linh et al

in Journal of Science and Development (2009), 7(2), 186-191

The present study was aimed to assess the effect of different levels of red worm (Perionyx excavatus) supplemented to the diet on growth performance and meat quality of broilers. An experiment was ... [more ▼]

The present study was aimed to assess the effect of different levels of red worm (Perionyx excavatus) supplemented to the diet on growth performance and meat quality of broilers. An experiment was conducted on broilers (Ho x Luong Phuong) of 4 - 10 weeks old according to a completely randomized design with one unsupplemented group (control) and three supplemented groups corresponding to 3 worm levels in the diet, viz. 1%, 1.5%, and 2% on a dry matter basis. Results showed that the 2% worm supplemented group had the highest growth rate, higher than the control group (1925.3 kg/head vs 1822.6 kg/head at the age of 10 weeks) with P <0.05. Chicken in the supplemented groups had lower FCR. The dressing percentage, and leg meat in the 2% worm supplemented group were higher than those of the control group. The different levels of red worm supplementation did not significantly affect meat quality (pH, color, the rate of dehydration after storage and processing). [less ▲]

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See detailKết quả bước đầu đánh giá khả năng sinh trưởng của lợn Pietrain kháng stress nuôi tại Hải Phòng (Việt Nam)
Do Duc, Luc ULg; Bui Van, Dinh; Nguyen Hoang, Thinh et al

in Journal of Agricultural Science and Developement - Hanoi University of Agriculture, Vietnam (2008), 6(6), 549-555

The present study was carried out on 19 stress negative Piétrain pigs (Pietrain ReHal), consisting of 13 gilts and 6 young boars imported from Belgium, raised in the livestock farm of Dong Hiep (Hai Phong ... [more ▼]

The present study was carried out on 19 stress negative Piétrain pigs (Pietrain ReHal), consisting of 13 gilts and 6 young boars imported from Belgium, raised in the livestock farm of Dong Hiep (Hai Phong) in order to evaluate growth performances and their adaptability in the North of Vietnam. Results showed that the average body weight of the whole herd at 2, 4, 5.5, and 8.5 months old was 19.05, 51.05, 85.82, and 119.47 kg, respectively. During the growing periods, except the first stage, the male grew faster than the female and the pigs of the CT genotype grew faster than those of CC genotype although the difference was not significant (P>0.05). The average daily gain (ADG) was 528.56 grams for the whole herd. The ADG was higher for the male (546.48 grams) than for the female (520.29 grams), and its was higher for the CT than the CC, but the difference was not statistically significant (P>0.05). The feed conversion ratio (FCR) was 2.69 kg. The estimated lean percentage at 8.5 months old was 64.08%. The results indicate that Piétrain stress negative pigs could develop well on the farm conditions in Hai Phong, Vietnam. [less ▲]

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See detailDéveloppement rural et coopération interuniversitaire
Dang Vu, Binh; Vu Dinh, Ton; Lebailly, Philippe ULg et al

Conference (2008)

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