Reproductive and productive performances of the stress-negative Piétrain pigs in the tropics: the case of Vietnam

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 ▲]

Comparative evaluation of local poultry breed status in Algeria, Vietnam and the Democratic Republic of Congo

Poster (2012, September 11)

Comparative evaluation of local poultry breeds status in Algeria, Vietnam and the Democratic Republic of Congo

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 ▲]

MORPHO-BIOMETRIC CHARACTERIZATION OF TWO LOCAL CHICKEN BREEDS IN VIETNAM

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 ▲]

Comparaison de la qualité des œufs de deux races de poules Vietnamiennes (Ri et Mia)

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 ▲]

Effects of genotype and nutrition on growth performance,carcass characteristics, and meat properties of goats in Laos

in Journal of Southern Agriculture (2011), 42(7), 786-790

【Objective】A 2×2 factorial trial was carried out to determine effects of genotype and nutrition on improved growth performance, carcass characteristics, and meat properties of goats in Laos. 【Method】The ... [more ▼]

【Objective】A 2×2 factorial trial was carried out to determine effects of genotype and nutrition on improved growth performance, carcass characteristics, and meat properties of goats in Laos. 【Method】The indigenous goat breed (Lat) was used as the control in comparison with F1 (BT×L) as a result of crossbreeding Lat does with Bach Thao bucks imported from Vietnam. For each genotype, 30 growing male goats at age of 7 months were chosen and equally divided into 2 groups, one was raised according to the traditional feeding regime (free ranging only) and the other with an improved feeding regime including cassava hay and mineral block provided ad libitum in addition to free ranging. The animals were observed for the average daily gain (ADG) and at the end, three animals per group were slaughtered to determine carcass characteristics (physical composition, primal cuts), and meat properties (shear force, color, pH, drip loss, and cooking loss). 【Result】The results showed that the ADG of F1(60.02 g/head/day) was very much higher (56.09%) than that of the indigenous goat (38.45 g/head/day). The ADG of goats supplemented with cassava hay and mineral block (55.45g/head/day)was also significantly higher (28.89%) than that of those not supplemented (43.02 g/head/day). No significant (P >0.05)effects of the crossbreeding and supplementation were found for dressing percentage and percentages of shoulder-foreleg, rump-rearleg, and breast-rip cuts in the carcass; however, the F1 had a bigger neck (P<0.01) but a smaller loin-abdomen cut (P<0.01) compared with the indigenous goat. No significant differences were observed for the parameters of meat characteristics between Lat and F1 goats under the two different feeding regimes. 【Conclusion】It was therefore concluded that crossbreeding with Bach Thao bucks and supplementation of cassava hay and mineral block improved meat yield without negative effects on meat quality of goats in Laos. [less ▲]

Kết quả bước đầu đánh giá khả năng sinh trưởng của lợn Pietrain kháng stress nuôi tại Hải Phòng (Việt Nam)

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 ▲]