References of "Nguyen Van, Duy"
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See detailInbreeding and genomic runs of homozygosity in Vietnamese local chickens
Moyse, Evelyne ULiege; Nguyen Van, Duy; Vu Dinh, Ton et al

Poster (2016, October 21)

Most researches on genetic variety evaluation in Vietnamese local chicken breeds have been based up to now on microsatellite markers (Cuc et al., 2011; Pham et al., 2013). Thanks to the genotyping of ~580 ... [more ▼]

Most researches on genetic variety evaluation in Vietnamese local chicken breeds have been based up to now on microsatellite markers (Cuc et al., 2011; Pham et al., 2013). Thanks to the genotyping of ~580,000 SNPs on 95 chickens, this study aimed to assess the genetic diversity in four Vietnamese local breeds (Mia, Mong, Ho and Dong Tao). Inbreeding was examined through the detection of runs of homozygosity (ROH; Curik et al., 2014). The ROHs are long stretches of homozygous genome that are likely to reflect autozygosity. Given that Ho chickens have a small effective population size, more inbreeding and consequently longer ROHs are expected. Conversely, Mia chickens, with a larger effective population size should show less consanguinity and shorter ROHs. As expected, Mia chickens led to less observed homozygosity and less ROHs than the three other breeds. Moreover, when ROHs were subdivided in different lengths, the proportion of individuals having at least one R OH longer than 5Mb was significantly higher in Ho (63%) than in Mia chickens (33%). Given that very long ROHs are particularly associated with recent inbreeding, it seems that many Ho chickens have consanguineous parents. However, no significant difference was observed between the four breed concerning the total length of long ROHs (> 5Mb). In conclusion, the analysis of ROHs reported less consanguinity in Mia than in Ho chickens. In each breed, some individuals are found more consanguineous than expected. This study also confirms that ROHs are a useful tool in inbreeding research. [less ▲]

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See detailHo chicken breed : morpho-biometric characteristics and economic efficiency of production
Nguyen Van, Duy; Dao Thi, Hiep; Bui Huu, Doan et al

in Journal of Animal Husbandry Science and Technics (2015), (8), 73-79

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See detailHiện trạng sử dụng và giá trị dinh dưỡng một số loại thức ăn xanh dùng nuôi lợn trong nông hộ ở miền Bắc Việt Nam
Tran, Hiep; Nguyen Van, Duy; Nguyen Cong, Oanh ULiege et al

in Journal of Animal Husbandry Science and Technics (JAHST) (2013), (8),

The study was conducted (2010 to 2011) to assess the current use and nutritive value of green forages commonly used for pig in Northern Vietnam. The current use of forages was surveyed in Hai Duong, Phu ... [more ▼]

The study was conducted (2010 to 2011) to assess the current use and nutritive value of green forages commonly used for pig in Northern Vietnam. The current use of forages was surveyed in Hai Duong, Phu Tho and Hoa Binh. Nutritive values were classified at laboratory of Animal Nutrition Department (University of Liège - Gembloux, Belgium). Results showed the most common forages were sweet potatoes (98.89%), taro (58.89%) and banana (64.45%). They were mostly used as fiber supplement; some were used for diarrhea and anti-constipation treatment or for increasing milk production. Nutritional value varied from 2.76% to 25.30% (CP); 10.17% to 44.27% (NDF); 3232.92 to 4225.75 Kcal (GE); and 3.69% to 20.00% (ash). In vitro digestibility ranged from 36.71% to 85.44% for DM; 45.18% to 92.55% for CP; and 38.71% to 73.43% for GE. In vitro digestibility of banana fruit was higher than banana stem and flower. In vitro digestibility of DM, CP and GE of green banana fruit were 44.04%, 70.36% and 44.90%, lower than semi-ripe(81.43%, 75.65% and 55.52%), and ripe banana (85.44%, 78.60% and 54.04%), respectively. With high protein content, banana flower, broussonetia papyrifera leaf, taros and cabbage can be used as a good feed of swine. [less ▲]

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See detailUse of redworms (Perionyx excavatus) to manage agricultural wastes and supply valuable feed for poultry
Vu, Dinh Ton; Han Quang, Hanh ULiege; Nguyen, Dinh Linh et al

in Livestock Research for Rural Development (2009), 21(number 11), 192

Perionyx excavatus, cultured in Vietnam in early 1990s, showed an important role in managing organic wastes and supplying a very nutritious feed for animals. To develop vermiculture in practice, four ... [more ▼]

Perionyx excavatus, cultured in Vietnam in early 1990s, showed an important role in managing organic wastes and supplying a very nutritious feed for animals. To develop vermiculture in practice, four treatments of different substrates including 100% fresh cattle manure (CM); cattle manure + pig manure in 50:50 ratio (CPM); cattle manure + pig manure + rice straw in 50:40:10 ratio (CPMRS) and pig manure + rice straw in 90:10 ratio (PMRS) were prepared to examine worms’ growth and their decomposition efficiency. All substrates were composted 45 days before feeding to worms. The result showed that cattle manure (CM) was the best substrate for worm growth (biomass gained 713 g after 45 days or 242.6% of growth rate). The worm biomass achieved in CPMRS and PMRS treatments was significantly lower than that in CM treatment. As compared to primary substrates, vermicomposts exhibited an excellent result with a great increase in the amount of total P (0.3 – 0.6%), total K (0.09 – 0.23%), Ca (0.51 – 0.79%) and a decrease in N-NH3 and N-NH4+. A study was carried out to evaluate the influence of feed supplemented with worms on the growth and meat quality of broiler chickens (n=148). Starting at 4 weeks old the chickens were divided into a control group and three experimental groups corresponding to worm levels in the diet of 1, 1.5 and 2% on a dry matter basis according to a completely randomized design. Chicken fed the diet supplemented with 2% worms had the highest live weight at 10 weeks (1925 g/head vs 1823 g/head for the control). Percentage of breast and leg meat was also higher than in the control group. Chickens in the three worm groups had better FCR. The different levels of red worm supplementation did not affect meat quality (pH, color, and the rate of dehydration after storage and processing). [less ▲]

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See detailHigh Pathogenic Avian Influenza in Poultry Production Systems in Vietnam: Tentative Approach for an HACCP-like Risk Scoring Methodology
Le Bas, Cedric; Phan Dang, Thang ULiege; Desvaux, Stéphanie et al

Scientific conference (2008, December 04)

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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 ULiege; 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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