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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Animal Science and Technology
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Journal DOI :
Korean Society of Animal Science and Technology
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Volume & Issues
Volume 53, Issue 6 - Dec 2011
Volume 53, Issue 5 - Oct 2011
Volume 53, Issue 4 - Aug 2011
Volume 53, Issue 3 - Jun 2011
Volume 53, Issue 2 - Apr 2011
Volume 53, Issue 1 - Feb 2011
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Study on Genetic Evaluation using Genomic Information in Animal Breeding - Simulation Study for Estimation of Marker Effects
Cho, Chung-Il ; Lee, Deuk-Hwan ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 1~6
DOI : 10.5187/JAST.2011.53.1.1
This simulation study was performed to investigate the accuracy of the estimated breeding value by using genomic information (GEBV) by way of Bayesian framework. Genomic information by way of single nucleotide polymorphism (SNP) from a chromosome with length of 100cM were simulated with different marker distance (0.1cM, 0.5cM), heritabilities (0.1, 0.5) and half sibs families (20 heads, 4 heads). For generating the simulated population in which animals were inferred to genomic polymorphism, we assumed that the number of quantitative trait loci (QTL) were equal with the number of no effect markers. The positions of markers and QTLs were located with even and scatter distances, respectively. The accuracies of estimated breeding values by way of indicating correlations between true and estimated breeding values were compared on several cases of marker distances, heritabilities and family sizes. The accuracies of breeding values on animals only having genomic information were 0.87 and 0.81 in marker distances of 0.1cM and 0.5cM, respectively. These accuracies were shown to be influenced by heritabilities (0.87 at
=0.10, 0.94 at
=0.50). According to half sibs' family size, these accuracies were 0.87 and 0.84 in family size of 20 and 4, respectively. As half sibs family size is high, accuracy of breeding appeared high. Based on the results of this study it is concluded that the amount of marker information, heritability and family size would influence the accuracy of the estimated breeding values in genomic selection methodology for animal breeding.
Association Study Between the Polymorphisms of Exostosin-1 Gene and Economic Traits in Hanwoo
Kim, Bum-Soo ; Kim, Nam-Kuk ; Lee, Seung-Hwan ; Cho, Yong-Min ; Heo, Kang-Nyeong ; Park, Eung-Woo ; Yang, Boo-Keun ; Yoon, Du-Hak ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 7~13
DOI : 10.5187/JAST.2011.53.1.7
The aim of this study was to identify the polymorphism on exostosin-1 (EXT1) gene and to associate with economic traits in Hanwoo (Korean cattle). We sequenced for detection of single nucleotide polymorphism (SNP) with 24 unrelated individuals and identified four SNPs (T272196A, C272359T, G290964A and A302092G). Relationship between the genotypes of 583 Hanwoo individuals by PCR-RFLP and economic traits were analyzed by general linear model. In EXT1 gene, there were four SNPs associated with economic traits such as eye muscle area breeding value, marbling score breeding value, backfat and thickness breeding value (p<0.05 to p<0.01). In conclusion, this study indicates an important role of EXT1 gene in determining the meat quality or economic characteristics in Hanwoo.
Association of Single Nucleotide Polymorphism (SNP) in the PGK 2 Gene with Growth Traits in Pigs
Jang, Hong-Chul ; Kim, Sang-Wook ; Lim, Da-Jeong ; Kim, Jae-Young ; Cho, Kyu-Ho ; Kim, Myung-Jick ; Lee, Ji-Woong ; Choi, Bong-Hwan ; Kim, Tae-Hun ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 15~22
DOI : 10.5187/JAST.2011.53.1.15
The purpose of this study was to analyse of association between growth traits and single nucleotide polymorphisms (SNPs) polymorphism of phosphoglycerate kinase 2 (PGK 2) gene in pigs. The birth weight of piglet influences on weaning weight and survival rate that are import economic traits in pig industry. Also, these growth traits are representative factor to decrease a period getting to marketing weight as well as growth rate in pig. The PGK 2 is an isozyme that catalyzes the first ATP-generating step in the glycolytic pathwayand important enzyme related with energy metabolism. Twenty of SNPs were discoveredby genome structure analysis that compares the sequence on promoter and transcription region of PGK 2 gene in porcine chromosome 7. An association between PGK 2 SNPs and growth traits was analyzed in
reciprocal-crossbred population between korean native pig (KNP) and Landrace. Association analysis indicated that polymorphism of the PGK 2 gene promoter region has significant effects on weight at birth (p<0.01) and weight at 3 weeks of age (p<0.0001). These results suggest that PGK 2 gene polymorphism was associated with energy metabolism and physiological function of growth in pig.
A Breed Comparison on the Finishing Times of Racehorses
Kong, Hong-Sik ; Lee, Hak-Kyo ; Park, Kyung-Do ; Cho, Byung-Wook ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 23~27
DOI : 10.5187/JAST.2011.53.1.23
This study was conducted to provide basic information for the improvement of racing performance of Jeju pony & Halla horse, using the 85,732 racing records collected from Jeju & Kwacheon racecourses from January 1, 2005 to December 31, 2009. During the last 5 years, a total of 2,892 heads of horses were racing at the Jeju racecourse and 11.7% (338 heads) of them were Jeju ponies. The average body weight of Jeju pony and Halla horse were 267 kg & 287 kg, respectively, which were 58% and 62% of that of Thoroughbred (460 kg). The repeatabilities of Jeju pony, Halla horse and Thoroughbred for finishing time were estimated in the range of 0.26-0.66 (average, 0.54), 0.34-0.68 (average, 0.56) and 0.37-0.60 (average, 0.50), respectively, and as the racing distance increased, the repeatabilities decreased. In the racing distance of 1,000 m, the differences in the finishing times between Thoroughbred & Jeju pony, Thoroughbred & Halla horse, and Jeju pony & Halla horse were 24.33 seconds, 10.81 seconds and 13.52 seconds, respectively. The racing performance of Halla horse was improved by 55.6% than that of Jeju pony at the 1,000 m race.
An Empirical Study on Verifying the Estimated Discrimination and Parentage Test Powers of the 13 Traceability Microsatellite Markers for Commercial Pigs Produced by a Three-way Cross
Lim, Hyun-Tae ; Kim, Byeong-Woo ; Cho, In-Cheol ; Yoo, Chae-Kyoung ; Park, Moon-Sung ; Park, Hee-Bok ; Lee, Jae-Bong ; Lee, Jung-Gyu ; Jeon, Jin-Tae ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 29~34
DOI : 10.5187/JAST.2011.53.1.29
Using the materials collected from nine farms in a three-way cross system to produce commercial pigs produced from F1 sows (Landrace
Duroc, the power of individual discrimination and parentage of the 13 microsatellite (MS) marker set that has been suggested for individual/brand identification (traceability) was empirically tested. Initially, genotypes of the parental population (
sows and Duroc), and commercial pigs were determined and the genotype frequency and polymorphic index were estimated using the Cervus 2.0 program. The probability of identity among genotypes of random individuals, that random half sibs and that of full sib individuals, based on the genotypes from 91
sows and Duroc were expected to be
, respectively, using the API-CALC version 1.0 program. When commercial pigs were included, the estimates increased to
, respectively. For the empirical verification of the estimated powers of individual discrimination and parentage, the parentage test was performed for 452 commercial pigs using PAPA version 2.0, and individuals with the same genotype were investigated using the Cervus version 2.0 program. Parents for all commercial pigs were successfully estimated and no identical individual was identified in the pedigree. Although the individual discriminating power was not fully verified because of the lack of individuals corresponding with the theoretical power, the 100% efficiency of parentage test was clearly confirmed. Therefore, we believe that the 13 MS marker set in conjunction with management record/information for the pig production kept in a farm/brand should be useful in the pork traceability in a brand unit.
Molecular Genetic Evaluation of Korean Native Pig Populations Based on Microsatellite Markers
Lee, Poong-Yeon ; Wee, Mi-Soon ; Ko, Yeoung-Gyu ; Son, Jun-Kyu ; Lee, Seung-Soo ; Jin, Hyun-Ju ; Yeon, Seong-Heum ; Yoo, Yong-Hee ; Cho, Chang-Yeon ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 35~42
DOI : 10.5187/JAST.2011.53.1.35
The study was conducted to select and optimize microsatellite (MS) markers for evaluation of Korean native pig (KNP) populations in order to provide standard for the classification and breed definition of the indigenous breeds. The study also aimed to characterize and classify each KNP populations. A total of 648 pigs from 17 pig populations including six KNP, four Chinese native pig and four commercial pig populations were analyzed with 26 MS markers. KNP populations formed separate cluster from those of Chinese native pig and introduced pig populations. Expected heterozygosity (He) of KNP populations were 0.48~0.55 except two populations with 0.65. Genetic distances between KNP populations were relatively shorter: 0.12-0.34. Among six KNP populations, three showed high genetic uniformity, two showed lower uniformity and one showed high level of impurity and heterozygosity. The results can be used to evaluate and manage animal genetic resources at national scale.
Effects of Dietary Green Tea Probiotics, Alisma canaliculatum (Alismatis rhizoma) Probiotics and Fermented Kelp Meal as Feed Additives on Growth Performance and Immunity in Pregnant Sows
Kim, Ki-Soo ; Kim, Gwi-Man ; Ji, Hoon ; Park, Sung-Wook ; Yang, Chul-Ju ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 43~50
DOI : 10.5187/JAST.2011.53.1.43
An investigation was done to evaluate the effects of adding green tea probiotics, Alisma canaliculatum probiotics and fermented Kelp meal on the growth performance and immune response in sows and piglets. A total of 32 pregnant sows were assigned to 4 treatments in 8 replications with 1 sow as a replicate in this experiment from 2 months before parturition to 28 days after parturition. Three hundred nineteen (319) piglets were produced from experimental sows after parturition. The dietary treatments were CON group (without antibiotics), GTP (basal+green tea probiotics, 0.5% of the diet), ACP group (basal + Alisma canaliculatum probiotics, 0.5% of the diet) and FKM group (basal+fermented Kelp meal, 0.5% of the diet). Litter size and body weight at birth and weaning size and body weight at weanling in piglets were greater in additives group compared to CON group but no statistical differences were found (P>0.05). Diarrhea score showed a decreasing tendency with three additives groups compared to CON group. The lymphocytes in blood of sows fed ACP and FKM group were significantly higher compared to CON group (P<0.05), and the MID of GTP and FKM group were significantly lower compared to CON group (P<0.05). The serum IgG concentration in sows tended to increase with additives groups compared to CON group and the serum IgA and IgM concentration in GTP and FKM group were significantly higher compared to ACP group (P<0.05). The cortisol levels showed a decreasing tendency in additives groups without statistical differences among the groups (P>0.05). Based on these observations, it can be inferred that the GTP and FKM may have such efficacy as antibiotics in growing pigs.
Effect of Grass Filter Strips on NO
-N in Runoff from Forage Cropland
Jo, Nam-Chul ; Kim, Won-Ho ; Seo, Sung ; Yoon, Sei-Hyung ; Lee, Ki-Won ; Choi, Ki-Choon ; Jung, Min-Woong ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 51~57
DOI : 10.5187/JAST.2011.53.1.51
The performance of grass filter strips (GFS) in abating
-N concentrations from the forage cropland was tested in an experiment on the 10% slope in Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration (RDA) from October 2007 to September 2009. Forage croplands with rye-corn double cropping system applied with chemical fertilizer and livestock manure (LM) were compared in a natural condition. The plots were hydrologically isolated in a randomized block layout of 3 treatments
3 replicates. Main plots consisted of the length of GFS, such as 0 m, 5 m, 10m and 15m. Sub plots consisted of the type of LM, such as chemical fertilizer (CF), cattle manure (CM) and swine manure (SM). Dry matter yields of rye and corn increased significantly in order of CF > CM > SM (p<0.05). Concentrations of
-N in surface runoff water were reduced as the length of GFS increased. Especially, GFS with 10 m and 15m reduced
-N concentrations significantly compared to that with 0 m and 5 m (p<0.05). The results from this study suggest that GFS improved the removal and trapping of manure nutrients from forage croplands.
Analysis of Honeybee-Keeping Management Types and Skills Level in Korea
Kim, An-Sig ; Seok-Eun, Kim ; Gye-Woong, Kim ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 59~66
DOI : 10.5187/JAST.2011.53.1.59
For the improvement of productivity of beekeepers and to develop new management strategy through the analysis of current honeybee-keeping management types and evaluation of related skills and basis in Korea were surveyed. The serial surveys were carried out in 2008 for a total of 253 beekeepers from different localities in Korea. The results revealed that 145.9 colonies of honeybee were managed by each beekeeper in Korea. The beekeepers group who were younger than 55 years possessed 191.7 colonies. The older age group of beekeepers kept rather smaller number of colonies. The career groups over 15 years in apiculture were keeping 176.0 colonies in average. The numbers of bee colonies were not significantly different among localities and educational backgrounds. The migratory apiaries with 145.9 hives were dominant than those fixed ones with 83.0 (p<0.01). It was observed that 57.8% of apiaries were located in the vicinity of farmer's house, whereas 30.3% were managed in mountain area; however older group (65.4%) preferred to keep it near their houses (p<0.05). The proportion (35.7%) of part-time fixed apiary was the highest among four apiary management types. The younger group and high career group operated full-time migratory apiary (38.8% and 40.3%) (p<0.05), respectively. However, the older group and low career group preferred as part-time fixed one (43.2% and 46.6%), respectively (p<0.001). There was no significant difference among localities. The surveyed beekeepers produced propolis, commercial colonies, pollen, royal jelly, and pollination hives in addition to honey. The group of less than 15 years career and mountain apiary mainly produced propolis and pollen. However, those who dwell in small and middle areas mainly produced propolis and commercial colonies. The levels related to beekeeping skills and basis were evaluated as intermediate from 3.11 and 2.86 points on 5 points scale, respectively. More careered group having skill level of 3.33 point and basis level of 3.02 showed higher levels than less careered one. The levels of skill and basis evaluated from age groups and localities were similar with each other with no significance.
Study on the Management Level of Pathogenic Bacteria in HACCP System Implemented Animal Farms
Lee, Gi-Yun ; Lee, Joo-Yeon ; Back, Seung-Hee ; Hwang, In-Jin ; Lee, Kyung-Soon ; Kim, Young-Su ; Kim, Byoung-Hoon ; Kim, Hyun-Soo ; Kang, Soo-Cheol ; Cho, Jea-Jin ; Park, Min-Seo ; Suk, Hee-Jin ; Nam, In-Sik ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 67~74
DOI : 10.5187/JAST.2011.53.1.67
The aim of this study was to understand the management level of pathogenic bacteria in HACCP system implemented animal farms. Microbial samples were collected from manure, floor, compost depot, manure on belt, low milk tank, dust in laying house and egg collector in HACCP system implemented Korean beef cattle, dairy cattle, swine, and laying Hens farms. O157, O111 and O26 strains of E. coli were not detected in HACCP system implemented Korean beef cattle farm. The detection rate of E. coli from manure and floor in HACCP system implemented cattle farms (Korean beef cattle and dairy farm) was lower than those of non-HACCP system implemented cattle farm. Salmonella spp. was detected in HACCP system implemented cattle farms (Korean beef cattle and dairy farm). Compared with pervious studies, lower detection rate of Salmonella spp. at floor and compost depot in HACCP system implemented swine and commercial layer farms were indicated. In conclusion, implementation of HACCP system in animal farms would enhance the management level of biological hazard compare to normal animal farms.
Effects of Fermented Turmeric Extracts on the Obesity in Rats Fed a High-Fat Diet
Yang, Cheul-Young ; Cho, Mi-Jin ; Lee, Chi-Ho ;
Journal of Animal Science and Technology, volume 53, issue 1, 2011, Pages 75~81
DOI : 10.5187/JAST.2011.53.1.75
This study was designed to investigate the effects of fermented turmeric extract on body weight, abdominal fat mass and biochemical markers related to obesity in rats fed high fat diet. Turmeric and brown sugar was equally mixed and fermented for one year. Wistar rats (weighing about 125 g (15 rats)) were divided into three groups: high fat diet (20.9%) and brown sugar 7.2% (HFD), turmeric powder in replace of corn starch 12.8%, brown sugar 7.2% (TP), fermented turmeric powder 20% (FTP) for four weeks. The final body weight was about 425g. The retroperitoneal fat weights in TP group showed the tendency to decrease regardless of feed intake in the rats. Serum levels of total cholesterol and LDL-cholesterol in the FTP group showed the lowering tendency than those of the HFD group (p<0.05). Serum levels of leptin, adiponectin and aspartate aminotransferase (AST) in the FTP group was significantly (p<0.05) lower than that of the HFD group, and serum level of tumor necrosis factor-
) in all the groups were similar. These results suggest that fermented turmeric extract might be effective to prevent obesity in rats fed high fat diet.