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Oh, Dongyep,Ha, Jae Jung,Yi, Jun Koo,Kim, Dae Hyun,Oh, Seung Min,Kim, Songmi,Han, Kyudong,Park, Yong-Soo The Korean Society of Animal Reproduction and Biot 2021 한국동물생명공학회지 Vol.36 No.3
This study identified single nucleotide polymorphisms (SNPs) that affect the body weight of chickens. Analysis of body weight showed that the Cornish breed had the highest body weight, and the Korean native chicken (Gray Brown) had the lowest body weight. TSH is composed of an α-subunit and a β-subunit, and the TSH-β gene encoding the β-subunit has been reported to be associated with obesity. In chickens, it is located on chromosome 26 and is reported to be associated with growth. The calcium-sensing receptor gene (CaSR) plays a role in the regulation of extracellular calcium homeostasis and is responsible for calcium absorption in the urinary tract, which affects the eggshell quality in poultry. It was shown that TSH-β was strongly correlated with weight in Cornish and Korean native (Gray Brown) chickens, particularly in those with the CC trait. However, CaSR showed no association with body weight in poultry; it was associated with calcium and the eggshell. Thus, selection for TSH-β can be used to produce individuals with more favorable traits in terms of body weight.
Dongyep Oh,Jae Jung Ha,Jun Koo Yi,Dae Hyun Kim,Seung Min Oh,Songmi Kim,Kyudong Han,Yong-Soo Park 한국동물생명공학회(구 한국동물번식학회) 2021 Journal of Animal Reproduction and Biotechnology Vol.36 No.3
This study identified single nucleotide polymorphisms (SNPs) that affect the body weight of chickens. Analysis of body weight showed that the Cornish breed had the highest body weight, and the Korean native chicken (Gray Brown) had the lowest body weight. TSH is composed of an α-subunit and a β-subunit, and the TSH-β gene encoding the β-subunit has been reported to be associated with obesity. In chickens, it is located on chromosome 26 and is reported to be associated with growth. The calcium-sensing receptor gene (CaSR) plays a role in the regulation of extracellular calcium homeostasis and is responsible for calcium absorption in the urinary tract, which affects the eggshell quality in poultry. It was shown that TSH-β was strongly correlated with weight in Cornish and Korean native (Gray Brown) chickens, particularly in those with the CC trait. However, CaSR showed no association with body weight in poultry; it was associated with calcium and the eggshell. Thus, selection for TSH-β can be used to produce individuals with more favorable traits in terms of body weight.
Effect of Egg Yolk Combination on Freezing thawed Semen Function in Korean Hanwoo Bull
JunKoo Yi,Jaejung Ha,Dongyep Oh,Zae Young Ryoo 한국동물생명공학회(구 한국동물번식학회) 2017 발생공학 국제심포지엄 및 학술대회 Vol.2017 No.10
Since the first report of the successful preservation of sperm, cryopreservation has been applied as a routine technique for processing bovine sperm in artificial insemination (AI), and numerous studies have been carried out to evaluate fundamental biological properties. Although fertility with frozen–thawed bull semen was generally acceptable for AI, the cryopreservation techniques at the time still resulted in the loss of 40 ~50% of viable sperm during the freezing–thawing process with little improvement over the last several decades. Cold shock, osmotic stress, ice crystal formation or oxidative damage were the main sources of sperm cryoinjury, and finally caused the loss of sperm viability and fertility. This study was designed to compare fresh and insemination egg yolk in an extender for cryopreservation of Hanwoo bull semen. Sperm motility, plasma membrane integrity and viability were assessed at different stages of cryopreservation (post-dilution, pre-freezing and post-thawing). Sperm plasma membrane integrity remained similar at all the stages of cryopreservation. Sperm motility and viability were significantly higher after thawing in the extender containing insemination egg yolk. In conclusion, insemination egg yolk may be used in an extender for the cryopreservation of Hanwoo bull spermatozoa.
Change of Blood Composition and Expression Genes by the High Fat Diet in Mice
JunKoo Yi,Jaejung Ha,Dongyep Oh,Myoung Ok Kim 한국동물생명공학회(구 한국동물번식학회) 2017 Reproductive & Developmental Biology(Supplement) Vol.41 No.2
Obesity is a risk factor for various diseases, including cardiovascular disease, diabetes, renal disease, hypertension, cancer, and neural disease. Adipose tissue in animals is important for the mobilization of lipids, milk production, deposition of fat in different depots, and muscle and meat production. Understanding the genetic and physiological causes of metabolic disease is a priority in biomedical genome research. In this study, we examined several variables in mice fed a high-fat diet, including serum composition, body weight, total calorie intake, and differentially ex\-pressed genes. Body weight and blood glucose levels were not significantly different between animals fed high-fat and normal diets. However, high-fat diet groups showed reduced calorie and food intakes. Levels of sodium, ionized calcium, glucose, hematocrit, hemoglobin, pH, PCO2, PO2, TCO2+, HCO3+, base excess, and SO2 in the blood were not significantly different between mice fed high-fat and normal diets. Serum potassium concentration, however, was lower in mice a high-fat diet. Differentially expressed genes were also compared between the two groups. The purpose of this study was to discover new genes as a result of annealing control primer (ACP) PCR using 20 random primers. Five down regulated genes were identified and three of others were up-regulated by high-fat diet. Known genes were excluded from this result. In addition, the relationships among candidate genes and high-fat diet should be investigated according to potassium concentration in the blood. In conclusion, mice fed normal and high-fat diets showed no significant difference in body weight, whereas high-fat diet led to changes in blood composition and differential expression of several genes. These findings may provide a better understanding of the mechanisms underlying the association between obesity and metabolic diseases.
Kim Songmi,Lee Yong-Moon,Kim Dong Hee,Ha Jae Jung,이준구,김대현,Oh Dongyep,한규동 한국유전학회 2021 Genes & Genomics Vol.43 No.8
Background Recently, many researchers focus on the best way to produce high-quality meat, as the trend in food consumption today is to focus on quality. In general, consumers’ preferences in beef difer depending on taste and meatiness. Therefore, researchers are interested in how the marbling score afects the favors of meat or the various factors that make up the meatiness to captivate the consumers’ tastes. Objective This study identifes single nucleotide polymorphisms (SNPs) or gene combinations that afect the carcass traits of Korean cattle (Hanwoo) by using the multifactor dimensionality reduction (MDR) method. Methods We collected the candidate SNPs to identify SNPs related to marbling scores from whole-exome sequencing and bovine SNP genotyping data. Using 96 Hanwoo samples, we performed PCR amplifcation to investigate the polymorphism status. In addition, we investigated genetic relationships between carcass traits and SNPs using 612 Hanwoo samples. Furthermore, each candidate SNP genotype and the combinations of SNP genotypes were verifed to improve the accuracy of genetic relationships using MDR method. Results Twenty-four candidate SNPs associated with carcass trait and marbling scores were identifed from SNP genotyping and whole-exome sequencing. Among them, three SNP markers (c.459 T>C of the PLCB1 gene, c.271 A>C of the C/EBPα gene, and g.17257 A>G of the TDRKH gene) were showed statistically signifcant diferences between intramuscular fat and genotypes. Especially, two candidate SNPs, including c.459 T>C located in the PLCB1 gene and c.271 A>C located in the C/ EBPα gene, could be highly associated with the intramuscular fat of Hanwoo quality grade. In addition, the combination of SNP genotypes is showed higher signifcant diferences with carcass weight, backfat thickness, and longissimus dorsi muscle area. Conclusion Three SNP genotypes and the combination of SNP genotypes in the PLCB1, C/EBPα, and TDRKH genes may be useful genetic markers for improving beef quality.