Current Issue
December, 2024
- Vol. 8 No. 04
Research Article
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Development and implementation of genomic selection model for economic traits in Korean native cattle (Hanwoo)
This study investigates the genomic prediction accuracy for four carcass traits (Backfat thickness, Eye muscle area, Carcass weight and Marbling score) and one reproduction trait (Calving Interval) using customized genotyping platform (NHanwoo1) in Korean native cattle. We use 65,351 genotyped animals …
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The impact of genes and hormones on canine behavior: A review of recent research
The pet industry in Korea is rapidly growing with social changes such as an increase in single-person households and an aging population. As ownership of companion animals increases, problems related to dog behavior, especially aggression, become more prominent. Based on recent research, this paper …
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Genome-wide association study identifies loci influencing resistance to Edwardsiellosis in olive flounders (Paralichthys olivaceus)
The olive flounder (Paralichthys olivaceus) is one of the most economically important fish species in South Korea’s aquaculture industry. However, Edwardsiellosis, caused by Edwardsiella tarda (E. tarda), poses a significant threat to this industry, resulting in high mortality rates and economic losses. The aim of …
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Genome-wide association study identifies loci affecting resistance to Scuticociliatosis in olive flounders (Paralichthys olivaceus)
Olive flounders (Paralichthys olivaceus) hold significant economic values in the aquaculture sector of South Korea. Scuticociliatosis, caused by several parasite species, poses an important threat to the aquaculture industry, particularly in olive flounders. Developing resistance to this disease is vital for sustainable …
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Analysis of pedigree structure and inbreeding coefficient for Jersey dairy cattle in Korea
This study was conducted to analyze the pedigree information of the Korean Jersey dairy cattle breed and to determine how the inbreeding coefficient is changing. A total of 3,624 pedigree data for 976 Jersey cows were used for the analysis, and the pedigree completeness index (PCI) and inbreeding …
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Transcriptome analysis for DEG profiling related to meat color in pigs
Studies have shown that consumers prioritize meat color, an easily evaluated trait, when selecting meat products. However, meat color traits are only observable post-slaughter, making them difficult to target for selective breeding. Therefore, this study aimed to identify potential candidate genes associated …
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A Genome-Wide Association Study of Age at First Calving and Calving Interval Trait in Hanwoo Cow (Korean Brown Cattle)
In this study, we conducted a Genome Wide Association Study (GWAS) analysis of the reproductive traits in Hanwoo cows, Age at First Calving (AFC) and Calving Interval (CI), aiming to pinpoint candidate genes and their functional relevance. A total of 24,977 Hanwoo cows from commercial farms were genotyped using …
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Analysis on the Contribution of Parturition Environment Factors to Birth Weight and Gestation Period in Hanwoo
This study was designed to determine the environmental factors influencing birth weight and gestation period in Hanwoo by analyzing reproductive records from 2011 to 2023 of 370,444 cows. Initial statistical analyses revealed the average birth weight to be 27.27± 2.48 kg and the average gestation …
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A Study on the Estimation of Environmental Effects of Hanwoo Steers Carcass Traits
This study was conducted to investigate the effects of environmental factors on the carcass traits of Hanwoo cattle. We collected carcass data of 1,703,304 animals of castrated cattle, which were raised by Korean beef farmers nationwide from 2009 to 2019 and registered as pedigree with the Korea Animal …
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Effects of estimated breeding values of sires on the performance of steer progeny in Hanwoo carcass traits
One of the main objectives of this study was to compare the differences of mean phenotypic values among steer progeny from 632 Korean proven bulls (KPN) with respect to their sire grade. Each sire was classified into one of the four grades (A, B, C, and D) on the quartiles of total index calculated by …
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Contributions Analysis of Carcass Traits on Auction Prices and Total Prices for Hanwoo in Chungcheong Region of Korea
This study analyzed the slaughter data of 12,277 Hanwoo cattle from the Chungcheong region (2021 and 2023), and 52,233 cattle from other regions in order to investigate the contribution of carcass trait to auction price. Multiple regression analysis was used to determine the contribution of carcass traits including …
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Transcriptomic Profiling of Growth Stage-Specific Gene Expression in Hanwoo Liver
This study investigates gene expression changes in Hanwoo liver tissue across early growth stages to understand the molecular mechanisms underlying liver development and immune functions. Using weighted gene co-expression network analysis (WGCNA), we analyzed liver samples from 10 days (n = 3), 2 months (n = 10) …
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Estimation of genetic parameters and genetic evaluation of Hanwoo lean meat traits using BLUP
The goal of Hanwoo breeding is to produce large quantities of high-quality beef at a low cost. Breeding research has led to an increase of more than 100 kg in the average carcass weight of Hanwoo cattle. However, carcass weight includes bone and inedible fat, which differ from the percentage of lean …
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Associations of FABP3 genotypes with Pork Belly Traits in pigs
Fatty Acid Binding Protein 3 (FABP3) is important for the transport and metabolism of intracellular fatty acids, and the genetic variants of FABP3 gene have been known to affect fat accumulation in pigs. Here, we aimed to investigate FABP3 single nucleotide polymorphism (SNP) focusing on the pork belly …
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Comparison of parentage test for Hanwoo identity test marker combinations
The identity and parentage verification tests for Hanwoo play a crucial role not only in preventing fraudulent distribution in the market but also in generating greater profits in calf transactions by verifying the parentage of superior bloodlines. Therefore, this study secured the genotypes of 946 Hanwoo cattle …
