Abstract：
Mithun (Bos frontalis), a domestically raised herbivore, holds significant economic importance for the farming community of Northeast India. This study aimed to elucidate the genetic parameters governing Mithun body weight traits across different ages using data from the sole organized semi-intensive Mithun farm in India. Information was gathered from 110 Mithuns born over a period spanning from 2011 to 2022. Body weight taken at week 1 (W1), 1-month (M1), 3-months (M3), 6-months (M6), 9-months (M9), 12-months (M12), 30-months (M30) and 45-months (M45) were considered for the study. The genetic parameters estimation employed the BLUPF90 suite of programs, incorporating univariate Gibbs sampler animal model with fixed effects; season and period of birth, and sex of the animal. Variance and covariance components, including direct additive genetic effects, were estimated. Heritability estimates for the eight body weight traits ranged from 0.47 ± 0.0050 to 0.50 ± 0.0043, indicating varying genetic influence across growth stages. Results revealed that Mithun herd has a substantial genetic variability for growth traits and therefore there is ample scope to select for a better growth rate. Here, we conclude that Month 12 (M12) and Month 9 (M9) body weights exhibit higher heritability, indicating potential for genetic improvement through selective breeding.
摘要：
Mithun（Bosfrontalis），一个国内饲养的食草动物，对印度东北部的农业社区具有重要的经济意义。这项研究旨在使用来自印度唯一有组织的半密集型Mithun农场的数据，阐明控制不同年龄Mithun体重特征的遗传参数。信息是从2011年至2022年出生的110名Mithuns收集的。第1周的体重（W1），1个月（M1），3个月（M3），6个月（M6），9个月（M9），12个月（M12），研究考虑30个月（M30）和45个月（M45）。遗传参数估计采用BLUPF90程序套件，纳入具有固定效应的单变量吉布斯采样器动物模型；出生季节和时期，和动物的性别。方差和协方差分量，包括直接加性遗传效应，估计。八个体重性状的遗传力估计范围为0.47±0.0050至0.50±0.0043，表明整个生长阶段的遗传影响不同。结果表明，Mithun牧群的生长性状具有相当大的遗传变异性，因此有足够的余地选择更好的生长速率。这里,我们得出结论，第12个月(M12)和第9个月(M9)体重表现出更高的遗传力，表明通过选择性育种进行遗传改良的潜力。
