影响埃及水牛分娩难易度的因素。

Factors affecting calving ease in Egyptian buffalo.

机构信息

1Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture, Egypt.

Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Egypt.

出版信息

Reprod Domest Anim. 2021 Feb;56(2):370-373. doi: 10.1111/rda.13834. Epub 2020 Nov 21.

DOI:10.1111/rda.13834

PMID:32996263

Abstract

Calving ease (CE) is a trait of economic importance that affects animal welfare and farm profitability. The objective of present study was to investigate genetic and environmental factors affecting CE among Primiparous (PP) and multiparous (MP) buffaloes. A total of 9,627 records from 1999 MP and 2,110 PP recorded during the period from 1988 to 2018 were considered. Herd, season of calving, year of calving, birth weight, parity order and gestation length significantly affected CE rate, while age at first calving and sex of calf had no significant effects. Direct and maternal heritabilities of CE in PP and MP were 0.06 and 0.01, respectively. The low heritability of CE indicated that direct selection may not be an effective method to improve CE trait in Egyptian buffalo.

摘要

产犊容易度（CE）是一个具有经济重要性的特征，它影响动物福利和农场盈利能力。本研究的目的是调查影响初产（PP）和经产（MP）水牛 CE 的遗传和环境因素。考虑了 1988 年至 2018 年期间总共 9627 条 1999 年 MP 和 2110 条 PP 的记录。牛群、产犊季节、产犊年份、初生重、胎次和妊娠期长度对 CE 率有显著影响，而初产年龄和犊牛性别则无显著影响。PP 和 MP 的 CE 直接和母体遗传力分别为 0.06 和 0.01。CE 的低遗传力表明，直接选择可能不是改善埃及水牛 CE 性状的有效方法。