非遗传因素对埃塞俄比亚中部高原纯泽西奶牛产乳性状的影响

Nibo Beneberu, Wossenie Shibabaw, K. Getahun, Kefyalew Alemayehu
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引用次数: 1

摘要

本试验旨在研究非遗传因素对半集约管理纯泽西奶牛产奶量性状的影响。从1986年至2019年共收集了2912头泽西奶牛的记录,并使用(SAS, 9.0版本)进行分析。泌乳量(LMY)、日产奶量(DMY)和泌乳时长(LL)的总体最小二乘平均值(LSM±SE)分别为2166.10±26.71 l、6.37±0.05 l和344.89±3.81 d。泌乳量(LMY)、日产奶量(DMY)和泌乳时长(LL)受动物类群、年份和胎次等非遗传因素的影响。产乳性状不受产犊季节的影响。了解这些非遗传因素对产奶量性状的影响将有助于制定改善畜群的管理决策。
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Effect of Non-genetic Factors on Milk Production Traits of Pure Jersey Dairy Cattle in Central Highland Ethiopia
The study was conducted to investigate the effects of non-genetic factors on Milk production traits of pure Jersey dairy cattle semi-intensively managed at on station. A total of 2912 records from pure Jersey dairy cattle were collected from 1986 to 2019 and analysed by (SAS, version 9.0). The overall least squares mean (LSM±SE) for lactation milk yield (LMY), daily milk yield (DMY) and lactation length (LL) were 2166.10±26.71 Litres, 6.37±0.05 Litres and 344.89±3.81 days, respectively. Lactation milk yield (LMY), daily milk yield (DMY) and lactation length (LL) were influenced by non-genetic factors such as animal group, year and parity. But, milk production traits were not affected by calving season. Knowledge on the effect of these non-genetic factors on milk production traits would help in making management decisions for improvement of the herds.
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