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| 宁夏地区荷斯坦牛产奶量和产犊间隔影响因素分析 |
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刘丽元1,2, 田佳2, 温万2, 张娟1, 邵怀峰2, 脱征军2, 蒋秋斐1,2, 顾亚玲1
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| (1.宁夏大学 农学院, 银川 750021;2.宁夏畜牧工作站, 银川 750001) |
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| 摘要: |
| 为探讨影响宁夏地区荷斯坦牛产奶量和产犊间隔的非遗传因素，以宁夏某奶业有限公司2012—2016年间6 236头健康中国荷斯坦牛产奶性能记录和繁殖记录为研究材料，以305 d产奶量和产犊间隔为研究对象，运用SAS8.1软件，采用多因素方差分析法分析场、胎次、初产月龄、产犊年份及产犊季节对荷斯坦牛305 d产奶量和产犊间隔的影响。结果表明：场、胎次、产犊年份、产犊季节和产犊间隔均对荷斯坦牛305 d产奶量有极显著影响（P<0.01），初产月龄对305 d产奶量有显著影响（P<0.05）；场、胎次、产犊季节和产奶量对产犊间隔有极显著影响（P<0.01）。研究发现胎次、初产月龄、产犊季节和产犊间隔是影响荷斯坦奶牛305 d产奶量的重要因素，胎次、产犊季节和产奶量是影响奶牛产犊间隔的重要因素。 |
| 关键词: 荷斯坦牛 305 d产奶量 产犊间隔 非遗传因素 |
| DOI：10.11841/j.issn.1007-4333.2018.09.08 |
| 投稿时间：2017-11-22 |
| 基金项目:自治区农业育种专项（2013NYYZ0501） |
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| Factors influencing milk yield and calving interval of Holstein dairy cow in Ningxia area |
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LIU Liyuan1,2, TIAN Jia2, WEN Wan2, ZHANG Juan1, SHAO Huaifeng2, TUO Zhengjun2, JIANG Qiufei1,2, GU Yaling1
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| (1.School of Agriculture, Ningxia University, Yinchuan 750021, China;2.Animal Husbandry Extension Station, Yinchuan 750001, China) |
| Abstract: |
| In order to investigate the factors influencing milk yield and the calving interval of Holstein cow in Ningxia, milk performance records and reproductive records from 6 236 Holstein cows were taken as experimental material from an Ningxia dairy company. By taking 305-day milk yield and calving interval as research object, the effects of SAS8.1 GLM on 305-day milk yield and calving interval were analyzed. The results showed that:Farm, parity, calving years, calving season and calving interval had highly significant effects on the milk yield (P<0.01). The age at first calving also showed significant effect on the milk yield (P<0.05). The farm, parity, calving season, and milk yield showed highly significant effects on calving interval (P<0.01). In conclusion, the parity, age at first calving and calving season were the important factors influencing the 305-day milk yield. The parity, calving season and milk yield were the important factors affecting the calving interval. |
| Key words: Holstein 305 d milk yield calving interval non-genetic factors |
