饲喂次数对全自动挤奶系统奶牛采食量、泌乳性能和反刍时间的影响

发布时间：2018-06-05 05:16

本文选题：奶牛 + 全自动挤奶系统　；参考：《中国饲料》2017年09期

【摘要】：本试验旨在研究饲喂次数对全自动挤奶系统(AMS)奶牛采食量、泌乳性能和反刍时间的影响。选取32头体重相近、处于泌乳中期、日均产奶量相近的健康荷斯坦奶牛分为2组,分别为FF1组:日给饲1次(8∶30)和FF2组:日给饲2次(8∶30和17∶30),每组16头(初产牛和经产牛各8头)。预试期10 d,正式期56 d。试验结果表明:FF2组每头奶牛比FF1组多采食颗粒精料0.79 kg/d,全混合日粮(TMR)少采食0.92 kg/d,差异极显著(P0.01),但总干物质采食量(DMI)差异不显著(P0.05);两组奶牛的产奶量、乳脂率、乳蛋白率、非脂乳固形物和体细胞数均差异不显著(P0.05);和FF1组相比,FF2组奶牛挤奶间隔时间缩短了1.17 h/d,挤奶频率增加了0.5次/d,挤奶平均持续时间缩短了0.5 min/次,门通道次数增加了3.49次/d,且均差异极显著(P0.01);两组奶牛的反刍时间无显著差异(P0.05)。由此可见,采用AMS挤奶时,TMR的日给饲次数由1次增加到2次时对奶牛的采食量和生产性能没有显著影响,但对挤奶相关参数有明显的改善,促进了奶牛流向,提高了AMS的运行效率。
[Abstract]:The purpose of this study was to study the effects of feeding times on feed intake, lactation performance and ruminating time of AMS cows. 32 healthy Holstein cows with similar body weight, middle lactation and similar daily milk yield were divided into two groups. FF1 group (8: 30) and FF2 group (8: 30 and 17: 30) were fed twice daily with 16 heads in each group (n = 8, n = 8). The pre-test period was 10 days and the formal period was 56 days. The results showed that 0.79 kg / d of pellet concentrate and 0.92 kg / d of total mixed diet TMRs per cow in FF2 group were less than those in FF1 group, the difference was significant (P 0.01), but there was no significant difference in total dry matter intake (DMI) between the two groups, the milk yield, milk fat rate, milk protein rate, milk yield, milk fat rate, milk protein rate, Compared with the FF1 group, the milking interval of the FF2 group was shortened by 1.17 h / d, the milking frequency was increased by 0.5 times / d, and the average milking duration was shortened by 0.5 min/. The number of gate channels increased by 3.49 times per day, and the difference was very significant (P 0.01), and there was no significant difference in ruminant time between the two groups (P 0.05). It can be seen that the daily feeding times of AMS milking have no significant effect on the feed intake and production performance of dairy cows from 1 to 2 times, but it can improve the milking parameters obviously and promote the flow direction of cows. The efficiency of AMS is improved.
【作者单位】：北京奶牛中心;中国农业科学院北京畜牧兽医研究所;
【基金】：国家863计划课题“奶牛重要经济性状的功能基因组学研究”(2013AA102504) 现代奶牛产业技术体系北京市创新团队岗位专家课题
【分类号】：S823.5

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