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首页> 外文期刊>Tropical Animal Health and Production >Effect of feeding strategies on weaning weight and milk production of Holstein x Zebu calves in dual purpose milk production systems
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Effect of feeding strategies on weaning weight and milk production of Holstein x Zebu calves in dual purpose milk production systems

机译：饲养策略对双乳制牛奶生产系统霍尔斯坦X Zebu犊牛断奶重量和牛奶生产的影响

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摘要

The objective of this study was to evaluate the effect of five feeding strategies on calf weaning weight, and cow milk production and composition in Brazilian Holstein x Zebu cows. A total of 60 cows and their calves were allocated to each of five treatments. Cows in treatments 1, 2 and 3 were milked for 270 days and cows in treatments 4 and 5 were milked for 180 days. Calves in treatment 1 (CON) were not supplemented with concentrate whereas calves from treatment 2 (CLPN) received 1 kg of concentrate daily from 90 to 270 days of age and calves from treatment 3 received 1 kg of concentrated from 180 to 270 days of age. Calves in treatment 4 (CCPS) were supplemented with 1 kg of concentrate from 90 to 180 days of age and calves in treatment 5 (CLPS) were supplemented with 1 kg of concentrate from 90 to 270 days of age. Calves from the CLPS treatment had greater milk and protein intakes (P 0.05) and greater growth rate than calves from the other treatments. Our results indicate that the traditional system of feeding calves with no concentrate results in a weight gain of 600 g/day. The CLPS treatment produced calves with the highest live weight and growth rate. The nutritional strategy with restricted supply of milk for the calves with concomitantly short-term concentrate supplementation does not improve performance of calves but did increase feed costs.
机译：本研究的目的是评估五种饲养策略对小牛断奶重量的影响，以及巴西Holstein X Zebu奶牛的牛奶生产和组成。共有60奶牛及其小腿分配给五种治疗中的每一个。治疗中的奶牛1,2和3次挤奶270天，并在治疗中的奶牛4和5次挤奶180天。治疗中的犊牛（CON）没有补充浓缩物，而来自治疗2（CLPN）的犊牛每天收到1千克浓缩物，每天50至270天，犊牛从治疗3中获得1千克浓度从180至270天的浓缩。治疗中的牛犊4（CCP）补充有1千克浓缩物，从90至180天，治疗5（CLPS）的犊牛补充有1千克浓缩物，从90至270天。来自CLPS治疗的犊牛具有更大的牛奶和蛋白质摄入量（P <0.05），比来自其他治疗的小牛犊更大的生长速度。我们的结果表明，传统的饲养犊牛的系统，没有浓缩物的饲喂犊牛产生600克/天的体重增加。 CLPS处理具有最高的活体重和增长率的牛犊。具有限制牛奶供应的营养策略随着短期浓缩级浓缩的牛奶的供应并未提高犊牛的性能，但确实提高了饲料成本。

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