Effect of selected factors on the body condition of dairy cows managed in the free-stall and tie-stall housing systems

P. Sablik, E. Januś, M. Szewczuk, S. Vovk, Nicola Padzik
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引用次数: 1

Abstract

The analysis involved results of 6891 body condition evaluations carried out on 680 Polish Holstein-Friesian Blackand-White cows from two herds belonging to the same owner, although managed in different husbandry systems. The evaluation was carried out within two years using a 5-point scale, with an accuracy of 0.25 points. It was found that the most frequent score was 3.0 BCS (more than 24% of cows), in the tie-stall system, and 3.25 BCS (over 26%), in the free-stall housing system. The distribution of BCS scores of the cows with different daily productivity, of different ages and evaluated in different seasons of the year was significantly correlated with the applied housing system. Cows with the highest daily milk yield (>35 kg), younger cows (in the second lactation) and those evaluated in the summer had the least favorable distribution of body condition scores and their average values as compared to other groups. It was shown that cows kept on tether were more often receiving extreme body condition scores, i.e. not more than 2.0 points or 4.0 and more BCS points, as compared to cows managed in the free-stall housing system.
选定因素对自由栏和捆绑栏奶牛体况的影响
该分析涉及对680头波兰荷尔斯坦-弗里西亚黑白奶牛进行6891次身体状况评估的结果,这些奶牛来自同一所有者的两个畜群,尽管在不同的饲养系统中进行管理。评估在两年内进行,采用5分制,准确率为0.25分。结果发现,拴栏系统中最常见的是3.0 BCS(超过24%),自由栏系统中最常见的是3.25 BCS(超过26%)。不同日产能、不同年龄、不同季节评价奶牛的BCS评分分布与适用的圈养制度显著相关。日产奶量最高的奶牛(50 ~ 35 kg)、较年轻的奶牛(第二次泌乳)和夏季评估的奶牛的体况评分及其平均值分布与其他组相比最不利。结果表明,与自由栏饲养的奶牛相比,系绳饲养的奶牛更容易获得极端身体状况得分,即不超过2.0分或4.0分以上的BCS分。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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