Effects of space allowance during transport and duration of mid-journey lairage period on the physiological, behavioural and immunological responses of young calves during and after transport
Effects of space allowance during transport and duration of mid-journey lairage period on the physiological, behavioural and immunological responses of young calves during and after transport
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DOI：
10.1017/s135772980005832x
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发表时间：
2001-10-01
期刊：
影响因子：
--
通讯作者：
Brown, HK
中科院分区：
文献类型：
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作者：
Grigor, PN;Cockram, MS;Brown, HK
运输期间和运输后的空间津贴的影响和持续时间的中期行程栏期间的应力，损伤，脱水，食物限制和休息的测量年轻小牛进行了评估。将小牛组运输两次9小时的行程（每头小牛的空间允许量为0.375或0.475 m（2）），中间间隔1或22小时的中途停留期。非运输小牛提供牛奶和饮用水，无论是在通常的时间或仅在同一时间作为运输calves.During运输，运输小牛花了显着更少的时间躺下，并有更大的血浆皮质醇浓度比对照组小牛。在所使用的驾驶条件下，空间裕度的增加与更大的伤害或稳定性的丧失无关。中途停留的持续时间不是一个重要因素;较短的停留时间，使小牛有足够的时间接受牛奶消毒剂，但很少有机会休息，没有重大的不利影响的变量用于评估福利。虽然几乎没有证据表明运输影响免疫学变量，但有一些证据表明运输后对小牛的健康产生了不利影响。
The effects of space allowance during transportation and duration of a mid journey lairage period on measurements of stress, injury, dehydration, food restriction and rest in young calves were assessed during and after transport. Groups of calves were transported for two 9-h journeys (at a space allowance of either 0.375 or 0.475 m(2) per calf) separated by a mid-journey lairage period of either 1 or 22 h. Non-transported calves were offered milk replacer and drinking water either at the usual times or only at the same times as the transported calves.During transport, transported calves spent significantly less time lying down and had a greater plasma cortisol concentration than control calves. Under the driving conditions used, increased space allowance was not associated with greater injury or loss of stability. The duration of the mid journey lairage was not an important factor; the shorter lairage time, giving the calves sufficient time to receive milk replacer but little opportunity to rest, had no major detrimental effects on the variables used to assess welfare. Although there was little evidence that transport affected immunological variables, there was some evidence that it adversely affected the health of the calves post transport.