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首页> 外文期刊>The Bovine Practitioner >Effect of an Immunostimulant Administered at or Near Weaning on Weight Gain and Health of Beef Calves
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Effect of an Immunostimulant Administered at or Near Weaning on Weight Gain and Health of Beef Calves

机译：断奶时或断奶前后服用免疫刺激剂对小牛体重增加和健康的影响

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摘要

Weaning is generally regarded as a very stressful event in the life of calves, and is often associated with an increase in morbidity and reduced weight gain. Various management strategies are employed in an effort to reduce the impact of weaning on calf health and productivity. This study examined the effects of a nonspecific immune stimulant, mycobacterial cell wall (MCW), administered at or near weaning on the subsequent morbidity and growth of beef calves. Heifer calves (n = 137) were administeredeither MCW or saline two weeks prior to weaning, while steer calves (n = 60) were administered either MCW or saline on the day of weaning. Calves were monitored for 120 days. There were no observed differences between treatment groups in either weight gain or number of disease events. Under the conditions of this trial, administration of MCW at or near weaning did not have a significant effect on calf health or weight gain.
机译：断奶通常被认为是犊牛一生中非常紧张的事件，通常与发病率增加和体重增加减少有关。为了减少断奶对犊牛健康和生产力的影响，采用了各种管理策略。这项研究检查了断奶时或断奶后施用的非特异性免疫刺激剂分枝杆菌细胞壁（MCW）对牛肉犊的发病率和生长的影响。在断奶前两周，对小母牛（n = 137）进行MCW或生理盐水给药，而在断奶当天对小牛（n = 60）进行MCW或生理盐水给药。监测小牛120天。治疗组之间在体重增加或疾病事件数量上均未观察到差异。在该试验的条件下，断奶时或断奶前后施用MCW对小牛的健康或体重增加没有显着影响。

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