Mother and newborn calf welfare in the perinatal period: an evaluation focusing on their helth

我们回顾了有关新生牛犊死亡率的文献，并在《动物科学杂志》上讨论了它对生产力的影响。我们调查了母牛在分娩前和分娩后的压力水平与其后代出生后不久的压力水平的关系。结果表明，应激不是通过初乳而是通过胎盘从母牛传递给新生的小牛。我们测定了产犊圈和品种中每窝木屑的数量对抗体被动转移失败(FPT)的影响。结果表明，增加木屑用量对黑白花奶牛有较好的预防效果，且与日本黑牛品种差异较大。

We presented a review of the literature on newborn calf mortality and discusses its productivity implications in the Animal Science Journal.We investigated the relationship of the stress levels of the dam before and after delivery to that of her offspring soon after birth. The results indicated stress is transferred from a cow to her newborn calf not by way of the colostrum but through the placenta.We determined the effects of the amount of sawdust as a litter in the calving pen and breed on failure of passive transfer (FPT) of antibodies. The results indicated prevention effect of increase in the amount of sawdust on the FPT and difference between the breeds of Holstein and Japanese Black cattle.