Barber D M
Vet Rec. 1979 Apr 28;104(17):385-6. doi: 10.1136/vr.104.17.385.
The feeding of colostrum to newborn calves from a bucket was found to be more effective in ensuring immune globulin uptake than leaving cow and calf together for two days post partum. A marked seasonal variation in the immune globulin status of calves, which could not readily be explained by management factors, was noted during two consecutive seasons.
研究发现,用桶给新生小牛喂初乳,在确保小牛摄取免疫球蛋白方面比产后让母牛和小牛在一起待两天更有效。在连续两个季节中,观察到小牛的免疫球蛋白状况存在明显的季节性变化,而管理因素难以对此做出合理解释。