Ganovski Kh, Ivanov I G
Vet Med Nauki. 1982;19(7):95-9.
The application of dietetic and ethologic factors on three cow farms led to the improvement of the reproduction parameters. Basic dietetic factors were the correction of the energy--protein ratio, and the percent of the crude protein in the diet. In so far as the ethologic factors were concerned greatest attention was paid to the organization of work on the farms, the strict observance of the daily regime, and the principle of the herd hierarchy. The "independence period", i.e. the period between the time of calving and the time of the following first estrus dropped by 16, 8 and 10 days, respectively. The conception rate at first insemination rose by 25, 25 and 14.9 per cent, and the impregnation rate up to the 60th day--by 9, 13 and 3 per cent, respectively. Milk productivity increased by 1000 1 for the first two farms and by 300 1 for the third one. The number of calves obtained per 100 cows rose by 13, 14 and 2, respectively.
在三个奶牛场应用营养和行为学因素后，繁殖参数得到了改善。基本的营养因素包括能量 - 蛋白质比例的调整以及日粮中粗蛋白的百分比。就行为学因素而言，最大程度地关注了农场的工作组织、日常管理制度的严格遵守以及牛群等级制度的原则。“独立期”，即产犊至下次首次发情的间隔时间，分别缩短了16天、8天和10天。首次输精时的受胎率分别提高了25%、25%和14.9%，到第60天时的妊娠率分别提高了9%、13%和3%。前两个农场的牛奶产量增加了1000升，第三个农场增加了300升。每100头奶牛获得的犊牛数量分别增加了13头、14头和2头。
