饲养对芬兰奶牛繁殖性能的影响。
Effect of feeding on reproductive performance in Finnish dairy cows.
作者信息
Miettinen P V
机构信息
Department of Anatomy, University of Kuopio, Finland.
出版信息
Acta Vet Scand. 1990;31(4):453-8. doi: 10.1186/BF03547528.
The effect of 2 types of feeding on the involution of the genital tract and on the fertility was studied in 79 Finnish dairy cows on a research farm. The cows were fed twice a day with home-produced feed in accordance with the Finnish feeding standard. The cows were divided according to the type of feed into a hay-urea group and a silage group. The cows were examined clinically by rectal palpation 3 times a week during 8 weeks postpartum. The time required for the complete involution of uterus and cervix was recorded. The cows in the silage group had a significantly longer time in uterine involution, a lower fertility rate at first insemination and a longer interval from calving to conception than those in the hay-urea group. The pregnancy rate in the first insemination was in the hay-urea group 91% and in the silage group 57%. The interval between calving and the first insemination was shorter in the hay-urea group than in the silage group: 71.4 +/- 10.6 and 74.0 +/- 10.3 days, respectively. The interval between calving and conception was in the hay-urea group significantly (p less than 0.01) shorter than in the silage group; 74.8 +/- 15.1 and 89.5 +/- 24.4 days, respectively.
在一个研究农场，对79头芬兰奶牛研究了两种饲养方式对生殖道 involution 及繁殖力的影响。这些奶牛按照芬兰饲养标准，每天喂两次自产饲料。根据饲料类型，奶牛被分为干草-尿素组和青贮组。产后8周内，每周通过直肠触诊对奶牛进行3次临床检查，记录子宫和宫颈完全 involution 所需时间。青贮组奶牛子宫 involution 所需时间显著更长，首次输精时的繁殖率更低，从产犊到受孕的间隔时间比干草-尿素组更长。干草-尿素组首次输精时的妊娠率为91%，青贮组为57%。干草-尿素组产犊至首次输精的间隔时间比青贮组短：分别为71.4±10.6天和74.0±10.3天。干草-尿素组产犊至受孕的间隔时间显著（p＜0.01）短于青贮组；分别为74.8±15.1天和89.5±24.4天。 （注：“involution”未查到准确释义，推测可能是“复旧”之类的意思，你可根据实际情况调整。）
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