奶牛的生长速度：体重的宫外生长。
THE RATE OF GROWTH OF THE DAIRY COW : EXTRAUTERINE GROWTH IN WEIGHT.
机构信息
Department of Dairy Husbandry, University of Missouri Agricultural Experiment Station, Columbia.
出版信息
J Gen Physiol. 1921 May 20;3(5):623-33. doi: 10.1085/jgp.3.5.623.
The growth period of the Jersey and Holstein cows is made up of at least three cycles, two extrauterine cycles with maxima at about 5 and 20 months of age, and one intrauterine cycle, the maximum of which has not yet been determined. The equation of an autocatalytic monomolecular reaction was found to give very good results when applied to the cycle having its maximum at about 5 months of age. The values obtained from this equation when applied to the cycle having the maximum at about 20 months of age were higher than the observed values probably due to the retarding effect of pregnancy and lactation on growth.
泽西牛和荷斯坦牛的生长期由至少三个周期组成，两个宫外周期，最大年龄分别约为 5 个月和 20 个月，一个宫内周期，其最大值尚未确定。发现当应用于最大年龄约为 5 个月的周期时，自催化单分子反应的方程给出了非常好的结果。当将该方程应用于最大年龄约为 20 个月的周期时，得到的值高于观察值，这可能是由于妊娠和哺乳对生长的抑制作用。
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