Precise weight loss suckling method is provided in order to minimize the stress of weaning newborn calf. After you have large amounts of salary up to 15-25% of body weight depending on the individual by the body weight of the calves over a 3 to 5 weeks old, this method will be reduced to 8-15% of body weight 3-7 days before weaning, and characterized in that it was reduced stepwise mammals amount is supplemented with water, adjusting the milk allowances in accordance with the Individual body weight 8-15% of body weight to 6 to 8 weeks from 5 weeks the weight loss amount. Thus, using a mounting device mammals, after weaning before, was (15-25% of body weight) 25 to 35 days, a large amount in the initial salary, (8-15% of body weight) 10 to 20 days weight loss mammals to late By providing a precise weight loss suckling method of inducing the weaning stress minimization chow and maximum uptake by the precise suckling method of the new concept to be, and complete freedom mammals and mammals how to mammals in an amount corresponding to 10% of the body weight of the existing I showed the result that is different from the report that there is no difference in the weight change of the age 200 days or 180 days of age between the way. In addition, compared to the practice method, solid feed intake of up to 50 days of age is weaning date is increased by 31% or more in dry feed amount, this step-down suckling method, 16 the total dry feed weight of up to 120 days of age % shows the result of the above improvement, there was a large improvement in pre-weaning solid feed intake capacity. Further, according to the present invention, the weight gain was effective to improve more than 75% compared to the practice mammals district until 50 days of age the weaning day, was increased 54% or more total weight gain of up to 120 days of age .新生子牛の離乳ストレスを最小化するために精密減量哺乳方法が提供される。この方法は、生後3~5週間に亘って子牛の個体別体重に応じて体重の15~25%まで多量給与した後、離乳前3~7日間体重の8~15%に減量するが、その減量分は水で補充して段階的哺乳量を減量し、5週から6~8週間まで体重の8~15%に
