The good grasp of dairy cows in the dry period is an important part of increasing dairy milk production. The lactating cow should be stopped lactating 2 months before calving, which is called dry period. Dry period is the most rapid stage of fetal growth, and it is also the most nutritional stage. Reasonable feeding and management can ensure good growth and development of the fetus. A timely dry period can lay a good material foundation for the next high lactation period. The length of the dry period depends on the specific condition of each cow, usually 45 to 75 days, with an average of 60 days. First, dry milk Second, dry milk late
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Dry cow milk refers to the period from the day of dry milk until lactation is completely stopped and the breasts return to normal. This is generally referred to as 30 days after dry milk. The aim of raising this period is to stop the cows from lactation as soon as possible and return the breasts to normal. The principle of feeding is to use green feeds and auxiliary materials (brewer's grains, bean curd residue, etc.) instead of green succulent feeds to meet the nutritional needs of cows, and to use roughage as the main ingredient, and maintain a moderate fiber intake with a certain amount of concentrate.
The late period of dry milk of cows, also known as the perinatal period, refers to the period from the complete stop of lactation of cows, the return of normal breasts to the stage of delivery. Generally refers to 30 to 40 days before calving. The diet is still dominated by roughage, with a certain amount of concentrate. In the 7 to 10 days before delivery, the appetite of the cow is reduced by 20% to 40% because of the rapid growth of the fetus and the uterus. Therefore, the nutritional level of the diet should be increased to ensure the nutritional needs of the cow. In the first 2 weeks before delivery, the amount of concentrate is gradually increased, and poorly-conditioned cattle are given better than body conditions. The general principle is that the dry period should be such that the daily gain of the cow should be between 500 and 700 grams, and the whole dry period should be 40 to 50 kilograms.