The amount of cows fed depends on the weight of the cow and the amount of milk produced at each stage. In addition to supplying feed for maintaining nutrients, 0.35-0.4 kg of fine concentrate should be given for each kilogram of milk produced. At the same time, calcium and phosphorus and other minerals should also be added. The amount of material consumed per cow per day is 2-3.5% of body weight, about 15 kg. The amount of mixed concentrate is 5-10 kg. And master the feeding points according to different periods.
1, post-natal rehabilitation
That is about 2 to 3 weeks after delivery. This period should be based on the gradual increase in the basis of the milk and calcium, phosphorus, feeding more quality hay. Appropriate control of green juicy feed. Dry matter intake is about 2.5% of body weight.
2, lactation peak period
About 20-00 days after childbirth. This period is the golden stage of the whole lactation period, and its milk production accounts for about 40% of the total lactation yield. During this phase, the feeding amount should be gradually increased according to the increase of the appetite and milk production of the dairy cows, and the dry matter intake should be 3 to 3.5%, sometimes up to 4%. Concentrate digestible crude protein content should be higher than the calculated amount of 10-15%.
3, during and after lactation
100-200 days postpartum is the mid-lactating period, and 200 days later is dry milk to the late lactation period. The two phases of feeding should be based on the principle of "multiple production and more feeding, less production and less feeding" and "dairy scheduling" to avoid blind feeding and feeding.
4, dry period
Care should be taken to maintain the nutritional level and not be over-fat. The amount of feeding can be given according to the following conditions: The first month of dry milk is equivalent to 2-5 kilograms of milk production, and the second month of dry milk is equivalent to 5-9 kilograms of milk production. Dry milk heavy fetus can be calculated as 2-2.5% of body weight. Per kg of dry matter should be about 12% of crude protein, crude fiber more than 20%. More quality hay, but also should be added calcium, phosphorus and other minerals.
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