Dry milk cow feeding management technology

Dairy cows dry milk period refers to the period of time before cows stop lactating. After long-term lactation and foetal gestation, cows consume many nutrients in the body. For this reason, it is only after a period of time to stop lactation that it can be restored and remedied, so that the fetus can get good growth and adequate rest of the mammary cells. The only way to ensure the viability of breast cells during the next lactation period
First, the length of dry milk period The length of the dry milk period can be due to the cow's age, sensation, milk production and a certain degree of flexibility, generally 50-70 days. Dry milk period is too long to affect the milk production during lactation, and it causes the cattle body fat to cause certain diseases. When the dry period is too short, the cattle body will not be adequately rested and adjusted, which will not only affect its health status, but also affect the milk production during the next lactation period. Under normal circumstances, high-yielding cattle, old-age cattle, and weak-bred cattle can be appropriately extended to 70-75 days, while cattle with good nymphs and lower milk production can be shortened to about 45-50 days. Tests have shown that cows without dry milk have a 25% drop in milk production during the next lactation period and a 38% drop in the next period compared to 60 days for dry cows.
Second, the dry milk method Dry milk, with the control of the use of fine material and green juicy feed and drinking water supply under the premise of the implementation of the milk during the period of rapid dry milk or gradually dry milk law.
1. The fast dry milk method suddenly stops the cows from milking and forces them to dry their milk back. This method is applicable to individuals who have a long milk production date, have a very low milk supply per day, and do not have a clear milk reflection during milking.
2. Gradually dry milk method For dairy cows whose milk production is still more than 10 kilograms on the date of dry milk, gradual dry milk method should be adopted. In addition to controlling the supply of concentrates and succulent feeds and drinking water, this method also needs to disturb the original milking rules and reduce the number of milkings so as to destroy the milk reflections formed during normal milking. Dry milk can generally be completed in 3-5 days.
Third, the nursing of dry milk process
1, determine the dry milk date Late lactation due to the reduction or disappearance of anti-inflammatory factors in milk can easily lead to inflammation of the breast, this should be the last milking, inject oil into the breast antibiotics or special dry milk. Oil antibiotic preparation: Take 40 milliliters of edible peanut oil. After sterilization and cooling with heat, stir 3.2 million units of penicillin and 2 million units of streptomycin, and inject 10 milliliters into each milk area from the nipple hole.
2. Observe normal changes in the breast. Within 7-10 days after milking is stopped, the lactation function is basically stopped. A small amount of breast milk remaining in the breast is gradually absorbed and the breast gradually shrinks. Most cows first shrink from the base of the breast, so often see the emptiness of the breast base relaxation, and then the entire breast atrophy. When a week or so after dry milk, the breasts not only do not shrink but become swollen and red, and they cause attention when palpation has pain reaction. If necessary, re-extrude the accumulated milk and promptly treat the inflammation.
IV. Breeding requirements
1. To promote dry milk during the period of breast atrophy, there must be a 3-7 days control period for concentrates and succulent feed to reduce lactation and promote breast atrophy.
2. During the recovery period of the lyrics, after the breast shrinks to the 20 days before the due date, the dietary supply of the fetus and the recovery of the cow's sensation should be given. Generally, the full-price fine material is supplied 1.5-2.0 kg per day. The actual production can be flexibly adjusted according to the cattle's lyrical condition and the advantages of roughage. In addition, the mineral supply at this stage needs to meet the rapid development of the fetus. Taking bone meal as an example, it is advisable to supplement 120-160 grams per day.
3, high concentration of material to adapt to the period from the pre-production period of 20 days, to gradually increase the fine material, often 350-500 grams per day is appropriate (to avoid excessive growth, so as not to cause indigestion), has been added to the expected one week before the delivery period. Its purpose is to promote the development of mammary glands and adaptation to postpartum high-pregnancy feeds.
4. During the control period of prenatal concentrates and high-calcium materials, after the above-mentioned high-precision feeding, with the arrival of the adventurous period, the breasts of most cows have been fully swelled long before 7 days before delivery to avoid excessive breast swelling. At this time, the concentrate should be lowered. While reducing the supply of concentrates, it is even more important to substantially reduce or completely stop the supply of calcium-containing feed in order to avoid the occurrence of paralysis after delivery. The control of calcium-containing material is a particular concern in dairy farming.
V. Management Requirements During the dry period, in addition to the precautions for feeding, the management of this period should also be strengthened. The focus of the whole period is on miscarriage and prevention of abortion. The pregnant cow must be separated from the bull and must be separated from the large herd of dairy cows to feed the frosty mildew feed. The winter drinking water should not be lower than 10-12°C. In a hot and humid summer, the cows should be placed in a cool, ventilated environment and can be raised if necessary. Dietary nutrient concentration. To strengthen the barn hygiene, Baote skin clean, wipe it twice a day. For a period of 10 days after dry milk, breast massage should be performed twice a day to promote breast development. Also pay attention to proper exercise, so as to avoid excessive body fat caused by bovine fat and constipation, etc., in addition, dry dairy varieties should not be mutated, so as not to affect the normal milk intake of dry dairy cows.

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