Dry dairy cows cleverly reared

The dry milk period of dairy cows refers to the period of time during which dairy cows stopped milk production before they monitored their production. After long-term lactation and fetal gestation, dairy cows consume many nutrients. Only by stopping lactation for a period of time can they be restored and compensated, so that the fetus can get a good growth and adequate rest of breast cells. This is the only way to ensure that the viability of breast cells is not compromised 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 When 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 milk according to the then fast dry milk law or gradually dry milk law. 1, fast dry milk method. The cows were suddenly stopped from milking and forced 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 output is still more than 10 kilograms on the date of the dry milk, a 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 dry milk process care 1, determine the date of dry milk. In the late lactation period, due to the reduction or disappearance of anti-inflammatory factors in milk, it is easy to cause inflammation of the breast. In this case, after the last milking, oil antibiotics or special dry milk should be injected into the breast. Oil antibiotics are prepared: Take 40 milliliters of edible peanut oil, heat and sterilize and cool, then 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 changes in the breast. Under normal circumstances, within 7-10 days after milking is stopped, the lactation function is basically stopped, and 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. Fourth, feeding requirements 1, to promote breast atrophy. When dry milk begins, there must be 3-7 days of concentrate and juicy feed control period to reduce lactation and promote breast atrophy. 2, lyrical recovery period. After the atrophy of the breast to 20 days before the expected date of delivery, dietary supplies should be given to the fetus and the cows recover their sensation. Generally, the full-price concentrate is supplied with 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-precision materials suitable for the period. From the 20th day before the due date, it is necessary to gradually increase the fine material, and it is usually appropriate to increase 350-500 grams per day (to avoid excessive growth, so as not to cause indigestion), and it is always added one week before the due date. Its purpose is to promote the development of mammary glands and adaptation to postpartum high-pregnancy feeds. 4, prenatal concentrates and high calcium material control period. After the above high-precision feeding, with the advent of the advent of the majority of cows around 7 days before delivery, the breasts of the majority of cattle have been fully swelled to prevent excessive swelling of the breasts. In this case, concentrates should be lowered. Normal medium-sized cows can supply 3-4 grams of concentrate each day. 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 health of cattle, Baote skin clean, wipe 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. China Agricultural Network Editor

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