High-produce milk dry milk technical points
Dry milk is the process by which dairy cows stop producing milk before giving birth. Low-yielding dairy cows often stop on their own before giving birth, and high-yielding dairy cows often have higher milk production at this time. High-producing dairy cows must perform artificial dry milk before labor to allow them to rest for a period of time before birth to ensure the normal growth of the fetus and the reorganization of the breast tissue. At the same time, the cows can accumulate nutrients in the body and restore their constitution to reduce the postpartum period. The occurrence of metabolic diseases lays the foundation for the next high lactation period. However, in actual production, some cattle farmers have improper methods of dry milk and often cause breast disease or the phenomenon of bulging breasts. The light affects the production potential of dairy cows, and the heavy ones cause high-yielding dairy cows to be eliminated in advance, causing losses to cattle farmers. . Here are the technical highlights of the high-yielding dairy dry cows: 1. Determine the dry milk time The dry milk time depends on the cow's expected date and dry milk duration. Dairy cows generally have a dry period of 50 to 75 days. Early mating cows, emaciated cows, older cows, high-yielding cows, cows that are difficult to stop milk, and cows that are not well stocked can dry. Appropriately longer, 60 to 75 days, and the cows with better nymphs and lower milk production can be shortened to 45-50 days. However, the shortest cow dry period can not be less than 42d, otherwise it will affect the milk production of the next baby and the health of the cow. 2 Adjust the feeding plan in advance. Adjust the cow feeding program from the 1st week of stopping milk, and change the free drinking water to regular quantitative drinking water. In the distance of 3 d, the feeding program was adjusted again according to the milk production of the cows. At this time, if the cow's milk production is still very high, all fines should be subtracted. If the milk production is not very high, but the daily milk is still above 10kg, some of the concentrates may be properly deducted. The milk production on that day is lower than 1kg. When you do, you can no longer adjust the amount of concentrate, but you need to properly limit the amount of drinking water for the cow. 3 Adjusting management measures While feeding the juicing material, the number of milking can be changed from the original 3 times daily to 2 times daily, and then continue to adjust according to the decline in milk production. When milk production dropped below 10kg on the same day, it could be changed to milking once a day. At the same time, the daily cow exercise time can be appropriately increased to increase consumption and exercise constitution. In addition, it can also cooperate with changing the milking time, changing the milking place, changing the feeding times, reducing the breast massage and other measures, causing unpleasant stimulation to the cow and destroying the milk reflection formed in the normal milking process. 4 After squeezing the last heavy milk, close the nipples on the day of reaching the dry milk, scrub the breasts, massage carefully, thoroughly squeeze the milk in the breasts, then soak the nipples with 1% iodophor, and then into each nipple Inject dry cream or other dry milk needles, respectively. After the injection, soak the nipples with 1% iodophor. 5 Observe changes in the breast When the above operations are completed, the changes in the cow's breast must be carefully observed. Under normal circumstances, the breasts are significantly inflated in the first 2 to 3 days, and the accumulated milk is gradually absorbed after 3 to 5 days. The breast volume is significantly reduced in 7 to 10 days. The internal tissues of the breast become soft. At this time, the cow has stopped lactation and has stopped milking successfully. 6 Precautions 6.1 Keeping the Breasts Clean During the process of dry milk, the cows are full of breasts and even become slightly inflamed and swollen. At this time, they are susceptible to infections. Special attention should be paid to keeping the breast clean and hygienic. Keep the barn clean and dry, and change the bedding to prevent the cow from lying on the dirt and excrement. 6.2 Observing the reaction of cows During the process of dry milk, most cows did not have adverse reactions, but there were also a few cows with fever, irritability, loss of appetite and other stress responses. They must be discovered in time and dealt with promptly to prevent secondary diseases. For severely reacting cows, intramuscular injections of sedatives and symptomatic treatment with broad-spectrum antibiotics are available. 6.3 Prevention of breast damage During dry milk, if there is severe swelling of the breast, redness of the breast surface, fever of the cow, fever of the breast, etc., if you do not insist on milking, the breast will swell. In this case, dry milk should be suspended, milk from the breasts should be squeezed out, and the breasts should be treated with anti-inflammatory treatment and massage. After the inflammation disappears, dry the milk again. 6.4 Strengthen management and distribution of large herds of dairy cows, prohibit massages, collisions, and touch the breasts, maintain a good breeding environment, keep the cowhouse air fresh, prevent heat in the summer, prevent cold in the winter, and refrain from feeding frosty mildew feed. The winter drinking water should not be lower than 12°C. To prevent cows from becoming ill, causing dry milk failure or cow abortion.