One bogey to prematurely breed. Many yak calves are not 18 months old after birth. When they weigh about 250 kg, they are urgently bred. They often cause dystocia in first birth, rupture of the vagina, severe secondary endometritis, affecting future reproduction. Fertility. Therefore, the cattle-raising household must not be eager to achieve success, and must be able to breed when the cow is completely mature and has a body weight of 350-400 kg.

Second bogey over milking. Dairy cows generally have a lactation period of 305 days, but due to factors such as age, parity, sensation, and feeding level, sometimes the lactation period is prolonged or shortened. Some cattle farmers stopped milking from the time they had been squeezed until they had no milk, causing dairy cows to over-consume nutrients. This led to problems such as inexplicable estrus, sexual cycle disturbances, and difficulty in getting pregnant and affecting the increase in lactation. Therefore, when milking during lactation, the cow should be given enough time to make up for the loss of nutrients. Generally, milking should be stopped about one month before weaning, laying the foundation for seizing the higher milk production of the next baby.

Three bogey milk cuts. Dairy cows produce lactation through lactation, and the loss of nutrients in the body, coupled with pregnancy, and the need for nutrient development during embryonic development, must be restored during dry period. Many dairy farmers believe that they should feed poorly when they are not milking, and drastically reduce the feeding of concentrates, causing a serious decline in the condition of calves in laboring cows, prolonged calving process, weak physique of yak, and poor yield of poor milk production. Therefore, in addition to just a few days after the milk and just a few days before the onset of milk production, the cows can appropriately reduce the feed amount of the concentrates. The dried milk must be supplied with sufficient concentrate. Generally, the daily feed should be 0.8% of the weight of the cows.

Four avoid bovine body brush. Dairy cow skin metabolism is obvious, sensitive to dust outside. When the coat is accompanied by dry faeces or parasites, the cows will feel uncomfortable. Common tongue licks or phlegm will be used to remove itch, affect sleep and consume unnecessary nutrients. Therefore, we should always keep the cattle body clean and sanitary, do a good job of prevention and treatment of parasites, and insist on brushing once daily with a brush, comb.

The five bogey are piled up. Many dairy cows are accustomed to raising cows with ropes and necks, which limits the activities of dairy cows and causes adverse effects such as difficult labor for dairy cows, unreliable placenta, estrus lag, poor body condition and slow development of calves. For this reason, dairy cows usually have to ensure that they have not less than 2 hours of outdoor activities each day. In addition, calves should allow them to move freely within calves. This will effectively promote metabolism, increase appetite, and ensure normality. Breeding, improve disease resistance.

Six bogey does not speak about health. Many dairy cows believe that cows have strong disease resistance, and they do not pay attention to environmental disinfection and hygiene of feed water during breeding, which often leads to the death of dairy cows. Every winter and spring must use quicklime and Lysol to sterilize the cowshed and the surrounding environment once a week. Summer and autumn are to be disinfected twice a week, and feed and drinking water should be sanitized, and no mildew feed should be provided.

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