To purchase high-yielding dairy cows and ensure their health, we must first purchase them from high-reputation dairy farms. The purchasers must have experience in identifying high-yielding dairy cows from their appearance, pedigree and age, understand the local feed and breeding conditions, and apply for veterinary health certificates. . First, choose the introduction location. To purchase dairy cows, dairy cows must be purchased on large breeder cattle farms with good reputation or familiarity, because these breeding units are licensed by state authorities and have detailed production records and a good production base. It can provide perfect after-sales service, and its milk cow breed has good quality, high milk production performance, strong adaptability, and few epidemics. Do not rely on the high yields, low prices, dairy product closures, and mass sale of dairy cows in the local dairy cows' information to avoid being deceived. Second, the purchase season is appropriate. Buy cows should not be in the hot summer, nor in the cold winter. These two seasons are infectious seasons and are not conducive to safe transportation. The transportation season was the best in October and November, and the climate was cooler. Third, body appearance choice. Do a good job of appearance selection, requiring a sturdy body, well-proportioned structure, long body width and depth, to do eight things when shopping: look at the head: head and neck long and handsome, beautiful outline, clearly showing the subtle; nose wide, Eyes uplift. Second, look at the neck: The neck is long and thin, and it is well combined with the head and shoulders. There are countless tiny folds on both sides. Three to see the chest: chest wide and deep, ribs curved round. Four to see the back waist: back long, wide and straight, good connection with the waist, waist should be straight. Five to see the abdomen: the middle body should develop well, the abdomen is thick, wide and deep, showing a barrel shape, not sagging. Six to see limbs: strong limbs, correct, no internal arc or outside the arc phenomenon. Medium hooves and no cracks on the hoof. Seven look hair color quilt. Black and white flowers, large, black and white boundaries. The coat is soft, dense and shiny, and the skin is easy to pull up and the sebum is excreted. Eight look at the breast: The breast is the most important part of the cow. The udder should be large and square, extending forward and backward, the bottom is horizontal, and the shading is slightly higher than that of the hock. Mammary glands develop well, the nipples are of moderate size, well-distributed, the milk veins are thick and curved, and the milk wells are large and deep. Fourth, select age-appropriate dairy cows. The introduction of yaks requires the least amount of expenses and has the potential to obtain high-yielding dairy cows, but it takes a long time to achieve income from milk production. Adult cows can be milked immediately after purchase and have economic returns, but the cost is high. Dairy cows generally reach the peak of milk production at the 5th child, and then gradually decrease their milk production as they age. Therefore, the new dairy herds should be selected at the age of 2 years and have been matched with the species. The gestational age is 6 months. Within the cattle (smaller gestational age, can avoid miscarriage caused by transport). After a few months of feeding, the cows will be able to give birth, and they will get one more calf, a longer life span for the cows, and the opportunity to obtain high-yield dairy cows. How to correctly judge the age of cattle is a problem for cattle buyers to understand. One is to determine the age of the first record; the second is no record available, please experience the appraisers through the cow incisor teeth change law identification and angle round method combined with age identification. When the cows exchange a pair of incisors, they are 1.5 to 2 years old, and when they change two pairs, they are 1.5 to 3 years old. Fifth, carefully check the file. When you purchase dairy cows, ask for and consult the dairy cows' files. Good breeds have regular archives. When checking, you should pay attention to the second look: a look at the existence of the file, and the authenticity of the file. Second, see if the record is complete. Including pedigree, date of birth, growth and development, feed consumption, health status, breeding calving status, etc., through the file can understand the quality of the purchased cows. Sixth, measuring milk performance. Dairy cows are breeding animals with a relatively large single investment. To reduce the risk of investment, the purchase of dairy cows and the actual inspection are the most certain. High-quality, high-yielding dairy cows generally have pedigree records. The performance of the dairy cow can be estimated by the performance of its parents, ancestors, and sisters in the pedigree. Seven, choose healthy cows. When purchasing dairy cows, first of all, the quarantine of epidemic diseases such as foot-and-mouth disease, bovine tuberculosis, brucellosis, bovine pulmonary plague, and mastitis should be quarantined; in particular, dairy cows' tuberculosis and brucellosis are two serious hazards. Human health and zoonotic diseases, we adopt a strict elimination system for cows suffering from these two diseases, and treat the positive cows as harmless. However, some cattle farms have found that positive cattle are not rush-out measures but are eager to sell. Therefore, on-site monitoring must be carried out at the time of purchase. Tuberculosis allergy test equipment can be used for the determination of bovine tuberculosis. For brucellosis, serum plate agglutination test can be used. When there are a large number of purchases, the local veterinary quarantine department may be entrusted with testing, and dairy cows with positive monitoring results must not be purchased. Before cattle are shipped, they need to urge the seller to report to local quarantine agencies for inspection, go through the relevant quarantine procedures and obtain quarantine certificates. Eight, safe transportation after purchase. It is best to transport dairy cows with special cattle carts. If there are no cattle carts, trucks can be added with guard rails. The number of cows loaded on the truck should not be too much, and high quality green hay and protein feeds should be fed on the way, and 3 should be provided with enough water every day. In order to prevent the occurrence of cows during transportation, some antibiotics such as oxytetracycline, quinoline, etc. may be added to the feed; in order to reduce the emergency response on the way, some antibiotics such as potassium chloride and vitamins may also be added to the feed. Rushan Jinguo Food Co., Ltd , https://www.jinguofood.cn