1, look at the fur: experienced people know that buying a cow'' buy a skin on top and four hooves on the bottom''. Whether a cow is sick or not can be seen from its fur. Dry skin and burnt hair, spear hair and spear stab are all manifestations of malnutrition. Most of these cows are sick.

2, look at the legs: first of all, let's see if the limbs are thick and the four legs are thick. This kind of cow is stronger, with good physique and strong disease resistance. When it grows up, the calf will be better.

3. Look at the waist: First of all, look at the length of the waist. "The waist is wide and long, and it is good to keep melon seeds." Then, it depends on whether there is an axe with a concave back arch. Such cattle are not suitable for basic cattle.

4, look at the mouth: first of all, look at whether there are blisters and rotten spots on the oral mucosa. Anything that bubbles on the oral mucosa is basically not a good disease, such as foot-and-mouth disease, malignant catarrhal fever, infectious stomatitis and so on. These diseases blister the oral mucosa.

5, look at milk: "milk hair, milk-based, big nipples, calves are also good", for heifers, it depends on the size of nipples, nipples are small and pointed and not suitable for breeding cattle.

6, look at the eyelids: when buying cattle, you must open your eyelids to see the conjunctiva, conjunctiva flushing, congestion, more fever, conjunctiva pale, anemia symptoms, more parasitic diseases.

7. Look at the ass, which means "a big head and a sharp ass can eat no long meat: little ass's head is round, but long meat is not greedy". A good beef cattle should have a "square, wide, round and long" hip.

Extended data

1, dairy farming management

(1) Through scientific nutrition collocation and feeding management of cows in different periods, the survival rate of calves at the age of 6 months can reach more than 95%, and attention should be paid to improving body volume, promoting rumen function, improving survival rate, colostrum feeding, high-quality forage supply and fine management. The goal of breeding cattle is to grow and reproduce. In the middle stage of concentrate and roughage, it not only ensures nutrient supply, but also saves feed.

(2) 18 months old, after weighing 350kg, prepare for breeding. Before and after cow production, breeders pay attention to the supply of nutrients to improve the conception rate. Perinatal cows should be raised independently and managed throughout the whole process to prevent postpartum diseases and ensure the health of cows.

2. Supplementary feeding technology

Because roughage protein and energy supply are less, cattle should pay attention to supplement concentrate in time during growth to ensure healthy growth and balanced nutrition. 60 days before the production of basic cows, concentrate 1.0 ~ 1.5 kg was supplemented every day; Supplementing concentrate 1.5~2.5kg every day after delivery120 days is convenient for dairy cows to produce milk and improve the conception rate of mating. The main components of concentrated feed are: corn, soybean meal and bran; Among them, corn 53%, soybean meal 20%, bran 25%, stone powder 1%, salt 1%. In winter, farmers with less green feed pay attention to the supply of vitamin A.

3, mechanical equipment management

Feed processing usually needs the help of related mechanical equipment, such as shed and straw. Breeders should combine specific environmental requirements, adhere to the applicability requirements, keep warm in winter circles, and avoid calves from freezing. Mechanical equipment can be used by several farmers.

4. Cattle management technology

Take the form of grazing in groups, such as calves, mature cows and pregnant cows. At the same time, make a grazing plan according to the grassland situation to ensure that each cow has enough forage. Once sick cows and weak cows appear, they should be treated as soon as possible to save the economic investment in nutrition management and improve the reproductive ability of dairy cows.

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