Dry dairy cows (or dry dairy cows) refer to cows that have passed from the stop of milking to the first 15 days of calving. The goal of this phase of the campaign is to ensure the development of the fetus, recovery of the sensation, and nutrient reserve. The body condition of dry cows should be maintained at a moderate level. Cows are over-fertilized and are prone to dystocia. Most of the post-partum appetite suffers from ketosis. Therefore, you should feed more hay within 10 days after stopping your milk, and then adjust the diet according to your body condition, breast expansion, and appetite. If the body condition of the cow is poor and the breasts are not inflated, the concentrate may be fed in an appropriate amount. If, on the other hand, the breasts are inflated, the concentrate may not be fed. The general dietary dry matter intake should be controlled at 2% of the body weight of the cow, and the amount of the concentrate should be 0.6% to 0.8% of body weight. The crude-to-coarse ratio is 35:65, and the general weight is 600 kg. The output of lactating cow dry milk is: 4 kg of concentrate, 20 kg of silage corn, and 5 kg of hay. In order to improve the health of dairy cows, diets should also be supplemented with minerals, vitamins and salt. It can be exercised for 2 to 3 hours a day, which is good for childbirth. It can also prevent postpartum placental infections, delirium, and limb and leg diseases.
Antibiotic refers to a class of secondary metabolites produced by microorganisms (including bacteria, fungi, actinomycetes) or higher animals and plants that have anti-pathogens or other activities in the life process and can interfere with the development of other living cells. Chemical material. Antibiotics commonly used in clinic are extracts from microbial culture fluids and chemically synthesized or semi-synthetic compounds. [1]
The antibacterial or bactericidal effect of antibiotics and other antibacterial agents is mainly aimed at killing the mechanism of "there is bacteria but not by humans (or other animals and plants)". It contains four major mechanisms of action, namely: inhibiting bacterial cell wall synthesis and enhancing bacterial cell membrane permeability Sex, interfere with bacterial protein synthesis and inhibit bacterial nucleic acid replication and transcription.
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