Zinc deficiency in chickens
Similar symptoms: hypertrophy of tarsal joint, thick and short legs and feet. (similar to colibacillosis, staphylococcosis, synovial cystic mycoplasmosis, vitamin B6 deficiency, vitamin B2 deficiency, joint gout, vitamin B11 (folic acid) deficiency, choline deficiency, manganese deficiency, vitamin PP (nicotinic acid) deficiency, zinc deficiency)
Differential symptoms: light feet and legs have scaly skin, severe skin keratosis of legs and feet, and cracks in the soles of feet. There is a serious defect at the end of the feather, especially in the wing feather and tail.
Treatment: add 10 grams of zinc sulfate 5-Mel per 50 kg feed, and increase the dosage of VE for adjuvant treatment.
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Effect of airflow on pigs
The motion of air molecules is called air flow, and the air flow that moves horizontally is called wind. The air flow in the atmosphere is caused by the uneven temperature distribution on the earth's surface, and the air molecules flow from the region of low temperature and high pressure to the region of high temperature and low pressure. In weather, the wind speed and direction are often described. The wind speed is the distance of the wind movement per unit time (m); the wind direction is the direction of the wind, expressed in 8 or 16 directions, and the wind direction frequency chart (wind direction rose chart) is drawn according to the probability of the wind appearing in each direction. Wind direction frequency diagram
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Post-weaning multisystemic wasting syndrome 2
(4) the prevention and control of PCV2 has strong resistance to the inactivation of many detergents and disinfectants, and the effect of drug application is limited, so it is very important for pig farms to change feeding techniques, improve sanitary conditions and reduce stress in different periods in order to reduce "infection pressure" (including PCV2 and any other pathogens). 4.1 during parturition 4.1.1 all in and out, thoroughly wash and disinfect between two batches of pigs 4.1.2 wash sows and deworming before delivery
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