Environmental Control of Pigs
1 heat preservation
When 7~8kg piglets enter the nursery, the suitable ambient temperature should be maintained at 24.5 ℃, and the optimum ambient temperature at 20~25kg should be 23.0℃ ~ 24.5℃ (generally, the room temperature should be increased by about 2 ℃ ~ 3 ℃ after weaning).
2 to create good environmental conditions
Nursing pigs are susceptible to pathogen infection, so the house should be kept dry. The environment is clean and hygienic and the air is fresh. Use wooden boards or electric heating plates as mattresses to prevent piglets from getting cold in the abdomen and wearing out their feet and knees.
3 each pig has sufficient ground area
The feeding density in each column should not be too high, and the number of feeding heads should be determined according to the column area. Generally speaking, it is advisable not to exceed 25 heads per column to avoid stress.
(4) using reticulated ground
The use of external parasites is difficult to reproduce parasitic network ground (cast iron floor, etc.), while keeping dry, in order to reduce the infection of pathogenic microorganisms.
The height of 5 columns should be moderate
Prevent piglets from jumping in hurdles and install iron ring toys in the hurdles to reduce stress and avoid the occurrence of bitten fights, bulimia and other phenomena.
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Ensure that sheep drink enough warm water in winter and spring
Due to the low temperature in winter and spring, if you give sheep cold water, or even ice ballast water, sheep do not want to drink, it will cause insufficient drinking water for sheep. This not only slows down the process of sheep feed digestion, hinders metabolism in the body, and reduces body fat, but also causes various diseases. Therefore, it is necessary to create drinking conditions for sheep in production to ensure clean and adequate drinking water. Drinking water temperature if the temperature of the water consumed by the sheep is too low, the water should absorb the heat converted from the feed itself, which will reduce the utilization rate of the feed. Therefore, the best temperature for sheep to drink water in winter and spring is 20: 30.
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Causes and stress factors of porcine high fever
The cause of porcine high fever is essentially a pig disease caused by immunosuppressive pig disease, which is co-infected with a variety of viruses, bacteria and protozoa. Biological factors: mixed infection of classical swine fever virus, circovirus, blue ear virus, pseudorabies virus, eperythrozoon, toxoplasmosis, streptococcus, paratyphoid bacilli, mycoplasma, actinobacillus pleuropneumoniae, Haemophilus parasuis, pasteurella and so on. There are more than 15 kinds of pathogens, among which the infection rate of classical swine fever virus is the highest and the most typical, including Toxoplasma gondii and eperythrozoon.
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