The finishing pigs have certain adaptability to the ambient temperature of the pig house, but due to their special sebum characteristics, heat dissipation and the way to maintain body temperature are relatively simple and simple, the environment temperature of the pig house that is too high, too low, or alternating between hot and cold will cause production. Finishing pigs produce a variety of diseases such as respiratory syndrome, poor whiteness and other nutritional deficiencies, which seriously affect the performance of growing-finishing pigs.

Effects of Heat Stress in Summer on the Productivity of Growing-finishing Pigs. Heat stress has a more serious impact on the production of finishing pigs. Excessive temperatures can cause a decline in feed intake, slow weight gain, and even increase the incidence of acute sudden death syndrome in finishing pigs. Mortality increases, such as gastrointestinal bleeding, acute stomach The torsion and death caused by acute heart and lung diseases, etc., have caused huge losses in the production of finishing pigs. At the same time, too high temperatures can easily breed piggery bacteria and increase the incidence of fattening pigs. It has been reported that heat stress has a severe impact on the production of sows, and in particular causes the decline of ovarian function in sows, which is characterized by non-estrus in sows, decreased fertility rate in pregnancy, increased miscarriage rate, increased number of stillbirths and even miscarriage in late pregnancy. Heat stress often leads to a decrease of 1 to 2 sows' litter size and live births. Lactating sows have reduced feed intake, reduced sow lactation, insufficient milk, poor growth of suckling pigs, prone to yellow and white diarrhea, and other nutritional deficiencies, resulting in low rate of rearing piglets and low weaning weight. Boar libido weakened, ejaculation volume decreased, sperm motility decreased, and the ratio of live sperm to total sperm decreased.

The negative effect of low air temperature in piggery on the productivity of growing-finishing pigs. In the cold season, due to the low temperature, productive finishing pigs are prone to various respiratory diseases and intestinal digestive diseases because of their simple sebum and digestive respiratory system. Instability in air temperature, dry and wet conditions in the piggery, ventilation and other reasons can easily cause respiratory diseases in growing pigs. The main clinical manifestations are cough, wheezing and rapid breathing. Body temperature is generally not high, appetite is good or bad, and growth is retarded. Some acute respiratory diseases can cause it to die. In addition, too low temperatures can easily lead to diarrhea in pigs. The main manifestations are complex and diverse causes, long duration of disease, and varying severity of illness. This often results in the death of pigs and even piglets in batches. Pigs are quickly slaughtered to produce sows. Immediately shrinking (returning) milk, the harm is very serious and seriously affects the productivity of finishing pigs.

Finally, alternating hot and cold, sudden changes in temperature, and instability also affect the productivity of finishing pigs to a certain extent.

Aluminum Alloy Utility Knife

Aluminum Alloy Utility Knife,Zinc Alloy Utility Knife,Retractable Aluminium Utility Knife,Aluminium Alloy Artist Knife

Shangqiu City Huashang Zhiyuan Tools Co., Ltd. , https://www.hszytools.com