Prevention and control of swine lice disease
Porcine lice disease is an in vitro parasitic disease caused by pig liver lice parasitic in the coat of the body surface. Although it can not cause pig death, it has a considerable impact on the growth and development of pigs, especially on sub-pigs.
The development cycle of pig lice is short and spreads rapidly. after mating between male and female lice, the female louse absorbs enough blood and ovulates, laying 3-4 eggs a day. The eggs adhere to the pig coat and hatch for 12-15 days. The young lice become adult after 10-14 days, and the development cycle is 23-32 days. Piggery with poor hygiene, narrow site, dense and crowded, and poor management are most likely to be infected with this disease. Through breastfeeding, lice on sows can be transmitted to their offspring, and the disease of fattening pigs in the same circle can quickly spread to the whole herd. Clinically, sick pigs often tickle on walls and fences, resulting in body surface bleeding, mental unease, loss of appetite, malnutrition, weight loss, slow growth, especially stagnant growth and development of pigs, affecting production efficiency.
Prevention and control: spray pig body or medicine bath with 0.1% trichlorfon aqueous solution, 300 × 10-6 lindan solution, etc. The body surface of pigs should be checked frequently, especially for pigs purchased from other places, and once pig lice are found, they should be caught or killed with drugs. To do a good job in the environmental hygiene of pig houses, it is necessary to disinfect them regularly, and the feeding density should not be too high.
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Comprehensive prevention and treatment of heatstroke in cattle
Heat stroke in cattle is a common disease in summer and autumn, especially in service cattle and calves. If the prevention and treatment of heat stroke in cattle is not timely, it will often cause death or seriously affect the progress of farming, which should be paid great attention to. Etiology and symptoms heatstroke in cattle is the general name of solar radiation disease and heat radiation disease. In the hot season, the head of cattle is exposed to intense sunlight, resulting in cerebral and meningeal vascular congestion and substantial brain lesions, resulting in solar disease. The barn is narrow, low, muggy and poorly ventilated; the service is too heavy and the drinking water is insufficient; spent a long time in cement or
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Prevention of false pregnancy in sows
What is a fake pregnancy? Sows do not get pregnant after breeding, but their bellies get bigger day by day, and their breasts gradually expand. In the end, they can even squeeze out some clear milk, but they do not give birth, and their bellies and breasts gradually retract. This phenomenon is called false pregnancy. Causes of false pregnancy: first, due to early embryonic death and absorption, and the corpus luteum of pregnancy does not disappear, resulting in progesterone secretion, as if pregnancy is still continuing. Second, due to malnutrition, the endocrine disorder of sows is caused, and the estrous cycle of sows is delayed.
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