There are many varieties of chicken. What kind of breed is good to raise?
Chicken breeds are divided into standard breeds, commercial breeds and local breeds. At present, commercial varieties are commonly raised, and standard varieties such as Bailaihang and Luodaohong are no longer used as breeding materials in commercial breeding. Commercial chicken breeds are selected by breeding companies and named by breeding companies, such as Roman Brown, Highland White and so on. Modern commercial breeds are characterized by specialization of breeds, high production performance, and most commercial chickens are hybrid chickens. Modern commercial breeds mainly come from a few standard breeds, such as Bailaihang, Luodaohong, Bailock, etc., but the names of standard breeds are no longer important to @ # @ 230 chicken breeders, so chicken breeders are familiar with the commercial names of chickens and no longer consider their standard names.
Local breeds have their own characteristics, and China is rich in local breed resources. Chinese Poultry breeds published in 1989 included 27 local chicken breeds in China. These local chicken breeds have their own characteristics and are very valuable genetic resources. Yellow-feathered broilers which have developed rapidly in recent years have made full use of the good meat quality of local chicken breeds in China.
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Comprehensive prevention of two kinds of multiple diseases in pigs in summer
The main results are as follows: 1. piglet coccidiosis mostly occurs in late spring and early summer, mainly in suckling pigs of 15 days old. Drug prevention and treatment 1. Baiqiuqing: piglets were fed with Baiqiuqing once at the age of 3-6 days, with a dosage of 20 mg per kilogram of body weight. 2. Sulfonamides: the therapeutic dose of sulfadimethoxine is 20ml / kg body weight, once a day for 3 days. Second, Streptococcus suis disease: it often occurs in the warm season from May to November and is a zoonotic disease. Prevention per ton of feed
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Treatment of Porcine urinary Lithiasis
Etiology: urolithiasis, also known as urolithiasis or urethral calculi, is a coagulation of salt crystals in the urinary tract, resulting in mucosal irritation, bleeding, inflammation, urethral obstruction, dysuria and abdominal pain. Urolithiasis originates from the kidney or bladder, while obstruction can occur in the ureter and urethra. The disease is closely related to the quantity and quality of feed and drinking water, the metabolism of minerals in the body, and the functional activities of urinary organs, especially the kidney. Symptoms: if the volume of urinary stone is small and the number is small, it generally does not show any symptoms. The main manifestations of severe patients are ranked.
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