Taoyuan Chicken, a Local Chicken breed
Main germplasm characteristics: Taoyuan chicken is a local meat chicken breed, which is famous for its tall size, delicate meat, delicious meat, good meat production performance and so on.
Body shape and appearance: Taoyuan chicken is tall, sturdy, fluffy, slightly longer and rectangular. The rooster has a majestic posture, high head and neck, cocked tail feathers and a V-shaped side view. The hen is slightly taller, the back is long and straight, and the hindquarters are deeply round and nearly square. The head of the rooster is moderate in size, the single crown is upright, the hen's head is beautiful, and the crown is large and inverted to one side. The ear leaves and meat lobes are well developed and bright red. The tail feather grows later, and the tail is semicircular bergamot when it is not full-length, and the tail feather is warped up after it is full-length. The body feathers of the rooster are golden or red, the main wing feathers and tail feathers are black, and the comb feathers are golden or with black spots. The feather color of the hen is yellow or sesame. The beak and shin are bluish gray and the skin should be white.
Production performance: the weight of Taoyuan chicken is 3.34 kg for adult rooster and 2.94 kg for hen. Meat production performance: Taoyuan chicken grew slowly, especially in the early stage. The weight of a five-and-a-half-month-old rooster is 71.29% of that of an adult rooster, and that of a hen is 64.54%. The slaughtering rate of 2-year-old chickens is 84.9%, the semi-eviscerated rate of hens is 82.06%, and the fully eviscerated rate is 75.90% for cocks and 73.66% for hens. Egg laying performance: the average age of laying was 195 days, the number of eggs laid at 500 days was 86.18, the average egg weight was 53.39 grams, and the eggshell was light brown. Reproductive performance: the mating ratio of male and female is generally 1RV 10mur12, the fertilization rate of fertilized eggs is 83.83%, and the hatching rate of fertilized eggs is 83.81%. Under grazing conditions, the 4-week-old brooding rate was 75.66%, the survival rate during the breeding period (5Mel 32 weeks) was 95.80%, and the survival rate during the laying period (33Mel 72 weeks) was 94.39%. Nest sex 1 MUE 2 times a year.
Direction of utilization: Taoyuan chicken still has some disadvantages, such as slow growth, late feathering, low feed utilization rate, low fecundity and so on. In the future, while strengthening the breeding of this breed, it can also introduce human meat chicken breeds to improve the speed of early growth and development. Improve the quality of chicken flocks, develop in the direction of broilers, and improve the commodity rate.
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Prevention and treatment of infectious bursitis in chickens
(1) strengthen feeding management and hygiene measures to strengthen the feeding and management of chickens, maintain the interval between chicks, implement a full-in-all-out breeding system, do a good job in cleaning and disinfection, reduce and avoid various stress factors, and so on. These general principles for the prevention and control of infectious diseases are very important for the prevention and control of infectious bursitis. (2) Immunization enables chickens to acquire specific resistance through effective vaccination, which is the most important measure to prevent infectious bursitis. 1. Improve the antibody of breeder chickens
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What disease did the goose get when he defecated green and died quickly?
Ma Yonggen, Qinxing Village, Zhenze Town, Wujiang City, called to say that he raised more than 400 geese. When the geese weighed three or four jin, he found that several geese could not afford to lie down, excreted green feces, and died quickly. Six geese died in two days, and several geese also showed lying symptoms. The local veterinarian diagnosed a septic infectious disease. According to the above situation, geese may have viral enteritis or avian cholera. Both diseases have symptoms of green feces and rapid death, which should be further diagnosed.
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