Matters needing attention in forced molting of chickens with improper management and easy to die

Chicken

The main results are as follows: (1) Chicken flock selection: in general, the flocks with low egg production rate in the first year do not need to undergo forced molting (except ancestral chickens), and only high-yielding chickens have molting value.

(2) elimination in advance: chickens should be observed before forced molting. Choose healthy and disease-free chickens with wide pubic distance, loose anal sphincter, soft abdomen, well-proportioned body shape and head development for forced molting. Sick, weak chickens and head, eyes, crown, toes, wings abnormal, posterior abdominal prolapse is too large, abdominal hard feeling, body weight is too low, will be eliminated.

(3) molting season and time: to implement forced molting, we should consider not only the economic factors, but also the season and the condition of the flock. Forced molting in hot and cold seasons can affect the effect of molting; molting in cool seasons lays 50.7% more eggs than in hot seasons. Forced molting is carried out when chickens begin to molt naturally, and the molting effect is the best.

(4) immunity and deworming: the chickens were dewormed and injected with Newcastle pox I 7 days before forced molting. If it is carried out from May to November, it is best to be vaccinated.

(5) Light treatment: when the water and feed were stopped, the light was suspended in the open chicken house, while in the closed chicken house, the light was reduced to 8 hours for 10 hours, lasting for 30 days from the beginning of the treatment. After the 30th, the light of the open chicken house increased by 1 / 2 hours per week, and returned to 15 / 16 hours within 2 / 3 weeks (including sunshine time). The closed chicken coop increased by 2 hours per week and recovered to 15-16 hours within 3 weeks.

(6) adding shell powder: within 3-5 days after molting, many chickens still lay eggs, but there are more soft eggs and broken eggs. In order to improve the eggshell quality of eggs laid before laying, and reduce soft eggs and broken eggs, 2 kg seashells were given to every 100 chickens at the beginning of water and feed stoppage, so that the number of laying days could be extended by 3 to 4 days.

(7) mastery of starvation time: flexible control according to chicken weight loss rate, chicken herd health status, mortality rate and season. Don't just pursue weight loss and ignore other factors.

Chicken

(8) feeding quantity: when resuming feeding, the feeding should be uniform to prevent eating more or less at one time. The amount of feed should be increased day by day to control the weight and obesity. When starting production, the body condition of the chicken before feathering should be reached or close to. When feeding zinc-containing feed, the amount of zinc should be measured and evenly distributed to prevent poisoning caused by excessive zinc feeding.

(9) adhere to the end, do not compromise: stop water, stop feeding treatment, great stress to the chicken, especially after the suspension of feed 10, the chicken crown becomes black, lethargic, thin and dying. At this time, if you start feeding, it is easy to make the molting stay in an incomplete state, and the egg production will not be high.

(10) adding multivitamins and methionine: in order to improve the effect of forced molting, about 15 days after stopping feeding, according to the laying situation of chickens, multivitamins and methionine were supplemented properly to improve the laying performance after molting.