Effect and Analysis of forced molting in Chicken
(1) Mortality during forced molting the measures such as fasting, stopping water and reducing light in the forced molting scheme are very stressful to chickens, and the mortality rate of chickens is a response to test whether the stress is moderate or not. Generally speaking, the mortality rate during the implementation of forced molting is no more than 3%, and it is more appropriate to control the mortality rate within 5% at the end of the recovery period.
(2) the weight loss rate of hens indirectly reflects the fat consumption in the fallopian tube. Only when the weight loss rate reaches 25% to 30%, can the fat deposited in the fallopian tube be basically exhausted, which is very important to improve the eggshell quality during the second laying period.
(3) the stripping speed of the main wing feathers when the laying rate is restored to 50%, a random sample of 30 chickens is selected. If more than half (5) of the 10 main wing feathers have been replaced, it shows that the forced molting is successful. Generally speaking, in the first 7-10 days of forced molting, the body feathers are mainly changed, and the main wing feathers begin to be replaced in 10-20 days. More than 70% of the main wing feathers are replaced within 50 days, and new feathers begin to grow more than 10 days after molting.
(4) body weight recovery and re-opening generally it is more appropriate to restore body weight to 80%-85% of the original 10 days after feeding, and to 85%-90% 50% in 20 days and 95% to 100% in 60 days. Generally speaking, the time from the implementation of forced molting to the recovery of egg production rate to 50% is 50-60 days.
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Key points and points for attention in surgical treatment of gastric perforation in pigs
Cases of gastric perforation in pigs are rare in clinic. The author has encountered two cases, one case died of misdiagnosis and ineffective treatment, postmortem examination diagnosed as gastric perforation, and the other case was cured after surgical treatment. The cases cured by operation are reported as follows: 1 Clinical symptoms A Duroc boar raised by a professional pig farmer has a body weight of about 75kg at the age of 6 months. It suddenly occurred on March 23, 2004, showing depression, loss of appetite, abdominal pain, frequent lying on the ground, and sometimes vomiting. Palpation shows pain in the abdomen and tension in the abdominal wall
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How to feed sick pigs
When pigs are sick, proper selection of feeding methods can not only improve the efficacy, shorten the course of treatment, and make them recover quickly, but also reduce drug waste and save drug expenses. Fasting administration. This method applies to sick pigs have appetite, medicine without special smell of the situation. This method is generally in the sick pig overnight, fasting in the morning when the drug mixed in the pig love to eat a little feed administration, so that it quickly eat up. By using this method, the medicine is not wasted, and the expected effect can be achieved. Pigs deworming, this method is the best. odor irrigation
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