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First, the measures to reduce trauma 1. The density during feeding should be reasonable: the litter should be as thick as possible, to ensure that the bottom of the cage or the net surface is flat and no sharp hard objects; using cage or online feeding, to add a layer of elastic Plastic mesh mats to reduce the incidence of breast cysts, while reducing the chicks lying time, to avoid too long chest pressure. 2. Reduce the number of captures: Use fences to carefully enclose and minimize the number and intensity of captures. Antibiotics and vitamins must be added to the feed to cut off lice and vaccination to reduce the effects of stress factors. It is best to use light blue or red lighting to catch chickens after dark or before dawn. Don't panic the flock and prevent frying. 3. Chickens should be transported in special cages or hatching boxes: Soft grass or grass mats should be laid on the bottom of cages for chickens, and hooks and stabs should not be left on cage nets or boxes to prevent stab wounds on the surface of chickens. Carefully manage the transportation during transportation, be cautious and slow to prevent oscillation and shaking. When loading and unloading the truck, it should be carefully mounted and lifted to prevent it from tilting or turning upside down. Second, measures to ensure the color of the product 1. Try not to mix the hairy chicken: such as black hair chicken, green black chicken, green black chicken. 2. Feeding yellow pigment feed: In the late feeding period of broilers, yellow corn or yellow pigment feed should be added to make the carcasses yellow. 3. Control the temperature of the armpit hair when slaughtered: The scalding water temperature is lower than 65 °C, the leather will not fall off, and the carcass remains dark yellow after processing. If the water temperature exceeds 65°C, the leather is hot and the carcass is milky white. 4. To prevent traumatic injury: In the rearing period, slaughter chickens, during transport, and during slaughter, care must be taken to prevent collisions and squeezing, so as to avoid blood vessel rupture and subcutaneous congestion, affecting the color of the products. Third, prevent and reduce the adverse consequences of stress factors The harm caused by stress is both single and comprehensive, and various stressors can cause the chicken's "systemic adaptation syndrome" and seriously affect the quality of commercial broilers. . Relieving and adjusting stress factors mainly focus on the environment, management, hygiene and physiology. There are also three types of drugs available. 1. Preventive drugs: can reduce the impact of stress factors on the body, such as stability and analgesics, tranquilizers, sedatives and so on. 2. Adaptation drugs: can improve the body's defenses, from the role of remission and regulation of stimuli. Such as demiazole, fumarate, vitamin C, Acanthopanax and ginseng. 3. Symptomatic drugs: Refers to drugs that respond to stress symptoms. 4. Slaughter as soon as possible to ensure the quality of meat. The shorter the feeding period for broiler chickens to reach the market, the less the consumption of materials and the better the economic benefits. Moreover, with the increase of the age, the meat will be tender and juicy. It will also be worse. Therefore, from the perspective of improving meat quality, as long as the market weight is reached, the shorter the feeding period, the better. In addition, in the later stages of rearing, about 10 days before slaughter, feeds that can affect the taste of chicken meat and fishmeal containing fishmeal should be stopped or fed little. The “residual drug†problem should be highly valued. Fifth, take appropriate measures to adapt to the changes in export inspection standards At present, many foreign countries implement new "food hygiene inspection system" for imported poultry meat, and comprehensively improve the health inspection standards. Its main contents include: elimination of diseased chickens, elimination of antibiotics, thiamine and other antibacterial agents and pesticide residues, Salmonella, Escherichia coli, Staphylococcus can not be detected, and strictly limit the number of general bacteria. Therefore, in the feeding process, we must correctly and rationally select medicines according to the regulations; we must choose no or low-pesticide residual feeds to solve the problem of preventing bacterial contamination so as to ensure the health of the people.