Due to various reasons such as catching, loading cages, and transportation, broiler chickens often cause bumps, lacerations, knife wounds, and fractures, which can reduce the level of goods and thus affect economic efficiency. The incidence rate was 16.82%. Therefore, in order to ensure that broiler chicken products are marketable, improve the grade of goods, and increase economic efficiency, some effective technical measures must be taken.
First, the measures to reduce trauma
There are many causes of traumatic injuries, such as excessive stocking density, crowding during growth, and brutal and brutal operations during capture and shipment, which can easily lead to injury. Prevent the occurrence of trauma should pay attention to the following points:
1. Density should be reasonable during feeding: The litter should be as thick as possible to ensure that the bottom of the cage or the mesh surface is smooth and free of dust and hard objects; in the case of cage raising or online feeding, a layer of flexible plastic mesh mat should be added to reduce The occurrence of breast cysts, at the same time, reduces the lying time of the chicks and prevents the chest from being stressed for too long.
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
Different regions, different people, and different colors of chicken skin. In order to achieve the requirements for the appearance color of goods in the sales area: The following measures can be taken:
1. Try not to mix the hairy chickens: such as black hair chickens, green black chickens, black and black feet chickens.
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 will remain dark yellow after processing. If the water temperature exceeds 65°C, the leather will be hot and the carcass will be presented. milky.
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 chicken's "systemic adaptation syndrome", which seriously affects the quality of commercial broilers. Relieving and adjusting stress factors mainly focus on the environment, management, hygiene and physiology. The following three types of drugs can be used.
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.
Fourth, as soon as possible slaughter, 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, and the less tender and juicy the meat will grow with age. 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 corresponding measures to adapt to changes in export inspection standards
At present, many foreign countries have implemented a new “Food Sanitation Inspection System†for imported poultry meat and have comprehensively improved hygiene 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 reasonably select medicines according to regulations; we must choose the problem of no pesticide residues and solve the problem of preventing bacterial contamination so as to ensure the health of the people.
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