The quality of broiler chickens has a huge impact on the production performance of the hens for the rest of their lives, so the uniformity of broiler chickens is extremely important. Uniformity mainly includes body shape, weight, and sexual maturity. In actual production, the weight uniformity is the most important. Weight uniformity refers to the percentage of birds in the population whose body weight is within 10% of the standard body weight. Uniformity can reflect the quality of broiler chickens and can also reflect the management level of chicks and broilers. Therefore, the degree of evenness directly determines the production performance of late chickens. In actual production, to improve the uniformity of broiler chickens, the following aspects should be noted: First, timely break, and break down to be accurate The purpose of the implementation of cutting off is to avoid fighting each other and reduce feed wastage. It is recommended that the offspring be performed at 6-9 days of age, and VK can be added to the diet or water 2 days before and after the break to reduce bleeding and reduce stress. Method of breaking the crucible: gently press the throat of the chicken by hand to retract the tongue and avoid scalding. The upper jaw is cut off by 1/2, the lower jaw is cut by 1/3, and the cutting blade is contacted with the chicken for 2-3 seconds. The upper and lower jaws of the chicken are burned once to reduce the risk of infection and reduce the chick's stress at that time and later. . Second, regular random sampling and weighing Weighing is an effective way of correctly assessing the average weight and evenness of the flock population. 1. Make sure to weigh once a week: Before 3 weeks of age, groups can be weighed and each group has about 30 chickens. Individuals can be weighed after 3 weeks of age. The ratio of withdrawal depends on the size of the flock. More than 5,000 flock of chickens can be drawn for 2-3%, and 1000-5000 flock of chickens can be fetched for 5%. 2. Weighing time: Perform on the same day of the week to ensure accurate weighing. Only in this way can we truly understand the growth and development of the flock. 3. After the weighing, the average value is compared with the standard weight of the week, and then the feeding amount of the next month is adjusted so that the chicken is always in a proper weight range. Third, the appropriate breeding density Feeding density is also a very important aspect that determines the level of evenness. High-density flocks have limited activity, slow growth, and result in decreased uniformity. If the density is too small, raising costs increase. It depends on the chicken house and equipment configuration. Fourth, ensure that the chickens eat evenly and properly Feeding during the rearing period must have sufficient feeding area, feeding, and drinking positions. The feed needs to be evenly distributed to minimize competition for birds, maintain weight, and evenness of the flock. For caged laying hens, feeding in the trough should be uniform. After each feeding, it should be 4-5 times to ensure even feeding. Online raising and ground feeding, in order to ensure that each chicken has a sufficient material level, according to the situation to increase the auxiliary barrel. To ensure the quality of feed, according to the changes in body weight, the amount of feed should be properly adjusted. When the body weight exceeds the standard, the feed amount of the previous week can be maintained. When the standard weight is lower than the standard weight, each chicken is increased by 3 times per day. -5g material amount. Fifth, timely and rational transfer group 1. Pick out chickens with weaker constitutions and smaller individuals to keep them in stock, postpone the reloading time so that they can reach the standard as soon as possible so as to improve the overall evenness. 2. Those chickens with discriminating mistakes, poor development and obvious illnesses should be eliminated in time, the dead chickens should be dealt with promptly, and the caged laying hens should be supplemented with vacancy in time to maintain the same number of chickens per cage. Since the epidemic prevention during the breeding period is relatively frequent, the immunization procedures should be improved and the vaccine should be used scientifically to avoid excessive stress on chickens. This will also help ensure the uniformity of the chicken population. Six, the environment should be suitable Prevent high temperature and humidity, low temperature and low humidity phenomenon, pay attention to ventilation, control light intensity, light time should not be short, strength should not be strong, to prevent precocious puberty; do a good job of disinfection and epidemic prevention, reduce the incidence of disease. For chickens raised on the ground, keep the litter clean and dry to create a good environment for the chicken.
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