The mating rate is an important index to judge the healthy reproduction of chicks, and a good flock should have a survival rate of more than 98%.
(2) the degree of reaching the standard weight
Whether the average weight of chicks reaches the standard weight can roughly reflect the growth of chickens. Different breeds have different standard weights, and the average weight of chicks should basically increase according to the standard weight. Even if some chickens in the flock are smaller or larger. As long as the difference is not big, the average weight of chickens is basically close to the standard.
(3) the uniformity of chicks
Chicken uniformity is one of the important indexes to test the quality of brooding. If more than 75% of the chickens are between 0.9- 1. 1 of the average weight, it can be considered that the weight of these chickens is relatively uniform; If less than 70% of chickens are in this range, it means that a considerable number of chickens are not growing well, and the growth uniformity of chickens can be determined according to the following methods. Chickens are regularly weighed on an empty stomach every weekend, and 3% or 5% of flocks or 100 ~ 200 chicks are randomly selected for weighing one by one. Then calculate the uniformity of the flock. The calculation method is to calculate the average weight of chicken first, and then multiply it by 0.9 and 1. 1 respectively to get two numbers. The ratio of the number of chickens weighed between these two numbers to the total number of chickens weighed is the neatness of this group of chickens. In the process of sheep development, the weekly uniformity is changing. When it is found that the uniformity of sheep is worse than that of the previous week, there must be some factors that have had a bad influence in the feeding process of the past week. At this time, we should carefully find out the reasons and take targeted measures to correct them according to the reasons to ensure that the growth and development of chicks meet the requirements of varieties.
(4) Immunity and antibody
Immunization and antibody level of chicks can also judge the healthy breeding effect of chicks. Chickens should be vaccinated with Marek's vaccine, which has a high antibody level. At the same time, the corresponding antibody level should be detected according to the inoculation of other vaccines to ensure the health of chicks.