In order to adjust the feeding management in time and better adapt to the growth of breeders, we need to understand the basic growth conditions of breeders at each age and the development of various systems of the body:
0-21 days (0-3 weeks) Mainly develop the immune system: such as lungs, heart, feathers, and bones. During this period, attention should be paid to suitable temperature, good ventilation, uniform feeding, sufficient material level and even distribution. Use the right vaccine at the right time, with adequate and balanced light intensity;
21-56 days (3-8 weeks) Bone growth is 85% complete. Normally, bone growth is complete until day 84. During this time, in addition to bone growth, muscles and tendons also grow at the same time. The body weight uniformity at this stage should reach 80%. If this goal is not achieved, chicken selection should be carried out on the 28th day (4 weeks), and the chickens should be reared in groups according to body weight. The time to complete the chicken selection should not exceed the 56th-63rd day. sky;
77 days (11 weeks) At this time, reproductive organs begin to develop (such as testes and ovaries). At this time, the wrong male and female identification should be selected and eliminated;
105-161 days (15-23 weeks) Sex hormones increase rapidly during this period (mainly 140-161 days), and sexual maturity will appear after this period of time. During this period, pay attention to the weight of roosters and hens. When the accumulated energy of the hens is not less than 23,000 kcal, or when the chicken breasts reach the “U” shape, light stimulation can be used;
161-210 days (23-30 weeks) Reproductive organ development fully reaches the stage of sexual maturity (210th day), the most important thing during this period is to control the feed of roosters and hens, and it is necessary to control the transition from the growth period to the egg-laying period weight, don’t be overweight.
How to arrange feeding so that chickens can have high body weight uniformity without picking chickens
The weight uniformity of chickens is very important because it directly affects egg production efficiency. According to the target, the weight uniformity on the 28th day (4 weeks old) should reach 80%, and good management must be arranged from the first day when the chickens are received, the light intensity should reach 30Lux, and the light should be uniform. In order to allow each chicken to see the place to drink and eat, the lighting time should be arranged, 23 hours/day at the first week of age, and reduced to 12 hours/day after one week of age. Full feeding should be arranged in the first week of age, because the growth of chickens during this period will directly affect the weight uniformity of the chickens in the breeding period. The system will be very good, the resistance will be high, and the body of the chicken will be very healthy.
In addition, if it is found that the uniformity of the chickens is not very good, then the chickens should be selected and raised separately in the 4th week, and the weight adjustment of the chickens should be completed before the 9th week. Because the skeleton structure of the chicken has grown completely in this week, if it is selected after the ninth week, it will have no effect.
Post time: Jan-28-2022