which is the key to breeder breeding technology and management
July 21, 2021
Breeding breeders is to obtain as many qualified eggs as possible with high fertilization rate and hatching rate, so that each breeder can provide more robust newborn chicks.
1. Breeders should be divided into groups at the right time
In the brooding and growing process of chickens, in order to control the chicken group weight and body size within the range of the breed standard and improve the uniformity, each batch of chickens is weighed at the age of 20 days and 7, 13, and 18 weeks. , Body size measurement, the chickens are divided into three groups: large, medium and small. The brooding and rearing period is mainly based on measuring the tibia length, supplemented by the method of weighing; at the age of 18 weeks, they are grouped and raised according to the development degree and weight of the cockscomb.
2. Ensure the nutritional needs of breeders
During the brooding period, the production and development of chicks are rapid, and their metabolism is strong, and their nutritional needs must be met. The nutritional requirements of the diet contain metabolizable energy 12.13 MJ/kg, crude protein 19%-20%, lysine 1.1%, methionine 0.45%, calcium 1.0%, and available phosphorus 0.5%. And increase the amount of vitamins.
The middle chickens are transferred to the group and enter the laying hen house until the entire egg production peak period. This is the most important period of the chicken's life, and it must be fed with high-quality feed in terms of nutrition. When the weight of the young hen reaches 1.620 grams, that is, 18-19 weeks of age, immediately change the feed during the peak period of egg production, without using pre-production feed or indirect feed change. This is beneficial to increase the nutrient reserves of the young hens, and lay a material foundation for reaching the peak egg production as soon as possible and maintaining the peak period for the due time.
3.light management requirements
The light time requirement is longer than in the past. It is best to maintain a slightly longer constant light time (12, 13 hours) during the rearing period. The start time of supplementary stimulation before laying is set when the laying hen feed is changed or one week later. During the laying period, the daily light was increased to 16 hours, and the daily light was increased to 17 hours in the first three months of elimination.
4. the ventilation management of the chicken house
Ventilation is a very important and frequent problem in modern chicken farming operations. Good ventilation allows the chicks to grow rapidly, the hens are highly productive and the flocks are strong. Especially in cold weather, it is extremely important to try to get rid of the ammonia gas and keep the proper temperature in the house. We mainly use a combination of natural ventilation and forced ventilation for control. The concentration of nh3 in the house should not exceed 20ppm, and we insist on cleaning the feces once a week.
Especially during the peak period of egg production, chicken intake and water intake increase, excrement moisture increases, and humidity increases aggravate the damage of harmful gases to the respiratory tract ciliary epithelial cells, which can easily induce respiratory diseases.
