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Scientific breeding of high quality yellow chicken (below)
Third, the breeding of parental breeder chickens The breeding and management of parent breeder chickens can be divided into three periods, namely the brooding period (0 to 6 weeks of age), the breeding period (7 to 22 weeks of age) and the laying period (23 to 68-week-old), different breeds of different periods of feeding and management methods are not the same, generally provide units of seedlings are equipped with a corresponding feeding and management manual, ordering seedlings should be requested from the seedlings, and read carefully, according to feeding Manual feeding. The following mainly introduces the feeding and management points of breeder chickens in different periods. 1. Feeding and management points during the brooding period (1) Preparation before brooding and selection of chicks: 1 week before hatching, the brooding house and all brooding equipment including food troughs, drinking fountains, warmers, etc. should be thoroughly sterilized. The first 12 to 24 hours to start the heating equipment, so that the chicken back temperature of 32 ~ 34 °C, room temperature of 24 ~ 26 °C. When selecting chicks, the chicks are required to be robust, lively, and uniform in size. The color of the chicks is yellow or jute. The chicks' abdomen should be soft and the umbilicus should heal well without bleeding marks or black or brown. (2) Brooding temperature, humidity and ventilation: Broiler temperature is based on the height of the back of the chicks. As the chicks grow, the temperature of the brooding gradually decreases. Generally, the temperature of the chicken's back is 34-36°C. Room temperature 24 ~ 26 °C, after the weekly reduction of 1 ~ 2 °C, the specific room temperature according to the temperature, the type of chicken house and the health of the chicks to be adjusted. When the brooding temperature is appropriate, the chicks have good appetite, drinking water, lively during the day, quiet and screaming at night, evenly spread the chicks, stretch their necks, and stick their heads or heads to the wings to sleep; when the temperature is low, the chickens Heavily playing with piles, poor appetite, and reluctance to walk, he can often hear screams from chickens. When the temperature is high, the chicks breathe open, drink more, and stay away from heat. The relative humidity of the brooding room is maintained at 65% to 70% in the first week, and decreased to 55% to 65% in the second week. With the growth of chickens and the decrease of indoor temperature, the increase in the intake, drinking water and excretion of chickens, attention should be paid to reducing the humidity to prevent the contamination of feces and the reproduction of pathogenic bacteria. At the same time, attention should be paid to opening the window of the brooding room to enhance ventilation and ventilation. . (3) Feeding density and material and trough position: Feeding density differs depending on the feeding method. Generally, 15 to 20 eggs are reared on a square meter and 45 to 55 eggs are kept on cages. During the brooding period, each chicken needs 4 to 6 cm of feed and 1.2 to 1.6 cm of drinking water, which can be increased or decreased according to the site conditions. Each barrel feeder can feed 20 to 30 chickens, and each can feed 100 to 150 chickens. (4) Feed and Feeding: During the brooding period, chickens of yellow feather broilers can be used. Feeding feeds should be done in small quantities and fed 4 to 5 times a day to allow the chicks to feed freely, feeders, and drinking fountains. Should be scattered in the flock. (5) Timely cutting off: When the choice is about 7 to 10 days old, it can reduce the incidence of licking and licking, and usually cut off the upper 1/2 and lower 1/3. Vitamin C can be added to drinking water 1 to 2 days before and after the break to prevent bleeding. 2. Rearing (7-22 weeks old) feeding management (1) The first seeding: 6-8 weeks old, the main elimination of male and female identification and poor growth of individuals, the cock should choose large size And those who develop better. (2) Breeding density, feeding and drinking position: During the breeding period, the number of chickens raised per square meter is 6 to 10, and cages are reared at 20 to 30 cages per square meter, and the feeding length of each chicken is 8 to 10 centimeters, 15 to 20 eggs per barrel (medium chicken bucket); each chicken has a drinking length of 2.5 centimeters, and each waterer (chinese chicken drinker) feeds 100 eggs. (3) Feed and rearing: Starting from 6 to 8 weeks of age, feeds should be fed to low-nutrition reserve chickens and fed in accordance with the requirements of the introduced chicken breeding manual, that is, restrictions on rearing, breeding of breeders Limiting rearing can not only save 20% to 25% of feed, but also increase the egg production of breeders. The general limit of feed is 75% to 80% of free feed. Restricted feeding can adopt the following three methods: First, the daily limit of feeding, that is, according to the requirements of the feeding manual, feed the amount of feed once a day, free drinking water; Second, every other day of limited feeding, that is, the amount of feeding for two days On the first day of feeding in the morning and in the afternoon, if the feed trough or bucket is sufficient, it can be fed once in the morning and not fed on the second day, only for drinking water. This method can make all the chickens Feeds can be eaten to provide a good tidy chicken population. Third, weekly feed restriction is to feed the total amount of feed each week for 5 days, stop for 2 days, and be closed on Wednesdays and Sundays. 5 days feed. (4) Regular weighing: During the bred period, individuals from 3% to 5% are randomly selected every 1-2 weeks to weigh on an empty stomach, calculate the average weight, and then compare with the weight required in the breeding manual. The average body weight of the flock is the same as recommended in the Feeder's Handbook. Continue feeding according to the manual; if the average body weight is too high, do not increase the amount of feed within the next week and continue to maintain the last week's feed; if the body weight is below For the recommended body weight, increase the amount of feeding accordingly. The increase depends on the body weight. If the body weight is lower by 10%, the amount of the diet should be increased by 10%. The rest are analogized until the average body weight is appropriate.