To achieve the target of "weekly rate of egg production per week" in the laying period of egg breeders, we must first perform weight management and maintain the best weight standard for egg production so as to maximize the production performance of the flock. Weight standard
Egg production peak weight standard: standard weight 50 grams, evenness> 80%; mid-batch weight standard: standard weight 100 grams, evenness> 80%; late egg production weight standard: standard weight 100 grams, evenness> 75 %. At the same time, the weight change of the whole laying cycle should be stable. It is recommended that the average weekly growth of 10 to 15 grams between the ages of 23 weeks and 26 weeks be the best; from the 27 weeks to the phase of elimination, the average weekly increase will be 3 grams. 5 grams is best.
Weight management principles and methods
The general principle of weight management: The peak period of egg production (23 weeks to 35 weeks of age) focuses on weight gain, mid-term (36-45 weeks old) of egg production maintains a proper weight, and the late period of egg production (46 weeks to 63 weeks of age) controls weight Growth to maintain the body weight standard for optimal egg production and maximize egg production performance.
Pay attention to weight gain at the peak of egg production
The growth of body weight at the peak of egg production determines the duration of egg production peak. At this time, we should pay attention to the weight midline level and do the following feeding and management work:
(1) feeding management,
1 Principle: According to the rules of chickens' feeding, the nutrient supply needed by each chicken production is met. 2nd consumption standard: refer to the daily consumption standard of the breed. Day 3 Consumption pattern: According to the feeding rules of chickens, it can be divided into four stages, which are respectively before laying eggs (accounting for 16.7% of the total daily intake), and 2 hours to 3 hours after laying. (26.4% of the total daily food intake), 12:00 to 14:00 noon (27.1% of the total food intake), and 2 hours to 3 hours before the light is turned off at night (accounting for the total daily food intake 29.8%). 4 Feeding methods: feeding 4 times to 5 times a day, the recommended time is 5:30, 8:00, 11:30, 13:00 and 16:30; 3 times a day, the recommended time is 10:00, 15:00 and 1 hour before turning off the lights.
(2) Drinking Water Management
1 Principle: Ensure that drinking water is sufficient and hygienic. 2 The relationship between drinking water and body weight: The chicken's drinking capacity determines the willingness of the chicken to feed, and the lack of drinking water severely limits the feeding of chickens; the proportion of feed water should be adjusted according to different temperatures, generally 1:1.5 to 1: 2.5. 3 drinking rules: According to the rules of the drinking water of chickens, it can be divided into three stages, which are 1 hour to 2 hours (31.1% of the total drinking water) and 10:00 to 13:00 at noon. (accounting for 27.2% of the total drinking water), 2 hours to 3 hours before lighting off at night (41.8% of the total drinking water). 4 drinking water management: check the water four times a day, if it is found that the water supply is insufficient, check the filter pressure gauge, check the pressure relief valve, check for leaks, check whether the drinking nipple is damaged. 5 drinking water hygiene: In order to reduce the incidence of diseases, it is necessary to strictly control the health of drinking water. To choose a source of water away from pollution; weekly backflush the filter 1 or 2 times; the drinking water pipe is sterilized regularly. At the same time, the filter should be flushed every two weeks or when the pressure gauge at the outlet of the filter is lower than the inlet pressure gauge.
(3) Weight gain management
1 Do a good weight monitoring. Generally choose to conduct weight monitoring before feeding in the morning. The choice of weighing birds should take into account the front, middle and back of the house and the upper, middle and lower layers of the house. Individuals of the material line should be weighed. Special emphasis should be placed on weighing. The chicken cannot be changed after it is determined.
The percentage of chickens selected for sampling should be 1% of the total number of chickens, and the number of chickens should be calculated according to the standard number of 15616. The number of chickens per weighing is 156.
2 targeted management. If the group uniformity is higher than 80% and the weight average is lower than the standard weight, it is recommended to increase the number of feeds, increase the number of empty feeds 2 to 3 times during feeding, or increase the number of times of spurs so as to stimulate the appetite of chickens and increase the number of feedings. Daily intake of 1 g to 2 g; feeding of tidal ingredients or using a sterilizer to spray a small amount of fresh water or amenol and other nutrients in the chute to improve palatability, can increase the daily intake of 3 grams to 5 grams . In order to increase the feed intake of the flock, you can use night-time light supplements. The principle of supplementing light at night is that the former dark area should be longer than the latter dark area, and the dark area should not be less than 2.5 hours. By increasing nighttime lighting, the daily feed intake can be increased by 10g to 13g; the nutrient concentration of feed can be increased, and protein, vitamins, etc. can be increased. The content of nutrients can average 5 to 30 grams per week.
If the population uniformity is less than 80% and the average body weight is higher than the standard body weight, it is recommended to select and manage it in a timely manner.
Mid-stage maintenance of proper body weight
The production performance of mid-flock chickens tends to be stable, and abdominal fat deposition is accelerated. The point of management at this time is to adhere to weekly weighing, to limit feeding according to the weight of the birds and the weight of the eggs, to reduce abdominal fat deposition and to achieve continuity of production.
Post-laying period controls weight gain
In the late stage of laying, we must also adhere to the weekly weighing, and limit the feeding according to the weight of the birds and the weight of the eggs, so that the average weight of the flock will be controlled within the standard body weight of 100 grams, and the evenness is higher than 75%.
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