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, uniformity> 80%; mid-batch weight standard: standard weight 100 grams, evenness> 80%; late stage 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 principles of weight management: Pay attention to weight gain during the peak period of egg production (23 weeks to 35 weeks of age), maintain an appropriate weight during the mid-production period (36 weeks to 45 weeks), and post-lay (46 weeks to 63 weeks) Control weight gain to achieve the optimal body weight for the maintenance of chickens 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 maintenance time of the peak of egg production. At this time, we should focus on the midline level of weight and do the following feeding and management work:

Feed Management

1 Principle: According to the rules of chickens' feeding, the nutrient supply required by each chicken production is met.

2nd consumption standard: refer to the daily consumption standard of the breed.

Day 3 Consumption law: According to the rules of the chicken's feeding, it can be divided into four stages, which are pre-laying (accounting for 16.7% of total daily intake) and 2 hours to 3 hours after laying ( Takes 26.4% of the total food intake for the day, 12:00 to 14:00 noon (27.1% of the total food intake), and 2 hours to 3 hours before the light turns off (accounts for 29.8% of the total daily intake) .

4 feeding methods: feeding 4 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.

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 chickens to eat, lack of drinking water, strictly limiting the chicken's intake; the proportion of feed water should be changed according to different temperatures, generally 1:1.5~ 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 total drinking water) and 10:00 to 13:00 (at noon) after laying eggs. The total amount of drinking water accounts for 27.2% of the day, and 2 hours to 3 hours before lighting off in the afternoon (accounting for 41.8% of the total drinking water).

4 Drinking water management: check the water four times a day. If there is insufficient water supply, check the pressure gauge of the filter, the pressure of the pressure reducing valve, whether there is water leakage, or 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. Choose to stay away from polluted water sources; weekly flush the filter 1 or 2 times; drinking water pipes are regularly sterilized. At the same time, the filter should be flushed every half month or when the pressure gauge at the outlet of the filter is lower than the inlet pressure gauge.

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, night light can be used. 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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