Aspects of stabilizing the duration of egg production peaks in laying hens

Modern egg breeders have long egg production peaks, typically up to 6 months or longer. The peak egg production in the first laying cycle accounts for more than 65% of the total egg production, and egg production accounts for more than 63% of the total egg weight. If the rearing chickens are poorly cultivated and poorly managed during the laying period, the peak period of egg production will be shortened, especially at the peak of the peak period. Therefore, attention should be paid to the cultivation of reserve chickens and the laying period, especially It is the feeding and management work during the peak period of egg production. The specific aspects are:

1. Nutritional needs during peak egg production

The normal weight development of egg-laying hens is: 40-week-old before weight gain, 24 to 40-week-old average daily weight gain of 2-4 grams, then maintain a relatively balanced and slightly increased, once the peak stage of production Loss of weight means that excessive energy storage in the body indicates a decline in the egg production rate and the end of egg production peaks.

The daily intake of nutrients for a laying hen is used for the continued growth of chicken weight, egg production expenditure, basal metabolism, and the need for breeding activities. When designing feed formulations, it is necessary to calculate the exact nutrition standards for chickens such as energy, crude protein, amino acids, calcium, and phosphorus. Adjusting nutrient concentrations should be based on changes in the egg production stage and changes in feed intake. The content of two major elements with protein changes.

According to the empirical data, in the peak period of egg production, the light-weight varieties need to have a daily intake of metabolic energy of not less than 1255 kJ, a medium-sized variety of 1380 kJ, and crude protein of 17-18 g and 19-20 g, respectively. Multidimensional supply.

2, feed quality

The quality of the feed during the peak period of egg production should be high quality, such as feed storage time is too long, insects, deteriorating moldy, unclean raw materials, these feeds are not suitable for use, and some of the amount of cakes such as sunflower, cottonseed, rapeseed The amount of such cakes should be appropriately reduced.

The raw materials used to prepare the feed during peak hours should be as stable as possible. Because of the different regions, raw materials of different harvest seasons, their nutritional composition will have some differences. If not used for testing, although the percentage composition of the feed ratio does not change, the actual nutritional composition will be somewhat different. This leads to differences in nutrient intake and can also cause chicken stress responses.

3, lighting management

Closed chicken house, light intensity of 20 lux, not too strong. The duration of light production during the laying period should be stable at 16 or 17 hours, and should not be shortened. The time for artificial light-on and light-on switching is stable. For example, sudden stop of light, shortened illumination time, and reduced light intensity in the chicken house can cause a sudden drop in egg production.

4, standardize management, prevent stress

1 Feeding management procedures are not standardized, such as feed more than one meal or one meal, drinking water can not meet the supply, free to change operating procedures, such as feed, quail eggs, defecation and other operating procedures not in accordance with the system on time, etc., can lead to egg production The amount suddenly dropped.

2 equipment damage, such as pipe plugging, maintenance is not timely and cause water supply barriers.

3 Abnormal sounds, the presence of strangers, livestock, and feed, disease, and weather emergencies are all factors that cause severe stress reactions in the flock and must be avoided. Predictable stress factors should be added prior to the onset of vitamin supplementation in accordance with the vitamin requirements of the stress period.

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