In the production of laying hens, some hens do not have peak egg production. What are the reasons for this? The five major reasons for the absence of peak egg production in laying hens are described below: 1. Effect of feeds The energy and protein in full-price feeds cannot meet the production needs of laying hens during the peak period of egg production. Raw protein quality is poor. The peak diet uses too many raw materials with low protein utilization, such as rapeseed meal, cottonseed meal, etc., and the protein digestion rate is 75% and 72%, respectively, and the palatability is poor and contains poisons. In addition, the use of moldy raw materials will also lead to the peak of egg production. Unbalanced or inadequate nutrition. Insufficient methionine and cystine in the feed during the peak period of laying hens, according to the general formula, usually the egg + cystine addition amount is 0.53% ~ 0.61% to meet, arginine, lysine should also be considered; mineral salt ratio Improper or insufficient, especially the imbalance of calcium and phosphorus. The normal ratio is between 5:1 and 6:1. During the peak period, trace elements manganese can not be ignored. Each kilogram of feed should be added with 100 mg to 120 mg. Vitamin deficiency will affect the production. The peak of egg production for laying hens needs vitamin A1 supplementation. Vitamin D3, vitamin E. Second, the poor quality of broiler chickens does not reach the standard. Mainly in the breeding period, due to poor feeding and management, often stop feeding, stop water, poor feed quality. Some are overweight. The main reason is that the feeding method is not scientific. The size of the flock is different, and different batches of chickens are kept together, resulting in inconsistency in laying time. Third, the impact of stress Feeding time changes, often changing the feed formula or variety, stop feeding water, resulting in decreased egg production, increased egg breakage, high temperature or low temperature effects. Fourth, the impact of light during the peak season of light production should be stable in the 16 hours to 7 hours (including sunshine). The duration of light hours is short, and frequent blackouts, irregular opening and closing times, etc. all affect the formation of egg production peaks. Fifth, the impact of the epidemic Before the peak, the chicken is most susceptible to infection with white chicken Libya and egg drop syndrome, fatty liver syndrome, etc., can directly or indirectly cause the emergence of layers of laying hens.
Laryngoscope Fibre Optic,Medical Bulb Laryngoscope Set,Lightbulb Laryngoscope,Conventional Adult Bulb Laryngoscope
Jiangsu Yongle Medical Technology Co., Ltd. , https://www.jsylmedical.com