1. Adding vitamin C Russia's research results show that when the temperature of the house is 32 °C, 60 mg of vitamin C is added per kg of feed, which can increase the egg production rate by about 12% in 10 weeks; when the house temperature is 35 °C Add 44 mg of vitamin C per kg of feed to increase egg production by 11% in 20 weeks. Add vitamin C 400 mg per kg of feed at a temperature of 17.8 ° C to 44.4 ° C, and increase the yield of about 6% of eggs in 3 months; add 30 mg of vitamins per kg of feed at 7 ° C to 20 ° C. C, 7% increase in eggs within 48 weeks.
2. The results of choline test showed that the laying rate of laying hens fed with 0.05% choline was 76.2%, the average egg weight was 61.5 grams, and the average final body weight was 1943 grams. The laying rate of laying hens without choline was 73.3%, the average egg weight is 58.7 grams, and the final weight is only 1906 grams.
3. Feeding pollen A study by an agronomist in Romania showed that the use of corn pollen in feed to feed hens can increase egg production by 11%, and the egg color is brighter and the egg yolk is larger than normal egg yolk.
4. Adding tryptophan Tests at the chicken farm in Fukushima Prefecture, Japan, showed that adding 500 mg/kg of tryptophan to the basic ration of laying hens increased the egg production rate by 9% compared with the non-addition. The egg volume increased by 5.5 grams, and the egg production rate after 53 weeks of age still increased.
5. Adding acanthopanax senticosus powder Russian experts have found that 0.15 grams of acanthopanax senticosus powder per kilogram of body weight for hens aged 13-14 months in the late laying period, the 10th day of feeding The number of eggs per thousand chickens was 242.8, which was 4% higher than that of the control group. The egg production after 10 days was 5.7% to 17.8% higher than that of the control group.
6. Adding red peppers Hungarian animal husbandry research shows that the red peppers are dried and ground into powder and fed into the feed to feed the laying hens, which can increase the egg production and make the egg yolk color change from pale yellow to dark yellow or earth. red. The specific method is: adding 1% red pepper powder and lotus root powder to the chicken feed, adding a small amount of vegetable oil, and then feeding the chicken, the egg production rate can be increased by 7% to 8%.
7. Hunger Law The Ukrainian Institute of Agriculture and Animal Husbandry's experiments have shown that the use of starvation can increase the hen's egg production. The method is: feeding the hens one month before entering the laying period, that is, gradually reducing the feed amount from the first week, and the amount of the feed after one week is controlled at 1/20 of the normal amount, mainly by drinking water. Lord, the hen is in a state of high hunger. After hungry feeding, gradually add the feed to the normal amount, and return to the normal amount, then enter the laying period. Since the hen's vegetative growth is controlled and transferred to reproductive growth during the hunger phase, it promotes reproductive development and estrogen. Secretion, thus increasing the egg production by about 40%.
8. Head cooling method The University of Texas study found that in the summer, as long as the hen's head is kept cool, it can increase the egg production. Therefore, they installed a duct on the top of each cage to supply air-conditioning and lower the temperature of the hen's head. As a result, the hen's egg production rate increased by about 25%.
9. Electrical stimulation method Japanese experts have confirmed that the use of electrical stimulation can increase the laying rate of hens, so that the egg laying period, usually only 14 months, is extended to 2 years. The method is as follows: firstly connect the power supply and adjust to the voltage that the chicken body can adapt, and then touch the tip of the positive and negative rods respectively on the surface of the chicken body and the ovary, and after 3 seconds of electrical stimulation, stop for 1 second. Stimulate once for 3 seconds. Electrical stimulation should be carried out on the 7th day after the start of production, and the effect is best. After the egg is finished (about 1 year), it is necessary to continue to lay eggs, but also according to the above method, but in principle, each chicken can only perform one electrical stimulation within one year.
10. The trough coloring method Israeli scholars have found that chickens like colorful colors. Therefore, the feeding hen's trough is painted in various colors to make it color-colored, and the hen's appetite is greatly increased, and the egg production can be increased by about 12%.
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