Short-term fast fattening of sheep in winter

First, reduce material consumption appropriately. When the egg production rate has a declining trend after the peak of egg production in the flock, the materials may be reduced appropriately to reduce feed consumption. The method is: According to the reduction of 2.2 grams per chicken day, observed 3 to 4 days to see whether the decline in egg production rate is normal (normal weekly decline of 1%? 2%), if normal, then can be reduced by 1? 2 grams; There is still no abnormality, but 3 grams can be reduced. This will not affect the production of eggs, but also reduce feed consumption, prevent the body fat, reduce the number of moults and nesting hens. If egg production exceeds the normal rate of decline, the amount of feed must be immediately resumed in order not to reduce production performance. Practice has proved that the reduction should generally be carried out at the peak of egg production after 4-6 weeks, and when the peak egg production rate drops by 4% to 6%.
Second, sub-seasonal feed nutrition. The dietary nutrition of laying hens, especially those of laying hens, should change according to the season. When the summer temperatures are high, energy feeds should be appropriately reduced and vitamin C supplemented. When the winter temperature is lower than 10°C, energy feeds should be appropriately increased to reduce protein feeds and feed pellets.
Third, an appropriate increase in dietary calcium and vitamin D3 content. After the peak of egg production, the eggshell quality is often poor and the rate of broken eggs increases. Adding shell sand or coarse-grained limestone to the feed at 3 to 4 o'clock every afternoon can increase the strength of the eggshell formed at night and effectively change the quality of the shell. Adding vitamin D3 can promote the absorption of calcium and phosphorus.
Fourth, appropriate to add stress relief agent. Older chickens tend to be particularly sensitive to stress factors. When the flock is affected by stress factors, 60 ppm of succinate can be added to the diet and fed for 3 weeks; or vitamin C1 mg per kilogram of feed and double the dose of vitamin K3 can effectively reduce the stress.
Fifth, appropriate addition of choline chloride. The addition of 0.1% to 0.15% choline chloride in the feed can effectively prevent the layer from becoming obese and produce fatty liver, because choline contributes to the operation of fat in the blood.
6. Keep enough light. The daily light time should be 16-17 hours. The light intensity is 15-20 lux, which can prolong the laying period and increase the egg production rate by 5%-8%.
7. Appropriately eliminate low-yielding chickens. In order to increase the egg production rate and reduce feed consumption, chickens that often go to rest, excessively overweight or underweight chickens, sick chickens, and prematurely moulted chickens should be eliminated in time.
VIII. Take timely measures on the use of nested chickens. Later in the laying period, the nesting of laying hens will be enhanced, and it is found that nest chickens can be awake with testosterone propionate. The method is: Intramuscular injection of 12.5 milligrams per kilogram body weight, usually 3-4 hours to wake up.

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