no.1The effects of stress on the flock
Cold stress refers to the stress response that occurs in the flock when the outside temperature suddenly cools. Cold stress will not only reduce the immunity of chickens, frequent diseases, but also significantly increase the energy needs of the chickens on the day.
no.2Ways to prevent cold stress
1.Do a good job of keeping the chicken coop warm.
The longitudinal ventilation inlet and wet curtain should be closed after the weather turns cold in the standardized chicken coop to avoid cold stress when the cold air comes. At the same time, an air deflector should be installed in the chicken coop where the wet curtain is leaning on the side, so that the cold air enters the chicken coop and is in the upper layer of the chicken coop to reduce the cold stimulation of the cold air on the chicken body.
Pay attention to observe whether there are other air leakage gaps in the chicken house, close the gaps other than the air inlet, and pay special attention to the blocking of the manure outlet to avoid causing local low temperature areas or ventilation short circuits.
2.Moisture-proof and dehumidifying.
Excessive humidity in the house reduces the heat retention of the feathers, and the increased air cooling effect of humidity is not conducive to the insulation of the house. In daily management, it is necessary to reduce the sprinkling on the ground, reduce the water consumption of disinfection of chickens, and check the drinking water system to avoid water leakage and wetting the chickensRemove the chicken manure in the house in time to reduce the increase in humidity in the house caused by the evaporation of water in the chicken manure.
3.Increase feed nutrition.
In winter, if there is a cold snap and the temperature drops suddenly, the flock itself cannot adjust the feed intake all at once, which will produce a great stress response, and the lack of energy may cause a decrease in the egg production rate. Therefore, you should pay attention to the weather forecast at any time and make the following adjustments 1-2 days before the cold snap:
1) Add 5-10g feed to each chicken for 3-5 days, so that the chicken maintains normal body temperature and egg production level, and then returns to the original feed amount after the cold snap passes and the temperature rises
2) Adding 5 kg of glucose per ton of feed for 5 7 days can quickly increase the energy intake of the flock and stabilize the egg production rate
3) Appropriately reduce the amount of soybean meal and stone powder in the feed, increase the amount of corn and soybean oil, and use 500 grams per ton of feedRiprozyme T500to maximize the energy level of the diet and reduce feed dust;
4) Add 200 to the diet 300 gramsvcor 1 kgShock Kingto alleviate cold stress in chickens.
4.Necessary ventilation is done.
In winter, the chicken coop is mostly in a relatively closed state to reduce the invasion of cold air. However, due to the vigorous metabolism of chickens, the air in the closed chicken house becomes turbid, and the concentration of harmful gases such as ammonia and hydrogen sulfide increases, which is easy to cause respiratory diseases and affect the health of the chickensIt is necessary to organically combine cold insulation and ventilation to remove harmful gases such as ammonia, hydrogen sulfide and carbon dioxide stranded in the chicken house in time and replace it with fresh air.
In short, in the winter feeding management, the problem of cold stress is more prominent, we need to pay attention to the harm of cold stress, make preparations, take effective methods to reduce or avoid the impact of external climate on production, to ensure good production performance of chickens.