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Cold Stress in Cow Stress Response
Release time:
2018-12-18
Compared with pigs, cows are afraid of heat and not cold, but the understanding of "absolutely not afraid of cold" is wrong. Whether in the north or the south, cold stress is more serious in winter at very low temperatures, which will not only cause a decline in milk production, but also may cause the occurrence of a variety of diseases and reduce the economic benefits of raising cows. Therefore, great attention should be paid to the cold stress of dairy cows in winter.
Compared with pigs, cows are afraid of heat and not cold, but the understanding of "absolutely not afraid of cold" is wrong. Whether in the north or the south, cold stress is more serious in winter at very low temperatures, which will not only cause a decline in milk production, but also may cause the occurrence of a variety of diseases and reduce the economic benefits of raising cows. Therefore, great attention should be paid to the cold stress of dairy cows in winter.
1.Cowshed cold warm
The optimum ambient temperature for cows is10～16℃, calves are17℃, the tolerance range is-15～26C. Do a good job of cowshed cold insulation, available transparent plastic film will be closed doors and windows. After the winter, the semi-open or with sports ground cattle house, not only to use plastic film closed, but also need to hang grass curtain or quilt at night, during the day curtain, open the film, to prevent cold wind invasion. When the outdoor temperature is-3When the temperature is below ℃, the temperature in the house can be maintained0Above ℃.
2.Strengthen scientific feeding
Winter, cold season concentrate daily than normal feeding standard increase10%～15%And pay attention to the addition of fat in feeding to improve the cold-proof ability of cattle. In addition to ensuring that cows maintain their own nutrition, but also to supply the nutritional needs of fetal growth and development, but also to accumulate certain nutrients to ensure the needs of lactation. Need to add in feedingLick brickFree lick, supplement the cattle body to phosphorus, calcium, selenium, manganese, zinc, magnesium, cobalt elementsto meet the needs of group health. Those who have the conditions can be fed with white distiller's grains in an appropriate amount to enhance the ability of cattle to keep out the cold. Each head can be fed every day.5kg. Pay attention to feed high-quality hay or silage corn feed, each head daily25kg. In addition, winter be careful not to mix snow or ice into the feed, never give the cow to drink too cold water, it is best to drink15～17degree of water.
3.Strengthen daily management
In winter, most dairy cows are in pregnancy, and poor feeding management is prone to miscarriage and stillbirth. Daily management should pay attention to avoid crowding and slipping of cows. During grazing and exercise, it is strictly forbidden to hit cold whip, rush and turn, fall and other phenomena to avoid trauma or abortion. In winter, it is necessary to keep the dairy sports field dry and remove the accumulated water to prevent the cows from lying on ice, ice water or snow. Strengthen the protection of the cow's udder in winter to prevent the nipple from being frostbitten or frostbite. Apply vaseline ointment on the nipple to prevent cold wind attack, especially when the cow wears a cotton bra when exercising or exercising outside the house after delivery.
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