Prevention and treatment of estrus disorder in sheep

The reproductive function of ewes is closely related to sunshine, air temperature, humidity, changes of feed composition and other external factors. These factors can affect ewes' estrus together, especially the development of sheep follicles is greatly affected by season and climate. The number of ewes is also related to the weather. Let's take a look at the prevention and treatment of estrus disorders.

Illumination factor

Light is one of the main reasons that affect ewes' estrus. Sheep are short-day seasonal estrous animals, the light is shortened, the reproductive function of ewes is excited and exuberant, and ewes are in estrus. On the contrary, prolonged light time will inhibit ewe ewes' estrus.

Nutritional factors

One month before mating, proper supplementary feeding can improve the nutritional level of ewes, especially the supplement of protein feed, which can promote estrus and ovulation and induce ewes to give birth to twins. It is reported that under the condition of poor body condition of ewes, for every 1kg increase in ewe weight before mating, the ovulation rate increases by 2%-2.5% and the lambing rate increases by 1.5%-2%. A more balanced and full-price nutrition level will facilitate early estrus of young ewes, and will also make normal ewes normal estrus and ovulation. If it can not meet its nutritional needs, not only can not normal estrus and ovulation, but also ewe estrus duration and sunny cycle are not normal.

Age factor

The estrus duration of old sheep and young sheep is relatively short, the estrus cycle has no certain regularity, and the estrus symptoms are not obvious. The estrus duration of strong-aged sheep is longer, the estrus has certain regularity, and the estrus symptoms are typical and obvious.