After the ewe reaches sexual maturity, it begins to exhibit a periodical sexual behavior. The interval from the beginning of the last oestrus to the beginning of the next oestrus is called the oestrus cycle. The estrus cycle of sheep averaged 17 days (14-21 days), and the goat averaged 21 days (18-24 days). The estrus cycle is different due to variety, age, and nutritional status. The estrus cycle of old sheep is long and the young sheep are short. The estrus cycle of sheep with poor nutrition is long and the sheep with good nutrition is short. Snack Food,Snack Food Spicy,Food Healthy Snacks,Food Heart Rice Snack Zhejiang Shanying Trading Co.,Ltd. , https://www.shanyingtrading.com