Test method: judging the degree of estrus of a female animal based on its intimate behavior when approaching a male animal. If the female animal is willing to approach the male animal, bowing and raising the tail, opening the hind limbs, frequently urinating, and matching action are estrus. After estrus or after the end of estrus, the performance is far from the male. When the estrus is forced to draw close, there are often evasive behaviors, such as kicking and biting. At trial, the vets generally use non-seeds with sturdy physique, strong sexual desire, and no arrogance to put on cloths for trials, and economic animals can be observed directly. External observation method: It mainly observes the external performance and mental state of the dam, so as to judge whether it is estrus and estrus. The estrus of female stocks often manifests as uneasiness, love walking, loss of appetite, or even refusal to eat. The genital area is congested and swollen with mucus, which is sensitive to the reaction of the surrounding environment or male animals. Different animals have their own special performances, such as howling cows when estrus, crawling across other cows; sows hooligans; mares head buzzing, labia continuously valgus clitoris; female ass have baboons and other performance. Vaginal examination method: Use a vaginal opening device or a dilatation tube to insert into the vagina of the dam, observe the color and congestion of the vaginal mucous membrane, the relaxation state of the cervix, the size of the opening of the cervix, and the color, secretion, and viscosity of the mucus. Consistency, etc., in order to determine the extent of estrus. The inspection device must be sterilized, and care should be taken when inserting so as not to damage the vaginal wall. Pigs, cattle, sheep and other livestock can try smear crystallization of mucus. The periodic congestiveness of the vagina has a certain relationship with ovulation, and changes in the opening degree of the cervix can be used as a good judgment basis. Rectal examination method: This method is to extend into the rectum of females with the wall of the hand, touching the changes of the ovaries and follicles with fingers across the rectum wall. Touch the size, shape, texture of the ovary, the location, size, elasticity of the follicular development, the thickness of the follicle wall, and whether the follicles are broken, with or without a yellow body. This method can be based on the degree of development of follicles more accurately determine the time of ovulation, and thus scientifically determine the appropriate breeding time, in order to reduce the number of breeding, reduce costs, improve the conception rate. Therefore, rectal examination has been widely used in large-scale livestock breeding. This method requires skilled direct inspection techniques and experience to conduct direct inspections. This method has a high degree of labor intensity. It can be checked only after the technicians without such skills are trained to prevent mistakes. In addition, estrus identification can also be used in breeding stocks, such as reproductive hormone detection, ion selective electrode, bionics, cervical mucus crystallization, color labeling, cervical mucus dialysis, and vaginal epithelial cells. Disposable Medical Supplies,Blood Bag,Toilet Chair,Folding Stretcher Haloxylon Ammodendron Medical Equipment Co., Ltd. , https://www.haloxylonhospital.com