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Observing the reproductive cycle of cattle with B ultrasound

Observing the reproductive cycle of cattle with B ultrasound Reproductive Physiology of Cows (1) Observe the development of cow’s sexual function with B ultrasound (1) Early estrus. The period when cows begin to estrus and have reproductive functions. When the cow reaches first estrus The body weight is 30%-40% of the adult body weight, while the beef cattle is 45%-50%. In fact, there are many factors that affect the cow’s puberty, including heredity and environment. (2) Sexual maturity. Refers to the cow’s reproductive organs are fully developed, have coordinated reproductive endocrine, show complete estrus symptoms, discharge fertilized eggs, and have reproductive functions. This period is called sexual maturity. However, cows should not be bred when they are at the sexual maturity stage, because the follicle development on the ovary and the cow’s endocrine are not very regular and stable during this period, and the eggs produced are not well developed and of average quality. (3) Body maturity. Refers to the period when the reproductive organs of the cow mature and begin to produce reproductive cells with normal reproductive functions. After the cow has grown and developed to this period, it can be bred when the estrus signs appear, and the cow will enter the reproductive stage after fertilization. The maturity period is also called the age of fit or mating age. The mating age of cows is based on body weight. When the body weight reaches 70% of adult body weight, mating can be started without affecting the growth and development of the cow and fetus. Growing cows generally have their first estrus before 12 months of age, reach sexual maturity at 12-14 months, and reach physical maturity at 15-16 months. They can be bred when they reach maturity and their body weight reaches 70% of the cow’s body weight. (2) Observe the estrus of cattle with B ultrasound The concept of estrus refers to a series of physiological and behavioral changes in cows that occur after sexual maturity, under the regulation of reproductive hormones, along with the development of follicles on the ovary. 2. Estrus includes three changes (1) The cow’s mental excitement, uneasy singing, decreased appetite, decreased lactation, frequent urination, and tail lift or shaking. (2) Courtship performance. All kinds of cows have a strong desire to mate and take the initiative when they come to estrus orgasm. Zhengzhou Boxiang Lainiu uses B-ultrasound training hotline 15937121531



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