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    Question

    The combination of physiological events which take place

    starting with estrus (heat) and ending with the next heat is termed estrous cycle. The estrous cycle of cow range from………………….
    A 15-18 days Correct Answer Incorrect Answer
    B 10 days Correct Answer Incorrect Answer
    C 19-21 days Correct Answer Incorrect Answer
    D 24-30 days Correct Answer Incorrect Answer

    Solution

    The combination of physiological events which take place starting with estrus (heat) and ending with the next heat is termed estrous cycle. The estrous cycle of cow range from 19 to 21 days. The whole estrous cycle may be divided into 4 phases viz., estrus, metestrus, diestrus and proestrus.

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