Application of Progesterone Measurement for Age and Body Weight at Puberty, and Postpartum Anestrus in Korean Native Cattle.
نویسندگان
چکیده
منابع مشابه
Understanding Puberty and Postpartum Anestrus
Managerial and economic efficiencies of cattle reproduction systems that are seasonal in nature are most likely to benefit from having a compact calving season. Effective replacement heifer development is a critical segment of the integrated management program in an efficient beef cow production system. The replacement heifer represents the future profitability and genetic improvement of the co...
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although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولUnderstanding Postpartum Anestrus and Puberty in the Beef Female
Management of the beef female for reproductive success, both before and after puberty, plays a major role in determining the efficiency of any beef production system. Two of the most critical physiological periods associated with female reproduction are the prepubertal and postpartum periods. Therefore, a general understanding of the processes that underlie developmental changes in the heifer d...
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ساخت الکترودهاِی اصلاح شده ِیکِی از چالشهاِی همِیشگِی در دانش شیمِی بوِیژه شیمِی تجزیه مِی باشد ،که با در نظر گرفتن سادگِی ساخت، کاربردی بودن و ارزان بودن روش مِی توان به باارزش بودن چنِین سنسورهاِی پِی برد.آنچه که در ادامه آورده شده به ساخت و کاربرد الکترودهاِی اصلاح شده با استفاده از نانو ذرات در اندازه گِیرِی ولتامترِی آهن وکادمِیم اشاره دارد. کار اول اختصاص دارد به ساخت الکترود خمِیر کربن اصلاح شده با لِیگاند داِ...
15 صفحه اولPhysiological mechanisms controlling anestrus and infertility in postpartum beef cattle.
Postpartum infertility is caused by four factors: general infertility, lack of uterine involution, short estrous cycles and anestrus. The general infertility component is common to any estrous cycle and reduces potential fertility by 20 to 30%. Incomplete uterine involution prevents fertilization during the first 20 d after calving but is not related to anestrus. Short estrous cycles prevent fe...
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ژورنال
عنوان ژورنال: Journal of Veterinary Medical Science
سال: 2001
ISSN: 0916-7250,1347-7439
DOI: 10.1292/jvms.63.1287