Open Cows in a Beef Cattle Enterprise Managed in a Seasonal Breeding Program? An Appraisal of Their Reproductive Performance Based on Body Fat Reserves
نویسندگان
چکیده
A comparison between two distinct levels of back fat thickness in open cows, females not becoming pregnant during the previous breeding season, was carried out order to evaluate their reproductive performance prior next natural mating a seasonal program. Thirty cows from season were divided evenly by age and (BFT) groups. HBFT (high ≥ 70 mm) LBFT (low ≤ mm), values statistically different groups (P < 0.05). The study into three phases which formation CL follicular dynamics recorded ultrasound progesterone. Also, serial monitoring glucose, urea triglycerides studied. fertile bull previously approved soundness evaluation introduced after third phase remained with herd for 90 days. No differences found dynamics; number animals cycling fertility also similar (80%). Differences high scores BFT. In conclusion, decision keeping must be based on an economical advantage farmer.
منابع مشابه
reflections on taught courses of the iranian ma program in english translation: a mixed-methods study
the issue of curriculum and syllabus evaluation and revision has been in center of attention right from when curriculum came into attention of educational institutions. thus everywhere in the world in educational institutions curricula and syllabi are evaluated and revised based on the goals, the needs, existing content, etc.. in iran any curriculum is designed in a committee of specialists and...
a swot analysis of the english program of a bilingual school in iran
با توجه به جایگاه زبان انگلیسی به عنوان زبانی بین المللی و با در نظر گرفتن این واقعیت که دولت ها و مسئولان آموزش و پرورش در سراسر جهان در حال حاضر احساس نیاز به ایجاد موقعیتی برای کودکان جهت یاد گیری زبان انگلیسی درسنین پایین در مدارس دو زبانه می کنند، تحقیق حاضر با استفاده از مدل swot (قوت ها، ضعف ها، فرصتها و تهدیدها) سعی در ارزیابی مدرسه ای دو زبانه در ایران را دارد. جهت انجام این تحقیق در م...
15 صفحه اولImpact of body condition change post-breeding on reproductive performance of beef cows
Body condition score (BCS) is a commonly used tool for evaluating the nutritional status of beef cows. Good nutritional status of beef cows is one of the essential components for improved reproductive performance. The objective was to evaluate the impact of change in body condition during 2 months after breeding on the AI pregnancy success in beef cows. Angus cross beef cows (N = 2571) from 11 ...
متن کاملa study on rate making and required reserves determination in reinsurance market: a simulation
reinsurance is widely recognized as an important instrument in the capital management of an insurance company as well as its risk management tool. this thesis is intended to determine premium rates for different types of reinsurance policies. also, given the fact that the reinsurance coverage of every company depends upon its reserves, so different types of reserves and the method of their calc...
Genetics of reproductive performance in seasonal calving beef cows and its association with performance traits.
Due primarily to a lack of phenotypic data, little research has been undertaken on the genetics of reproductive performance in beef cattle. The objective of this study was to quantify, using data from the Irish national cattle herd, the contribution of additive genetics to phenotypic differences in reproductive performance in beef cattle and to investigate whether routinely available early pred...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Open Journal of Veterinary Medicine
سال: 2022
ISSN: ['2165-3364', '2165-3356']
DOI: https://doi.org/10.4236/ojvm.2022.125005