Buckling rate and overhang development at a calving face
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چکیده
منابع مشابه
a study on rate making and required reserves determination in reinsurance market: a simulation
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Calving day and age at first calving in Angus heifers.
Because of difficulties in data collection and analysis, in most breeds there have been limited ways to evaluate fertility in females on a between-herd basis. The objective of this study was to determine the heritabilities (direct and maternal) for CD (calving day) and AFC (age at first calving) in American Angus heifers and to evaluate the potential for using these traits in genetic improvemen...
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G enetic relationships between calving date, calving interval, age at first calving and type traits in beef cattle
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متن کاملBeef heifer development within three calving systems.
A 3-yr study was conducted to evaluate the effects of calving system, weaning age, and postweaning management on growth and reproduction in beef heifers. Heifer calves (n = 676) born in late winter (average birth date = February 7 +/- 9 d) or early spring (average birth date April 3 +/- 10 d) were weaned at 190 or 240 d of age, and heifers born in late spring (average birth date May 29 +/- 10 d...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 2003
ISSN: 0022-1430,1727-5652
DOI: 10.3189/172756503781830476