دورية أكاديمية
Weight at conception and gestational gains in the efficiency of beef cows and progeny performance
| العنوان: | Weight at conception and gestational gains in the efficiency of beef cows and progeny performance |
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| المؤلفون: | RICARDO Z. VAZ, JOSÉ FERNANDO P. LOBATO, JOÃO RESTLE, PABLO T. COSTA, LIDIANE ELOY, JOÃO LUIZ B. COSTA |
| المصدر: | Anais da Academia Brasileira de Ciências, Vol 94, Iss 1 (2022) |
| بيانات النشر: | Academia Brasileira de Ciências, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Science |
| مصطلحات موضوعية: | foetal programming, reproduction, feed restriction, productivity, Science |
| الوصف: | Abstract The aim of this study was to evaluate the effects of conception weight and gestational weight gain on performance and productive efficiency in beef cows and their calves. Eighty-eight primiparous, three-year old Braford females were used, divided according to weight at conception and gestational performance (High and Low): cows with a low conception weight and low gestational weight gain (LL), cows with low conception weight and high gestational weight gain (LH), cows with high conception weight and low gestational weight gain (HL), and cows with high conception weight and high gestational weight gain (HH). At calving, HH cows were heavier than LH and HL and these were heavier than LL cows. Male calves born to HH cows were superior in body weight to those born to LL cows at 150, 210 and 365 days. Female calves born to HH, HL or LH cows were superior to those born to LL cows in pregnancy at 14 months of age. The LL and HL cows were more efficient in calf production. Actual fertility was influenced by the nutritional level of the herd, where HH cows were superior than LL cows. Better cow herd nutrition increases the development and performance of the progeny. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1678-2690 0001-3765 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000101302&tlng=en; https://doaj.org/toc/1678-2690 |
| DOI: | 10.1590/0001-3765202220191280 |
| URL الوصول: | https://doaj.org/article/0d87e34fe5d24a46bb750a8d7e8329ed |
| رقم الأكسشن: | edsdoj.0d87e34fe5d24a46bb750a8d7e8329ed |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16782690 00013765 |
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| DOI: | 10.1590/0001-3765202220191280 |