Effect of stair-step nutritional programming on ovarian development in replacement beef heifers
نویسندگان
چکیده
منابع مشابه
Effect of postweaning diet on ovarian development and fertility in replacement beef heifers.
Programs for developing replacement heifers are designed for heifers to calve at 2 yr of age and to extend their stayability in the herd and minimize feed cost. The experimental objective was to determine whether developing prepubertal heifers on less dietary energy and to a BW of 55% rather than 65% of mature BW at 14 mo of age would compromise ovarian development and reduce fertility. In a 3-...
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15 صفحه اولEffects of stair-step nutrition and trace mineral supplementation on attainment of puberty in beef heifers of three sire breeds.
A study was conducted to evaluate the influence of nutrition and sire breed on age at puberty and first lactation milk yield in crossbred beef heifers. After weaning, 208 heifers sired by Hereford, Limousin, or Piedmontese bulls were assigned to either a control (CG) or stair-step gain (SSG) dietary regimen plus a mineral supplement with or without Cu, Zn, and Mn top-dressed onto the feed. Heif...
متن کاملEffect of postweaning diet on ovarian development and fertility in replacement beef heifers1
Programs for developing replacement heifers are designed for heifers to calve at 2 yr of age and to extend their stayability in the herd and minimize feed cost. The experimental objective was to determine whether developing prepubertal heifers on less dietary energy and to a BW of 55% rather than 65% of mature BW at 14 mo of age would compromise ovarian development and reduce fertility. In a 3-...
متن کاملNutritional Regulation of Precocious Puberty in Beef Heifers
Age at puberty has an important impact on the productive, reproductive and economic efficiency of female cattle. The occurrence of this physiological event implies an adequate growth rate and development of the animal that supports the endocrinological mechanisms that lead to sexual maturity. Age at puberty and first conception will influence lifetime productivity of cattle, reflected in the nu...
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ژورنال
عنوان ژورنال: Translational Animal Science
سال: 2020
ISSN: 2573-2102
DOI: 10.1093/tas/txaa092