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Showing 1 to 13 of 13 for “"beef heifer"”.
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Regulation of beef heifer productivity by dietary energy and prepubertal administration of bovine somatotropin
Weanling heifer calves (n = 452) grazed tall fescue pastures and were fed a high (H) or low (L) amount of corn supplement during a postweaning treatment period of 136 d. Postweaning gain of heifers receiving L and H was.43 and.62 kg/d, respectively. Heifers receiving H were heavier, and had more …
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Impacts of postweaning dry matter intake classification on beef heifer performance, prebreeding intake, and reproduction
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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The effects of marginal zinc deficiency on biochemical and physiological parameters in beef heifer and Holstein steer calves
To view the abstract, please see the full text of the document.
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A diversified exploration of beef cattle genetics: miRNA and beef bull fertility in beef and dairy female populations
… of sire conception rate (SCR) in dairy cow and beef heifer populations, and the genetic correlation between SCR in both populations. The objectives of the miRNA project were to elucidate differentially expressed (DE) miRNA resulting from changes in phenotypic expression of average daily gain …
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Development of the induced gonadotropin surge mechanism in the prepubertal heifer
… longtitudinal study was performed in prepubertal heifer calves to determine when the individual components of the hypothalamic-pituitary-ovarian axis were capable of functioning. In study 1, the hypothalamus and anterior pituitary of prepubertal dairy heifers were challenged with exogenous …
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Supplemental Trace Minerals (Zn, Cu, and Mn) as Sulfates or Hydroxy Trace Mineral Sources for Beef Heifers
<p>Crossbred heifers (n = 286, 255 ± 4.5 kg initial BW, 295 ± 16.5 d of age) were used over a 2-yr period to determine the effects of mineral source on beef heifer development at 2 locations (n = 71 and n = 72, Fayetteville, blocks 1 and 4; n = 72 in each of 2 breeding groups, Batesville, blocks 2 …
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The Vaginal Microbiome Related to Reproductive Traits in Beef Heifers
… greatest impact on profitability of a commercial beef operation is reproduction. In the human vaginal microbiome, dominance by Lactobacillus is a sign of reproductive health and fitness. In other species (non-human primates and ewes), Lactobacillus is found in low amounts and dominators of these …
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Effect of pulmonary arterial pressure and precipitation on reproductive performance in Angus heifers in south central Wyoming
… is important for profitability of the commercial beef operation. However, fertility is affected by many physiological and environmental factors. Age and weight directly influence puberty in cattle, which is also influenced by nutrition. Many areas in the western United States where beef cattle are …
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The effects of extended-release eprinomectin on heifer performance and fescue toxicity and an evaluation of parasite resistance
… to mitigate fescue toxicity in fall-born beef heifers grazing endophyte-infected tall fescue. Only one extended-release anthelmintic is currently on the market for ruminants and only limited data exist relative to parasite resistance. Therefore, the objective of this experiment was to …
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The effect of weekly handling on the temperament of peri-puberal crossbred beef heifers
… determine the effects of handling peri-puberal heifers for 2 h each week on in-chute behavior, isolation behavior, and the time required for each heifer to leave the testing area; and to determine if the location of the facial hair whorl was associated with any of the behavior scores or social …
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Trace mineral supplementation in cattle: Implications in heifer development, reproductive performance, and fetal programming
… and the effects these minerals may have on heifer development, reproductive success, fetal growth, and long term productivity of beef cattle. Recently data have suggested that organic or chelated trace minerals may improve growth, reproduction, and health traits in ruminants. To evaluate the …
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The effects of resynchronization of estrus using the 5 d CO-Synch + CIDR system in beef heifers
… systems that facilitate timed insemination in beef cattle. However, synchronization systems utilizing a single fixed-time artificial insemination (FTAI) frequently result in 25-40% non-pregnant heifers. The purpose of this study was to determine the effectiveness and define economic parameters …