Mostrando 1,621 - 1,640 Resultados de 11,636 Para Buscar '"Cowes"', tiempo de consulta: 0.17s Limitar resultados
  1. 1621
    “…Growth of the preovulatory follicle was controlled to obtain cows that ovulated a small follicle (SF) and subsequently bore a small corpus luteum (CL; SF-SCL) or a large follicle (LF) and large CL (LF-LCL). …”
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  2. 1622
    “…The purpose of this study was to verify the ability of our metabolomics approaches to identify metabolites in the biofluids of dairy cows.…”
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  3. 1623
    “…Thus, increasing the MY per animal and decreasing the feed cost can lead to economic gains, so the objective of this study was to evaluate the effect of dry period length (DPL), days open (DO), and days in milk (DIM) on the productivity and profitability of dairy cow farms. MATERIALS AND METHODS: Data used in this study were taken from 3095 lactation records of Friesian dairy cows of private and governmental sectors. …”
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  4. 1624
    “…Cow’s milk allergy (CMA) and gastro-esophageal reflux disease (GERD) may manifest with similar symptoms in infants making the diagnosis challenging. …”
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  5. 1625
    “…Here, we investigate the metabolism of ZEN in the reticulorumen of dairy cows. To this end, rumen-fistulated non-lactating Holstein Friesian cows (n = 4) received a one-time oral dose of ZEN (5 mg ZEN in 500 g concentrate feed) and the concentrations of ZEN and ZEN metabolites were measured in free rumen liquid from three reticulorumen locations (reticulum, ventral sac and dorsal mat layer) during a 34-h period. …”
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  6. 1626
    “…Yet, little is known about the economic consequences of improvements in FAW, especially in cow-calf operations. This study contributes to the literature by investigating the relationship between farm profitability and improved FAW measure in terms of increased space allowance in Swedish cow-calf operations. …”
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  7. 1627
  8. 1628
    “…METHODS: The study material consisted of high-yielding Holstein-Friesian cows. In total, 473 cows were examined. According to the parity, cows were divided into four groups: primiparous (P), and multiparous in the second (M2), in the third (M3), and in subsequent lactations (M4). …”
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  9. 1629
    “…Despite its importance, it is not fully understood how variation in the ruminal bacteria community composition influences dry matter intake (DMI), milk yield and ruminal fermentative parameters in dairy cows, especially during freshening period. Here, we hypothesized that during early lactation, high DMI cows having a different ruminal microbiota than low DMI cows, and that this difference persists over time. …”
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  10. 1630
    “…Considering the recently described importance of human Q fever in Greece, we aimed at providing the first comprehensive direct evidence of C. burnetii in dairy cows in Greece, including the genetic characterization of strains. …”
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  11. 1631
    “…SIMPLE SUMMARY: Heat stress (HS) of dairy cows affects milk protein synthesis partially due to a decline in appetite and dry matter intake (DMI). …”
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  12. 1632
    “…ABSTRACT: Owing to increasing global temperatures, heat stress is a major problem affecting dairy cows, and abnormal metabolic responses during heat stress likely influence dairy cow immunity. …”
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  13. 1633
  14. 1634
    “…Investigations were carried out on 224 cows represented by two breeds—Jersey (n = 80) and Polish Holstein-Friesian (n = 144). …”
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  15. 1635
  16. 1636
    “…OBJECTIVE: This study was focused on the estimation of parameters of Wood’s model and description of the lactation curve using the cows which were lactated over 24 months on the first lactation. …”
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  17. 1637
  18. 1638
    “…The average relative prediction error of the milk yield of each cow is about 18% of daily production, and only 2% of the total milk production.…”
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  19. 1639
  20. 1640
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