Výsledky vyhledávání

Akademický článek

Efficacy of selenium supplementation methods in California yearling beef cattle and resulting effect on weight gain

Autor: J Davy, L Forero, T Tucker, C Mayo, D Drake, J Maas, J Oltjen

Publikováno v: California Agriculture, Vol 70, Iss 4 (2016)

Selenium (Se) deficiency occurs commonly in California grazing cattle and has been associated with reduced immune function and, in some studies, reduced weight gain. Multiple methods of supplementing Se are available, but little research has compared

Externí odkaz: https://doaj.org/article/0902c9fef7404a6c93e0d8d08e18e001

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Akademický článek

Fecal pats help to predict nutrient intake by cattle during summer on California's annual rangelands

Autor: A Jinks, J Oltjen, P Robinson, C Calvert

Publikováno v: California Agriculture, Vol 64, Iss 2 (2010)

Near-infrared spectroscopy (NIRS) of fecal samples has been used to predict the crude protein and digestible organic matter of forages consumed by grazing animals. However, for NIRS predictions to be accurate, the equation used must be based on sampl

Externí odkaz: https://doaj.org/article/9d4a3a9f01084791873e7de3afb32948

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Akademický článek

Advanced information systems to improve livestock management

Autor: J Oltjen

Publikováno v: California Agriculture, Vol 54, Iss 4 (2000)

California Agriculture - All Issues

Externí odkaz: https://doaj.org/article/aa406cfcc6304e6dbef80397b2eef0ea

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Characterization of Fecal Shiga Toxin-Producing Escherichia coli from Post-Weaning Cattle

Autor: F. Yang, X. Yang, J. Oltjen, S. Klopotek

Publikováno v: Meat and Muscle Biology. 3:147-147

ObjectivesShiga toxin-producing E. coli (STEC), which are often found in the intestinal tract of cattle and in their fecal matter, are among the most common foodborne pathogens of concern in beef production. Contamination from the fecal matter, both

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20fa0bd074908097c16b22bf68e0e48b
https://doi.org/10.22175/mmb2019.0147

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