Effect of Humic/Fulvic Acid in Beef Cattle Finishing Diets on Animal Performance, Ruminal Ammonia and Serum Urea Nitrogen Concentration

Autor:	C. P. McMurphy, C. R. Bailey, M. A. Harris, N. K. Chirase, R. M. Ibrahim, Glenn C Duff, S. R. Sanders
Rok vydání:	2009
Předmět:	General Veterinary Chemistry Monensin Fulvic acid chemistry.chemical_element Beef cattle Nitrogen Serum urea chemistry.chemical_compound Ammonia Rumen Animal science Agronomy Urea Animal Science and Zoology
Zdroj:	Journal of Applied Animal Research. 35:97-100
ISSN:	0974-1844 0971-2119
DOI:	10.1080/09712119.2009.9706995
Popis:	McMurphy, C.P., Duff, G.C., Harris, M.A., Sanders, S.R., Chirase, N.K., Bailey, C.R. and Ibrahim, R.M. 2009. Effect of humic/fulvic acid in beef cattle finishing diets on animal performance, ruminal ammonia and serum urea nitrogen concentration. J. Appl. Anim. Res., 35: 97–100. This study was designed to investigate the effects of a humate supplement on rumen ammonia N (RAN), serum urea N (SUN) and live performance in beef cattle finishing diets. Twenty-four English cross steers (BW 432±5 kg) were stratified by weight, randomly assigned to individual pens and fed one of the four diets, containing 0 (control), 0.5, 1.0 or 1.5% humic/fulvic acid, for 56 d. Control diets contained 33.3 mg/kg monensin. Steers were weighed at d 0, 28 and 56. Blood (jugular veni-puncture) samples and rumen (esophageal tube) samples were taken prior to feeding on d 0 and there after prior to and 4 h post feeding on d 28 and 56. Rumen fluid pH was determined immediately, acidified with HCl and stored (-20C) for subsequen...
Databáze:	OpenAIRE
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