Effects of Humic/Fulvic Acid on Rumen Fermentation in Holstein Steers

Persistent Link:
http://hdl.handle.net/10150/193335
Title:
Effects of Humic/Fulvic Acid on Rumen Fermentation in Holstein Steers
Author:
McMurphy, Casey Paul
Issue Date:
2007
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Six ruminally fistulated steers (average BW 317 kg) were used in a 5 X 5 + 1 Latin Square design to determine effects of humic/fulvic acid (HFA) on serum urea nitrogen (SUN), rumen pH, rumen ammonia nitrogen (RAN), and rumen VFA production in Holstein steers. Treatments included a control (0%), 0.5, 1.0 or 1.5% HFA, and a diet containing monensin (33 mg/kg). A quadratic feed intake response was observed; with intake lowest for 0.5 and 1.0 and highest for 1.5 relative to control steers. No treatment x time interaction was observed for RAN, pH, SUN, total VFA or individual VFA. No treatment differences were observed for total VFA concentrations (mM), or for molar proportion of acetate, propionate, butyrate or valerate. A quadratic response was observed for butyrate and isovalerate. However, HFA does not alter rumen fermentation in the same mode of action as monensin.
Type:
text; Electronic Thesis
Keywords:
Humates; Feed additives; serum urea nitrogen; rumen ammonia nitrogen; volatile fatty acids
Degree Name:
MS
Degree Level:
masters
Degree Program:
Animal Sciences; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Duff, Glenn C.
Committee Chair:
Duff, Glenn C.

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleEffects of Humic/Fulvic Acid on Rumen Fermentation in Holstein Steersen_US
dc.creatorMcMurphy, Casey Paulen_US
dc.contributor.authorMcMurphy, Casey Paulen_US
dc.date.issued2007en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractSix ruminally fistulated steers (average BW 317 kg) were used in a 5 X 5 + 1 Latin Square design to determine effects of humic/fulvic acid (HFA) on serum urea nitrogen (SUN), rumen pH, rumen ammonia nitrogen (RAN), and rumen VFA production in Holstein steers. Treatments included a control (0%), 0.5, 1.0 or 1.5% HFA, and a diet containing monensin (33 mg/kg). A quadratic feed intake response was observed; with intake lowest for 0.5 and 1.0 and highest for 1.5 relative to control steers. No treatment x time interaction was observed for RAN, pH, SUN, total VFA or individual VFA. No treatment differences were observed for total VFA concentrations (mM), or for molar proportion of acetate, propionate, butyrate or valerate. A quadratic response was observed for butyrate and isovalerate. However, HFA does not alter rumen fermentation in the same mode of action as monensin.en_US
dc.typetexten_US
dc.typeElectronic Thesisen_US
dc.subjectHumatesen_US
dc.subjectFeed additivesen_US
dc.subjectserum urea nitrogenen_US
dc.subjectrumen ammonia nitrogenen_US
dc.subjectvolatile fatty acidsen_US
thesis.degree.nameMSen_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineAnimal Sciencesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorDuff, Glenn C.en_US
dc.contributor.chairDuff, Glenn C.en_US
dc.identifier.proquest2266en_US
dc.identifier.oclc659748108en_US
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