Effects of Background Procedures and Probiotic Administration on Weight Gain in Growing Heifers

dc.contributor.advisorRunyan, Chase A.
dc.contributor.committeeMemberSalisbury, Micheal W.
dc.contributor.committeeMemberScott, Cody B.
dc.contributor.committeeMemberMangrum, Leah B.
dc.creatorParker, Shaylyn Nell
dc.date.accessioned2017-02-06T15:12:39Z
dc.date.available2017-02-06T15:12:39Z
dc.date.issued2016-12
dc.date.submittedDecember 2016
dc.date.updated2017-02-06T15:12:40Z
dc.description.abstractAngus sired heifers (n=96; initial BW 200 kg) were used to evaluate the effects of background procedures and probiotic administration on weight gain in growing heifers. Heifers were stratified by arrival BW into a 2×2 factorial arrangement where treatments consisted of direct fed microbials (DFM) (yes or no), and High Ruminal Ammonia or Control (HRA or CTR). Heifers were acclimated for 7 d, and treatments were applied for 77 d. Rectal temperatures were taken and any heifer with a temperature >40°C was determined to have pyrexia (fever). Overall, heifers that did not exhibit signs of pyrexia had an ADG of 0.973 kg which translates into a 0.085 kg/d greater ADG (P < 0.05). For the first 21 days (Period A), CTR fed heifers experienced higher ADG than the HRA fed heifers. Heifers fed the HRA diet had a higher ADG than those fed the CTR diet for Period B and C.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2346.1/30602
dc.subjectgrowing cattle
dc.subjectADG
dc.subjectcattle health
dc.subjectdirect fed microbials
dc.subjecturea
dc.subjectDDGS
dc.subjectcattle fever
dc.subjectbackgrounding
dc.titleEffects of Background Procedures and Probiotic Administration on Weight Gain in Growing Heifers
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.departmentAgriculture
thesis.degree.disciplineAnimal Science
thesis.degree.grantorAngelo State University
thesis.degree.levelMasters
thesis.degree.nameMasters of Science

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