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Record identifier : 568116
Personal Name - Primary Intelectual Responsibility : Dick, Karianne J
Title and statement of responsibility : Effects of direct-fed microbials on performance and digestive tract morphology of neo-natel/transition Holstein bull calves [Thesis]
Publication, Distribution,Etc. : The University of Arizona, 2006
Language of the Item : eng
Dissertation of thesis details and type of degree : M.S.
Body granting the degree : , The University of Arizona
Summary or Abstract : Calf diarrhea or scours is one of the most significant and costly problems dairy producers face on a daily basis. A study was designed and conducted to evaluate the effects of direct-fed microbials on the performance and digestive tract morphology of neo-natal/transition Holstein bull calves. Treatments consisted of a control (n = 21) and a treatment (n = 22) of direct-fed microbial (5 x 10 8 cfu) supplemented daily. Samples of the rumen, duodenum, and ileum were harvested at the time of slaughter and examined for differences in morphology. Although the direct-fed microbial did not effect performance, it positively effected the ruminal papillae as well as the ileal villi. These data indicate that direct-fed microbials may increase the nutrient absorptive surface area of the rumen and ileum, resulting in a healthier digestive tract.
Topical Name Used as Subject : Livestock
Information of biblio record : TL
 
 
 
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