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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Effect of Post-extraction Algal Residue Supplementation on the Therumen Microbiome of Steers Consuming Low-quality Forage

McCann, Joshua C 16 December 2013 (has links)
The rumen microbiome is a dynamic environment consisting of bacteria, protist, and fungi responsible for fiber degradation. Advances in molecular techniques have enabled description of bacterial microbiome via pyrosequencing. Cattle consuming low-quality forage are often supplemented with protein to increase forage intake and digestion, but effect on the rumen bacterial community is unknown. Thus, increasing post-extraction algal residue (PEAR) and cottonseed meal (CSM) supplementation was provided to steers consuming oat straw to observe the rumen microbiome within the liquid and solid fraction. Weighted UniFrac analysis indicated different fraction-associated communities with greater similarity across treatments in the solid fraction. Bacteroidetes was the predominant phyla detected in all samples (>65%). Within Bacteroidetes, Prevotella was the most abundant genus. In the liquid fraction, Lachnospiraceae, Ruminococcaceae, and Clostridiaceae increased with PEAR provision (P < 0.05). Similar proportions of bacteria between unsupplemented control and CSM supplemented steers indicate factors other than N supply may impact ruminal bacteria populations. A second experiment evaluated the effect of supplemental CSM or dried distillers’ grain (DDG) for Brahman steers consuming rice straw. Total digestible OM intake and total tract OM digestion increased linearly with additional CSM and DDG provision (P < 0.01). Provision of CSM increased ruminal ammonia linearly (P < 0.01), but DDG supplementation resulted in a quadratic response (P = 0.02). Overall, protein supplementation may increase LQF utilization via changes in the rumen microbiome.
32

Rumen Methanogenic Ecology under Different Diets and Cattle Feed Efficiency

Zhou, Mi Unknown Date
No description available.
33

Molecular characterization of the ruminal bacterial species Selenomonas ruminantium : a thesis submitted to the University of Adelaide for the degree of Doctor of Philosophy / by Zhang Ning

Zhang, Ning, 1965- January 1992 (has links)
Includes two of author's articles in pocket inside back cover. / Includes bibliographical references (leaves 133-150) / xii, 150 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Diversity in the ruminal Gram negative bacterial species Selenomonas ruminantium has been investigated by DNA fingerprinting, DNA homology and plasmid profile analysis. Twenty different isolates from the sheep rumen were classified morphologically and by carbon source utilization. / Thesis (Ph.D.)--University of Adelaide, Dept. of Animal Science, Waite Agricultural Research Institute, 1993
34

Immune responses of sheep to rumen ciliates and the survival and activity of antibodies in the rumen fluid /

Gnanasampanthan, Gnanapragasam. January 1993 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, Dept. of Animal Sciences, 1994. / Videorecording has title: Effect of antibodies on the motility of rumen ciliates. Includes bibliographical references (leaves 197-259).
35

Comparative studies of oxalyl-CoA decarboxylase produced by soil and ruminal bacteria /

Bottrill, Stephen. January 1999 (has links) (PDF)
Thesis (M.Ag. Sc.) -- University of Adelaide, Dept. of Animal Science, 2000. / Bibliography: leaves 139-167.
36

Isolation and characterization of Pseudobutyrivibrio ruminis gene promoters /

Schoep, Tobias Delavilla. January 2004 (has links)
Thesis (Ph.D.)--Murdoch University, 2004. / Thesis submitted to the Division of Science and Engineering. Bibliography: leaves 225-240.
37

Molecular characterization of the ruminal bacterial species Selenomonas ruminantium : a thesis submitted to the University of Adelaide for the degree of Doctor of Philosophy /

Zhang, Ning, January 1992 (has links) (PDF)
Thesis (Ph.D.)--University of Adelaide, Dept. of Animal Science, Waite Agricultural Research Institute, 1993. / Includes two of author's articles in pocket inside back cover. Includes bibliographical references (leaves 133-150).
38

Biotransformation of 2,4,6-trinitrotoluene by ruminal organisms /

De Lorme, Marthah J. M. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2008. / Printout. Includes bibliographical references. Also available on the World Wide Web.
39

Protein preservation and rumen degradability of ensiled forage, previously treated with microwave or steam heat, formic acid, or anhydrous ammonia /

Stieve, Dale Edward M., January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 97-106). Also available via the Internet.
40

Effect of nonstructural carbohydrates and rumen undegradable protein on intake, growth, and body condition of dairy heifers /

Tomlinson, Dana J., January 1990 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. No film copy made for this title. Includes bibliographical references (leaves 149-165). Also available via the Internet.

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