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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.
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Showing 141 to 150 of 802 (0.028 seconds)Spelling suggestions: "subject:"[een] BEEF CATTLE"" "subject:"[enn] BEEF CATTLE""
| 141 |
Influence of oral estradiol-17-gbs on serum estrogens in steer calvesMarion, Samuel Landis, 1949- January 1975 (has links)
No description available.
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| 142 |
Bovine liver function as affected by short chain volatile fatty acidsRaymond, Laurence Nichols, 1938- January 1972 (has links)
No description available.
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| 143 |
Determining the nutritional and economic impact of feed waste when wintering beef cows in central AlbertaYaremcio, Barry Unknown Date
No description available.
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| 144 |
Methane emissions and rumen microbial changes in steers fed condensed tannin containing diets under western Canadian conditionsBouchard, Kristen 26 August 2011 (has links)
A study was conducted to determine if sainfoin, a condensed tannin (CT) containing legume, fed to beef cattle as hay or silage during a western Canadian winter would result in a reduction in methane (CH4) emissions without compromising animal performance.
Forty yearling beef steers were fed four diets in a factorial design consisting of two legume forage species (sainfoin or alfalfa) and two preservation methods (silage or hay) over 15 weeks (wks). For each sample wk, animal weight, 24-h CH4 expiration and rumen fluid samples were obtained. Rumen methanogens were characterized using terminal restriction fragment length polymorphisms analysis. Specific bacteria were quantified with real-time polymerase chain reaction analysis.
Sainfoin silage (SS) and sainfoin hay (SH) contained 11.9 and 10.5 mg g-1 of CT respectively and supported an acceptable growth rate for backgrounding steers. A decline (P < 0.05) in enteric CH4 formation could only be detected from SH-fed animals compared to alfalfa hay (AH) fed animals when CH4 was expressed as L d-1 or L kg BW-1. The rumen archaeal community structure of experimental animals remained stable regardless of diet type or sample wk. Structural carbohydrate-fermenting bacteria were suppressed in silage diets. Methanogens were less abundant in the rumen fluid samples of steers fed SS but not SH.
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| 145 |
Methane emissions and rumen microbial changes in steers fed condensed tannin containing diets under western Canadian conditionsBouchard, Kristen 26 August 2011 (has links)
A study was conducted to determine if sainfoin, a condensed tannin (CT) containing legume, fed to beef cattle as hay or silage during a western Canadian winter would result in a reduction in methane (CH4) emissions without compromising animal performance.
Forty yearling beef steers were fed four diets in a factorial design consisting of two legume forage species (sainfoin or alfalfa) and two preservation methods (silage or hay) over 15 weeks (wks). For each sample wk, animal weight, 24-h CH4 expiration and rumen fluid samples were obtained. Rumen methanogens were characterized using terminal restriction fragment length polymorphisms analysis. Specific bacteria were quantified with real-time polymerase chain reaction analysis.
Sainfoin silage (SS) and sainfoin hay (SH) contained 11.9 and 10.5 mg g-1 of CT respectively and supported an acceptable growth rate for backgrounding steers. A decline (P < 0.05) in enteric CH4 formation could only be detected from SH-fed animals compared to alfalfa hay (AH) fed animals when CH4 was expressed as L d-1 or L kg BW-1. The rumen archaeal community structure of experimental animals remained stable regardless of diet type or sample wk. Structural carbohydrate-fermenting bacteria were suppressed in silage diets. Methanogens were less abundant in the rumen fluid samples of steers fed SS but not SH.
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| 146 |
A spatial equilibrium model of the beef industry in the United StatesSohn, Hong Keun January 1970 (has links)
Typescript. / Thesis (Ph. D.)--University of Hawaii, 1970. / Bibliography: leaves [253]-258. / xiii, 258 l graphs, tables, maps
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| 147 |
Feeding Management to Alleviate Heat Load in Feedlot CattleHolt, S. Unknown Date (has links)
No description available.
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| 148 |
Feeding Management to Alleviate Heat Load in Feedlot CattleHolt, S. Unknown Date (has links)
No description available.
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| 149 |
Feeding Management to Alleviate Heat Load in Feedlot CattleHolt, S. Unknown Date (has links)
No description available.
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| 150 |
Feeding Management to Alleviate Heat Load in Feedlot CattleHolt, S. Unknown Date (has links)
No description available.
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