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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
2
|
| pubmed:dateCreated |
1994-5-17
|
| pubmed:abstractText |
The objectives of these experiments were to examine whether N retention and feedlot performance by steers administered estradiol 17-beta (E2) alone (metabolism study) or in combination with trenbolone acetate (TAB; feedlot study) could be enhanced by increasing dietary ruminal escape protein. For the metabolism study, 16 Angus steers (average weight = 308 +/- 5 kg) were used in a randomized block design experiment having a 2 x 4 factorial arrangement of treatments. Main factors were E2 administration and supplemental CP source. Steers were fed diets based on corn silage and corn (60:30 DM basis) and were supplemented with urea or three combinations of soybean meal (SBM) and feathermeal (Fth). Combinations and SBM and Fth (SBM:Fth) provided 75:25, 50:50, and 25:75 of supplemental CP on a N basis. Estradiol 17-beta increased (P < .05) N retention and decreased (P < .05) plasma urea N concentrations. Total tract N digestion decreased linearly (P < .05) as the proportion of Fth in the diet increased. However, N retention increased linearly (P < .05) with increased Fth. A CP source x E2 interaction (P < .05) was observed for N retention because retention increased linearly with increasing dietary Fth in cattle receiving E2 but was unaffected (P > .05) in control steers. A growth study was conducted using 128 crossbred steers (400 +/- 19 kg) that received no implant or a combination of E2 (Synovex) and TBA (Finaplix-S). Steers were fed diets containing 75% high-moisture corn, 15% corn silage, and 10% supplement (DM basis) for 84 d (heavy replicate) or 124 d (light replicate).(ABSTRACT TRUNCATED AT 250 WORDS)
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| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Anabolic Agents,
http://linkedlifedata.com/resource/pubmed/chemical/Dietary Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Drug Implants,
http://linkedlifedata.com/resource/pubmed/chemical/Estradiol,
http://linkedlifedata.com/resource/pubmed/chemical/Nitrogen,
http://linkedlifedata.com/resource/pubmed/chemical/Trenbolone Acetate,
http://linkedlifedata.com/resource/pubmed/chemical/Urea
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Feb
|
| pubmed:issn |
0021-8812
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| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
72
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
515-22
|
| pubmed:dateRevised |
2011-11-17
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| pubmed:meshHeading |
pubmed-meshheading:8157539-Anabolic Agents,
pubmed-meshheading:8157539-Animal Feed,
pubmed-meshheading:8157539-Animals,
pubmed-meshheading:8157539-Blood Urea Nitrogen,
pubmed-meshheading:8157539-Cattle,
pubmed-meshheading:8157539-Dietary Proteins,
pubmed-meshheading:8157539-Drug Implants,
pubmed-meshheading:8157539-Drug Therapy, Combination,
pubmed-meshheading:8157539-Estradiol,
pubmed-meshheading:8157539-Feathers,
pubmed-meshheading:8157539-Food, Fortified,
pubmed-meshheading:8157539-Injections, Subcutaneous,
pubmed-meshheading:8157539-Male,
pubmed-meshheading:8157539-Meat,
pubmed-meshheading:8157539-Nitrogen,
pubmed-meshheading:8157539-Random Allocation,
pubmed-meshheading:8157539-Soybeans,
pubmed-meshheading:8157539-Trenbolone Acetate,
pubmed-meshheading:8157539-Urea,
pubmed-meshheading:8157539-Zea mays
|
| pubmed:year |
1994
|
| pubmed:articleTitle |
Effects of anabolic steroids on nitrogen metabolism and growth of steers fed corn silage and corn-based diets supplemented with urea or combinations of soybean meal and feathermeal.
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| pubmed:affiliation |
Department of Animal Sciences, Purdue University, West Lafayette, IN 47907.
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| pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|