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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4
|
| pubmed:dateCreated |
1993-1-11
|
| pubmed:abstractText |
Possible alteration of toxicity of endophyte-infected tall fescue by ruminal fermentation was studied using 28 Harlan Sprague-Dawley rats (avg. initial wt., 141 g). These were assigned randomly to one of four treatments in a 2*2 factorial consisting of a 14-day growth period with weights and feed consumption data determined on days 0, 5, 10 and 14. Treatments were: endophyte-infected Kentucky-31 tall fescue seed (E+) or endophyte free Johnstone tall fescue seed (E-) that was incubated for 0 (NON) or 24 hours (INC) with rumen fluid collected from a 290-kg cannulated steer fed a diet containing 37% endophyte-infected tall fescue hay. Diets consisted of 50% lab chow, 39% fescue seed and 11% rumen contents (air-dry basis). Alkaloid content (N-acetyl plus N-formyl loline) for the four diets were 2540, 2680, 0, and 0 micrograms/g for E+NON, E+INC, E-NON, and E-INC diets, respectively. E- treatments gained faster, consumed more feed and converted feed more efficiently (P < .05) than did E+ fed groups. No difference in feed intake was observed within E+ treatments, however, the E+INC diet gained faster (P < .05) and converted feed more efficiently (P < .05) than did E+NON fed rats (2.56 vs 1.96 g/d and 5.94 vs 7.51 g of feed/g of gain for gain and feed conversion, respectively). Including endophyte-infected seed in rat diets depressed performance (ie. intake, gain and feed efficiency). This depression was partially alleviated by a 24-hour incubation with rumen fluid contents suggesting that toxicity of endophyte-infected tall fescue is lessened due to rumen microbial action.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:issn |
0148-0545
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
15
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
351-64
|
| pubmed:dateRevised |
2003-11-14
|
| pubmed:meshHeading |
pubmed-meshheading:1459045-Acremonium,
pubmed-meshheading:1459045-Alkaline Phosphatase,
pubmed-meshheading:1459045-Alkaloids,
pubmed-meshheading:1459045-Animals,
pubmed-meshheading:1459045-Biological Assay,
pubmed-meshheading:1459045-Body Weight,
pubmed-meshheading:1459045-Eating,
pubmed-meshheading:1459045-Fermentation,
pubmed-meshheading:1459045-Male,
pubmed-meshheading:1459045-Poaceae,
pubmed-meshheading:1459045-Rats,
pubmed-meshheading:1459045-Rats, Sprague-Dawley,
pubmed-meshheading:1459045-Rumen
|
| pubmed:year |
1992
|
| pubmed:articleTitle |
Influence of rumen fermentation on response to endophyte-infected tall fescue seed measured by a rat bioassay.
|
| pubmed:affiliation |
Department of Animal Science, University of Kentucky, Lexington 40546-0215.
|
| pubmed:publicationType |
Journal Article
|