| Autor: |
J. P. Fontenot, G. Scaglia, Rena L. Stewart, G.E. Rottinghaus, W. S. Swecker, O.A. Abaye, M. McCann, H.T. Boland |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
The Professional Animal Scientist. 24:578-587 |
| ISSN: |
1080-7446 |
| DOI: |
10.15232/s1080-7446(15)30908-6 |
| Popis: |
During 2 consecutive grazing seasons, DMI of steers grazing ‘Kentucky-31’endophyte (Neotyphodium coenophialum-infected tall fescue (E+; Festuca arundinacea Shreb.), ‘Kentucky-31’endophyte-free tall fescue (E-), and ‘Quantum’tall fescue infected with endophyte AR542, a non-ergot alkaloid-producing strain (Quantum) was estimated using alkanes as markers. The appearance of ergovaline and lysergic acid amide (LSA) also was quantified in forage and ruminal fluid of steers grazing these forages. Estimates of DMI did not differ(P= 0.88) when based on fecal samples collected at 0800 h, 1700 h, or a composite of the 2 sampling times. Estimation of DMI using hand-plucked samples tended to be greater (P = 0.06) than whole-plant clipped samples. Estimated DMI was greater (P |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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