| 000 | 02424nab a2200337 a 4500 | ||
|---|---|---|---|
| 003 | AR-ReUNN | ||
| 005 | 20260702002257.0 | ||
| 008 | 260630s1997 xxc|||||||||||||||||eng | ||
| 041 | 0 |
_aeng _afre |
|
| 100 | 1 |
_aMccaughey, W. P. _9125527 |
|
| 700 | 1 |
_aWittenberg, K. _9125528 |
|
| 700 | 1 |
_aCorrigan, D. _9125529 |
|
| 245 | 1 | 0 | _aMethane production by steers on pasture / W. P. McCaughey; K. Wittenberg; D. Corrigan |
| 264 | 1 |
_aOttawa _bAgricultural Institute of Canada _c1997 |
|
| 300 | _a6 p. | ||
| 500 | _aSeparata: Can J An Scs Ottawa : Agricultural Institute of Canada. | ||
| 520 | _aAbstract In order to determine the quantity of methane (CH4) produced by steers on pasture, 16 steers with a mean weight of 356 +/- 25 kg were randomly selected from a larger group of cattle (n = 48) to evaluate the effects of grazing management and monensin controlled release capsule (CRC) administration on ruminal CH4 production using the sulphur hexafluoride (SF6) tracer-gas technique. Pasture management treatments consisted of two grazing systems (continuous stocking or 10-paddock rotational stocking) at each of two stocking rates (low, 1.1 steer ha-1 or high, 2.2 steers ha-1) with two replications of each pasture treatment. Half of the animals on each pasture treatment were administered a monensin CRC delivering 270 mg d-1, and untreated animals served as controls. During the 140-d grazing season, one steer from each treatment-replicate combination was sampled to determine daily intake and CH4 production on four occasions. The chemical composition of diets differed between grazing management treatments and sampling periods. Voluntary intake and CH4 production, adjusted for differences in body weight, were unaffected by grazing management, sampling period or by monensin CRC administration and averaged 0.69 +/- 0.1 L kg BW-1 d-1 across all grazing management treatments. The energy lost through eructation of CH4 averaged 4.5 +/- 1.4% of gross energy intake. | ||
| 650 | 4 |
_aMetano _9116974 |
|
| 650 | 4 |
_aProducción _94624 |
|
| 650 | 4 |
_aBovinos _96174 |
|
| 650 | 4 |
_aPasturas _922902 |
|
| 650 | 4 |
_aForrajes _910403 |
|
| 650 | 4 |
_aDigestion _9114927 |
|
| 650 | 4 |
_aAlimentación de los Animales _92241 |
|
| 650 | 4 |
_aEficacia _912357 |
|
| 650 | 4 |
_aSeparatas _9120950 |
|
| 773 | 0 |
_tCanadian Journal of Animal Science _gv. 76 n. 3 (1997) _w223984 |
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| 942 | _cART | ||
| 035 | _a(AGROP)40652 | ||
| 001 | 217469 | ||
| 999 |
_c217469 _d217469 |
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| 040 |
_aAR-ReUNN _bspa _cAR-ReUNN _eaacr2 |
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