Comparing the captec bolus to chromic oxide dosed twice daily using sheep in confinement

Thirty-six wethers were used in 3 trials to compare estimates of fecal output using chromic oxide either in a continuous-release bolus or dosed twice daily. Wethers were confined in metabolism crates and fed alfalfa. Chromium content was determined in rectal grab samples. Only in trial 2 were differ...

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Bibliographic Details
Published in:Journal of range management 1991-07, Vol.44 (4), p.408-409
Main Authors: Hatfield, P.G. (USDA, Agricultural Research Service, U.S. Sheep Experiment Station, Dubois, ID), Walker, J.W, Glimp, H.A
Format: Article
Language:English
Subjects:
Alfalfa
ALIMENT POUR ANIMAUX
Animal collection
Boluses
CHROME
Chromium
CROMO
Estimate reliability
Estimation methods
FECES
Feed intake
FORMULACIONES
FORMULATION
Grazing behavior
HECES
INGESTION DE PIENSO
OVIN
OVINOS
Oxides
OXIDOS
OXYDE
PIENSOS
PRISE ALIMENTAIRE (ANIMAUX)
Technical Notes
Wethers
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Summary:Thirty-six wethers were used in 3 trials to compare estimates of fecal output using chromic oxide either in a continuous-release bolus or dosed twice daily. Wethers were confined in metabolism crates and fed alfalfa. Chromium content was determined in rectal grab samples. Only in trial 2 were differences (P = 0.06) detected between the ability of the 2 methods to precisely estimate fecal output. Variation of estimated fecal output was greater using the bolus than estimates using the twice daily dosing method. Both methods tended to over-estimate actual fecal output under pen fed conditions
ISSN:0022-409X
2162-2728
DOI:10.2307/4002410