The energy cost of eating alfalfa/brome hay was determined for four Rocky Mountain bighorn sheep. The average increase in metabolic rate was 0.43 and 0.46 kcal. kg−1•h for ewes and rams, respectively. This represented an increment of approximately 32%. Although the energy cost of eating was less than that of domestic sheep, it appeared to represent an important component of energy budget of free-ranging animals. Zbadano energetyczny koszt odżywiania się u czterech owiec kanadyjskich (Ovis canadensis) karmionych sianem.
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Chappel et al. (1978) studied this question.
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