FournierThomas1997

Référence

Fournier, F. and Thomas, D.W. (1997) Nitrogen and energy requirements of the North American porcupine (Erethizon dorsatum). Physiological and Biochemical Zoology, 70(6):615-620.

Résumé

We measured nitrogen and energy requirements in adult North American porcupines (Erethizon dorsatum) fed three experimental diets differing primarily in crude protein content. Porcupines ingested 497.3-865.4 kJ kg-0.75 d-1, and there was no significant loss of body mass on any dietary treatment. Individuals maintained nitrogen balance on a total nitrogen intake of 389.4 mg N kg-0.75 d-1. The true digestibility of nitrogen was high (88%) but within the range for eutherians. We found metabolic fecal nitrogen to be 0.92 mg N g-1 dry matter intake and endogenous urinary nitrogen to be 223 mg N kg-0.75 d-1. The low value of metabolic fecal nitrogen found for porcupines affects the dry matter intake required for nitrogen balance, and it may allow these animals to exploit nitrogen-poor diets. © 1997 by The University of Chicago. All rights reserved.

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@ARTICLE { FournierThomas1997,
    AUTHOR = { Fournier, F. and Thomas, D.W. },
    TITLE = { Nitrogen and energy requirements of the North American porcupine (Erethizon dorsatum) },
    JOURNAL = { Physiological and Biochemical Zoology },
    YEAR = { 1997 },
    VOLUME = { 70 },
    PAGES = { 615-620 },
    NUMBER = { 6 },
    NOTE = { 15222152 (ISSN) Export Date: 26 April 2007 Source: Scopus CODEN: PBZOF Language of Original Document: English Correspondence Address: Fournier, F.; Groupe de Recherche en E?cologie, Nutrition et E?nerge?tique; De?partement de Biologie; Universite? de Sherbrooke Sherbrooke, Que. J1K 2R1, Canada References: Batzli, G.O., Cole, F.R., Nutritional ecology of microtine rodents: Digestibility of forage (1979) J. Mammal., 60, pp. 740-750; Delorme, M., Thomas, D.W., Nitrogen and energy requirements of the short-tailed fruit bat (Carollia perspiscilata): Fruit bats are not nitrogen constrained (1996) J. Comp. Physiol. B, 166, pp. 427-434; Farrell, B.C., Christian, D.P., Energy and water requirements of lactation in the North American porcupine, Erethizon dorsatum (1987) Comp. Biochem. Physiol., 88 A, pp. 695-700; Hammond, K.A., Wunder, B.A., The role of diet quality and energy need in the nutritional ecology of a small herbivore, Microtus ochrogaster (1991) Physiol. Zool., 64, pp. 541-567; Hayssen, V., Lacy, R.C., Basal metabolic rates in mammals: Taxonomic differences in the allometry of BMR and body mass (1985) Comp. Biochem. Physiol., 81 A, pp. 741-754; Hume, I.D., (1982) Digestive Physiology and Nutrition of Marsupials, , Cambridge University Press, Cambridge; Hume, I.D., Morgan, K.R., Kenagy, G.J., Digesta retention and digestive performance in Sciurid and Microtine rodents: Effects of hindgut morphology and body size (1993) Physiol. Zool., 66, pp. 396-411; Hume, I.D., Ru?bsamen, K., Engelhardt, W.V., Nitrogen metabolism and urea kinetics in the rock hyrax (Procavia habessinica) (1980) J. Comp. Physiol., 138, pp. 307-314; Kam, M., Degen, A.A., Water, electrolyte and nitrogen balances of fat sand rats (Psammomys obesus) when consuming the saltbush Atriplex halimus (1988) J. Zool., 215, pp. 453-462; Karasov, W.H., Energy assimilation, nitrogen requirement, and diet in free-living antelope ground squirrels, Ammospermophilus leucurus (1982) Physiol. Zool., 55, pp. 378-392; Mould, E.D., Robbins, C.T., Nitrogen metabolism in elk (1981) J. Wildl. Manag., 45, pp. 323-334; Payette, S., Recent porcupine expansion at tree line: A dendroecological analysis (1986) Can. J. Zool., 65, pp. 551-557; Robbins, C.T., (1993) Wildlife Feeding and Nutrition, , Academic Press, San Diego; Roze, U., Winter foraging by individual porcupines (1984) Can. J. Zool., 62, pp. 2425-2428; Smith, A.P., Green, S.W., Nitrogen requirements of the sugar glider (Petaurus breviceps), an omnivorous marsupial, on a honey-pollen diet (1987) Physiol. Zool., 60, pp. 82-92; Smuts, D.B., The relationship between the basal metabolism and the endogenous nitrogen metabolism, with particular reference to the estimation of the maintenance requirement of protein (1935) J. Nutr., 9, pp. 403-433; Thomas, D.W., Fruit intake and energy budgets of frugivorous bats (1984) Physiol. Zool., 57, pp. 457-467; Warner, A.C.I., Rate of passage of digesta through the gut of mammals and birds (1981) Nutr. Abstr. Rev. (B), 51, pp. 789-820; Wellard, G.A., Hume, I.D., Nitrogen metabolism and nitrogen requirements of the brushtail possum, Trichosurus vulpecula (Kerr) (1981) Aust. J. Zool., 29, pp. 147-156; Westoby, M., An analysis of diet selection by large generalist herbivores (1974) Am. Nat., 108, pp. 290-304. },
    ABSTRACT = { We measured nitrogen and energy requirements in adult North American porcupines (Erethizon dorsatum) fed three experimental diets differing primarily in crude protein content. Porcupines ingested 497.3-865.4 kJ kg-0.75 d-1, and there was no significant loss of body mass on any dietary treatment. Individuals maintained nitrogen balance on a total nitrogen intake of 389.4 mg N kg-0.75 d-1. The true digestibility of nitrogen was high (88%) but within the range for eutherians. We found metabolic fecal nitrogen to be 0.92 mg N g-1 dry matter intake and endogenous urinary nitrogen to be 223 mg N kg-0.75 d-1. The low value of metabolic fecal nitrogen found for porcupines affects the dry matter intake required for nitrogen balance, and it may allow these animals to exploit nitrogen-poor diets. © 1997 by The University of Chicago. All rights reserved. },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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