Influence du remplacement d'une partie du suif d'un aliment d'allaitement par de la tricaproïne ou de l'huile de coprah, sur l'utilisation de l'énergie et de l'azote par le veau préruminant ; influence du niveau d'alimentation antérieur
| Autor: | Michel Vermorel, B. Aurousseau, Marinett Meyer, Simone Gasnet, Françoise Duboisset, R. Souchet, J. C. Bouvier, G. Moins |
|---|---|
| Přispěvatelé: | Revues Inra, Import |
| Jazyk: | francouzština |
| Rok vydání: | 1983 |
| Předmět: |
Embryology
Nitrogen balance food.ingredient 030309 nutrition & dietetics Medicine (miscellaneous) 7. Clean energy 03 medical and health sciences Animal science food Tallow Protein digestibility [SDV.BDD] Life Sciences [q-bio]/Development Biology Dry matter Lipid deposition [SDV.BDLR] Life Sciences [q-bio]/Reproductive Biology 2. Zero hunger 0303 health sciences Chemistry Coconut oil 0402 animal and dairy science 04 agricultural and veterinary sciences 040201 dairy & animal science [SDV.AEN] Life Sciences [q-bio]/Food and Nutrition Tricaproin Reproductive Medicine Energy cost Animal Science and Zoology Developmental Biology Food Science |
| Popis: | Using two open-circuit respiratory chambers, the effects of medium chain fatty acid intake on digestibility, energy and nitrogen balance were investigated in 4 groups of preruminant Friesian male calves. One group of 7 animals was fed a control diet with a skim-milk powder and tallow base (diet 1). The other three groups were fed diets in which one-third of the tallow was replaced by either 1/3 coconut oil (6 animals, diet 2) or 1/3 tricaproin (6 animals, diet 3). In diet 4, two-thirds of the tallow was replaced by 1/3 coconut oit + 1/3 tricaproin (5 animals). Apparent digestibility and energy metabolizability (q) were similar for diets 1, 2, 3 and significantly higher (P less than 0.05) for diet 4: 97.5 vs 95.1% for dry matter digestibility 97.3 vs 94.5% for energy digestibility, 95.6 vs 93.7% for crude protein digestibility and 94.6 vs 92.8% for q. Whatever the diet, metabolizable energy (ME) efficiency for tissue deposition was 70 +/- 9% and maintenance requirements amounted to an average of 90 kcal ME/d/kgW0.75. However, the latter were related to previous feeding level and increased by .13 +/- 0.06 kcal/d/kgW0.75 for an increase of 1 kcal/d/kgW0.75 of previous ME intake. The lipids in each of the 4 diets were also deposited at a rate of 0.40 +/- 0.09 kcal. Lipid gain was decreased by 0.12 +/- 0.08 kcal for an increase of 1 kcal/d/kgW0.75 of previous Me intake. The regression coefficients of protein energy gain on Me intake were 0.25 +/- 0.01; 0.25 +/- 0.06; 0.30 +/- 0.04 and 0.29 +/- 0.06 kcal PF/kcal of ME, respectively, for protein gain did not depend on the previous level of ME intake. Finally, for each of the four diets, respective adjusted energy gains were 107.5a; 122.6b; 105.6a and 99.1a kcal/d/kgW0.75, adjusted lipid gains 60.4a; 69.0a; 50.9b and 42.6c kcal/d/kgW0.75 and adjusted protein gains 47.6a; 53.6b; 53.8b and 57.5c kcal/d/kgW0.75 (data with a different superscript are significantly different; P less than 0.05). In the present study, the energy cost of protein deposition amounted to 2.29 +/- 0.21 kcal ME/kcal of protein and that of lipid deposition to 0.99 +/- 0.20 kcal ME/kcal of lipid. |
| Databáze: | OpenAIRE |
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