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Effects of different lipid sources on intake, digestibility and purine derivatives in hair lambs.
- Source :
-
Journal of animal physiology and animal nutrition [J Anim Physiol Anim Nutr (Berl)] 2016 Aug; Vol. 100 (4), pp. 723-30. Date of Electronic Publication: 2016 Feb 08. - Publication Year :
- 2016
-
Abstract
- An experiment was conducted to evaluate the effects of different lipid sources on the nutrient intake, digestibility and purine derivative excretion of lambs. Thirty-five 60-day-old, male, non-castrated Santa Ines lambs with an initial average body weight (BW) of 13.00 ± 1.80 kg were used in a randomized complete block design with seven blocks and five treatments. The experimental treatments consisted of a control diet without supplemental lipids and four test diets with different lipid supplements, selected according to the degree of ruminal protection from hydrogenation: supplementation, being supplementation with whole cottonseed (WC), supplementation with cashew nut meal (CNM), supplementation with both cottonseed and cashew nut meal (WC-CNM) and supplementation with calcium salts of long-chain fatty acids (Ca-LCFA). The lambs were slaughtered after reaching 28 kg average BW for each treatment. The ether extract intake (EEI) was higher (p < 0.01) for the lipid supplemented compared to control diet lambs. Supplementation with WC decreased the digestibility of dry matter (DM), organic matter (OM), neutral detergent fibre (NDF) and total carbohydrate (TC) (p < 0.01), whereas supplementation with CNM, WC-CNM and Ca-LCFA reduced non-fibrous carbohydrate (NFC) digestibility (p < 0.01). The ether extract (EE) digestibility coefficient was higher with CNM, followed by Ca-LCFA and WC, when compared to WC-CNM and control diets. Nitrogen balance (NB) was not influenced (p > 0.05) by the different lipid sources. A lower purine derivative (PD) excretion and thus lower microbial protein supply (MPS) was observed for animals supplemented with Ca-LCFA (p < 0.01) compared to the WC-CNM and control diets. In conclusion, WC, CNM and WC-CNM supplementation did not have negative effects on MPS, although negative effects have been observed on nutrient digestibility.<br /> (Journal of Animal Physiology and Animal Nutrition © 2016 Blackwell Verlag GmbH.)
- Subjects :
- Anacardium chemistry
Animal Nutritional Physiological Phenomena
Animals
Cottonseed Oil administration & dosage
Cottonseed Oil chemistry
Fatty Acids administration & dosage
Fatty Acids chemistry
Lipids chemistry
Male
Nitrogen metabolism
Purines metabolism
Animal Feed analysis
Diet veterinary
Digestion drug effects
Eating drug effects
Lipids administration & dosage
Sheep physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1439-0396
- Volume :
- 100
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Journal of animal physiology and animal nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 26854276
- Full Text :
- https://doi.org/10.1111/jpn.12438