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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Austral de Chile
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=501750423010 |
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Table of Contents:
- Effect of oil supplementation extracted from nontoxic purging nut (Jatropha curcas L) on carcass traits, tissue composition, muscle CLA concentration, and visceral mass of feedlot lambs Alfredo Estrada-Angulo José A. Félix-Bernal Miguel A. Angulo-Escalante Dolores Muy-Rangel Beatriz I. Castro-Pérez Francisco G. Ríos Andrea Cerrillo Richard A. Zinn Alejandro Plascencia Veterinaria lambs carcass Jatropha curcas supplemental oil conjugated linoleic acid The effects of purging nut ( Jatropha curcas, JCO) supplementation (0, 2, 4, and 6%, DM basis of diet) on carcass traits, tissue composition and conjugated linoleic acids (CLA) concentration in muscle was evaluated in twenty intact male lambs fed a finishing diet during 56 d. The linoleic acid proportion in JCO was 50%. Lambs were harvested at a final weight of 54.03±2.9 kg. There were no treatment effects on hot carcass weight (HCW), longissimus muscle (LM) area nor kidney-pelvic fat. However, as JCO supplementation increased, dressing percentage was decreased and fat thickness was increased. Increasing JCO in diet decreases the proportion of muscle and increases the proportion of fat in whole shoulder clod. Content of stearic acid (C18:0) in LM was not affected by JCO. However, JCO linearly increased total CLA, and hence, the CLA:C18:0 ratio. Empty body or visceral mass were not affected by JCO. Increasing JCO in diet increases visceral fat mainly through increased mesenteric fat. It is concluded that supplemental JCO does not negatively affect HCW and LM area, and represents a viable alternative for increasing CLA concentration in meat of finishing feedlot lambs. 2017 artículo científico 0719-8000 https://www.redalyc.org/articulo.oa?id=501750423010 en http://www.redalyc.org/revista.oa?id=5017 Austral Journal of Veterinary Sciences application/pdf Universidad Austral de Chile Austral Journal of Veterinary Sciences (Chile) Num.1 Vol.49