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Animals 2018, 8(12), 231; https://doi.org/10.3390/ani8120231

Nutritional Supplements Fortified with Oils from Canola, Flaxseed, Safflower and Rice Bran Improve Feedlot Performance and Carcass Characteristics of Australian Prime Lambs

1
Animal Genetics and Nutrition, Veterinary Sciences Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia
2
National Institute of Animal Science, Thuy Phuong, Bac Tu Liem, Hanoi 129909, Vietnam
3
College of Economics and Techniques, Thai Nguyen University, Thai Nguyen 252166, Vietnam
4
College of Medicine and Dentistry, Division of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia
5
CSIRO Oceans & Atmosphere, P.O. Box 1538, Hobart, TAS 7001, Australia
*
Author to whom correspondence should be addressed.
Received: 3 November 2018 / Revised: 19 November 2018 / Accepted: 3 December 2018 / Published: 5 December 2018
(This article belongs to the Section Cattle)
Full-Text   |   PDF [375 KB, uploaded 5 December 2018]   |  

Simple Summary

This study evaluated the feedlot response of Australian prime lambs to supplementation with oil based polyunsaturated fatty acid enriched pellets. The results demonstrated that live animal performance and carcass characteristics of prime lambs on a lucerne basal diet were improved after the supplementation with oil based polyunsaturated fatty acid enriched pellets. Supplementation of lambs with rice bran oil and canola oil resulted in improved live animal performance and carcass characteristics of prime lambs at comparatively lower feed costs than oils from flaxseed, safflower and rumen-protected sources. These results are very useful for prime lamb producers in increasing product quality and farm profitability without compromising animal performance and well-being.

Abstract

This study investigated live animal performance and carcass characteristics of Australian prime lambs fed oil based polyunsaturated fatty acid (PUFA) enriched pellets in a feedlot system. The tested hypothesis was that supplementation of lambs with a variety of dietary oil based PUFA enriched pellets would enhance growth and carcass characteristics compared with the control lambs fed only with lucerne hay. Seventy-two, 6 months old White Suffolk x Corriedale first-cross prime lambs with an average liveweight (LWT) of 35.7 ± 0.9 kg were allocated to six treatment groups in a completely randomised experimental design. The treatments were: (1) control: lucerne hay only; or lucerne hay plus wheat-based pellets infused with 50 mL/kg dry matter (DM) of oils from (2) rice bran (RBO); (3) canola (CO); (4) rumen protected (RPO); (5) flaxseed (FO) and (6) safflower (SO) dietary sources. All lambs had ad libitum access to lucerne hay and clean fresh water. Supplemented lambs were fed 1 kg of pellet/head/day for 10 weeks. Feed intake, final LWT, average daily gain (ADG), body conformation and carcass characteristics of lambs in the supplemented groups were all greater than for the control group. SO lambs had the lowest ADG of 190.3 g/day. RBO and CO treatments had the lowest feed cost per unit gain of AU$3.0/kg. Supplemented lambs had similar over the hooks (OTH) incomes that were all higher than that of the control group. This empirical evidence-based data demonstrated that supplementation of lambs with RBO and CO had comparatively lower feed costs without compromising ADG, carcass characteristics and OTH income. View Full-Text
Keywords: PUFA; oil; prime lamb; feedlot; carcass characteristics; live performance; oils; canola; flaxseed; safflower; rice bran PUFA; oil; prime lamb; feedlot; carcass characteristics; live performance; oils; canola; flaxseed; safflower; rice bran
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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MDPI and ACS Style

Le, H.V.; Nguyen, Q.V.; Nguyen, D.V.; Malau-Aduli, B.S.; Nichols, P.D.; Malau-Aduli, A.E.O. Nutritional Supplements Fortified with Oils from Canola, Flaxseed, Safflower and Rice Bran Improve Feedlot Performance and Carcass Characteristics of Australian Prime Lambs. Animals 2018, 8, 231.

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