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Gurgeira DN, Crisóstomo C, Sartori LVC, de Paz CCP, Delmilho G, Chay-Canul AJ, Bedoya HJN, Vega WHO, Bueno MS, da Costa RLD. Characteristics of growth, carcass and meat quality of sheep with different feed efficiency phenotypes. Meat Sci 2022; 194:108959. [PMID: 36084489 DOI: 10.1016/j.meatsci.2022.108959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022]
Abstract
The objective was to evaluate the performance, carcass and meat quality of 40 lambs classified by RFI (residual feed intake) and RIG (residual intake and gain). Dry matter intake (DMI) was recorded to calculate the RFI and RIG, classified as efficient, moderately or inefficient. After the confinement period, they were slaughtered and the carcass and meat quality were determined. The efficient animals had DMI scores of 0.700 RFI and 0.400 kg/d RIG, lower than the inefficient ones with similar weight gain. The RFI efficient animals showed greater shear force, without effect in the RIG classification. In general, the variables analyzed were not influenced by RFI or RIG. Efficiency measures do not affect the carcass and meat quality of sheep, but they do have the advantage of identifying animals with lower feed consumption, making the system more efficient. However, as the dataset is limited to fully assess the effects, this manuscript can be used as preliminary results for future studies.
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Affiliation(s)
| | - Charleni Crisóstomo
- Instituto de Zootecnia, Rua Heitor Penteado, 56, Nova Odessa, SP 13380-011, Brazil
| | | | | | - Gustavo Delmilho
- Instituto de Zootecnia, Rua Heitor Penteado, 56, Nova Odessa, SP 13380-011, Brazil
| | - Alfonso Juventino Chay-Canul
- Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa, km 25, R/A La Huasteca, Centro, Tabasco, C.P. 86280, Mexico
| | | | - Wilder Hernando Ortiz Vega
- Centro Universitário UNINTA, Rua. Antônio Rodrigues Magalhães, 359 - Dom Expedito, Sobral, CE 62050-100, Brazil
| | - Mauro Sartori Bueno
- Instituto de Zootecnia, Rua Heitor Penteado, 56, Nova Odessa, SP 13380-011, Brazil
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Le HV, Nguyen QV, Nguyen DV, Malau-Aduli BS, Nichols PD, Malau-Aduli AEO. Nutritional Supplements Fortified with Oils from Canola, Flaxseed, Safflower and Rice Bran Improve Feedlot Performance and Carcass Characteristics of Australian Prime Lambs. Animals (Basel) 2018; 8:ani8120231. [PMID: 30563070 PMCID: PMC6315704 DOI: 10.3390/ani8120231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 11/19/2018] [Accepted: 12/03/2018] [Indexed: 01/08/2023] Open
Abstract
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.
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Affiliation(s)
- Hung V Le
- 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.
- National Institute of Animal Science, Thuy Phuong, Bac Tu Liem, Hanoi 129909, Vietnam.
| | - Quang V Nguyen
- 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.
- College of Economics and Techniques, Thai Nguyen University, Thai Nguyen 252166, Vietnam.
| | - Don V Nguyen
- 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.
- National Institute of Animal Science, Thuy Phuong, Bac Tu Liem, Hanoi 129909, Vietnam.
| | - Bunmi S Malau-Aduli
- College of Medicine and Dentistry, Division of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia.
| | - Peter D Nichols
- 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.
- CSIRO Oceans & Atmosphere, P.O. Box 1538, Hobart, TAS 7001, Australia.
| | - Aduli E O Malau-Aduli
- 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.
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