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Panneerselvam S, Palanisamy V, Balasubramaniam M, Palanisamy S, Jaganathan M, Kannan TA. Effect of nonstructural carbohydrates on production performance, rumen metabolism and rumen health in lambs fed with isocaloric and isonitrogenous complete diets. Trop Anim Health Prod 2024; 56:181. [PMID: 38822166 DOI: 10.1007/s11250-024-04029-4] [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: 06/02/2023] [Accepted: 05/16/2024] [Indexed: 06/02/2024]
Abstract
Nonstructural carbohydrates (NSC) are readily fermentable in the rumen and, are a critical factor while preparing protracted feed for higher animal performance. Four isocaloric and isonitrogenous complete feeds were prepared for this investigation to contain varying levels of nonstructural carbohydrates viz., 40.13 (NSC1), 45.21 (NSC2), 50.00 (NSC3) and 55.85 (NSC4) per cent, respectively. The four isocaloric and isonitrogenous complete feeds were tested in 32 Mecheri ram lambs (around three months of age) in a completely randomised block design (n = 8), and the lambs were fed their respective feed for six months. The study revealed that the increased NSC level in the complete diet increased the body weight and weight gain linearly (P < 0.05). The dietary NSC level affected the dry matter consumption in a quadratic manner (P < 0.05) and the lambs of the NSC4 group consumed significantly (P < 0.05) less DM compared to other dietary groups. The overall average feed conversion efficiency differed significantly (P < 0.05) among dietary groups. The correlation between dietary NSC level and faecal score was quadratic (r2 = 62.7, P < 0.05). The rumen pH, total nitrogen and NH3-N concentration were linearly decreased (P < 0.05) and the molar proportion of total short-chain fatty acids and propionic acid were increased (P < 0.05). The energy loss expressed as methane production was significantly (P < 0.01) lower for the high NSC diet-fed lambs. The lambs fed on a low NSC diet had significantly (P < 0.05) lower carcass weights, dressing percentage and loin eye area. The per cent share of rumen weight in the total fore stomach and the rumen papillae measurements length, width and surface area were significantly (P < 0.05) higher in high NSC diet-fed lambs. Increased levels of NSC in the diet increased (P < 0.05) fat deposition in the internal organs. The saturated fatty acids content in the meat was significantly (P < 0.05) lowered, whereas, the oleic acid and linoleic acid were increased (P < 0.05) as the NSC level increased in the diet. The study revealed that as the level of NSC increased in the complete diet there was a concomitant improvement in the final body weight, ADG and feed efficiency of post-weaned Mecheri lambs. It can therefore be recommended that the complete feed with 50 per cent NSC levels would be optimum to reap maximum returns from fattening Mecheri lambs.
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Affiliation(s)
| | - Vasan Palanisamy
- Veterinary College and Research Institute, Namakkal, Tamil Nadu, India.
- Department of Animal Nutrition, Veterinary College and Research Institute, Namakkal, Tamil Nadu, India.
| | - Mohan Balasubramaniam
- Controller of Examinations, Tamil Nadu Veterinary and Animal Sciences University, Chennai, Tamil Nadu, India
| | - Selvaraj Palanisamy
- Department of Veterinary Physiology, Veterinary College and Research Institute, Namakkal, India
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Meat quality of lambs fed crude glycerin as a replacement for corn. Small Rumin Res 2020. [DOI: 10.1016/j.smallrumres.2020.106245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Vega Britez GD, Vargas Junior FM, Retore M, Silva MC, Ledesma LLM, Silva ALA, Monteschio JO, Fernandes T. Effects of type of tropical pasture and concentrate supplementation level on the carcass traits of grazing lambs. Arch Anim Breed 2020; 63:283-291. [PMID: 32953974 PMCID: PMC7492831 DOI: 10.5194/aab-63-283-2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 07/25/2020] [Indexed: 12/04/2022] Open
Abstract
The nutritional requirements can be met, and carcass quality can be achieved by using concentrate supplementation in the diets of grazing
lambs. This study evaluated the effects of different concentrate supplementation rates (0 %, 1.5 %, and 3 % of body weight) and tropical pastures
(Panicum maximum cv. `Aruana' and Brachiaria brizantha cv. `Marandu') on lamb carcass traits. Thirty-six male Suffolk lambs, with an initial body weight
of 22.54 ± 2.72 kg, were evaluated in a 3 × 2 factorial experimental design. The concentrate used consisted of milled
soybean, maize, and oat grains. The pasture species affected empty body weight and commercial cuts. The use of concentrate supplementation affected
carcass weight, yield, indexes, and commercial cuts. Also, the use of concentrate supplementation improved the weight of muscle and fat
content. Based on discriminant analysis it is possible to identify the rearing systems, when all variables where used, or the level of concentrate
supplementation when variables of weight were used. Carcasses of animals on grass-only diets were different and easier to discriminate. The use of
concentrate supplementation on rearing lambs improves the quality of carcass traits. The period of finishing can be shorted with supplementation of
3 % of body weigh in Aruana and Marandu grass. The discriminant analysis can identify the differences between rearing systems based on all
carcass traits. This analysis can be used to develop carcass traceability systems.
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Affiliation(s)
- Gustavo Daniel Vega Britez
- Facultad de Ciencias Agrarias, Universidad Nacional de Asunción Filial Pedro Juan Caballero, Pedro Juan Caballero, 79900-000, Paraguay
| | | | | | - Marcelo Corrêa Silva
- Faculdade de Ciências Agrárias, Federal University of Grande Dourados (UFGD), Dourados, MS, 79804-970, Brazil
| | - Luana Liz Medina Ledesma
- Faculdade de Ciências Agrárias, Federal University of Grande Dourados (UFGD), Dourados, MS, 79804-970, Brazil
| | - Adrielly Lais Alves Silva
- Faculdade de Ciências Agrárias, Federal University of Grande Dourados (UFGD), Dourados, MS, 79804-970, Brazil
| | | | - Tatiane Fernandes
- Faculdade de Ciências Agrárias, Federal University of Grande Dourados (UFGD), Dourados, MS, 79804-970, Brazil
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