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Effects of supplementation with fish oil and barium selenate on performance, carcass characteristics and muscle fatty acid composition of late season lamb finished on grass-based or concentrate-based diets

Published online by Cambridge University Press:  30 July 2011

R. W. Annett ,
A. F. Carson ,
A. M. Fearon  and
D. J. Kilpatrick
R. W. Annett*
Affiliation:
Agriculture Branch, Agri-food and Biosciences Institute (AFBI), Large Park, Hillsborough, Co. Down, Northern Ireland BT26 6DR, UK
A. F. Carson
Affiliation:
Agriculture Branch, Agri-food and Biosciences Institute (AFBI), Large Park, Hillsborough, Co. Down, Northern Ireland BT26 6DR, UK
A. M. Fearon
Affiliation:
Food Chemistry Branch, Agri-food and Biosciences Institute (AFBI), Newforge Lane, Belfast BT9 5PX, UK
D. J. Kilpatrick
Affiliation:
Biometrics and Information Systems Branch, Agri-food and Biosciences Institute (AFBI), Newforge Lane, Belfast BT9 5PX, UK
*
†E-mail: Ronald.Annett@afbini.gov.uk
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Abstract

The objectives of this study were to investigate the effects of fish oil supplementation on performance and muscle fatty acid composition of hill lambs finished on grass-based or concentrate-based diets, and to examine the interaction with selenium (Se) status. In September 2006, 180 entire male lambs of mixed breeds were sourced from six hill farms after weaning and finished on five dietary treatments: grazed grass (GG), grass +0.4 kg/day cereal-based concentrate (GC), grass +0.4 kg/day cereal-based concentrate enriched with fish oil (GF), ad libitum cereal-based concentrate (HC) and ad libitum fish oil-enriched concentrate (HF). Within each treatment, half of the lambs were also supplemented with barium selenate by subcutaneous injection. At the start of the trial, the proportion of lambs with a marginal (<0.76 μmol/l) or deficient (<0.38 μmol/l) plasma Se status was 0.84 and 0.39, respectively. Compared with control lambs, GG lambs treated with Se had higher (P < 0.01) plasma Se levels, whereas erythrocyte glutathione peroxidase activity was higher (P < 0.01) for Se-supplemented lambs fed diets GG and GF. However, Se supplementation had no effects on any aspect of animal performance. Fish oil increased (P < 0.05) levels of 22:5n-3 and 22:6n-3 in the Longissimus dorsi of HF lambs but otherwise had no effect on the health attributes of lamb meat. There were no significant effects of fish oil on dry matter intake, animal performance or lamb carcass characteristics. Daily carcass weight gain (CWG; P < 0.001), carcass weight (P < 0.01) and conformation score (P < 0.01) increased with increasing concentrate inputs. Lambs fed concentrate-based diets achieved a higher mean CWG (P < 0.001), dressing proportion (P < 0.001) and carcass weight (P < 0.011), and were slaughtered up to 8.3 days earlier (P < 0.05) and at 1.2 kg lower (P < 0.05) live weight than pasture-fed lambs. However, carcasses from grass-fed lambs contained lower levels of perinephric and retroperitoneal fat (P < 0.05), and had less fat over the Iliocostalis thoracis (P < 0.001) and Obliquus internus abdominis (P < 0.05). Meat from grass-fed lambs also had lower levels of 18:2n-6 and total n-6 fatty acids compared with those finished indoors. The results of this study demonstrate that fish oil supplementation has some benefits for the health attributes of meat from lambs fed concentrate-based diets but not grass-based diets. Supplementing Se-deficient lambs with barium selenate will improve Se status of lambs fed zero-concentrate diets, but has no additional benefit when lambs are already consuming their daily Se requirement from concentrates or when fish oil-enriched diets are fed.

Keywords

polyunsaturated fatty acidsseleniumsheep
Type
Full Paper
Information
animal , Volume 5 , Issue 12 , 10 November 2011 , pp. 1923 - 1937
Copyright
Copyright © The Animal Consortium 2011

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References

Annett, RW, Carson, AF, Dawson, LER 2008. Effects of digestible undegradable protein (DUP) supply and fish oil supplementation of ewes during late pregnancy on colostrum production and lamb output. Animal Feed Science and Technology 146, 270–288.CrossRefGoogle Scholar
Annett, RW, Carson, AF, Dawson, LER, Kilpatrick, DJ 2011. Effects of dam breed and dietary source of n-3 polyunsaturated fatty acids on the growth and carcass characteristics of lambs sourced from hill sheep flocks. Animal 5, 1023–1035.CrossRefGoogle ScholarPubMed
Blaxter, KL 1963. The effect of selenium administration on the growth and health of sheep on Scottish farms. British Journal of Nutrition 17, 105–115.CrossRefGoogle ScholarPubMed
Brown, F 1953. The tocopherol content of farm feedingstuffs. Journal of the Science of Food and Agriculture 4, 161–165.CrossRefGoogle Scholar
Carson, AF, Moss, BW, Dawson, LER, Kilpatrick, DJ 2001. Effects of genotype and dietary forage to concentrate ratio during the finishing period on carcass characteristics and meat quality of lambs from hill sheep systems. Journal of Agricultural Science 137, 205–220.CrossRefGoogle Scholar
Cooper, SL, Sinclair, LA, Wilkinson, RG, Hallett, KG, Enser, M, Wood, JD 2004. Manipulation of the n-3 polyunsaturated fatty acid content of muscle and adipose tissue in lambs. Journal of Animal Science 82, 1461–1470.CrossRefGoogle ScholarPubMed
Dawson, LER, Fearon, AM, Moss, B, Woods, VB 2010. The effect of substitution of a proportion of the concentrate in grass silage/concentrate based diets with extruded linseed on the performance and meat quality of dairy bulls. Animal Feed Science and Technology 156, 10–18.CrossRefGoogle Scholar
Dawson, LER, McCoy, MA, Edgar, HWJ, Carson, AF 2011. Effect of concentrate supplementation at pasture and inclusion of condensed tannins (Quebracho) in concentrates on lamb performance and faecal egg worm counts. Livestock Science 135, 205–214.Google Scholar
Demirel, G, Wachira, AM, Sinclair, LA, Wilkinson, RG, Wood, JD, Enser, M 2004. Effects of dietary n-3 polyunsaturated fatty acids, breed and dietary vitamin E on the fatty acids of lamb muscle, liver and adipose tissue. British Journal of Nutrition 91, 551–565.CrossRefGoogle ScholarPubMed
Department of Food and Rural Affairs (DEFRA) 2010. UK slaughter statistics. Retrieved August 17, 2010, from http://www.defra.gov.uk/evidence/statistics/foodfarm/food/slaughter/documents/slaughpn.pdfGoogle Scholar
Department of Health 1994. Report on health and social subjects 46. Nutritional aspects of cardiovascular disease. Report of the Cardiovascular Review Group Committee on Medical Aspects of Food Policy. HMSO, London.Google Scholar
Dewhurst, RJ, Shingfield, KJ, Lee, MRF, Scollan, ND 2006. Increasing the concentrations of beneficial polyunsaturated fatty acids in milk produced by dairy cows in high-forage systems. Animal Feed Science and Technology 131 (special edition), 168–206.CrossRefGoogle Scholar
Fisher, AV, de Boer, H 1994. The EAAP standard method of sheep carcass assessment. Carcass measurements and dissection procedures. Report of the EAAP Working Group on Carcass Evaluation, in cooperation with the CHIEM Instituto Agronomico Mediterraneo of Zaragoza and the CEC Directorate General for Agriculture in Brussels. Livestock Production Science 38, 149–159.CrossRefGoogle Scholar
Fisher, AV, Enser, M, Richardson, RI, Wood, JD, Nute, GR, Kurt, E, Sinclair, LA, Wilkinson, RG 2000. Fatty acid composition and eating quality of lamb types derived from four diverse breed × production systems. Meat Science 55, 141–147.CrossRefGoogle ScholarPubMed
Genstat 2009. Release 12.1. Lawes Agricultural Trust, Rothamsted Experimental Station, Harpenden, Hertfordshire, UK.Google Scholar
Grennan, EJ, O'Riordan, EG 1996. Efficient use of grass for mid-season lamb production. Irish Grassland and Animal Production Association Journal 30, 119–128.Google Scholar
Hemingway, RG 2003. The influences of dietary intakes and supplementation with selenium and vitamin E on reproductive diseases and reproduction efficiency in cattle and sheep. Veterinary Research Communications 27, 159–174.CrossRefGoogle ScholarPubMed
Kasapidou, E, Enser, M, Wood, JD, Richardson, RI, Wilkinson, RG, Sinclair, LA 2009. Influence of vitamin E supplementation and basal diet on the vitamin E status, performance and tissue fatty acid concentration in lambs. Animal 3, 516–526.CrossRefGoogle ScholarPubMed
Kitessa, SM, Gulati, SK, Ashes, JR, Fleck, E, Scott, TW, Nichols, PD 2001. Utilisation of fish oil in ruminants I. Fish oil metabolism in sheep. Animal Feed Science and Technology 89, 189–199.CrossRefGoogle Scholar
Mee, JF, O'Farrell, KJ, Rogers, PAM 1994. Baseline survey of blood trace element status of 50 dairy herds in the south of Ireland in the spring and autumn of 1991. Irish Veterinary Journal 47, 115–122.Google Scholar
McMurray, CH, Rice, DA 1982. Vitamin E and selenium deficiency diseases. Irish Veterinary Journal 36, 57–67.Google Scholar
Muñoz, C, Carson, AF, McCoy, MA, Dawson, LER, O'Connell, NE, Gordon, AW 2008. Nutritional status of adult ewes during early and mid pregnancy. 2. Effects of supplementation with selenised yeast on ewe reproduction and offspring performance to weaning. Animal 2, 64–72.CrossRefGoogle ScholarPubMed
Muñoz, C, Carson, AF, McCoy, MA, Dawson, LER, Irwin, D, Gordon, AW, Kilpatrick, DJ 2009. Effects of supplementation with barium selenate on the fertility, prolificacy and lambing performance of hill sheep. Veterinary Record 164, 265–272.CrossRefGoogle ScholarPubMed
National Research Council (NRC) 2007. Nutrient requirements of small ruminants. National Academies Press, Washington, DC, USA.Google Scholar
Park, RS, Agnew, RE, Gordon, FJ, Steen, RWJ 1998. The use of near infrared reflectance spectroscopy (NIRS) on undried samples of grass silage to predict chemical composition and digestibility parameters. Animal Feed Science and Technology 72, 155–167.CrossRefGoogle Scholar
Prache, S, Bechet, G, Thieriez, M 1990. Effects of concentrate supplementation and herbage allowance on the performance of grazing suckling lambs. Grass and Forage Science 45, 423–429.Google Scholar
Puls, R 1994. Mineral levels in animal health: diagnostic data, 2nd edition. Sherpa International Clearbrook, BC, Canada.Google Scholar
Rogers, PAM, Murphy, WE 2000. Levels of dry matter, major elements (calcium, magnesium, nitrogen, phosphorus, potassium, sodium and sulphur) and trace elements (cobalt, copper, iodine, manganese, molybdenum, selenium and zinc) in Irish grass, silage and hay. Retrieved August 20, 2010, from http://homepage.eircom.net/~progers/0forage.htmrogersGoogle Scholar
Rooke, JA, Robinson, JJ, Arthur, JR 2004. Effects of vitamin E and selenium on the performance and immune status of ewes and lambs. Journal of Agricultural Science, Cambridge 142, 253–262.CrossRefGoogle Scholar
Scientific Advisory Committee on Nutrition (SACN)/Committee on Toxicity (COT) 2004. Advice on fish consumption: benefits and risks. Retrieved September 10, 2010, from http://cot.food.gov.uk/pdfs/fishreport2004full.pdfGoogle Scholar
Sinclair, LA 2007. Nutritional manipulation of the fatty acid composition of sheep meat. Journal of Agricultural Science 145, 419–434.CrossRefGoogle Scholar
Sinclair, LA, Coooper, SL, Chikunya, S, Wilkinson, RG, Hallett, KG, Enser, M, Wood, JD 2005. Bio-hydrogenation of n-3 polyunsaturated fatty acids in the rumen and their effects on microbial metabolism and plasma fatty acid concentrations in sheep. Animal Science 81, 239–248.Google Scholar
Speijers, MHM, Carson, AF, Dawson, LER, Gordon, AW 2009. Effects of genotype and plane of nutrition on growth and carcass characteristics of lambs from hill sheep systems. Animal 3, 1232–1245.CrossRefGoogle ScholarPubMed
Steen, RWJ 1986. The effects of plane of nutrition and type of diet offered to yearling Friesian steers during a winter store period on subsequent performance. Animal Production 42, 29–37.Google Scholar
United States Department of Agriculture (USDA) 1996. Institutional meat purchase specifications for fresh lamb and mutton. AMS, USDA, Washington, DC.Google Scholar
Van Soest, PJ, Robertson, JB, Lewis, BA 1991. Methods for dietary fibre, neutral detergent fibre, and non-starch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74, 3583–3597.CrossRefGoogle Scholar
Wachira, AM, Sinclair, LA, Wilkinson, RG, Hallett, K, Enser, M, Wood, JD 2000. Rumen biohydrogenation of n-3 polyunsaturated fatty acids and their effects on microbial efficiency and nutrient digestibility in sheep. Journal of Agricultural Science 135, 419–428.Google Scholar
Wachira, AM, Sinclair, LA, Wilkinson, RG, Enser, M, Wood, JD, Fisher, AV 2002. Effects of dietary fat source and breed on the carcass composition, n-3 polyunsaturated fatty acid and conjugated linoleic acid content of sheep meat and adipose tissue. British Journal of Nutrition 88, 697–709.CrossRefGoogle ScholarPubMed
Wang, W, Van Dorst, S, Thornton, I 1987. The selenium status of sheep in Britain as indicated by wool selenium concentration. Environmental Geochemistry and Health 9, 48–51.Google Scholar