Effect of Pasture or Maize Silage Feeding on the Nutritional Value of Beef
The objective of this study was to evaluate the nutritional value of beef from different production systems. The study was conducted with Hereford bulls on organic and conventional farms. On the organic farm, fattening was mainly based on roughages, including pasture forage in the summer season, when the end of fattening occurred. On the conventional farm the bulls were fed maize silage and concentrate. On both farms, the animals were aged 7-9 months at the beginning of fattening. The bulls were fattened to a final body weight of 550-600 kg. Samples of longissimus thoracis muscle were collected from half-carcasses of slaughtered bulls originating from each farm to analyse fat content, fatty acid profile, and content of selected minerals and vitamin E. Muscle samples were additionally analysed for the concentration of thiobarbituric acid-reactive substances 3 and 7 days after slaughter. Analyses showed a lower fat content in longissimus thoracis muscle of bulls from the pasture feeding system. The fatty acid profile was also characterized by a lower content of C 14:0, and a higher content of polyunsaturated fatty acids (PUFA), including C18:3 n-3, conjugated linoleic acid, C 20:5 n-3, and C 22:5 n-3, as well as by a lower ratio of n-6/n-3 PUFA. The total content of monounsaturated fatty acids was significantly higher in animals fed maize silage and feed concentrate. In turn, the muscle of pasture fed animals had higher levels of Na, Zn and Fe as well as of vitamin E.
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AOAC (2005). Official Methods of Analysis of AOAC. International 16th Edition. Association of Analytical Chemists, Arlington, VA, USA.
Arnold R. N., Arp S. C., Scheller K. K., Williams S. N., Schaefer D. M. (1993). Tissue equilibration and subcellular-distribution of vitamin E relative to myoglobin and lipid oxidation in displayed beef. J. Anim. Sci., 71: 105-118.
Cabrera M. C., Ramos A., Saadoun A., Brito G. (2010). Selenium, copper, zinc, iron and manganese content of seven meat cuts from Hereford and Bradford steers fed pasture in Uruguay. Meat Sci., 84: 518-528.
Dela Fuente J., Diaz M. T., Alvarez I., Oliver M. A., Fonti Furnols M., Sanudo C., Campo M. M., Montossi F., Nute G. R., Caneque V. (2009). Fatty acid and vitamin E composition of intramuscular fat in cattle reared in different production systems. Meat Sci., 82: 331-337.
Ducket S. K., Wagner D. G. (1993). Effect of time on feed on beef nutrient composition. J. Anim. Sci., 71 (8): 2079-2088.
Dymnicka M., Łozicki A., Klupczyski J., Miciński J., Strzetelski J. (2006). Saturated and monounsaturated fatty acids in musculus thoracis of fattening bulls fed silage of grass and maize. Pol. J. Nat. Sci., 3: 185-191.
Enser M., Scollan N. D., Choi N. J., Kurt E., Hallet K., Wood J. D. (1999). Effect of dietary lipid content on the conjugated linoleic acid (CLA) in beef muscle. Anim. Sci., 69: 143-146.
ESA - Application note. Simultaneous Analysis of Carotenoids, Retinoids, Tocopherols, Vitamin K1 and Coenzyme Q10 in Plasma. www.esainc.com
Florek M., Litwińczuk Z., Kędzierska-Matysek M., Grodzicki T., Skałecki P. (2007). Nutritional value of meat from musculus longissimus lumborum and musculus semitendinosus of young slaughter cattle (in Polish). Med. Wet., 63 (2): 242-246.
Folch J., Lees M., Sloane-Stanley G. H. (1957). A simple method for the isolation and purification of total lipids from animal tissues. J. Biol. Chem., 226: 497-509.
French P., Stanton C., Lawless F., O'Riordan E. G., Monahan F. J., Caffrey P. J., Moloney A. P. (2000). Fatty acid composition, including conjugated linoleic acid, of intramuscular fat from steers grazed grass, grass silage, or concentrate-based diets. J. Anim. Sci., 78: 2849-2855.
Gerber N., Brogioli R., Hattendorf B., Schweeder M. R., Wenk C., Gunther D. (2009). Variability of selected trace element of different meat cuts determined by ICP-MS and DRC-ICOMS. Animal, 3: 166-172.
Johns A. M., Birkinshaw L. H., Ledward D. A. (1989). Catalysts of lipid oxidation in meat products. Meat Sci., 25: 209-220.
Khosla P., Sundram K. (1996). Effect of dietary fatty acid composition on plasma cholesterol. Prog. Lipid Res., 35: 93-132.
Koger T. J., Wulf D. M., Weaver A. D., Wright C. L., Tjardes K. E., Mateo K. S., Engle T. E., Maddock R. J., Smart A. J. (2010). Influence of feeding various quantities of wet and dry distillers grains to finishing steers on carcass characteristics, meat quality, retail-case life of ground beef, and fatty acid profile of longissimus muscle. J. Anim. Sci., 88: 3399-3408.
Lauzurica S., Dela Fuente J., Diaz M. T., Alvarez I., Perez C., Canegue V. (2005). Effect of dietary supplementation of vitamin E on characteristics of lamb meat packed under modified atmosphere. Meat Sci., 70: 639-646.
Mercier Y., Gatellier P., Renerre M. (2003). Lipid and protein oxidation in vitro, and antioxidant potential in meat from Charolais cows finished on pasture or mixed diet. Meat Sci., 66: 467-473.
Nuernberg K., Dannenberger D., Nuernberg G., Ender K., Voigt J., Scollan N. D., Wood J. D., Nute G. R., Richardson R. I. (2005). Effect of a grass-based and a concentrate feeding system on meat quality characteristics and fatty acid composition of longissimus muscle in different cattle breeds. Live. Prod. Sci., 94: 137-147.
Realini C. E., Duckett S. K., Brito G. W., Dalla Rizza M., De Matos D. (2004). Effect of pasture vs. concentrate feeding with or without antioxidants on carcass characteristics, fatty acid composition, and quality of Uruguayan beef. Meat Sci., 66: 567-577.
Roeber D. L., Belk K. E., Tatum J. D., Wilson J. W., Smith G. C. (2001). Effect of three levels of α-tocopheryl acetate supplementation to feedlot cattle on performance of beef cuts during retail display. J. Anim. Sci., 79: 1814-1820.
Shantha N. C., Moody W. G., Tabeidi Z. (1997). Conjugated linoleic acid concentration in semimembranous muscle of grass and grain-fed and zeranol-implanted beef cattle. J. Muscle Food, 8: 105-110.
Spady D. K., Woollett L. A., Dietschy J. M. (1993). Regulation of plasma LDL-cholesterol levels by dietary cholesterol and fatty acids. Ann. Rev. Nutr., 13: 355-381.
Uchiyama M., Mihara M. (1978). Determination of malonaldehyde precursor in tissue by thiobarbituric acic test. Anal. Biochem., 86: 271-278.
Wiliams C. (2000). Dietary fatty acids and human health. Ann. Zootech., 49: 165-180.
Williams J. E., Wagner D. G., Walter L. E., Horn G. W., Waller G. R., Sims P. L., Guenther J. J. (1983). Effect of production systems on performance, body composition and lipid and mineral profiles of soft tissue in cattle. J. Anim. Sci., 57: 1020-1024.
Williamson C. S., Foster R. K., Stanner S. A., Buttriss J. L. (2005). Red meat in the diet. Br. Nutr. Fdn. Nutr. Bull., 30: 323-355.
Yang A., Lanari M. C., Brewster M., Tune R. K. (2002). Lipid stability and meat color of beef from pasture and grain-fed cattle with or without vitamin E supplementation. Meat Sci., 60: 41-50.