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Polyethylene glycol in concentrate or feedblocks to deactivate condensed tannins in Acacia cyanophylla Lindl. foliage 2. Effects on meat quality of Barbarine lambs

Published online by Cambridge University Press:  18 August 2016

A. Priolo ,
H. Ben Salem ,
N. Atti  and
A. Nefzaoui
A. Priolo*
Affiliation:
University of Catania, DACPA Sezione di Scienze delle Produzioni Animali, via Valdisavoia 5, 95123 Catania, Italy
H. Ben Salem
Affiliation:
INRA-Tunisie, Laboratoire de Nutrition Animale, rue Hédi Karray, 2049 Ariana, Tunisia
N. Atti
Affiliation:
INRA-Tunisie, Laboratoire de Recherche Ovine et Caprine, rue Hédi Karray, 2049 Ariana, Tunisia
A. Nefzaoui
Affiliation:
INRA-Tunisie, Laboratoire de Nutrition Animale, rue Hédi Karray, 2049 Ariana, Tunisia
*
†E-mail alessandro@mbox.fagr.unict.it
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Abstract

Twenty-five male Barbarine lambs aged approximately 150 days were divided into five groups. All the animals received 400 g/day of oat hay and Acacia cyanophylla Lindl. foliage ad libitum. Two groups also received 300 g/ day of a mixture (70: 30) of processed barley and wheat bran, with or without 20 g polyethylene glycol 4000 (PEG), groups CPEG and C respectively. The three other groups had free access to feedblocks based on olive cake, and containing urea, urea and PEG, or PEG, groups BU, BUPEG and BPEG respectively. Lambs were slaughtered at age 230 days and meat quality was determined in the longissimus thoracis et lumborum muscle. Lean colour was significantly affected by dietary condensed tannins. Lightness (L*) was higher in those animals that did not receive PEG (P < 0·001) indicating that condensed tannins can cause lighter meat colour. This difference was not due to the ultimate pH, which was not affected by the inclusion of PEG in the diet. Meat from groups that received supplementation of concentrate had lower values of resistance to the Warner-Bratzler shear device compared with those that received feedblocks. This result was confirmed by a taste panel, that found samples from groups C and CPEG more tender than samples from groups BU, BUPEG and BPEG. Inclusion of PEG in the diet increased intensity of flavour (P < 0·05) but had no effect on overall acceptability. Meat from animals that had received the concentrate had higher overall acceptability (P < 0·05) than meat from animals that received the feedblocks. No differences were found in meat chemical composition.

Keywords

Acacia cyanophyllameat qualitypolyethylene glycolsheeptannins
Type
Research Article
Information
Animal Science , Volume 75 , Issue 1 , August 2002 , pp. 137 - 140
Copyright
Copyright © British Society of Animal Science 2002

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References

Association of Official Analytical Chemists. 1995. Official methods of analysis: meat and meat products, 16th edition. AOAC, Washington DC.Google Scholar
Ben Salem, H., Atti, N., Priolo, A. and Nefzaoui, A. 2002. Polyethylene glycol in concentrate or feedblocks to deactivate condensed tannins in Acacia cyanophylla Lindl. foliage. 1. Effects on intake, digestion and growth by Barbarine lambs. Animal Science 75: 127–135.CrossRefGoogle Scholar
Boccard, R., Buchter, L., Casteels, E., Cosentino, E., Dransfield, E., Hood, D. E., Joseph, R. L., MacDougall, D. B., Rhodes, D. N., Schon, I., Tinbergen, B. J. and Touraille, C. 1981. Procedures for measuring meat quality characteristics in beef production experiments. Report of a working group in the Commission of the European Communities (CEC) Beef Production Research Programme. Livestock Production Science 8: 385–397.CrossRefGoogle Scholar
Commission International de l’Éclairage. 1986. Colorimetry, second edition. Publication CIE 15·2. CIE, Vienna.Google Scholar
Crouse, J. D., Field, R. A., Chant, J. L., Ferrel, C. L., Smith, G. M. and Harrison, V. L. 1978. Effect of dietary intake on carcass composition and palatability of different weight carcasses from ewe and ram lambs. Journal of Animal Science 47: 1207–1218.CrossRefGoogle Scholar
Failla, S., Iacurto, M., Gigli, S., Mormile, M., Bonanno, A. and Alabiso, M. 1996. Cooking effect on chemical and physical quality of frozen longissimus dorsi of lambs. Proceedings of the 42nd ICoMST, ‘Meat for the consumer’, Lillehammer, Norway, vol. D-1, pp. 132–133.Google Scholar
Foo, L. Y., Lu, Y., McNabb, W. C., Waghorn, G. C. and Ulyatt, M. J. 1997. Proanthocyanidins from Lotus pedunculatus . Phytochemistry 45: 1689–1695.CrossRefGoogle Scholar
Foo, L. Y., Newman, R., Waghorn, G. C., McNabb, W. C. and Ulyatt, M. J. 1996. Proanthocyanidins from Lotus corniculatus . Phytochemistry 41: 617–624.CrossRefGoogle Scholar
Johnson, M. H., Bidner, T. D., McMillin, K. W., Dugas, M. S. and Hembry, F. G. 1989. The effect of free temperature conditioning treatments and subcutaneous fat removal on lamb quality. Journal of Animal Science 67: 3080–3086.CrossRefGoogle Scholar
Jones, B. K. and Tatum, J. D. 1994. Predictors of beef tenderness among carcasses produced under commercial conditions. Journal of Animal Science 72: 1492–1501.CrossRefGoogle ScholarPubMed
Klont, R. E., Barnier, V. M. H., Smulders, F. J. M., Dijk, A. van, Hoving-Bolink, A. H. and Eikelenboom, G. 1999. Post-mortem variation in pH, temperature, and colour profiles of veal carcasses in relation to breed, blood haemoglobin content and carcass characteristics. Meat Science 53: 195–202.CrossRefGoogle ScholarPubMed
Priolo, A., Lanza, M., Pennisi, P., Biondi, L. and Waghorn, G. 1998. Effect of condensed tannins in carob pulp on lamb meat quality Proceedings of the VIII world conference on animal production, Seoul, Korea, pp. 908–909.Google Scholar
Priolo, A., Waghorn, G. C., Lanza, M., Biondi, L. and Pennisi, P. 2000. Polyethylene glycol as a means for reducing the impact of condensed tannins in carob pulp: effects on lamb growth performance and meat quality. Journal of Animal Science 78: 810–816.CrossRefGoogle ScholarPubMed
Sañudo, C., Santolaria, M. P., María, G., Osorio, M. and Sierra, I. 1996. Influence of carcass weight on instrumental and sensory lamb meat quality in intensive production systems. Meat Science 42: 195–202.CrossRefGoogle ScholarPubMed
Statistical Analysis Systems Institute. 1987. SAS user’s guide: statistics, sixth edition. SAS Institute Inc., Cary, NC.Google Scholar
Waghorn, G. C., Reed, J. D. and Ndlovu, L. R. 1999. Condensed tannins and herbivore nutrition. Proceedings of the 18th international grassland congress (ed. Buchanan-Smith, J.G., Bailey, L.D. and McCaughy, P.), volume iii, pp. 153–166. Association Management Centre, Calgary, AB.Google Scholar
Young, O. A., Reid, D. H. and Scales, G. H. 1993. Effect of breed and ultimate pH on the odour and flavour of sheep meat. New Zealand Journal of Agricultural Research 36: 363–370.CrossRefGoogle Scholar
Zembayashy, M., Lunt, D. K. and Smith, S. B. 1999. Dietary tea reduces the iron content of beef. Meat Science 53: 221–226.CrossRefGoogle Scholar