Certain meat quality characteristics of Awassi and Turkish Merino × Awassi ($F _1$) lambs

Araştırma, Türk Merinosu (Karacabey Merinosu) koçların baba hattı olarak İvesi koyunlarla birleştirilmesi yoluyla elde edilen ikili melez kuzuların et kalitesi ile ilgili özelliklerinin saf yetiştirilen İvesi kuzularla karşılaştırmalı olarak belirlenmesi amacıyla yapılmıştır. Her genotipten tek doğmuş sekiz erkek ve sekiz dişi kuzu (dört grup ve 32 kuzu) kullanılmıştır. İvesi ve Türk Merinosu × İvesi ($F _1$) kuzuların 24. saatteki pH değerleri 5,84 ve 5,80; damlama kaybı % 2,35 ve % 2,69; pişirme kaybı % 31,41 ve % 30,94; Warner-Bratzler pik kesme kuvveti 3,42 kg ve 2,63 kg; aşırı doymamış yağ asitlerinin doymuş yağ asitlerine oranı (A/D) 0,14 ve 0,16; omega 6 yağ asitlerinin omega 3 yağ asitlerine oranı (n-6/n- 3) 3,70 ve 4,66 olarak hesaplanmıştır. Araştırma sonucunda, farklılıklar pazar düzeyinde etkili olmaya yeterli olacak kadar önemli olmamakla beraber, Türk Merinosu × İvesi ($F _1$) kuzuların etlerinin İvesi kuzulara göre daha yumuşak ancak daha az sağlıklı olduğu belirlenmiştir.

Türk Merinosu ve Türk Merinosu × İvesi ($F _1$) kuzuların bazı et kalitesi özellikleri

This study aimed to determine the meat quality characteristics of 2-way crossbred lambs that were obtained by mating Turkish Merino (Karacabey Merino) as a sire line with Awassi ewes, as compared to those of purebred Awassi lambs. In all, 8 male and 8 female single born lambs from each genotype (forming 4 groups and 32 lambs) were investigated. In Awassi purebred and Turkish Merino × Awassi ($F _1$) crossbred lambs mean pH values at 24 h were 5.84 and 5.80, drip losses were 2.35% and 2.69%, cooking losses were 31.41% and 30.94%, Warner-Bratzler shear force values were 3.42 kg and 2.63 kg, P:S ratios were 0.14 and 0.16, and (n-6/n-3) ratios were 3.70 and 4.66, respectively. The results of the present study show that meat of Turkish Merino × Awassi ($F _1$) lambs was more tender but less healthy than that of Awassi lambs, although the differences were probably not important enough to be significant at the market level.

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1. Yalçın, B.C.: Genel Zootekni. İstanbul Üniv. Vet. Fak. Yayın. No: 1, İstanbul. 1981.
2. Akçapınar, H.: Koyun Yetiştiriciliği. 2. Baskı, İsmat Matbaacılık, Ankara. 2000.
3. Hoffman, L.C., Muller, M., Cloete, S.W.P., Schmidt, D.: Comparison of six crossbred lamb types: sensory, physical and nutritional meat quality characteristics. Meat Sci., 2003; 65: 1265-1274.
4. Yılmaz, A., Özcan, M., Ekiz, B., Akgündüz, M.: Investigations on the possibility of improving the meat production by crossbreeding Turkish Merino, Chios and Kıvırcık sheep breeds 2. Fattening, slaughter and carcass characteristics of lambs. Turk. J. Vet. Anim. Sci., 2002; 26: 1333-1340. (article in Turkish with an abstract in English)
5. Honikel, K.O.: Reference methods for the assessment of physical characteristics of meat. Meat Sci., 1998; 49: 447-457.
6. Vergara, H., Molina, A., Gallego, L.: Influence of sex and slaughter weight on carcass and meat quality in light and medium weight lambs produced in intensive systems. Meat Sci., 1999; 52: 221-226.
7. Bligh, E.G.H., Dyer W.J.: A rapid method of total lipid extraction and purification. Can. J. Biochem. Physiol., 1959; 37: 911-917.
8. Özdamar, K.: Biostatistics with SPSS. 4th edn., Kaan Publ., Eskişehir. 2001. (book in Turkish)
9. Murray, A.C.: The evaluation of muscle quality. In: Jones, S.D.M., Ed., Quality and Grading of Carcasses of Meat Animals. CRC Publications, Canada. 1995; 84-107.
10. McGeehin, B., Sheridan, J.J., Butler, F.: Factors affecting the pH decline in lamb after slaughter. Meat Sci., 2001; 58: 79-84.
11. Díaz, M.T., Velasco, S., Cañeque, V., Lauzurica, S., Ruiz De Huidobro, F., Pérez, C., González, J., Manzanares, C.: Use of concentrate or pasture for fattening lambs and its effect on carcass and meat quality. Small Ruminant Res., 2002; 43: 257- 268.
12. Santos-Silva, J., Vaz Portugal, A.: The effect of weight on carcass and meat quality of Serra da Estrela and Merino Branco lambs fattened with dehydrated lucerne. Anim. Res., 2001; 50: 289- 298.
13. Hopkins, D.L., Fogarty, N.M.: Diverse lamb genotypes. 2. Meat pH, colour and tenderness. Meat Sci., 1998; 49: 477-488.
14. Ekiz, B., Yilmaz, A., Ozcan, M, Kaptan, C., Hanoglu, H., Erdogan, I., Yalcintan, H.: Carcass measurements and meat quality of Turkish Merino, Ramlic, Kivircik, Chios and Imroz lambs raised under an intensive production system. Meat Sci., 2009; 82: 64-70.
15. Sheridan, R., Hoffman, L.C., Ferreira, A.V.: Meat quality of Boer goat kids and Mutton Merino lambs. 2. Sensory meat evaluation. Anim. Sci., 2003; 76: 73-79.
16. Sen, A.R., Santra, A., Karim, S.A.: Carcass yield, composition and meat quality attributes of sheep and goat under semiarid conditions. Meat Sci., 2004; 66: 757-763.
17. Anonymous: The Meat Tenderness Debate [web page on the Internet] 18.11.2005, The Natural Food Hub: http://www.naturalhub.com, 2005.
18. Bessa, R.J.B., Portugal, P.V., Mendes, I.A., Santos-Silva, J.: Effect of lipid supplementation on growth performance, carcass and meat quality and fatty acid composition of intramuscular lipids of lambs fed dehydrated lucerne or concentrate. Livest. Prod. Sci., 2005; 96: 185-194.
19. Esenbuga, N., Yanar, M., Dayioglu, H.: Physical, chemical and organoleptic properties of ram lamb carcasses from four fattailed genotypes. Small Ruminant Res., 2001; 39: 99-105.
20. Sañudo, C., Campo, M.M., Sierra, I., María, G.A., Olleta, J.L., Santolaria, P.: Breed effect on carcass and meat quality of suckling lambs. Meat Sci., 1997; 46: 357-365.
21. Santos-Silva, J., Bessa, R.J.B., Santos-Silva, F.: Effect of genotype, feeding system and slaughter weight on the quality of light lambs: II. Fatty acid composition of meat. Livest. Prod. Sci., 2002; 77: 187-194.
22. Oriani, G., Maiorano, G., Filetti, F., Di Cesare, C., Manchisi, A., Salvatori, G.: Effect of age on fatty acid composition of Italian Merino suckling lambs. Meat Sci., 2005; 71: 557-562.
23. Wood, J.D., Richardson, R.I., Nute, G.R., Fisher, A.V., Campo, M.M., Kasapidou, E., Sheard, P.R., Enser, M.: Effects of fatty acids on meat quality: a review. Meat Sci., 2004; 66: 21-32.
24. Kaya, Y., Duyar, H.A., Erdem, M.E.: The importance of fish fatty acids on human health. Ege Üniv. Su Ürün. Derg., 2004; 21: 365- 370. (article in Turkish with an abstract in English)
25. Demirel, G., Ozpinar, H., Nazli, B., Keser, O.: Fatty acids of lamb meat from two breeds fed different forage: concentrate ratio. Meat Sci., 2006; 72: 229-235.
26. Díaz, M.T., Álvarez, I., De La Fuente, J., Sañudo, C., Campo, M.M., Oliver, M.A., Font i Furnols, M., Montossi, F., San Julián, R., Nute, G.R., Cañeque, V.: Fatty acid composition of meat from typical lamb production systems of Spain, United Kingdom, Germany and Uruguay. Meat Sci., 2005; 71: 256-263.
27. Diaz, M.T., Velasco, S., Perez, C., Lauzurica, S., Huidobro, F., Cañeque, V.: Physico-chemical characteristics of carcass and meat of Manchega-breed suckling lambs slaughtered at different weights. Meat Sci., 2003; 65: 1085-1093.
28. Sanudo, C., Enser, M.E., Campo, M.M., Nute, G.R., María, G., Sierra, I., Wood, J.D.: Fatty acid composition and sensory characteristics of lamb carcasses from Britain and Spain. Meat Sci., 2000; 54: 339-346.