Biotechnology in Animal Husbandry - Institut za Stočarstvo

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Biotechnology in Animal Husbandry 27 (2), p 259-263 , 2011 ISSN 1450-9156 Publisher: Institute for Animal Husbandry, Belgrade-Zemun UDC 637. 55/636.52 DOI:10.2298/BAH1102259K PHENOTYPIC CONNECTION OF THE MAIN BODY PARTS OF RABBITS AND LAYERS A. Kuzelov 1 , O. Savinok 2 , E. Atanasova 1 1 University “ Goce Delcev”, Faculty of Agriculture Stip R. Macedonia 2 National Academy Odesa Food Technology Ukraina Corresponding author: aco.kuzelov@ugd.edu.mk Original scientific paper Abstract: Nowadays in some west European countries increase the need of rabbit meat .The production of rabbit’s meat in these countries is based on some practical knowledge and methods of selection and breeding. The success in production of this kind of meat depends from the rabbit’s fat or from the quality of the body during the transport (confectioning meat). That is the reason why in these countries the selection of rabbits is making with a big attention. That is why is important to examine the phenotypic connection of the slaughter’s characteristics during the confirmation of the optimal selective criterion. The mass of the thighs and the mass of the muscle layer of the thighs are very important for the rabbit’s selection. The thigh’s mass has strong phenotypic correlation and full genetic correlation with the mass of the clean body. The purpose of this investigation is to find the range of connection of the thigh’s dissection based on correlative and regressive analysis in the prediction of the thigh’s meat contribution and also from the clean body. Based on the obtained results we can conclude that the mass of the thighs is a reliable indicator as to the yield of the thigh as for the whole body musculature. Key words: rabbit’s meat, phenotypic correlation, genotypic correlation Introduction Production of rabbit meat is based on practical knowledge and methods of breeding and selection. In order to determine the optimal criteria selection studying the relationship between rabbit phenotypic characteristics has great significance (Kapitan 2006).Feeding of rabbits have a major impact on the quality of rabbit meat Selection of rabbits coefficients are significant phenotypic in genotypic correlation between age and weight of the carcass clean, the mass of the thighs and the mass of the muscle tissue of the thighs (Flank et al., 1979). The mass of the thighs is very strong phenotypic and genotypic correlation with the weight of the
260 A. Kuzelov et al carcass clean. The mass of the thighs is very strong indicator of the yield of meat in the body (Niadzviadek et al., 1980, 1983). All of authors examined the phenotypic and genotypic correlations (Flak et.al., 1979; Niedzvwiadek 1980; Niedzvwiadek 1983; Panic et.al., 1989). These authors discovered that the coefficients of phenotypic correlations between the age and the mass of the cleaned body. The aim of our research is based on correlation and regression analysis to determine the degree of safety of dissection of the thigh in the assessment of yield of thigh meat and the carcass clean. Materials and Methods For testing we used 22 hybrids of California and New Zealand rabbit. Rabbits are fed with at libidum balanced food containing alfalfa, barley, corn, wheat, soy, granules sunflower premixes, salt, vitamins and minerals. Slaughtering and primary processing of rabbits was performed in the usual way. After 24 hours cooling of carcass at a temperature of +4°C the bodies were cut in basic peaces and measuring them on an electronic balance with accuracy of 0.1 g. After the slaughtering we get the following parts: pelvic thigh part, groin part, shoulder part and part of back and chest. After slaughtering the carcass of basic parts is performed the dissection of the right thigh and it is determined the participation of fat, bone and muscle connective tissue in the total mass of the thigh. Average values and variability of indicators of basic parts of the body and tissues is determined with variation statistical method and with the correlation and regress ion analysis is determined their mutual connection . Results and Discussion The average mass of rabbit’s carcass was 2467 grams. Most of body was formed with the parts with the best quality of meat. So the mass of the pelvic part of the thigh averaged 420.5 g or 30.67 % . The groin part mass was 398.5 g. or 29.04%. The forelegs part of 300.5 g. or 21.94% and neck –breast part with 267.75 g. or 18,35% of the average mass of the body. Participation of the basic parts of a carcass in these rabbit pox in the research are consistent with results obtained from (Panic et al.,1989). With the dissection of the right thigh is found that the average mass of muscle tissue was 168 g or 76.42%, fat tissue 3.65 g. Or 1, 72% connective tissue 5.60 or 2.5% and 43.5g bone tisueor19.5%.Unlike the basic parts of the body, muscle tissue and bones of the thigh which varied from 5.7 to 10. 6% mass of fat and connective tissue manifested very high phenotypic variability (42.5% and 56.2%) indicating that these properties do not have a normal frequency
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UDC 636 ISSN 1450-9156 VOL 27, 2 Fo
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Biotechnology in Animal Husbandry 2
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128 V. Pantelić et al. effects of
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134 V. Pantelić et al. se nalazile
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Table 1. Feeding regime durring the
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The effect of crossing of domestic
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154 J. Pleadin et al. Decision 2002
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156 J. Pleadin et al. Koncentacije
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158 J. Pleadin et al. CACCIATORE G.
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160 Efficiency of bovine IGF -I gen
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184 D. Vitorović et al. (Vićentij
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188 D. Vitorović et al. deposition
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190 D. M. Ogah Blasco et al. (1984)
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192 D. M. Ogah Tabe 1. Descriptive
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194 D. M. Ogah chicken genotypes fo
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196 D. M. Ogah HU Y.H. (1999) .Vari
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198 Introduction V. Gerzilov et al.
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200 Results and Discussion V. Gerzi
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202 V. Gerzilov et al. The histolog
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204 V. Gerzilov et al. Table 2. Mic
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