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آیا ترکیبات دنده 9-11 باترکیبات بدن دربره‌های دنبه‌دار افشاری مطابقت دارد؟ | ||
| پژوهش های علوم دامی (دانش کشاورزی) | ||
| دوره 32، شماره 3، آذر 1401، صفحه 123-129 اصل مقاله (259.75 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/as.2022.42388.1592 | ||
| نویسندگان | ||
| حسین شادمان1؛ احسان محجوبی* 1؛ داود زحمتکش2؛ مهدی حسین یزدی3 | ||
| 1گروه علوم دامی، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران | ||
| 2دانشگاه زنجان گروه علوم دامی | ||
| 3دانشگاه اراک، دانشکده کشاورزی و منابع طبیعی، گروه علوم دامی | ||
| چکیده | ||
| To predict body composition of growing Afshari fat-tailed lambs using the 9-11th rib composition as a predictor of whole body composition, 10 lambs were randomly selected (43.9 ± 3.9; mean shrunk body weight; mean ± SD) and harvested accordingly. After slaughter, the 9-11th rib sections were harvested from chilled carcasses for 24 h; fat, lean, fat-tail and bone were weighted separately and total separable fat (without fat-tail) and lean were grounded twice to obtain a homogenous sample for further chemical analysis. Rib dissection separable lean, fat and bone percent were (mean ± SD) 33.9 ± 6.6, 23.6 ± 6.6, and 17.3 ± 7.4, respectively. In addition, rib dissection ether extract, crude protein, moisture, and ash percent were (mean ± SD) 27.6 ± 4.1, 19.3 ± 0.7, 49.6 ± 5.3, and 1.7 ± 0.3, respectively. Except for carcass separable bone percent (with and without fat-tail), it was shown that the 9-11th physical rib composition can properly predict the carcass separable fat (adjusted R2 of 0.62 and 0.86 with and without accounting for fat-tail, respectively; P < 0.01) and lean (adjusted R2 0.77 and 0.71 with and without accounting for fat-tail, respectively; P < 0.01). As for the carcass chemical composition, with or without accounting for fat-tail, none of rib chemical commotion based on as-is analysis predicted chemical carcass composition. However, when as-is data were represented as soft tissue dry matter, only rib crude protein (%, without accounting for fat-tail) could predict carcass crude protein (adjusted R2 = 0.60; P < 0.005). In general, our results for the first time in fat-tailed sheep, showed that the 9-11th rib section can only predict physical, but not chemical, composition of fat-tailed lamb carcass. | ||
| کلیدواژه‌ها | ||
| carcass composition,؛ equation,؛ fat-tailed sheep,؛ the 9-11th rib section | ||
| مراجع | ||
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References
AOAC, 1999. Association of Official Analytical Chemist. Official methods of analysis, AOAC 16th Edition. International, Gaithersburg, USA.
Costa MRGF, Pereira ES, Pinto APP, Silva Amde S, de Medeiros AN, Mizubuti IY, Ribeiro ELde A, Campos ACN, Gadelha CRF and Oliveira RL, 2014. Prediction of body chemical composition of Morada Nova ram lambs using the composition of ribs section between 9th and 11th. Semina: Ciências Agrárias 35: 2019-2031.
Fozooni R and Zamiri MJ, 2007. Relationships between chemical composition of meat from carcass cuts and the whole carcass in Iranian fattailed sheep as affected by breed and feeding level. Iranian Journal of Veterinary Research 8: 304-312.
Hankins OG, 1946. Estimation of the Composition of Lamb Carcasses and Cuts. Technical Bulletins, United states, Department of Agriculture, No. 944
Hankins OG and Howe PE, 1946. Estimation of the composition of beef carcasses and cuts. United States Department of Agriculture Technical Bulletin No. 926. U.S. Government Printing Office. Washington, DC.
Iranian Council of Animal Care, 1995. Guide to the Care and Use of Experimental Animals. Isfahan University of Technology. Isfahan, Iran.
McEvers TJ, May ND, Reed JA, Walter LJ, Hutcheson JP and Lawrence TE, 2018. Estimation of carcass composition using rib dissection of calf-fed Holstein steers supplemented zilpaterol hydrochloride. Journal of Animal Science 96: 1396–1404.
Miller MF, Cross HR, Baker JF, Eyers FM and Recio HA, 1988. Evaluation of Live and Carcass Techniques for Predicting Beef Carcass Composition. Meat Science 23: 111-129.
Stanford K, Jones SDM and Price MA, 1998. Methods of predicting lamb carcass composition: A review. Small Ruminant Research 29: 241-254.
Teixeira A, Matos S, Rodrigues S, Delfa R and Cadavez V, 2006. In vivo estimation of lamb carcass composition by real-time ultrasonography. Meat Science 74: 289-295. | ||
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