کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2452127 1109707 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The use of dual-energy X-ray absorptiometry to estimate the dissected composition of lamb carcasses
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
The use of dual-energy X-ray absorptiometry to estimate the dissected composition of lamb carcasses
چکیده انگلیسی

A total of 140 male and female Dorset and Suffolk lambs were slaughtered according to four live weight classes (36–39 kg, 41–44 kg, 46–49 kg and 51–54 kg). Total tissue, fat and lean masses, and bone mineral content measured by dual-energy X-ray absorptiometry (DXA) were used to predict dissected tissue weights. The DXA total weights accurately predict half-carcasses and primal cuts weights (shoulder, leg, loin and flank) (R2 > 0.99, CVe < 1.3%). The prediction of the half-carcass dissected fat percentage is weaker (R2 = 0.77, CVe = 10.4%). Fatness prediction accuracy is equivalent for the shoulder, leg and loin (R2 between 0.68 and 0.78, CVe between 10% and 13%). The R2 obtained when predicting dissected lean content from DXA variables is 0.93 for the half-carcass and higher than 0.83 for all cuts other than flank (CVe are between 3.5% and 6.5%, except for the flank, which is 9.1%). The prediction of bone weight using the bone mineral content is not very accurate for the half-carcass, shoulder and leg (R2: 0.48, 0.47 and 0.43; CVe: 10.2%, 12.0% and 11.6%, respectively). The situation improves, however, for the loin (R2 = 0.70, CVe = 10.7%). In conclusion, DXA is an effective technology for predicting total weight and the amount of lean and fat in lamb carcasses and their primal cuts.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Meat Science - Volume 73, Issue 2, June 2006, Pages 249–257
نویسندگان
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