During the experimental period of 50-100 days, three comparative slaughter trials were carried out on ninety-two Apennine lambs. Eleven lambs were slaughtered at 50 days old, in order to estimate initial body composition. Their empty bodies were analized for energy, protein, fat, ash and water. On average, chemical body composition resulted: moisture 56.26%, protein 16.64%, fat 10.47%, ash 3.84% and energy 7.26 MJ/kg. Individual body content and chemical body composition were correlated with live weight (LW). Linear regression equations were then calculated. The equations in the case of body content were the following: water (g) = 508.69 LW(kg) + 952.24, d.s.r. = 286.26, R2 = 0.98; protein (g) = 146.68 LW(kg) + 346.02, d.s.r. = 177.33, R2 = 0.93; fat (g) = 222.70 LW (kg) + 2083.96, d.s.r. = 273.72, R2 = 0.93; ash (g) = 31.68 LW (kg) + 118.48, d.s.r. = 66.19, R2 = 0.82; energy (MJ) = 10.23 LW (kg) – 52.46, d.s.r. = 9.44, R2= 0.96. No confidence linear regression equations were obtained for chemical body composition, with the exception of fat (%) = 0.69 LW (kg) + 2.34, d.s.r. = 1.58, R2 = 0.79 and energy (MJ/kg) = 0.17 LW (kg) – 4.03, d.s.r. = 0.52, R2 = 0.68.
Macellazioni comparative: stima della composizione corporea iniziale di agnelli appenninici
LIPONI, GIAN BATTISTA;CASINI, LUCIA;GATTA, DOMENICO
2003-01-01
Abstract
During the experimental period of 50-100 days, three comparative slaughter trials were carried out on ninety-two Apennine lambs. Eleven lambs were slaughtered at 50 days old, in order to estimate initial body composition. Their empty bodies were analized for energy, protein, fat, ash and water. On average, chemical body composition resulted: moisture 56.26%, protein 16.64%, fat 10.47%, ash 3.84% and energy 7.26 MJ/kg. Individual body content and chemical body composition were correlated with live weight (LW). Linear regression equations were then calculated. The equations in the case of body content were the following: water (g) = 508.69 LW(kg) + 952.24, d.s.r. = 286.26, R2 = 0.98; protein (g) = 146.68 LW(kg) + 346.02, d.s.r. = 177.33, R2 = 0.93; fat (g) = 222.70 LW (kg) + 2083.96, d.s.r. = 273.72, R2 = 0.93; ash (g) = 31.68 LW (kg) + 118.48, d.s.r. = 66.19, R2 = 0.82; energy (MJ) = 10.23 LW (kg) – 52.46, d.s.r. = 9.44, R2= 0.96. No confidence linear regression equations were obtained for chemical body composition, with the exception of fat (%) = 0.69 LW (kg) + 2.34, d.s.r. = 1.58, R2 = 0.79 and energy (MJ/kg) = 0.17 LW (kg) – 4.03, d.s.r. = 0.52, R2 = 0.68.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
