Rasmussen A L, Mast M G
Department of Food Science, Pennsylvania State University, University Park 16802.
Poult Sci. 1989 Aug;68(8):1109-13. doi: 10.3382/ps.0681109.
The effect of feed withdrawal or total withdrawal (simultaneous feed and water withdrawal) on the composition and quality of broiler meat was evaluated. Feed or water or both were withdrawn 0, 6, 12, or 18 h before slaughter. A gradual and significant (P less than .05) increase in weight loss was seen as hours of withdrawal increased. Overall, birds subjected to feed withdrawal treatments experienced a 3.8% shrinkage; birds on total withdrawal treatments lost 4.4% in body weight. Percentage of water uptake during chilling increased gradually as feed withdrawal time increased. Birds on total withdrawal absorbed water in this fashion until 18 h of chilling, when there was a sharp and significant drop in water uptake. No significant differences were found among treatments for precook and cooked weights, cooking loss, total loss, proximate analysis, and shear. Withdrawal times for feed or feed and water did not influence the tenderness or flavor of breast or thigh meat.
评估了停喂饲料或完全停食（同时停喂饲料和水）对肉鸡胴体组成和品质的影响。在屠宰前0、6、12或18小时停止供应饲料、水或两者。随着停食时间增加，体重损失逐渐显著增加（P < 0.05）。总体而言，接受停喂饲料处理的鸡体重缩水3.8%；完全停食处理的鸡体重损失4.4%。随着停喂饲料时间增加，冷却期间的吸水百分比逐渐上升。完全停食的鸡以这种方式吸水，直到冷却18小时，此时吸水量急剧显著下降。在预煮和煮熟重量、煮制损失、总损失、近似分析和剪切力方面，各处理之间未发现显著差异。饲料或饲料与水的停喂时间不影响胸肉或腿肉的嫩度或风味。
