PDF(Pubmed)
Abstract：
This study aimed to identify the optimum level of supplementary feeds on the carcass traits and meat quality of Jamuna basin lambs. Forty selected lambs were divided into four treatments such as T0 (no concentrate supplementation), T1 (1% concentrate feed), T2 (1.5% concentrate feed) and T3 (2% concentrate feed) having ten lambs per treatment. The data were analyzed through Completely Randomized Design (CRD) with SAS software. Hot carcass, dressing percentage, head, leg, neck, loin, heart, and spleen weight were showed significantly (p < 0.05) higher values with increasing concentrate feed. The crude protein (CP), ether extract (EE) and ash values were significantly increased (p < 0.001) except T2 treatment. The ultimate pH was significantly increased except T2 and cooked pH was significantly decreased (p < 0.001) except T3 treatment. Drip loss and cooking loss (CL) % had significantly reduced (p < 0.001) except T3 treatment. The water holding capacity (WHC) % was significantly increased (p < 0.001) except T3 treatment. The score of color, juiciness and tenderness were significantly different (p < 0.001). Flavor and overall acceptability score were significantly increased (p < 0.05) in different treatments. The color values L* and b* had significantly changed (p < 0.001) and a* value was found significantly higher (p < 0.05) in all treatments. Hence, 12 months of aged lambs with 1.5% concentrate feed showed better performances on carcass, nutritional, physicochemical, sensory and instrumental color values to increase the carcass and the meat quality of lambs.
摘要：
本研究旨在确定补充饲料对Jamuna盆地羔羊car体性状和肉质的最佳水平。将40只选定的羔羊分为4种处理，例如T0（无浓缩物补充），T1（1%浓缩饲料），T2(1.5%浓缩饲料)和T3(2%浓缩饲料),每次处理10只羔羊。采用SAS软件进行完全随机设计(CRD)分析。热屠体,敷料百分比，头部,腿,脖子,腰部,心,随着浓缩饲料的增加，脾脏重量和脾脏重量显着增加（p<0.05）。粗蛋白（CP），除T2处理外，乙醚提取物（EE）和灰分值均显着增加（p<0.001）。除T2外,最终pH显著增加,除T3处理外,熟化pH显著降低(p<0.001)。除T3处理外,滴漏损失和蒸煮损失(CL)%显著降低(p<0.001)。除T3处理外,持水量(WHC)%显著增加(p<0.001)。颜色的得分，多汁性和压痛有显著差异(p<0.001)。在不同处理中,风味和总体可接受性评分显著增加(p<0.05)。在所有处理中,颜色值L*和b*具有显著变化(p<0.001),并且发现a*值显著更高(p<0.05)。因此，含1.5%浓缩饲料的12个月龄羔羊在屠体上表现更好，营养,物理化学,感官和仪器颜色值，以提高羔羊的car体和肉质。
