不同油脂对肉仔鸡生长性能、屠宰性能和肉品质的影响

发布时间：2018-10-05 17:39

【摘要】：本试验旨在研究饲粮中添加不同油脂对肉仔鸡生长性能、屠宰性能、肉品质以及血浆脂质代谢的影响。选取健康的1日龄爱拔益加肉仔鸡公雏360只,随机分成4个组,分别采食含有豆油(SO,对照)、鸡油(CO)、亚麻油(LO)和鱼油(FO)的饲粮,油脂添加水平前期(1~21日龄)为3.0%,后期(22~42日龄)为3.5%。结果表明:1)FO组肉仔鸡42日龄体重(BW)、后期和全期的平均日增重(ADG)显著低于SO和CO组(P0.05)。2)与SO组相比,21日龄时CO组的胸肌率显著降低(P0.05),42日龄时FO组的胸肌率显著降低(P0.05)。3)与SO组相比,CO和FO组的滴水损失显著增加(P0.05);CO和LO组胸肌肌肉的pH45 min和ΔpH显著增加(P0.05);CO组屠宰后45 min亮度(L*45 min)值显著增加(P0.05),FO组L*45 min和屠宰后24 h亮度(L*24 h)值显著降低(P0.05);LO和FO组屠宰后45 min红度(a*45 min)值显著增加(P0.05),CO组屠宰后24 h红度(a*24 h)值显著降低(P0.05);CO和LO组屠宰后45 min黄度(b*45 min)和24 h黄度(b*24 h)值显著增加(P0.05),FO组b*24 h值显著增加(P0.05)。4)与CO组相比,LO组21和42日龄血浆总胆固醇含量显著降低(P0.05);与SO组相比,42日龄LO组甘油三酯、低密度脂蛋白胆固醇含量显著降低(P0.05);与SO组相比,CO组42日龄高密度脂蛋白胆固醇含量显著增加(P0.05)。可见,与SO相比,CO不影响肉仔鸡生长性能,可致肉色变差和滴水损失增加;FO降低了肉仔鸡的生长性能,可改善肉色,但肌肉滴水损失增加;LO不影响肉仔鸡生长性能,可调节血浆脂质代谢,并改善肉色。
[Abstract]:The purpose of this study was to study the effects of different fats on growth performance, slaughter performance, meat quality and plasma lipid metabolism in broilers. Three hundred and sixty healthy 1-day-old male Ebariga broilers were randomly divided into four groups. Diets containing soybean oil (SO, control), (CO), linseed oil (LO) and fish oil (FO) were fed respectively. The levels of lipid supplementation were 3.0 in the early stage (1 ~ 21 days old) and 3.5in the later stage (220.42 days old). The results showed that the average daily gain (ADG) of FO group was significantly lower than that of SO and CO group (P0.05). Compared with SO group, the pectoral muscle rate of CO group was significantly lower than that of SO group (P0.05). The pectoral muscle rate of FO group at 42 days of age was significantly lower than that of SO group (P0.05). Compared with SO group, the drop water loss of CO and FO groups was significantly increased (P0.05) pH45 min and 螖 pH of pectoralis muscle in CO and LO groups were significantly increased (P0.05). The values of 45 min brightness (L5) in CO group after slaughter were significantly increased (P0.05). The values of L5 min and 24 h brightness (L24 h) in FO group were significantly lower than those in control group (P0.05). (P0.05) the value of 45 min red degree (AH45 min) increased significantly (P0.05) after slaughter in Lo and FO groups (P0.05). (P0.05) the value of red degree (AH24 h) in CO group decreased significantly (P0.05), and the values of 45 min yellow (45 min) and 24 h yellowness (B24 h) in LO group and CO group were significantly increased (P0.05) and significantly increased (P0.05) in FO group and in FO group (P0.05) and in LO group (P0.05) after slaughter, the value of 45 min (45 min) and 24 h yellow (B24 h) were significantly increased (P0.05) and that in LO group was significantly increased (P0.05). Compared with the control group, the plasma total cholesterol content in the CO group was significantly lower than that in the control group (P0.05), and the triglyceride level in the LO group at 42 days old was significantly lower than that in the SO group. The content of low density lipoprotein cholesterol (LDL-C) decreased significantly (P0.05); compared with SO group, the content of HDL-C in CO group increased significantly at 42 days (P0.05). Compared with SO, CO did not affect the growth performance of broilers, but decreased the growth performance and improved the color of broilers, but increased muscle drip loss did not affect the growth performance of broilers. Can regulate plasma lipid metabolism and improve meat color.
【作者单位】：中国农业科学院饲料研究所农业部饲料生物技术重点开放实验室;
【基金】：家禽产业技术体系北京市创新团队项目(CARS-PSTP) 国家科技支撑计划(2011BAD26B04)
【分类号】：S831.5

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