不同淀粉源饲粮对仔鹅生长性能、屠宰性能及胸肌肉品质、脂肪酸含量和肌纤维特性的影响  

Effects of Different Starch Source Diets on Growth Performance,Slaughter Performance and Breast Muscle Quality,Fatty Acid Contents and Muscle Fiber Characteristic of Goslings

作　　者：杨芷 徐晨 林君 王旭 杨海明[2] 王志跃[2] YANG Zhi;XU Chen;LIN Jun;WANG Xu;YANG Haiming;WANG Zhiyue(Institutes of Agricultural Science and Technology Development,Yangzhou University,Yangzhou 225009,China;College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]扬州大学农业科技发展研究院,扬州225009 [2]扬州大学动物科学与技术学院,扬州225009

出　　处：《动物营养学报》2023年第12期7828-7838,共11页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家现代农业(水禽)产业技术体系(CARS-42);国家自然科学基金项目(32202680)。

摘　　要：本试验旨在研究不同淀粉源饲粮对仔鹅生长性能、屠宰性能及胸肌肉品质、脂肪酸含量和肌纤维特性的影响。选用健康、体重相近的35日龄江南白鹅公鹅240只,随机分为4个组(糯米组、玉米组、籼米组和高直链淀粉组),每组6个重复,每个重复10只鹅。4组分别饲喂不同淀粉源(糯米、玉米、籼米和高直链淀粉)配制的试验饲粮。试验期28 d。测定仔鹅生长性能和屠宰性能,测定63日龄鹅胸肌肉品质、脂肪酸含量以及肌纤维直径和密度。结果表明:1)玉米组和籼米组的63日龄体重显著高于高直链淀粉组(P<0.05),籼米组的35~63日龄平均日增重显著高于高直链淀粉组(P<0.05)。2)玉米组和高直链淀粉组的腹脂率显著低于糯米组(P<0.05)。3)糯米组和籼米组的胸肌亮度值显著高于玉米组(P<0.05),玉米组的胸肌红度值显著高于糯米组(P<0.05),玉米组和籼米组的胸肌剪切力显著高于糯米组和高直链淀粉组(P>0.05)。4)糯米组的胸肌亚油酸、多不饱和脂肪酸(PUFA)、n-6PUFA含量及n-6/n-3PUFA比例显著高于玉米组、籼米组和高直链淀粉饲粮组(P<0.05)。5)玉米组和籼米组的胸肌肌纤维直径显著高于高直链淀粉组(P<0.05),糯米组和高直链淀粉组的胸肌肌纤维密度显著高于玉米组和籼米组(P<0.05)。由此可见,玉米和籼米作为饲粮淀粉源可提高仔鹅的生长性能和改善肉品质,饲喂籼米饲粮会降低胸肌嫩度,但可改善肌肉中n-6/n-3PUFA比例。不同淀粉源饲粮能够通过改变仔鹅机体能量的供应速率对腹脂沉积产生影响,其中饲喂糯米饲粮可提高仔鹅的腹脂率,饲喂高直链淀粉饲粮可降低仔鹅腹脂率。This experiment was conducted to investigate the effects of different starch source diets on growth performance,slaughter performance and breast muscle quality,fatty acid contents and muscle fiber characteristic of goslings.Two hundred forty healthy 35-day-old male Jiangnan white goslings were selected and randomly divided into four groups(glutinous rice group,corn group,indica rice group and high amylose group)with six replicates per group and ten goslings per replicate.Goslings in 4 groups were fed experimental diets formulated with different starch sources(glutinous rice,corn,indica rice and high amylose).The experiment lasted for 28 days.The growth performance and slaughter performance of goslings were measured,as well as the breast muscle quality,fatty acid content and muscle fiber diameter and density of goslings at 63 days of age were measured.The results showed as follows:1)the body weight at 63 days of age of corn group and indica rice group was significantly higher than that of high amylose group(P<0.05),and the average daily gain during 35 to 63 days of age of indica rice group was significantly higher than that of high amylose group(P<0.05).2)The percentage of abdominal fat of corn group and high amylose group was significantly lower than that of glutinous rice group(P<0.05).3)The breast muscle brightness value of glutinous rice group and indica rice group was significantly higher than that of corn group(P<0.05),the breast muscle redness value of corn group was significantly higher than that of glutinous rice group(P<0.05),and the breast muscle shear force of corn group and indica rice group was significantly higher than that of glutinous rice group and high amylose group(P<0.05).4)The breast muscle linoleic acid,polyunsaturated fatty acid(PUFA)and n-6PUFA contents and n-6/n-3 PUFA ratio of glutinous rice group were significantly higher than those of corn group,indica rice group and high amylose group(P<0.05).5)The muscle fiber diameter in breast muscle of corn group and indica rice group was signific

关 键 词：仔鹅 淀粉源 生长性能 肉品质 脂肪酸 

分 类 号：S835[农业科学—畜牧学]