机构地区:[1]青岛农业大学优质水禽研究所,山东青岛266109 [2]青岛农业大学食品科学与工程学院,山东青岛266109
出 处:《中国农业科学》2011年第14期3016-3026,共11页Scientia Agricultura Sinica
基 金:国家水禽产业技术体系专项基金资助(CYCYTX-45-07)
摘 要:【目的】研究不同硒源对鹅生产性能、屠宰性能、肉品质、肌肉常规养分、免疫和抗氧化功能的影响。【方法】试验选用1日龄健康、体重相近的肉鹅96只(P>0.05),按单因素完全随机设计分为对照组、亚硒酸钠组、酵母硒组和纳米硒组4组,每组3个重复,每个重复8只;对照组饲喂基础日粮,其它3组分别在基础日粮中添加0.3 mg.kg-1水平的亚硒酸钠、酵母硒和纳米硒。【结果】除9周龄酵母硒组胸肌率、腿肌率显著高于对照组外(P<0.05),4、9周龄其余各试验组鹅的体增重、料重比、屠宰性能指标均与对照组差异不显著(P>0.05),且不同硒源间对鹅的生产性能也无显著性影响(P>0.05)。9周龄肌肉失水率、硬度、水分、粗脂肪、灰分含量各试验组显著低于对照组(P<0.05),不同硒源间差异不显著(P>0.05);各试验组滴水损失显著低于对照组(P<0.05),且酵母硒组显著低于亚硒酸钠组(P<0.05);肌红蛋白含量各试验组显著高于对照组(P<0.05),酵母硒组显著高于亚硒酸钠组(P<0.05);各试验组粗蛋白含量显著高于对照组(P<0.05),且酵母硒和纳米硒组显著高于对照组(P<0.05),但不同硒源间差异不显著(P>0.05)。除9周龄亚硒酸钠组、纳米硒组脾脏指数与对照组差异不显著外(P>0.05),第4、9周龄其余各试验组胸腺指数、脾脏指数、法氏囊指数均显著高于对照组(P<0.05),但不同硒源间差异不显著(P>0.05);第4、9周龄T淋巴细胞转化率与对照组相比,亚硒酸钠组、纳米硒组均显著提高(P<0.05),酵母硒组极显著提高(P<0.01),且酵母硒组显著高于亚硒酸钠组(P<0.05)。各试验组4、9周龄血清与肝脏中谷胱甘肽过氧化物酶(GSH-PX),总超氧化物歧化酶(T-SOD)和总抗氧化能力(T-AOC)活力均显著高于对照组(P<0.05);各试验组4、9周龄血清与肝脏中丙二醛(MDA)和过氧化氢(H2O2)均显著低于对照组(P<0.05);不同硒源的4周龄试验肉鹅血清中GSH-PX活力差�[Objective] The objective of the experiment is to study the effect of different selenium sources on production performance, slaughter performance, meat quality, muscles conventional nutrients,immune function and anti-oxidation function in goose. [Method] Ninety-six one-day-old geese with similar initial body weight (P〉0.05) were divided into 4 groups with three replications per group according to a completely random design. The proportion of selenium in the same basal diets was 0.30 mg.kgq, respectively. The control group was fed with basal diet, the other three groups was fed with basal diet added with sodium selenite (SS), Se-enriched yeast (SY) and Nano-Se, respectively. [Result] Except that breast muscle percentage and leg muscle rate index of SY group were much higher than the control group (P〈0.05), the body weight gain, feed conversion ratio and slaughter performance index of 4 and 9-week-old goose in other groups were no obvious difference (P〉0.05), and there was no obvious difference in different selenium sources (P〉0.05). The water loss rate, hardness, water content and crude fat content index of 9-week-old goodse in other groups were lower than the control group (P〈0.05), and there was no obvious difference in different selenium sources (.P〉 0.05). The drip loss of other groups were lower than the control group (P〈0.05), the drip loss of SY was lower than SS (P〈0.05). The mypglobin content of other groups were higher than the control group (P〈0.05), the mypglobin content of SY was higher than SS (P〈0.05). The crude protein content of SY and Nano-Se were higher than the control group (P〈0.05), and there was no obvious difference in different selenium sources (P〉0.05). Various selenium sources increased significantly in immune function of goose, except that spleen index of Nano-Se group compared with the control group was no obvious difference, the immune organ index of 4 and 9-week-old of other groups were much higher than t
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