机构地区:[1]青岛农业大学食品科学与工程学院,青岛266109 [2]青岛农业大学动物科技学院,青岛266109 [3]青岛慧和生物科技有限公司,青岛266109 [4]山东鑫谷健康产业有限公司,滨州251700
出 处:《动物营养学报》2025年第1期355-364,共10页CHINESE JOURNAL OF ANIMAL NUTRITION
基 金:2022年度山东省重点研发计划(2022LZGC014);2023山东省重点研发计划(2023TZXD042);国家现代农业产业技术体系资助(CARS-42-14)。
摘 要:本试验旨在研究高负载硒丁酸梭菌及其后生元对肉鸭生长性能、屠宰性能、血清脂质指标及肉品质的影响。选择体重相近的1日龄健康北京鸭(公)180只,随机分为5个组,每组6个重复,每个重复6只。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加丁酸梭菌发酵液(CB组)、高负载硒丁酸梭菌菌体(SCBC组)、高负载硒丁酸梭菌后生元(SCBP组)和高负载硒丁酸梭菌发酵液(SCB组),添加量均为0.3%。试验期为42 d。结果表明:1)与对照组相比,SCBC组、SCBP组和SCB组21~42日龄、1~42日龄平均日采食量和料重比显著降低(P<0.05)。2)与对照组相比,SCBC组、SCBP组和SCB组屠宰率显著升高(P<0.05),SCBC组和SCBP组全净膛率显著升高(P<0.05),各试验组胸肌率显著升高(P<0.05)。3)与对照组相比,各试验组血清丙二醛(MDA)含量显著降低(P<0.05),SCBC组和SCB组血清谷胱甘肽过氧化氢酶(GSH-Px)活性显著升高(P<0.05),各试验组血清总超氧化物歧化酶(T-SOD)活性显著升高(P<0.05)。4)与对照组相比,各试验组胸肌亮度(L*)值显著降低(P<0.05),SCBC组和SCBP组胸肌红度(a*)值显著升高(P<0.05),SCBP组胸肌蒸煮损失显著降低(P<0.05)。5)与对照组相比,SCBP组腿肌L*值显著降低(P<0.05),各试验组腿肌黄度(b*)值显著降低(P<0.05),SCBP组和SCB组腿肌蒸煮损失显著降低(P<0.05)。由此可见,饲粮中添加高负载硒丁酸梭菌及其后生元均可提高肉鸭生长性能、屠宰性能,改善肉品质,增强抗氧化能力,其效果优于普通丁酸梭菌。The aim of this experiment was to study the effects of Clostridium butyricum and its postbiotics with high-load selenium on growth performance,slaughter performance,serum lipid indices and meat quality of meat ducks.One hundred and eighty healthy 1-day-old Pekin ducks(males)with similar body weight were selected and randomly divided into 5 groups with 6 replicates per group and 6 ducks per replicate.Ducks in the control group were fed a basal diet,and others in experimental groups were fed basal diets supplemented with Clostridium butyricum fermentation broth(CB group),high-load selenium Clostridium butyricum cell(SCBC group),high-load selenium Clostridium butyricum postbiotics(SCBP group)and high-load selenium Clostridium butyricum fermentation broth(SCB group),and the addition amount was 0.3%.The experimental period was 42 days.The results showed as follows:1)compared with the control group,the average daily feed intake and feed to gain ratio during 21 to 42 days of age and 1 to 42 days of age of SCBC,SCBP and SCB groups were significantly decreased(P<0.05).2)Compared with the control group,the dressed percentage of SCBC,SCBP and SCB groups was significantly increased(P<0.05),the eviscerated rate of SCBC and SCBP groups was significantly increased(P<0.05),and the breast muscle rate of experimental groups was significantly increased(P<0.05).3)Compared with the control group,the serum malondialdehyde(MDA)content of experimental groups was significantly decreased(P<0.05),the serum glutathione peroxidase(GSH-Px)activity of SCBC and SCB groups was significantly increased(P<0.05),and the serum total antioxidant capacity(T-SOD)activity of experimental groups was significantly increased(P<0.05).4)Compared with the control group,the breast muscle brightness(L*)value of experimental groups was significantly decreased(P<0.05),the breast muscle redness(a*)value of SCBC and SCBP groups was significantly increased(P<0.05),and the breast muscle cooking loss of SCBP group was significantly decreased(P<0.05).5)Compared with the
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