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
出 处:《动物营养学报》2025年第1期365-374,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:本试验旨在研究饲粮中添加高负载硒植物乳杆菌及其后生元对肉鸭生长性能、屠宰性能、血清脂质指标、抗氧化能力及胸肌肉品质的影响。试验选取180只健康1日龄雄性北京鸭,随机分为5组,每组6个重复,每个重复6只。对照组饲喂基础饲粮,Ⅰ组饲喂添加植物乳杆菌菌液的饲粮,Ⅱ组饲喂添加高负载硒植物乳杆菌菌液的饲粮,Ⅲ组饲喂添加高负载硒植物乳杆菌后生元的饲粮,Ⅳ组饲喂添加高负载硒植物乳杆菌菌体的饲粮,益生菌添加量均为0.4%。试验期为42 d。结果表明:1)与对照组相比,Ⅱ、Ⅲ组22~42日龄和1~42日龄平均日增重(ADG)显著升高(P<0.05),料重比(F/G)显著降低(P<0.05)。2)与对照组相比,Ⅱ、Ⅲ、Ⅳ组半净膛率显著升高(P<0.05),Ⅱ组屠宰率显著升高(P<0.05)。3)与对照组相比,Ⅲ组血清低密度脂蛋白胆固醇(LDL-C)含量显著降低(P<0.05)。4)与对照组相比,Ⅲ组血清谷胱甘肽过氧化物酶(GSH-Px)活性显著升高(P<0.05),Ⅱ组血清总超氧化物歧化酶(T-SOD)活性显著升高(P<0.05)。5)与对照组相比,Ⅱ组胸肌pH显著升高(P<0.05),Ⅲ组胸肌红度(a*)值显著升高(P<0.05),Ⅳ组胸肌蒸煮损失显著降低(P<0.05)。综上所述,饲粮中添加高负载硒植物乳杆菌及其后生元均可提高肉鸭生长性能、屠宰性能,改善脂类代谢,提高抗氧化能力,改善肉品质。This experiment was conducted to study the effects of Lactobacillus plantarum and its postbiotics with high-load selenium on growth performance,slaughter performance,serum lipid indexes,antioxidant capacity and breast muscle quality of meat ducks.A total of 180 healthy one-day-old male Beijing ducks with similar weight were randomly divided into 5 groups with 6 replicates in each group and 6 ducks in each replicate.The control group was fed a basal diet,groupⅠwas fed a diet supplemented with Lactobacillus plantarum bacterial liquid,groupⅡwas fed a diet supplemented with Lactobacillus plantarum with high-load selenium bacterial liquid,groupⅢwas fed a diet supplemented with Lactobacillus plantarum with high-load selenium postbiotics,groupⅣwas fed a diet supplemented with Lactobacillus plantarum with high-load selenium bacterial cells,and the probiotic addition amount was 0.3%.The experiment period was 42 days.The results showed as follows:1)compared with the control group,the average daily gain(ADG)during 22 to 42 days of age and 1 to 42 days of age of groupsⅡandⅢwas significantly increased(P<0.05),and the feed to gain ratio(F/G)was significantly decreased(P<0.05).2)Compared with the control group,the semi-eviscerated rate of groupsⅡ,ⅢandⅣwas significantly increased(P<0.05),and the dressed percentage of groupⅡwas significantly increased(P<0.05).3)Compared with the control group,the serum low density lipoprotein cholesterol(LDL-C)content of groupⅢwas significantly decreased(P<0.05).4)Compared with the control group,the serum glutathione peroxidase(GSH-Px)activity of groupⅢwas significantly increased(P<0.05),and the serum total superoxide dismutase(T-SOD)activity of groupⅡwas significantly increased(P<0.05).5)Compared with the control group,the breast muscle pH of groupⅡwas significantly increased(P<0.05),the breast muscle redness(a*)value of groupⅢwas significantly increased(P<0.05),and the breast muscle cooking loss of groupⅣwas significantly decreased(P<0.05).To sum up,adding Lactob
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