微生物制剂对奥尼罗非鱼生长及饲料表观消化率的影响  

Effects of microorganisms on growth performance and apparent digestibility of feed nutrients in Oreochromis niloticus×O.aureus

作　　者：许国焕[1] 吴月嫦[1] 付天玺 张丽 江永明 龚全 

机构地区：[1]广东省微生物研究所,广东广州510070 [2]广东碧德生物科技有限公司

出　　处：《中国饲料》2008年第21期26-28,共3页China Feed

基　　金：广东省科技厅农业攻关计划(2006B20301058)

摘　　要：选用192尾初始体重34.50g左右的健康奥尼罗非鱼,在基础饲料中分别添加相同剂量(活菌含量为3.0×1011cfu/kg饲料)的汉逊德巴利酵母、枯草芽孢杆菌和凝结芽孢杆菌,研究其对奥尼罗非鱼生长和营养物质表观消化率的影响,试验期为56d。试验结果表明:枯草芽孢杆菌和凝结芽孢杆菌,可使奥尼罗非鱼的增重率分别提高12.27%和8.56%(P<0.05),饵料系数分别降低10.92%和8.18%(P<0.05);饲料干物质表观消化率分别提高10.54%和10.07%(P<0.05),蛋白质表观消化率分别提高4.18%和3.63%(P<0.05);汉逊德巴利酵母对生长性能和饲料表观消化率无影响。结果显示,饲料中添加剂量为3.0×1011cfu/kg饲料的枯草芽孢杆菌和凝结芽孢杆菌能显著促进奥尼罗非鱼的生长和其对饲料营养物质的利用。One hundred and ninty-two Oreochromis nilotieus×O.aureus with average initial weight about 34.50g were chosen to investigate the effects of the same dosages （3.0×10^11 cfu/kg feed）of Debaryomyces hanseni,Bacillus subtilis and Bacillus coagulans supplemented in diets on the growth performance and apparent digestibility of feed nutrients in Oreochromis niloticusxO.aureus.The trail period was 56 days.The results showed that compared with the control （non-supple-mented） ,the weight gain rates of Bacillus subtilis and Bacillus coagulaus supplemented groups were increased by 12.27 % and 8.18 %（P 〈 0.05）.The feed coefficients were increased by 10.92 % and 8.18 % respectively （P 〈 0.05）.Compared with the control group,the apparent digestibilities of dry matter in Bacillus subtilis and Bacillus coagulans supplemented groups were increased by 10.54 % and 10.07 % ,and the protein apparent digestibility were increased by 4.18 % and 3.65 %（P 〈 0.05）.The results suggested that 3.0×10^11cfu/kg Bacillus subtilis supplemented with diets could significantly promote the growth of Oreochromis niloticus×O.aureus and the utilization of feed nutrients.

关 键 词：汉逊德巴利酵母 枯草芽孢杆菌 凝结芽孢杆菌 生长 表观消化率 奥尼罗非鱼 

分 类 号：S963[农业科学—水产养殖]