英语翻译AbstractThis study evaluated the effects of three types of probiotics,two bacteria and one yeast on growth performance in Nile tilapia.Three diets were formulated containing the optimum protein level(40%) for tilapia fry:one supplemented

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英语翻译AbstractThis study evaluated the effects of three types of probiotics,two bacteria and one yeast on growth performance in Nile tilapia.Three diets were formulated containing the optimum protein level(40%) for tilapia fry:one supplemented
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英语翻译AbstractThis study evaluated the effects of three types of probiotics,two bacteria and one yeast on growth performance in Nile tilapia.Three diets were formulated containing the optimum protein level(40%) for tilapia fry:one supplemented
英语翻译
Abstract
This study evaluated the effects of three types of probiotics,two bacteria and one yeast on growth performance in Nile tilapia.Three diets were formulated containing the optimum protein level(40%) for tilapia fry:one supplemented at 0.1% with a bacterial mixture containing.Streptococcus faecium and Lactobacillus acidophilus;a second supplemented at 0.1% with the yeast Saccharomyces cerevisae;and a third,a control diet without supplements.Two additional diets were formulated to contain 27% protein to serve as a stress factor,and were supplemented at 0.1% with either the bacterial probiotic mix or the yeast.The diets were fed for 9 weeks to tilapia fry stocked in 20-l tanks at two densities:a high density of 20 fry per tank as a stress factor;and a low density of 10 fry per tank.Results indicate that the fry fed with diets with a probiotics supplement exhibited greater growth than those fed with the control diet.Of the four probiotic treatments,the 40% protein diet supplemented with yeast produced the best growth performance and feed efficiency,suggesting that yeast is anappropriate growth-stimulating additive in tilapia cultivation.
D 2003 Elsevier ScienceB.V.All rights reserved.
Keywords:Probiotics;Tilapia; Oreochromis niloticus; Streptococcus; Lactobacillus; Saccharomyces
1.Introduction
The demand for animal protein for human consumption is currently on the rise and is largely supplied with terrestrial farm animals.Aquaculture,however,is an increasingly important option in animal protein production.This activity requires high-quality feeds with high protein content,which should contain not only necessary nutrients but also complementary additives to keep organisms healthy and favor growth.Some of the most utilized growth-promoting additives include hormones,antibiotics,ionophores and some salts (Fuller,1992;Gongora,1998;Klaenhammer and Kullen,1999).Though these do promote growth,their improper use can result in adverse effects in the animal and the final consumer,as well as lead to resistance in pathogenic bacteria in the case of antibiotics.
Though probiotics are widely used in poultry and swine rearing,little has been done to incorporate them into aquaculture.Thus,this study was designed to evaluate the use of a bacteria mix containing Streptococcus faecium and Lactobacillus acidophilus,and the yeast Saccharomyces cerevisiae,as probiotic supplements in diets for Nilet ilapia fry.
2.Materials and methods
The experiment was conducted for 9 weeks,using3-week old Nile tilapia(Oreochro- omis niloticus,152.3 mg average weight) fry obtained from the Aquaculture Laboratory of CINVESTAV in Merida,Yucatan,Mexico.

英语翻译AbstractThis study evaluated the effects of three types of probiotics,two bacteria and one yeast on growth performance in Nile tilapia.Three diets were formulated containing the optimum protein level(40%) for tilapia fry:one supplemented
哇,这号多啊!
在这里,先介绍一个英语翻译网站:
我的翻译是:
摘要
这项研究评估的影响,三种类型的益生菌,两个细菌和酵母一对生长性能在尼罗河tilapia.three饮食制订载有最佳的蛋白质水平( 40 % )为吴郭鱼鱼苗:1补充,在0.1 % ,与细菌混合载.链球菌faecium和嗜酸乳杆菌;第二次补充,在0.1 % ,与酵母酿酒酵母cerevisae ;和一个第三,一个控制饮食无supplements.two额外饮食制订包含的27 % ,蛋白质充当应力的因素,并辅以在0.1 % ,无论是细菌性益生菌的组合,或yeast.the饲料饲养9周,以吴郭鱼鱼苗储存在20升坦克在两个密度:高密度的20 % ,南联盟坦克作为一个应力因子;和低密度的10月,南联盟百分之tank.results表明,南联盟喂饮食与补充益生菌,展示更大的增长比美联储与控制diet.of四个益生菌治疗,40 %蛋白饮食辅以酵母制作的最佳生长性能和饲料效率,这表明酵母是anappropriate增长刺激添加剂在罗非鱼的培养.
d 2003年Elsevier公司scienceb.v.all版权所有.
关键词:益生菌;罗非鱼;尼罗罗非鱼;链球菌;乳酸菌;酿酒酵母
1.introduction
需求的动物性蛋白质供人食用的是目前在上升,主要是供应与地面农场animals.aquaculture ,不过,是一个越来越重要的选项,在动物性蛋白质production.this活动需要高品质的饲料蛋白质含量高,其中应包含不仅是必要的养分,而且互补性添加剂,以保持生物的健康和青睐growth.some的最利用促生长添加剂,包括激素,抗生素,ionophores和一些盐(更详尽的,1992年;贡古拉,1998年; klaenhammer和库伦角,1999年)虽然这些做促进经济增长,他们使用不当,可能会导致不良影响,在动物和最终消费者,以及导致耐药性病原菌,在案件抗生素.
虽然益生菌被广泛用于家禽和猪饲养,小已经做了,并将其纳入aquaculture.thus ,本研究旨在评估使用一种细菌混合含有链球菌faecium和嗜酸乳杆菌和酵母酿酒酵母,作为益生菌副刊在日粮nilet ilapia南联盟.
2.materials和方法
实验进行了9周,using3周龄尼罗罗非鱼( oreochro - omis罗非鱼,152.3毫克,平均重量)南联盟从水产养殖实验室cinvestav在梅里达,尤卡坦半岛,墨西哥.

摘要
这项研究评估的影响,三种类型的益生菌,两个细菌和酵母一对生长性能在尼罗河tilapia.three饮食制订载有最佳的蛋白质水平( 40 % )为吴郭鱼鱼苗: 1补充,在0.1 % ,与细菌混合载。链球菌faecium和嗜酸乳杆菌;第二次补充,在0.1 % ,与酵母酿酒酵母cerevisae ;和一个第三,一个控制饮食无supplements.two额外饮食制订包含的27 % ,蛋白质...

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摘要
这项研究评估的影响,三种类型的益生菌,两个细菌和酵母一对生长性能在尼罗河tilapia.three饮食制订载有最佳的蛋白质水平( 40 % )为吴郭鱼鱼苗: 1补充,在0.1 % ,与细菌混合载。链球菌faecium和嗜酸乳杆菌;第二次补充,在0.1 % ,与酵母酿酒酵母cerevisae ;和一个第三,一个控制饮食无supplements.two额外饮食制订包含的27 % ,蛋白质充当应力的因素,并辅以在0.1 % ,无论是细菌性益生菌的组合,或yeast.the饲料饲养9周,以吴郭鱼鱼苗储存在20升坦克在两个密度:高密度的20 % ,南联盟坦克作为一个应力因子;和低密度的10月,南联盟百分之tank.results表明,南联盟喂饮食与补充益生菌,展示更大的增长比美联储与控制diet.of四个益生菌治疗, 40 %蛋白饮食辅以酵母制作的最佳生长性能和饲料效率,这表明酵母是anappropriate增长刺激添加剂在罗非鱼的培养。
d 2003年Elsevier公司scienceb.v.all版权所有。
关键词:益生菌;罗非鱼;尼罗罗非鱼;链球菌;乳酸菌;酿酒酵母
1.introduction
需求的动物性蛋白质供人食用的是目前在上升,主要是供应与地面农场animals.aquaculture ,不过,是一个越来越重要的选项,在动物性蛋白质production.this活动需要高品质的饲料蛋白质含量高,其中应包含不仅是必要的养分,而且互补性添加剂,以保持生物的健康和青睐growth.some的最利用促生长添加剂,包括激素,抗生素, ionophores和一些盐(更详尽的, 1992年;贡古拉, 1998年; klaenhammer和库伦角, 1999年)虽然这些做促进经济增长,他们使用不当,可能会导致不良影响,在动物和最终消费者,以及导致耐药性病原菌,在案件抗生素。
虽然益生菌被广泛用于家禽和猪饲养,小已经做了,并将其纳入aquaculture.thus ,本研究旨在评估使用一种细菌混合含有链球菌faecium和嗜酸乳杆菌和酵母酿酒酵母,作为益生菌副刊在日粮nilet ilapia南联盟。
2.materials和方法
实验进行了9周, using3周龄尼罗罗非鱼( oreochro - omis罗非鱼, 152.3毫克,平均重量)南联盟从水产养殖实验室cinvestav在梅里达,尤卡坦半岛,墨西哥。

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