冰鲜杂鱼与颗粒饲料对斜带石斑鱼的对比饲养效果

选择冰鲜杂鱼和2个市场反映较好的石斑鱼配合饲料产品,分别对斜带石斑鱼(Epinephelus coioides)进行饲喂效果实验,通过生长性能、体成分、群体离散度以及养殖成本分析,评价冰鲜杂鱼和配合颗粒饲料在斜带石斑鱼养殖效果上的优劣.同一批培育的斜带石斑鱼幼鱼,随机分成3组(冰鲜杂鱼组、石斑鱼颗粒饲料1组和石斑鱼颗粒...

The Effect Comparisons Between Frozen Trash Fish and Artifical Compound Feed for Grouper( Epinephelus coioides)

Ａ feeding trail was conducted to compare the difference between one kind of frozen trash fish (diet 1) and two artificial compound feeds (diet 2 and diet 3) in growth performance and cost -effectiveness in grouper Epinephelus coioides.Grouper juveniles with an initial body weight of 10.0 g were randomly divided into three groups with triplicate net cages at a stock density of 45 fish per cage.Fish were hand fed one of the three diets to apparent satiation at each meal,twice a day across a feeding period of 7 weeks.The fish receiving frozen trash fish had better weight gain rate,specific growth rate and feeding rate as compared with diet 2 and diet 3;the group dispersion of frozen trash fish was greater than that of the two artificial compound feeds.The whole-body crude protein content was significantly higher,but the crude fat content significantly lower in fish fed with frozen trash fish than that of fish fed with the two artificial compound feeds;however,based on the feed cost per 1 kg of body weight gain,the feed cost of frozen trash fish raised by 3.25 yuan and 4.26 yuan respectively vs the two artificial compound feeds.The results showed that feeding frozen trash fish could achieve faster growth rate and body protein deposition in comparison with feeding artificial compound feeds,but the former is inferior to the latter in feed cost-effectiveness,accessibility,and the consistency of fish size.