Influence of fish meal quality on growth,feed conversion rate and protein digestibility in shrimp (Penaeus chinensis ) and red seabream (Pagrosomus major)

The effect of fishmeal quality on growth,feed conversion ratio and protein digestibility was studied in a growth experiment with shrimp and red seabream.The shrimp and fish were fed three diets varing in the quality of the fishmeal used in the respective feeds: low quality fish meal,good quality fish meal,and Peru fish meal.The experiment lasted for 2 months.The shrimp and fish fed the feed with good quality fish meal showed significantly better feed conversion ratio,weight gain rate,protein digestibility than the other groups.

云南书局、官书局及其刻书考

清同光年间,各省官书局相继兴办,在"中学为体、西学为用"的实践中扮演重要角色,云南书局顺应时代的需要而产生。本文首先区分云南书局和云南官书局,对云南书局成立于光绪四五年间、云南官书局成立于光绪二十四年的史实作出详细考证,并通过现存局本发现云南书局与云南官书局并存三年的事实。其次,对前人所列局本去伪存真,迄今查实68种650册978卷,其中有20种局本是前人的文中从未介绍的,有6种局本藏于民间而图书馆未有收藏。最后着重介绍局本的版本特征,特别是翻刻新式教科书和践行西方意义上的版权保护行为,这在各省官书局中独具特色。进一步明晰云南书局、官书局发展历程,突显其在云南近代文化史上的重要地位。