This paper discusses closed water breeding techniques of eel from the design of the pool, treatment of seed eels and management.

Closed nucleus breeding in a small population inevitably result in inbreeding and decreasing of genetic variance.

小群体的闭锁选育不可避免产生近交及遗传方差下降，导致近期与远期选择效果的矛盾。

Soilless breeding eel can be further divided into running water breeding and closed water breeding.

鳝鱼无土养殖可分为流水无土养殖和静水无土养殖两种类型。

Comparison of Closed Herd Breeding and Opened Selection

全闭锁群体继代选育和开放式选育效果比较

The number of tail bone is different: Henan 26, Hebei 28. Conclusion Because of long closed breeding, KM mice of Henan Medical University are difference at tail length and the number of tail bone from other KM mice. The tail is more longer.

本中心小鼠尾骨节数分别为26，而河北医科大学KM小鼠尾骨为28节。结论：由于长期的封闭饲养，本中心KM小鼠与其它KM小鼠存在差异：尾较长，30周龄长2cm。

Application of Preparation Chromosome with ConA in Closed Breeding Microtus fortis

封闭群东方田鼠染色体制备中ConA的应用技术研究

Observation of Digestive Ability of Adult Microtus Fortis in Closed Breeding

封闭繁殖的成年东方田鼠消化能力的观察

Enzyme Activity Analysis and Directive Breeding of Actinobacillus succinogenes Fermenting Crop Straw Hydrolysate Containing Pentose and Hexose for Production of Succinic Acid

利用秸秆水解液五、六碳糖共发酵产琥珀酸放线杆菌的酶活分析及定向选育

The Superior Poplar Clones Selection Test for Oriented Cultivation in Hubei Province Study on Techniques of Directive Breeding for Bamboo Shoots Forest

湖北省杨树人工林定向培育无性系选择研究集约经营笋用毛竹林定向培育技术探讨

Directive Breeding of Artificial and Natural Mixed Forests in Stony Mountains of East Shanxi

晋东石质山人工天然混交林的定向培育技术

Directive Breeding on Short Tail of KM Mice

定向培育短尾KM小鼠初报

Study on Selection of Directive Breeding for Non-floccus Populus Variety

无絮杨树品种的定向选育研究

Through Continuous Directive Breeding and Selection on the Improvement of Silkworm Cocoon Shell Ratio

连续定向培育和连续定向选择对家蚕茧层率的改良效果

Compound Mutation and Directive Breeding of Adenosine Production Strain

复合诱变定向选育腺苷生产菌

Investigation and analysis on the initial flowering time of 71 sugarcane parents in common use were conducted for five years running at Hainan Sugarcane Breeding Station.

分析了海南甘蔗育种场71份常用甘蔗亲本连续5年始花期调查资料。

A seal lies next to a pool at a seal breeding station in Norddeich, northern Germany.

一只海豹在水池边舒服的躺著，它身在德国北部的诺德代希海豹饲养中心。

From 1994 to 1997, Sheep embryo transplant technigue was conducted in different livestock breeding station.

1994～1997年分别在镇南种羊场宝山分场和白城市牧草良种繁育站等地进行了优质细毛羊胚胎移植技术研究。

Recent Studies on Flowering Induction and Utilization of New Genetic Resources in Sugarcane at Hainan Sugarcane Breeding Station

近年来海南甘蔗育种场甘蔗开花诱导与新种质杂交利用研究

Situation and development of artificial breeding of China forest frog

中国林蛙人工养殖现状及发展方向

With their patience and efforts, they successfully developed a combination of artificial breeding and natural reproduction.

在他们的耐心和努力下,他们成功地开发出一种人工育种和自然繁殖相结合的方法。

Research on artificial insemination and semen freezing and artificial hatching and starting in Grus vipio will promote the reproduction of the crane under artificial breeding.

对白枕鹤类的人工授精、孵化、育雏以及冷冻精液技术的研究，可促进人工饲养条件下鹤类的增殖和种群的繁衍。