Application of Blood Protein ( Enzyme) Polymorphisms in Poultry Breeding

Great progress has been made in poultry breeding in the past 20 years.

过去几十年的家禽育种实践已经取得了相当大的进展。

Study on the activities and biomass production of breeding population of Chinese pond heron ARDEOLA bacchus.

池鹭繁殖种群数量、活动规律和生物生产量的研究。

A study of the breeding ecology of Chinese pond heron in Changsha

长沙池鹭繁殖生态研究

What is the best way to prevent mosquitoes from breeding in the pond outside the house?

预防蚊子在屋外池塘繁殖的最有效方法是什么？

Isolation and Identification of Photosynthetic Bacteria from the Breeding Shrimp Pond

对虾养殖池底泥中光合细菌分离及其生物学特性

The percent of the Iosed amount of the animals' feces pollution 、 domestic living pollution 、 chemical fertilizer pollution and fish breeding pond pollution was separately 29.49%, 50.86%, 16.68% and 2.98%;

畜禽粪便污染源、生活污染源、化肥污染源、精养鱼塘污染源流失污染物分别占总量的29.49%、50.86%、16.68%和2.98%；

Suzhou and Yangzhou were polluted corresponsively by animals' feces pollution 、 domestic living pollution 、 chemical fertilizer pollution and fish breeding pond pollution.

苏州、扬州两地畜禽粪便污染、生活污染、化肥污染和精养鱼塘污染均占一定的比例。

Discuss on Anti-osmosis Measure and Effect of Perch Breeding Pond

高位池养殖防渗透措施及效果讨论

By means of orientational observation in the field, flowering phenology, flowering dynamic, kinds of pollinators and their behavior and visiting frequency were observed and the breeding system, pollen-ovule ratio ( P/ O) and pollen viability were determined.

通过野外定位观测，对柽柳的开花物侯、开花动态、访花者的种类、行为和访花频率，并对其繁育系统、花粉.胚珠比（P/O）、花粉活力进行了检测。

The mean generation interval of flock is 7.270 years of the current breeding scheme and the ratio input and output is 1: 5.76. But the present use-age of dam and sire is irrational.

现行的育种方案各选择组公母牛使用年限不合理，育种成效不甚理想，全群平均世代间隔7.270年，投入产出比为1：5.76改进余地很大。

The feed efficiency in the subsystem of livestock breeding and the ratio of coverting the feed to pork energy were high.

家畜养殖亚系统饲料转化率高，转化为肉能比例较大。

The homogeneous model results show that the tritium breeding ratio would reach 1.20 for Be and Li_4SiO_4 volume ratios from 2 to 6. A realistic, sandwich-type design of the Be and Li_4SiO_4 loadings was used for a geometric approximation of the optimized volume ratio.

根据均匀混和模型的结果，在Be和Li4SiO4的体积比为2至6之间，氚增殖率最大可达1.20。

The main concern of the study has been the assessment of the spacial distribution of the tritium breeding ratio, the plutonium breeding ratio, and the power density in multi-dimensional configuration and the comparison between One-, two-, three-dimensional global calculation.

重点分析了多维几何中造氚率、造钚率及功率密度的空间分布，比较了一维、二维和三维积分量的计算结果。

A tritium breeding ratio of 1.158 was obtained for a 2 ∶ 1 Be and Li_4SiO_4 volume ratio in the front part, which satisfies the tritium self-sufficiency condition for the fusion reactor.

因此，采用Be和Li4SiO4夹层布置，在几何上逼近最优体积比，选择前端Be和Li4SiO4体积比为2时，氚增殖率达到1.158，能够较好地满足聚变运行的氚自持条件。

Results show that the proposed TBM concept has the advantages of higher tritium breeding ratio ( TBR), simple structure design and engineering feasibility.

设计和分析结果表明，所提出的设计具有高氚增殖率、结构简单和工程上可行的特点。

Comparative Study on the Breeding Rate in Artificial Inseminated Blue Fox under the Influence of LRH-3 、 HCG 、 PMSG

LRH-3、HCG、PMSG影响人工授精（AI）蓝狐繁殖率的比较研究

And it is not come up to the whole country average standards from all stock group quality to breeding rate, produce rate, commodity rate and meat products.

从整个畜群质量到繁殖率、出栏率、商品率和产肉量，均不及全国平均水平。

The rate of cow's oestrum fecundation is one key factor of cattle's breeding rate.

奶牛情期受胎率是影响奶牛繁育率的重要因素之一。

The Stability of the Intraspecific Competition System for the Natural Enemies Which Possess Functional Breeding Rate or Capturing Rate

具有函数放养率或捕获率天敌有种内竞争系统的稳定性

The Effect of Low Dietary Calcium Intake During Pregnancy on the Breeding Rate in rats

妊娠期低钙饮食摄入对大鼠出产率的影响