The phenomenon of close breeding is prevailing in introduced talents in China western colleges.

When proportion of breeding flock size is fixed, the population size enlarge every 5000, breeding profit and genetic gain will roughly increase 7.21% and 6.60% respectively, and breeding cost will decrease 22.97%.

在育种群规模比例固定的情况下，群体规模每扩大5000只，育种效益平均增加7.21%，遗传进展平均增加6.60%。

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But only enlarge population size, it will decrease breeding efficiency and population multiple breeding gain, we should enlarge breeding flock size and active breeding flock proportion in practice. 5.

育种投入平均减少22.97%，但单一加大群体规模，随着留种公羊数的增加，将降低育种效益和综合遗传进展，在育种实践中应尽量扩大育种群规模和主动育种群比例。

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Conclusion: Getting rid of alabastrums in breeding season we will gain hige-grade and high-yield medicinal herb.

结论：生育期内除去花蕾，才能获得优质高产药材。

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Strict and blocked production management system is modernization swine breeding companies gain benefits'basis, the display of well management and actual capacity is the key of win the market. They couple get a spacious prospect to TV monitor in the usage of the modernization swine breeding companies.

严格封闭的生产管理体系是现代化养猪企业获得效益的基础，良好的企业管理及实力展示又是赢得市场的关键，二者结合使用电视监控在现代化养猪企业中的应用具有广阔的前景。

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Excellent clones are selected for Beijing, through the economical weights analysis and index selection of industrial timber properties such as volume increment, timber total density, fiber length and stem straightness. The comprehensive breeding gain of industrial timber can be higher than 20%.

经过材积生长量、木材全年密度、纤维长度、主干通直度性状经济权重分析和指数选择，为北京点选出8个优良无性系，平均综合育种增益达20%以上。

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The population multiple breeding gain, and breeding profit will reach to 18.631 Yuan RMB and 375.569 Yuan RMB respectively, it will increase 36.83% and 153.41% respectively compared with current breeding scheme of 13.616 Yuan RMB and 148.208 Yuan RMB. 6.

达到最优状态时超细型细毛羊群体综合育种进展和育种效益可达到每母羊每年18.631元和375.569元，比现行育种方案的13.616元和148.208元分别提高了36.83%和153.41%。

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The mean generation interval of the population is 4.176 years and the total breeding gain is 63.198 Yuan.

平均世代间隔为4.176年。

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Assessment of Waste Pollution Risk of Livestock and Poultry Breeding Industry in Fujian

福建省畜禽养殖业废弃物污染风险评估

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Research on the Treatment of Pollution of Livestock and Poultry Breeding Industry in Chengdu

成都市畜禽养殖业污染治理研究

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Carrying Capacity of Livestock and Poultry Breeding Environment System& A Case Study in Chongqing

畜禽养殖环境系统承载力及其应用&以重庆市畜禽养殖环境系统承载力分析为例

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Analysis of Environmental Economics on the Pollution from Livestock and Poultry Breeding

畜禽养殖污染的环境经济学分析

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Analysis on Environmental Impact Assessment in livestock and Poultry Breeding Programs

浅析畜禽养殖业项目的环境影响评价

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Application of Blood Protein ( Enzyme) Polymorphisms in Poultry Breeding

血液蛋白质（酶）多态性在家禽育种上的应用

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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。

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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。

provided by jukuu

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

长沙池鹭繁殖生态研究

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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？

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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

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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%；

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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。

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