Conservationists are concerned the drop in productivity, as a result of a lack of sandeels, will mean fewer breeding birds and continued decline of key species.
海鳗数量的减少会导致海鸟生育能力下降，也就是说，繁殖鸟以及一些重要的鸟类数量会继续减少。 对此，自然保护主义者表示密切的关注。
Pregnancy tests are conducted by ultrasound and, if found negative, sows return to the breeding area. The ability to pregnancy-test greatly increases farm productivity.
母猪是否怀孕可用超声波检测，如果发现未怀孕，就会返回原来饲养的地方，通过检测可以增加猪场的生产能力。
Accordingly, we have shifted our breeding objectives from increasing productivity into improving palatability of rice varieties.
因此，人们已将育种目标从高产转向口感良好的水稻品种。
Applying Functional-Structural Plant Models (FSPMs) to simulate crop growth, development, productivity and Assist to analyse and discover morpho-physiological traits for breeding;
应用作物结构 功能模型FSPM分析与模拟逆境下作物生产力，辅助分析挖掘抗逆形态和生理特征；
03 3 hogs marketed per breeding animal is a very close estimate of productivity of USA-Canada's swine industry.
每头种猪出栏19.03头生猪是对美国-加拿大养猪行业一个非常接近的估算。
03 3 hogs marketed per breeding animal is a very close estimate of productivity of USA-Canada's swine industry.
每头种猪出栏19.03头生猪是对美国-加拿大养猪行业一个非常接近的估算。
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