improvement of breed 中文意思是什麼

improvement of breed 解釋
動物育種
  • improvement : n. 1. 改良，改進，增進；進步。2. 利用，活用。3. 〈美國〉（增高房屋、土地等價值的）裝修，改良措施。4. 更優秀的人，更進步的人。
  • of : OF ＝Old French 古法語。
  • breed : vi 1 （動物）生產，生子，下崽，下蛋。2 懷胎。3 繁殖；育種。4 產生，引起，滋生。 Many animals bree...
  1. Directed on the present situation and existing problems in boosting beef cattle industry based on the yellow cattle improvement in china, the review indicated that several relationships, such as integration of individual households and large scale cattle farms, integration of yellow cattle improvement, crossbreeding, breed conservation and utilization, integration of high grain diet intensified fattening and low grain diet economic fattening, should be handled properly ; and the requirements of profitable cattle industry for increasing reproductive survive rate, using hybrid vigor and improving the weight gain, the main factors affecting economic return of large scale cattle farms and the technology level improvement in cattle industry were duiscussed as well

    本文就近來我國以黃牛改良為特點的肉牛業蓬勃發展現狀與存在問題，指出應處理好養牛經營形式千家萬戶與規模牛場相結合、黃牛肉用與肉役兼用相結合、黃牛改良選育與雜交、保種及利用相結合、高精料強度肥育與低精料適度育肥相結合等幾個問題；並就提高養牛經濟效益對提高繁殖成活率、充分利用雜種優勢、提高日增重的要求和影響規模牛場經濟效益的主要因素及如何提高養牛科技水平等問題提出探討。
  2. Effect of wild boar on breed improvement in domestic pig

    野豬在家豬品種改良中的作用
  3. Now with the development of productivity and the improvement of living level, the target of corn producing is not only grain supply any more. the small scale producing pattern and single breed have the corn producing lacked of superiority

    但是由於各方面的原因，近年來我區玉米生產與銷售都陷入了困境，玉米的比較優勢逐漸喪失，玉米及其相關產業的發展問題提到了日程上來。
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