varietal development 中文意思是什麼
varietal development
解釋
品種演變- varietal : adj. 1. 有變異的，變種的。2. （具有某種特性的）品種的。adv. -ly
- development : n. 1. 發展，發達；進化。2. 展開；擴充；開發。3. 發達物，新事物，發展階段。4. 【生物學】發育（史）；【軍，數】展開；【攝影】顯影，顯像；【音樂】展開（部）；研製，研製成果。
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It could improve carcass quality meat quality, reproductive ability of livestock, and was indispensible matter for normal elaboration of livestock ' s varietal performance. up till now, biotin could only be gained by the method of chemical synthesis and only imported from the foreign countries, and its price was very expensive and seriously restricted the development of our country ' s animal husbandry
由於生物素能夠提高家畜胴體質量和改善肉質，提高家畜繁殖力，是家畜品種性能正常發揮所必需的物質。目前，生物素只能通過化學合成方法獲得，且均從國外進口，價格昂貴，制約了我國畜牧科技和產業的發展。
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