breeding gain 中文意思是什麼
breeding gain
解釋
核原料剩餘再生系數-
Development of water - saving agriculture, dry fanning and ecological agriculture, construction of fine quality product centers of gain, cotton, oil and tobacco, well - bred breeding, reform of middle and low yield fields, small watershed control, processing and storage of agricultural and sideline products, production of high - efficiency low toxicity and safe biological pesticide, construction of livestock breeding centers
節水農業、旱作農業、生態農業開發，糧、棉、油、煙優質產品基地建設，良種繁育，中低產田改造，小流域治理，農副產品加工貯藏，高效、低毒、安全生物農藥及高效有機肥生產、養殖業基地建設等。 -
The paper summarized the research for the effects of different grazing intensity on grazing behaviour, grazing grass species and productivity of sheep in recent years, the result showed that : there was a negative correlation between the live weight gain per sheep and the grazing intensity, but there was positive correlation between the live weight gain per hectare and the grazing intensity ; feeding intake of sheep decreased when the grazing intensity become heavier ; there was not significant effect of different grazing intensity on sheep breeding indexes ; as long with the grazing intensity become heavier, the feeding time of sheep increased while resting and idling time decreased, but feeding intake per hundred mouths and daily intake reduced while intake velocity increased ; sheep feeding adaptability is relative ; the light grazing was beneficial to promote mutton quality, but mutton quantity and gross economy benefit was low
摘要根據近幾十年來放牧強度對綿羊放牧行為、採食植物組成和生產性能的影響進行了綜述，得出以下結論：綿羊的個體增重與放牧率之間呈線性負相關，而公頃增重與放牧率之間呈正相關；綿羊的採食量隨著放牧強度的加重而降低；放牧強度對母羊繁殖性能各指標影響差異不顯著；隨著放牧強度的加重，綿羊的採食時間增加，遊走、反芻臥息時間減少；每百口採食量和日採食量減少，而採食速度增加；放牧綿羊的嗜食性是相對的；輕牧有利於提高肉的品質，但是產肉量低，總的經濟效益不高。 -
Classical swine fever ( csf ) is one of major contagious diseases in pig breeding industry. in order to gain massive diagnostic antigen csfv, and large scale of csfv specific major protective antigen protein ( e2 envelope glycoprotein ) in eucaryotic cells, which are prepared into subunit vaccine for effective prevention against csf
豬瘟是危害養豬業的主要傳染病，為了得到大量的豬瘟病毒特異性診斷抗原，並試圖在真核細胞中大量表達豬瘟病毒特有的免疫保護性抗原，即e2囊膜糖蛋白，為進一步制備豬瘟亞單位疫苗有效預防本病奠定基礎。
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