breeding rate 中文意思是什麼
breeding rate
解釋
繁殖率-
Towards the end of the plover breeding season, the rate of female divorce declines
在鳥的繁殖期快要結束的時候，雌鳥離婚的比率就下降了。 -
Rlean meat percentage is one of the most important economic traints in pig breeding programs. myostatin is a negative regulator of skeletal muscle growth. null or low activity of myostatin, individual muscle of mutant amimals would show a large and widespread increase in skeletal mass. myostatin null animals have significantly larger diameter or more quantity of fiber skeletal muscle. the phenotype was termed double muscling. in order to probe the relation between myostatin and high lean meat rate and plump - hipped trait, we sythesized the c ' 80 amino acids coding sequence of porcine myostatin and costructed the cloning and expressing vector of it
肌生成抑制素（ myostatin ，即mstn ）是近幾年來（ mcpherrona . c等， 1997 ）發現的骨骼肌生長的負調控因子，它主要在骨骼肌中表達。其活性的喪失，會引起動物肌肉的過度發育，肌纖維直徑變大或肌纖維數增加，表現為雙肌癥狀。肌生成抑制素研究的突破將對豬、肉雞、肉牛等畜禽生產性能的提高具有特別重要的意義。 -
Among breeding birds, the rate of the palaearctic species and oriental species is 1 : 3. 87, which showes more characseristics of oriental realm
在繁殖鳥中古北界種類與東洋界種類之比為1 : 3 . 87 ，偏重於東洋界。 -
Indeed, i feel quite sure, from the cut of his clothes, they are made by a first - rate paris tailor - probably blin or humann. he was rather too pale, certainly ; but then, you know, paleness is always looked upon as a strong proof of aristocratic descent and distinguished breeding.
他人長得很英俊，衣服穿得很講究，那一身打扮很有法國人的派頭，臉色有點蒼白，那倒是實在的，但你知道，臉色蒼白正是高貴的特徵呀。 」 -
The results indicate that under the laboratory condition, hormone drugs can enhance the pregnant rate of the tree shrews during non - breeding period, and our method of rearing young tree shrews is convenient and easy to be operateed
表明在實驗室條件下，非繁殖期使用激素類藥物能提高成年樹?的受孕率；被動母乳聯合人工配方乳喂養仔樹?的方法簡單易行。 -
Allied to the breeding programmes are investigations into other associated techniques such as time of planting and seeding rate
與育種項目密切聯系的是進行相關技術的調查，如播期和播種量。 -
The giant pandas ' naturally slow breeding rate prevents a population from recovering quickly from illegal hunting, habitat loss, and other human - related causes of mortality
大熊貓自然繁殖的比率很低限制了種群的快速恢復，來自非法獵取，產地損失，還有其他人為因素影響死亡率。 -
Among 11 bird families which have at least one species breeding in the wild, the escaping rate was significantly higher for four families : sturnidae, timaliidae, cacatuidae, and pycnonotidae ; and the breeding rate was significantly higher for only one family - estrildidae
有11科的鳥種有野外繁殖的紀? ，這11科鳥種中有四科的鳥種逃? ?顯著的高於總逃? ? ，它們分別是椋鳥科、畫眉科、鳳頭鸚鵡科及鵯科；野外繁殖?顯著高於總繁殖?的只有梅花雀科。 -
Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements
利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大 -
Already in deer - breeding farms, sika deers are dying from starvation at a rate of up to 8 animals per day
即使在養殖場，每天也有八頭梅花鹿瀕臨餓死邊緣。 -
( 3 ) the value of p / 0 of c. praecox is 2847. 3 + 1125. 0, and the total value of oci is 3. with the above results, pollen germination rate and seed set rate, all shows that breeding system of c. praecox is facultative hybridization. the breeding system of c. nitens is similar to c. praecox, but it is higher in proportion of self - pollination than that of c. praecox
（ 3 ）蠟梅p / 0值為2847 . 3 1125 . 0 、 oci累計分值等於3 ，與不同處理的花粉萌發率和結實率的結果一樣，都顯示蠟梅繁育系統為兼性異交類型；亮葉蠟梅繁育系統同蠟梅相似，但亮葉蠟梅的自交比例相對較高 -
This paper firstly focused on and evaluated the pollination characteristics of c. praecox, in half - natural habitat of nanjing. we investigated flowering phenology, flowering patten, pollen viability, stigma receptibility, species of visitors, visiting rate of visitors and their foraging behavior. and we also investigated its breeding system, including pollen - ovule ratio ( p / 0 ), out - crossing index ( oci ), pollen grains deposited in stigmas, pollen germination rate and seed set rate with different treatments, from 2002 to 2004
試驗分別在2002 - 2003年和2003 - 2004年冬季進行，研究內容包括：花期物候觀察、花部形態觀察和統計、雌雄配子體功能測定、訪問昆蟲種類、訪問行為、訪花頻率和效率；同時對蠟梅繁育系統進行了檢測，檢測內容包括花粉胚珠比（ p / 0 ） 、雜交指數（ oci ）及不同處理花粉萌發率及結實率檢測等等，同時還進行了蠟梅與亮葉蠟梅傳粉過程比較。 -
Rate of new lines provided to yield trials is 16. 94 % for anther culture breeding, 1. 49 times that of the conventional breeding ; and the rate of improved variety obtained from anther culture is 0. 93 %, 3. 32 times comparing with that from conventional breeding
經花培入選的產量鑒定新品系的選擇效率為16 . 94 % ，是同期常規新品系選擇效率11 . 34 %的1 . 49倍；經花培育成的審定品種的選擇效率為0 . 93 % ，是同期常規育成審定品種選擇效率0 . 28 %的3 . 32倍。 -
The result showed that the activity of protease should be concerned, as well as the specific growth rate of spores when selecting and breeding the excellent strains
實驗表明選育優良的米曲?菌株不僅要考察菌株的蛋白酶活力，也要考慮菌株孢子的比生長速率。 -
Now, the general tendency in the world freshwater fish breeding field is : the change from " extensive " to " intensive ". but in our country, the actuality of freshwater fish breeding is : low unit production rate little economic benefit severe pollution bad sustainability
世界淡水養殖業「由粗放型向集約型轉變」的總趨勢，引出了對我國淡水養殖業「單位產量低、效益低、污染嚴重、可持續性差」 ? ?這一現狀的思考。 -
In the breeding industry, for years, feeders have typically added certain amounts of antibiotics and chemicals in their feed in order to pursue economic benefits and the growth rate of livestock and poultry, which results in drug residues in livestock and poultry products in excess of acceptable levels established by generally accepted standards
在飼養業中，飼養者為追求畜禽的生長速度和經濟效益，通常在飼料中添加一定劑量的抗生素和化學制劑，致使畜禽肉類藥物殘留嚴重超標，天然風味受到破壞，不僅影響出口創匯，而且有損於人體健康。 -
A strategic adjustment of agriculture and rural economic structure should be taken to promote the utilization rate of soil and water resource, according to " china ' s guidelines of sustainable development in the 21st century. " agricultural sustainable development can be kept by adjusting the inner structure of farm production and breeding production, bettering the regional distribution of agriculture, quickening the agricultural industrialization and speeding up the progress of techniques of town enterprises and the system renovation
摘要根據《中國21世紀初可持續發展行動綱要》的要求，必須對農業和農村經濟結構進行戰略性調整，提高土地和水資源的利用率，減少對環境的污染和對生態環境的破壞；調整種植業、養殖業內部結構，優化農業生產區城布局，大力推進農業產業化經營，推進鄉鎮企業技術進步和體制創新，實現農業可持續發展。 -
Of the 33 seedlings there were 7 seedlings containing pap gene detected with pcr and southern - blot, transformation - rate was 2. 2 %. this developed a new material for the wheat virus - resistance breeding
實驗結果顯示有33株小麥發病程度明顯減輕，經分子檢測其中有7株含有pap基因，轉化率為2 . 2 。 -
It concludes popularize scientific breeding knowledge and measures to decreased the rate of the birth defects and cerebral palsy are key to reduce the mortality of sick and disabled children
提示加強優生優育的健康教育，注意孕婦孕期和圍產期保健，減少出生缺陷和腦癱的發生率，是降低病殘兒死亡率的關鍵。
分享友人