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sheep
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  绵羊
    Study on absorption of oligopeptides in the small intestine of sheep
    绵羊小肠寡肽吸收规律的研究
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    Study on Genetic Diversity and Breeds Differentiation of Tibet Sheep
    藏系绵羊遗传多样性及其品种(系)分化的研究
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    The Study of Evaluation and Analysis Methods on Phylogenetic Relationships Among Sheep Populations
    绵羊群体间亲缘关系评价及其分析方法的研究
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    A Preliminary Study on the Knockout Myostatin and Knockin mAAT in Sheep Somatic Cells
    绵羊体细胞myostatin基因敲除及定点整合mAAT基因的初步研究
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    Study on Digestion of Dietary Nutrients in Hindgut of Sheep
    绵羊后肠道对日粮养分消化的研究
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    STUDY ON GENETIC VARIATIONS OF FATTY ACIDS PROFILE AND ITS CHARACTERISTICS OF SHEEP BREEDS
    不同肉品种体脂脂肪酸遗传变异性及其特性的研究
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    Identification and Genetic Research on Genes Related to Prolificacy of Little-tailed Han Sheep
    小尾寒多胎性状相关基因的鉴定和遗传研究
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    Study on Candidate Genes of Fecundity and Gene Expression in Small Tailed Han Sheep
    小尾寒多胎性状主要候选基因及繁殖相关基因表达量研究
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    Research and Application for Industrialization of Embryo Engineering Technology in Cattle and Sheep
    牛胚胎工程技术产业化研究与应用
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    A Study on the International Competitiveness of Mutton Sheep Industry in China
    中国肉产业国际竞争力研究
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    The Study on Mechanism of Prolificacy in Hu Sheep
    湖羊多胎机制研究
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    Constrcution of Xinjiang Military Reclamation of Wastel and Type Fine-Fleece Sheep Genome BAC Library and Study on Loci Were Related to MHC Gene of Chromosome 20 Near Region
    新疆军垦型细毛羊基因组BAC文库的构建及20号染色体MHC基因邻近区段相关位1点的研究
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    Studies on the antigenicity and immunogenicity of Clostridium septicum isolated from sheep braxy. I. The analysis of the "O" antigens.
    羊快疫病原腐败梭菌抗原性及免疫原性的研究 Ⅰ、“O”抗原分析
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    ANALYSIS AND APPLICATION OF THE GENETIC PATTERN OF XINJIANG FINE WOOL SHEEP
    新疆细毛羊遗传规律的分析与应用
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    A STUDY ON THE MORPHOLOGY OF 6-, 7-AND 8-DAY EMBRYOS IN SUPEROVULATED SHEEP
    超排母羊6、7和8日龄胚胎的形态观察
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  sheep
Feeding habitats of blue sheep (Pseudois nayaur) during winter and spring in Helan Mountains, China
      
The feeding habitat selection of blue sheep (Pseudois nayaur) was studied by direct observation method in the Helan Mountains, China during winter (from November to December) and spring (from April to June) from 2003 to 2004.
      
We established 25 line transects to collect information on feeding habitats used by blue sheep.
      
Such habitats characterized by 12 ecological factors were preferred as feeding areas by blue sheep during winter.
      
Similar to habitat selection by the species during winter, blue sheep also showed a preference for mountain savanna with tree dominated by Ulmus glaucescens and medium tree density (>amp;lt; 4 individuals / 400 m2) during spring.
      
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This is the second report of the results obtained on the improvement of Mongolian sheep by crossbreeding on the May First State Farm in Charhar, Inner Mongolia, and Chapei State Farm, in Changpei of Hopei Province (Formerly in Charhar). Mongolian ewes on these two Farms were crossed with rams of two finewool breeds-Soviet Merinoes and Caucasians,-and of a Medium-wool breed-Tsigai. all of which were introduced from the Soviet Union. The fleece of the Mongolian sheep on Chapei Farm is composed of 52.95°/o...

This is the second report of the results obtained on the improvement of Mongolian sheep by crossbreeding on the May First State Farm in Charhar, Inner Mongolia, and Chapei State Farm, in Changpei of Hopei Province (Formerly in Charhar). Mongolian ewes on these two Farms were crossed with rams of two finewool breeds-Soviet Merinoes and Caucasians,-and of a Medium-wool breed-Tsigai. all of which were introduced from the Soviet Union. The fleece of the Mongolian sheep on Chapei Farm is composed of 52.95°/o of true wool, 5.86% of hetero-typical fibres and 41.19% of hair (including kemp). When crossed with fine-wool rams, the true wool content rose to 82.32-87.36% in the F_1 generation, to 97.23-97.32% in the F_2 generation. Hair and kemp disappeared entirely on the shoulder sample of F_2, heterotypes decreased to 0.11%, while true wool content rose to 99.89%. The fleece of Mongolian sheep on the May First Farm contains 48.59% of true woo), which rose to 79.48% in the F_1 of Tsigai×Mongolian cross, and 91.17% in the F_1 of Soviet Merino×Mongolian cross. The results indicate that when Mongolian ewes are crossed with rams of finewool breeds, uniformity in fibre type can be attained in two generations. The fleece of F_2 sheep on the Chapei Farm is of 60-64's quality, the bettercared group being slightly coarser. When various groups of lambs and yearlings of F_1 and F_2 on Chapei Farm are compared, it is shown that under unfavourable environmental conditions, animals of the F_2 generation do not grow as fast as those of Ft, their constitution being also weaker than the latter. However, under better conditions, F_2 animals surpassed F_1 in either development of the body, fleece quality or fleece weight. It is evident that feeding and management conditions play a decisive role in animal improvement. The better-cared group of F_2 yearling ewes attained the following averages: body weight-41.3 kgs, height at withers-64.2 cm, fleece weight-4.69 kgs, yolk content of the fleece-20.65%, clean wool yield-53.85%, staple length-7.88 cm, average fineness of the fibres being of 60's quality.

1.察北牧场蒙古羊毛被中含细毛52.95%,一代杂种提高到82.32—87.36%,二代杂种提高到97.23—97.32%,五一牧场蒙古羊细毛含量为48.59%,一代杂种提高到79.48—91.17%。用细毛公羊与蒙古羊杂交,二代以后基本上已达到同质程度。 2.二代杂种羊毛细度为60—64支,营养较好者羊毛略粗。 3.将察北牧场小家畜组和二道渠组的二代杂种加以比较后,表明在不良的生活条件下,二代杂种发育较一代杂种为差,有退化现象。但在管理较为周到的条件下所育成的二代杂种,无论在体格发育和毛质、毛量方面都超过了不良生活条件下的一代杂种,证明主要关键在于饲养管理的条件。察北牧场小家畜组的二代杂种母羊,在一岁时平均体重达41.3公斤,体高64.2厘米,剪毛量4.69公斤,油脂含量20.65%,净毛率53.85%,毛长7.88厘米,细度60支,已达到或接近育种目标。

1.In comparing the immunity of several lots of alum-precipitated vaccine prepared from beef liver infusion broth by cultivation for 2,5,10,15 and 20 days,the 2 days culture has been found most satifactory. 2.The efficacy of the vaccine on guinea pigs was influenced by the body weight.The lighter group showed higher protection. 3.The immunity in sheep began at 72 hours after the inoculation with 2 c.c. of alum-precipitated vaccine and it become solid after 124 hours. 4.The vaccine kept at a temperature...

1.In comparing the immunity of several lots of alum-precipitated vaccine prepared from beef liver infusion broth by cultivation for 2,5,10,15 and 20 days,the 2 days culture has been found most satifactory. 2.The efficacy of the vaccine on guinea pigs was influenced by the body weight.The lighter group showed higher protection. 3.The immunity in sheep began at 72 hours after the inoculation with 2 c.c. of alum-precipitated vaccine and it become solid after 124 hours. 4.The vaccine kept at a temperature of 10-30℃ for 21 months was in- jected into two groups of cattle,first group with 1 c.c.and seccond group with 0.5 c.c.Fourteen days after vaccination,these animals were challerged with 1.5 c.c.of virulent culture the first group showed a pretection of 100% and the second group only 75%.

1.前后2次以2,5,10,15,及20天培养的菌液分别制成明矾菌苗,以海猪比较其效力,结果一次因注射菌液量较小致各种时间培养苗,不显示有区别。另一次则以2天培养苗效力效佳。2.前后2次以5批菌苗,以不同体重的海猪试其免疫力,结果一致表现体重大的(560—700克)效力差,体重小的(320—450)效力好。前者之免疫率为25—50%;平均为42%;后者为75—100%,平均为92%。3.以明矾苗注射缅羊后,3天开始有免疫力,满6天有坚强的免疫力。4.明矾苗在10—30℃保存21个月以后,其效力仍然良好。以1毫升剂重免疫黄牛,获得免疫力100%,0.5毫升获得免疫力75%。

A collection of blood flukes of cattle and sheep was obtained from such districts as Yin Chuan (银川) Ping Lo (平罗), Ling Wu (灵武), Chiu Chuan (酒泉) and Min Hsian (岷县) of Kansu Province.Upon morphological studies, the parasites were identified to be: 1.Ornithobilharzia turkestardca (Skrjabin, 1913) Price, 1929. 2.O.turkestanica var.tuberculata Bhalerao, 1932, 3.O.cheni nov.sp., and 4.O.bomfordi (Montgomery, 1906). Ornithobilharzia cheni, described herein as a new species can be easily differentiated from its...

A collection of blood flukes of cattle and sheep was obtained from such districts as Yin Chuan (银川) Ping Lo (平罗), Ling Wu (灵武), Chiu Chuan (酒泉) and Min Hsian (岷县) of Kansu Province.Upon morphological studies, the parasites were identified to be: 1.Ornithobilharzia turkestardca (Skrjabin, 1913) Price, 1929. 2.O.turkestanica var.tuberculata Bhalerao, 1932, 3.O.cheni nov.sp., and 4.O.bomfordi (Montgomery, 1906). Ornithobilharzia cheni, described herein as a new species can be easily differentiated from its most closely related form, O.turkestardca (Skrjabin, 1913) Price, 1929 by the following salient features: (1) The testes of the present species are larger and arranged as a crowded and overlapped single row, whereas those of the Soviet species are smaller and generally arranged as an irregular, double row.(2) The cuticle of the present species is tuberculated, whereas that of the Soviet form is smooth.(3) The male speeimens of the present species are stained bluish violet (i.e, principally violet), but the female, dark brown; whereas both the male and the female specimens of the Skrjabin's flukes are stained purplish blue (i.e., principally blue).The color reaction based on the different biochemical properties of the two species, is rather certain, provided the same staining conditions are maintained. A key for the identification of the above mentioned four Ornithobilharzia species is appended.

本文详细描述了从甘肃省银川市、平罗县、灵武县、酒泉县及岷县所采集的四种牛羊鸟毕吸虫Ornithobilharzia,其中一种是新种: 1.土耳其斯坦鸟毕吸虫Ornithobilharia turkestanica(Skrjabin,1913)Price,1929。 2.土耳其斯坦鸟毕吸虫结节变种O.turkestanica var.tuberculata Bhalerao,1932。 3.程氏鸟毕吸虫,新种O.cheni nov.sp。 4.彭氏鸟毕吸虫O.bomfordi(Montgomery,1906)。程氏鸟毕吸虫与土耳其斯坦鸟毕吸虫极相似,下列主要特点可将它们区别开来:(i)本种的睪丸较大,按拥挤重叠的单行排列,后者的睪丸较小,按不规则的双行排列; (ii)本种表皮有结节,后者表皮光滑;(iii)本种用苏木素染色,雄虫染成蓝紫色(紫色为主),雌虫染成暗棕色,而后者用苏木素染色后,不论雄虫或雌虫均呈紫蓝色(蓝色为主),这种基于虫体生化性质的不同而引起的染色反应在一定染色条件下是很一致的。除了上述(i)(ii)两点不同外,虫卵也有很大的不同,前者虫卵一端有一小刺,刺端钝圆,另一端有一附着物,较后者大而圆,...

本文详细描述了从甘肃省银川市、平罗县、灵武县、酒泉县及岷县所采集的四种牛羊鸟毕吸虫Ornithobilharzia,其中一种是新种: 1.土耳其斯坦鸟毕吸虫Ornithobilharia turkestanica(Skrjabin,1913)Price,1929。 2.土耳其斯坦鸟毕吸虫结节变种O.turkestanica var.tuberculata Bhalerao,1932。 3.程氏鸟毕吸虫,新种O.cheni nov.sp。 4.彭氏鸟毕吸虫O.bomfordi(Montgomery,1906)。程氏鸟毕吸虫与土耳其斯坦鸟毕吸虫极相似,下列主要特点可将它们区别开来:(i)本种的睪丸较大,按拥挤重叠的单行排列,后者的睪丸较小,按不规则的双行排列; (ii)本种表皮有结节,后者表皮光滑;(iii)本种用苏木素染色,雄虫染成蓝紫色(紫色为主),雌虫染成暗棕色,而后者用苏木素染色后,不论雄虫或雌虫均呈紫蓝色(蓝色为主),这种基于虫体生化性质的不同而引起的染色反应在一定染色条件下是很一致的。除了上述(i)(ii)两点不同外,虫卵也有很大的不同,前者虫卵一端有一小刺,刺端钝圆,另一端有一附着物,较后者大而圆,又前者虫卵要较后者约大一倍。文后根据上述四种吸虫的重要特点制订了一个简单的检索表。

 
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