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diet     
相关语句
  饲料
    Effect of Diet Quality and Ration Level on Growth and Activity of Fishes with Different Feeding Habits
    饲料质量和摄食水平对不同食性鱼类生长和活动的影响
短句来源
    STUDY ON FORMULATE DIET FOR PARENT SCALLOP
    扇贝亲贝配合饲料的研究
短句来源
    A oxidative rancidity analysis of fish diet,lipid and the oxidqtive rancidity to influence of diet quality
    鱼类饲料油脂氧化酸败分析及对饲料质量影响探讨
短句来源
    Tilapia nilotica were used as experiment objects in this study and their initial body weight was(106.16±16.77)g. Wheat basal diet was set as control. Tested diets were wheat basal diet mixed with different levels of xylanase(0.05%,0.10%,and 0.15%).
    以尼罗罗非鱼(Tilapia nilotica)为实验对象,初始体质量为(106.16±16.77)g,以小麦基础饲料为对照,小麦基础饲料中分别添加不同质量百分比水平的木聚糖酶(0.05%、0.10%、0.15%)作为实验饲料
短句来源
    In the growth trial,720 juvenile Jian carps(Cyprinus carpio var.jian) with initial body weight of(10.29±0.10)g were averagely allocated to 5 groups with 3 replications each,fed isonitrogenous(330.0 g·kg-1diet) diets with white fish meal protein replaced by 0,25%,50%,75% and 100% dehulled soybean meal(DSBM) protein for 9 weeks,respectively.
    幼建鲤(Cyprinus carpiovar.jian)初始体质量(10.29±0.10)g,分别饲喂去皮豆粕蛋白占总蛋白0、25%、50%、75%和100%的等氮饲料代替白鱼粉蛋白,进行为期9周的生长实验。
短句来源
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  日粮
    6-week feeding trial by commercial diet with supplements of 0,30,70,110,150 and 190 mg/kg Zn was conducted to determine the optimum zinc supplementation level of juvenile cobia(Rachycentron Canadum).
    在基础日粮(锌含量为75.47mg/kg)中分别添加锌0、30、70、110、150和190mg/kg,制成6种试验日粮,分别投喂军曹鱼幼鱼6周。
短句来源
    The first group was the control fed with basal diet, the others were the treated groups fed with basal diet added 500,1000,1500, 2000U/kg phytase respectively.
    在基础日粮中分别添加0、500、1000、1500、2000U/kg的植酸酶,饲养90天,测定增重率;
短句来源
    In the second experiment,90 one-year-old AUogynogenetic Crucian Carp fingerlings (average initial weight ,17g) were randomly allotted into three treatments for 45 days. Treatment 1 was control group fed with basal diet, group 2 and group 3 were the treated groups fed with diets congtaining 0.02% Bacillus licheniformis,combination of 0.01% Bacillus licheniformis and 0.01% XOS respectively.
    试验二 选用90尾一龄异育银鲫鱼种,随机分成3组,第1组为对照组,饲喂基础日粮,第2、3组在基础日粮中分别添加0.02%地衣芽孢杆菌、0.01%XOS+0.01%地衣芽孢杆菌,饲养45天,分别测定鱼体的增重率、肠道消化酶活性、肝胰脏消化酶活性,进行肠道菌群分析。
短句来源
    The result shows that in the carp diet containing 40% of fish meal, the optimum adding level is as follows: phosphorus is 0. 6%,iron is 50ppm, zinc is 100ppm ,magnesium is 800ppm.
    结果表明,含鱼粉40%的鲤鱼日粮中磷、铁、锌、镁的最适添加水平为磷0.6%、铁50ppm,锌100ppm、镁800ppm;
短句来源
    The author has studied the optimum adding level of phosphorus、iron、zinc and magnesium in the carp diet which contains 40% of fish meal and its influence on the content of mineral elements in bones and livers.
    对含鱼粉40%的鲤鱼日粮中磷、铁、锌、镁的添加水平及其对骨骼、肝脏中矿物元素含量的影响进行了研究。
短句来源
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  饵料
    Optimum content of protein in artificial diet for Epinephelus akaara
    赤点石斑鱼人工配合饵料中蛋白质最适含量的研究
短句来源
    Feeding rice field eel(Monopterus albus)for 8 weeks by rice field eel'formula diet that substituted equal nitrogen fish meal' separately with soybean meal,meat bone meat by 0.0%,7.5%,15.0%,22.5%,30.0%,37.5%.
    分别用肉骨粉和豆粕为蛋白源等氮替代0%、7.5%、15.0%、22.5%、30.0%、37.5%的鱼粉,对平均体重8.05g的黄鳝(Monopterus albus),进行生长试验,结果表明:随着肉骨粉和豆粕在饲料中含量的增加,黄鳝增重率下降,饵料系数增加,蛋白质利用率下降;
短句来源
    This study setting four groups that protein content in the diets are 48.23%,51.43%,54.09%and 56.22%respectively to investigate the suitable content of protein in artificial diet for Epinephelus malabaricus.
    设置4组配合饵料蛋白含量分别为48.23%、51.43%、54.09%和56.22%的试验组研究点带石斑鱼人工配合饵料中蛋白质的适宜含量.
短句来源
    After 40d growth trial,the fish fed the diet containing protein concentration of 51.43% attained the highest weight gain was 0.93±0.06g·d-1,specific growth rate was 3.72%±0.12%d-1,feed conversion ratio was 0.54±0.01 and protein efficiency ratio was 363%±3.8% among groups.
    经过40 d的试验,得出饵料蛋白含量为51.43%的试验组的日均增重量为0.93±0.06 g. d-1、特定生长率为3.72%±0.12%d-1、饵料系数为0.54±0.01,蛋白质效率为363.0%±3.8%,均为最佳.
短句来源
    The regressional analysis reveals the the suitable content of protein in the artificial diet for Epinephelus malabaricus is 52.1%.
    经回归分析,点带石斑鱼人工配合饵料中蛋白质适宜含量为52.1%.
短句来源
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  食物
    The development of feeding and digestive organs, the diet and feeding behavior of larval Chinese snakehead fish Channa argus at the age of 1~20 days and with a total body lentgh of 3.9~21.0 mm were studied in the paper.
    研究日龄1~20d,全长3.9~21.0mm的乌鳢仔鱼摄食和消化器官的发育特征,仔鱼的食物组成及其选食行为。
短句来源
    The threshold of diet density acting on reproduction switch of \%Moina mongolica\% ranged from 2×10\+3 to 5 × 10\+3 cells/mL, the threshold of population density was 0.3 individual /mL, the upper threshold of low temperature was 16℃.
    影响蒙古裸腹氵蚤繁殖转化的食物小球藻密度阈值在2 ×103 ~5 ×10 3 个/ m L 之间, 种群密度下限阈值为03 个氵蚤/ m L, 低温上限阈值为16 ℃。
短句来源
    The results showed that the differences of body color between wild and cultured fishes come from the different xanthophyll content in diets, the addition of xanthophyll could improve body color of walking catfish and the feeding strategy for pigment was adding xanthophyll 100 mg·kg-1 in diet for adult walking catfish or xanthophyll 50 mg·kg-1 for fingerling. 
    上述结果表明,养殖与野生胡子鲶体色的差异主要来源于食物中叶黄素含量的不同,在饲料中添加叶黄素类产品可有效改善养殖胡子鲶体色,叶黄素适宜添加量建议为100mg·kg-1饲料(成鱼)或50mg·kg-1饲料(鱼种)。
短句来源
    The results indicated that the diet species fed by small yellow croaker had 24 species,with fishes and crustaceans as the main groups,which accounted for 93.7% of the food weight.
    结果表明,小黄鱼摄食的饵料种类多达24种,鱼类和甲壳类是其主要的饵料类群,两者在食物中所占的重量百分比之和为93.7%。
短句来源
    Diet composition and seasonal variation in feeding habits of small yellow croaker Pseudosciaena polyactis Bleeker in the central Yellow Sea
    黄海中部小黄鱼的食物组成和摄食习性的季节变化
短句来源
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      diet
    Chinese Early Cretaceous birds had experienced a significant differentiation in morphology, flight, diet and habitat.
          
    For each test group, 20 loaches with similar body size (5.17-7.99 g; 11.79-13.21 cm) were selected and kept in aquaria with dechlorinated water at (22±1)°C and fed a commercial diet every 48 h.
          
    Diet composition of post-metamorphic bullfrogs (Rana catesbeiana) in the Zhoushan archipelago, Zhejiang Province, China
          
    The analysis of the stomach contents shows that, for adult bullfrogs, the most important prey (by diet volume) overall were Decapoda, Coleoptera, Odonata, Mesogastropoda, Raniformes, and Cypriniformes.
          
    Moreover, the prey size and diet volume increased with the body size of both adult and juvenile bullfrogs.
          
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    This herbivorous bream (Megalobrama amblycephala Yih) occurs wild in certainlarge and median-sized lakes of the mid-lower Yangtze basin and was not found elise-where.Since its recognition in 1955 as a new species distinct from Megalobramaterminalis,to which it bears a superficial resemblance,it has been subjected to generalbiological studies as well as pond-culture experimentation.Observations made in our hatcheries indicate that this bream is much more resis-tant to bacterial diseases than the well-known grass...

    This herbivorous bream (Megalobrama amblycephala Yih) occurs wild in certainlarge and median-sized lakes of the mid-lower Yangtze basin and was not found elise-where.Since its recognition in 1955 as a new species distinct from Megalobramaterminalis,to which it bears a superficial resemblance,it has been subjected to generalbiological studies as well as pond-culture experimentation.Observations made in our hatcheries indicate that this bream is much more resis-tant to bacterial diseases than the well-known grass carp (Ctenopharyngodon idellus),which is highly esteemed by our pisciculturists on account of its big size,quickgrowth,tastefulness,and herbivorous food habit,yet on the other hand,it is alsonotorious for its susceptibility to bacterial infections.Except for the smaller size,this bream has as many favourable features as the grass carp and is,in other respects,even superior to the latter.Of particular interest is that this bream can matureand breed spontaneously in ordinary fish ponds.In middle Hupei,this bream spawns from late April to early June.Its eggs,like those of the common carp and goldfish,are of the adhesive type and can beincubated in the same way as for incubating goldfish eggs.But the rearing of itsfry,which are so small and delicate,is more difficult.In our experimentation forrearing the fry,better results have been obtained by letting the eggs and the newly-hatched larvae stay in the hatching pond until the fry grow to inch-sized fingerlings,in contrast to the ordinary practice (for various carps) in which the fry are to betransferred to the rearing pond shortly after they become capable of swimming abouthorizontally.At a water temperature of 26—28℃,the eggs hatch in 24—30 hours,with anaverage hatching rate of 60% both in indoor incubation and in the pond.When the yolk sac of the larvae is nearly absorbed,the fry feed first on rotifersand nauplii,but soon become large enough to feed on cladocerans and copepods.Ifthe pond is rich in zooplanktaon,the fry will grow fast with little mortality.Theproduction of natural food organisms should be promoted by manuring the hatching-rearing pond,although care should be taken not to overfertilize.Fingerlings of this bream when reared in ponds even without any prophylacticprecautions will grow nicely on vegetable diet and very rarely get bacterial infections,so they have much better chance of surviving as compared with the grass carp.Thisis also the case with the yearling cultures.Experimental polycultures with bream andgrass carp indicated that the bream had a survival of 84—89%,while the grass carp had a survival of only 14—14.5% because of bacteriai infections.Fingerling bream 10—13 cm in total length stocked in the pond at the rate of2500—3000 fish per mou will in the course of one year attain to a weight of 300 gramsper fish,which is a good size for the market,whereas fingerling grass carp usuallytakes two years to grow to its market size,thus the tempo of pond utilization can bequickened one year by raising the bream.The bream is fairly tame and easy to seine.In pond culture,the first seiningwould catch about 70% of the individuals present.In short,this bream has many favourable features to fullfil the requirements ofan excellent fresh-water food fish and is worthy of being propagated and raised.Ithas already been successfully cultured in most provinces of our country at present.

    团头鲂原是一种野生的草食性淡水鱼类,从1960年起对它进行了一系列的观察试验,肯定它有以下六个优点:(1)在池养条件下,性腺能发育成熟;(2)以各种草类为主要食料;(3)抗病力强、成活率高;(4)容易捕捞、起水率高;(5)含肉量高,脂多、味美;(6)一年半可长至商品规格。试验结果证明团头鲂可以作为新的养殖对象,同时也提供了一套繁殖、饲养管理方法。1964年到1973年已有二十一个省市先后进行移殖饲养,有的已就地繁殖、推广。本文系历年试验和部分移殖经验的总结。

    The diet ingestion and absorption of Schmackeria dubia and Artemia Salina were investigated with 1C NaH14CO3 )or35S(35S-Methionine)labelling tcchnigue and the following results were obtained.Using labelled Plarymonus sp. and Nitzchiu closterium as diet-phyto-planktons, the filtering rate of S. dubia as well as A. salina decreases differently with the raising of the diet density within a certain limit, and remains at a lower rate in raising the diet density still further. The turning point...

    The diet ingestion and absorption of Schmackeria dubia and Artemia Salina were investigated with 1C NaH14CO3 )or35S(35S-Methionine)labelling tcchnigue and the following results were obtained.Using labelled Plarymonus sp. and Nitzchiu closterium as diet-phyto-planktons, the filtering rate of S. dubia as well as A. salina decreases differently with the raising of the diet density within a certain limit, and remains at a lower rate in raising the diet density still further. The turning point was found to be near 105 individuals/ml. in the case of platymonus feeding.The absorbance increases with the raising of the diet density up to a certain level.The filtering rate, feeding rate and absorbance increase markedly with the development of the animals.The absorption efficiency decreases with the increase of the diet density, and remains at a lower level in further raising of the diet density.It seems that superfluous feeding may be encountered in higher level of diet density.

    用~(14)C(NaH~(14)CO_3)和~(35)S(~(35)S-甲硫氨酸)标志扁藻及菱形藻来探讨双齿许水溞与咸水丰年虫的摄食和吸收问题,得到如下结果: 在一定的饵料密度范围内,清滤率随着藻类密度的增大而下降,在藻类密度增至某值后即稳定在一较低的水平上。 吸收率随藻类密度的增大而增大,并在某密度下达到最大值,此后就保持不变。我们称这一密度值为最适密度。 清滤率,摄食率和吸收率随着浮游动物的生长发育而增大,许水溞自挠足幼体到成体及丰年虫在体长7—10mm到性成熟时(10—14mm),清滤率,摄食率和吸收率均明显地增大。 吸收效率随着饵料密度的增大而降低,并在某一密度下稳定于一个较低的水平上。 当饵料密度过高时,将产生过剩摄食。

    The food ingestion and abso ption in the larva of Palacmon carinicauda were investigated with 35S ( 35S-Methionne) labelling technique and the following results were obtained.The feeding habit conversion from phytophage to predacity occurs in late zoea-II to zoea-III.Using labelled Artemia salina, Brachionus urceus and Schmacleria dubia as det-zooplanktons, the predatory rate in different larva stages of P. carinicauda increases with the rai ing of the diet density up to a certain level, and maintains...

    The food ingestion and abso ption in the larva of Palacmon carinicauda were investigated with 35S ( 35S-Methionne) labelling technique and the following results were obtained.The feeding habit conversion from phytophage to predacity occurs in late zoea-II to zoea-III.Using labelled Artemia salina, Brachionus urceus and Schmacleria dubia as det-zooplanktons, the predatory rate in different larva stages of P. carinicauda increases with the rai ing of the diet density up to a certain level, and maintains at that level in raising the density still further. Esrenti-ally, the absorbance varies with the density of the diet on the same trend.The food utiliza ion rate in larva of P. carinicavda decreases with the raising of the diet density, and remains at a lower level in raising the density still further.The Predatory rate and absorbance increase markedly with the develo-pment of the larva.Suse fluous feeding may be ercourtered where the diet density is higher than the optimal density.

    本文用~(35)S-甲硫氨酸作标志,测定了脊尾白虾〔Palaemon(Exopalaem-on)carinicauda Holthuis〕幼体对饵料的摄食与吸收的特点,所得结果表明: 在溞—Ⅱ后期至溞—Ⅲ期从滤食性转变为捕食性。用标志的咸水丰年虫和双齿许水溞的无节幼体及轮虫为动物性饵料,测得脊尾白虾幼体的捕食率随着饵料密度的增大而增大,在某一密度下达到最大值。吸收率变化的情况与此相似。脊尾白虾幼体对饵料的利用率在一定界限密度之上随着饵料密度的增大而降低,并在某一密度下稳定于较低的水平上。捕食和吸收能力随着脊尾白虾幼体的发育而增强。当饵料密度高于最适密度时,产生过剩摄食。

     
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