The results showed that after 15 generations of passage in Hailanbai chickens prepatent period of E. tenella SX010323 was reduced from 141 hours to 120 hours; the oocysts were apparently smaller than the parental strain; examination of endogenous development showed that the second generation schizogony of the selected precocious Shanxi line was incomplete; The LD50 to 11-day chickens of parental strain and precocious strains were 7.52×104, 27.64×104 respectively; the precocious parasite is less pathogenic than the parental strain and has a reduced reproductive potential, but remains the immunogenicity of the parental strain.
结果表明：经过海兰白雏鸡15次传代之后，E.tenella SX010323潜隐期由141 h 缩短至120 h，卵囊明显缩小。
More bovine diseases are associated with postpartum period than with others in dairy cows. Postpartum diseases include reproductive and metabolic disorders, such as retained placenta, metritis, milk fever, Ketosis, displaced abomasums, laminitis, traumatic reticulitis, and mastitis et al.
乳牛在分娩之后发生疾病的机率较其他时期更为频繁，这些产后疾病包括胎衣滞留、子宫炎、乳热、酮病、第四胃异位、蹄病以及创伤性蜂巢胃炎和乳房炎等。
During the study period, we found that plants were present only in natural creek banks, but not altered ones. Comparisons between natural banks without plants and altered banks revealed no significant difference in both shrimp abundance and distribution. However, there was significant difference in shrimp abundance when natural banks with plants and altered banks were compared, suggesting that construction might have negative effects on plants and, in turm, on shrimp abudance. Comparisons between reproductive and non-reproductive season yielded significant results in both shrimp abundance and distribution, which resulted from the recruitment of juveniles to local populations.
在实验期间，自然河段有水蕴草而整治河段没有水蕴草的存在，比较无水蕴草的自然河段与整治河段，发现无论是数量或出现率都没有显著差异，然而，在有水蕴草存在的自然河段之多齿新米虾数量与出现率则较整治河段高，显示哈盆溪可能因为整治工程影响了底质的型态，导致水蕴草不易生长，进而影响多齿新米虾的数量及出现率；在季节方面，结果显示，不同季节在数量和出现率上都有显著差异，而此差异是因为幼虾在生殖季大量加入族群所致。
Nthates to vegetative parls(1st period), and then to both vegetative and reproductive parts (2nd period), and at last all to reproductive parts (3rd period). This pattern differs from those published before in which a...
用Pontryagin最小值原理和奇异最优控制的条件证明了光合产物的最优分配方法是：在营养和生殖生长并行阶段，群体叶片的死亡量恰好等于新形成量，植物干重随时间线性增加。
4The reproductive activity are fairly between the adipose mesenchymal stem cells and bone marrow mesenchymal stem cells, the postdigestive 2nd and 5th generation cells have 6-9 days log phase growth after the latent period about 24-48 hours, then transit to the platform period.
4脂肪间充质干细胞的增殖能力与骨髓间充质干细胞相当，消化后的第2、5代细胞经历24～48小时的潜伏期后，进入6～9天的对数生长期，然后过渡到平台期。
This research utilize Methyl Jasmonate as an inducerto spray on the leaf of soybean, in order to investigate the effect of MeJA on the pathway ofisoflavone metabolism, dynamic trend of primary metabolites, secondary metabolites and relatedenzyme in the period of reproductive growth in soybean, and analyse the correlation between eachother as well.
本试验利用外源茉莉酸甲酯为诱导物，对大田栽培的大豆进行叶面喷施，旨在研究其对大豆异黄酮代谢途径的影响；大豆生殖生长过程中初生代谢物、次生代谢物以及相关酶类活性的动态变化和三者的相互关系，构建大豆异黄酮类次生代谢物的研究平台。
The precocious, summer-sown reproductive period of 85 days, spring 105 days.
中早熟，夏播生育期85天，春播105天。
Medium-maturing, spring reproductive period of 110 days, summer-sown 98 days.
中熟，生育期春播110天，夏播98天。
The concentration in ear was higher than that in internode. During the reproductive period, the biomass of grain increased dramatically.
茎叶中PAH15含量则从幼穗期到枯熟期呈现逐渐下降的一般趋势，且穗梗含量高于稻茎，第一叶含量高于下叶。
The characteristics of reproductive system of the female P. vicina adults in different developmental stages (before nuptial flight, strong spawning period and aging period) were observed through anatomy and their ovarian development index and gland development index were compared.
方法］通过解剖，观察拟黑多刺蚁雌性成虫不同的发育时期（婚飞前、产卵旺盛期和老龄期）的生殖系统的特点，比较其卵巢发育指数和雌性附腺发育指数。
Twenty-four primiparous Chinese Holstein cows that are in early lactation period, twenty-one local goats and sheep, respectively, nine Xiaowei sheep which were in prepuberty were selected to study relashionships between reproductive hormones and energy balance.
选择泌乳早期的第一胎中国荷斯坦奶牛24头、本地山羊、本地绵羊各21只、小尾寒羊9只进行60-65天正式试验，以研究反刍动物生殖激素与日粮能量关系。
During the study period, a total of 1080 specimens (556 females, 524 males) were anatomized. The population sex ratio, average catch rate, average Litter size, average reproductive index and average rate of scrotal testis were 1.06, 20.63%, 5.92, 0.67 and 72.05%, respectively. Seasonal changes of male rate of scrotal testis and female pregnancy rate were synchronous in trend.
研究期间共解剖标本1080只，雌鼠556只，雄鼠524只，种群性比为1.06，10年平均怀孕率为20.63%，平均胎仔数为5.92只，平均繁殖指数为0.67，平均睾丸下降率为72.05%，雄鼠睾丸下降率季节变化与雌鼠怀孕率季节变化呈同步变动趋势。
Genistein exposure during adolescent period could effect on female rats'reproductive development more than male rats'. The effect of rats'bodyweight and food consumption was mainly after their growing up. 3.
青春期暴露三羟异黄酮对雌性大鼠的生长发育影响大于雄性大鼠，而对大鼠体重和摄食量的影响主要在于其成年后。
The fattiness during reproductive period, coefficient of liver, coefficient of far, coefficient of mature gonad, and volume of the latter have certain biological significance.
繁殖期肥满度、肝脏系数、脂肪系数、性腺成熟系数、性腺体积均具一定的生物学意义。
Analysis on influence factors of antenatal care in reproductive aged women of various period
不同时期育龄妇女产前保健及影响因素分析
The impacts of ragweed on soil animals in reproductive period exceeded that in vegetative period, that of A. artemisiifolia exceeded that of A. trifida, that in pure ragweed community exceeded that in the community with ragweed and other plants.
豚草对土壤动物的影响，生殖生长期大于营养生长期，普通豚草大于三裂叶豚草，豚草纯群落大于豚草与其它植物混生群落。
The concentrations of plasma reproductive hormone were determined during the broody period, in order to show the change regularity of the concentrations of plasma reproductive hormone and the (relationship) between broody and hormone.
对番鸭就巢期不同时间的血浆生殖激素水平进行测试，揭示了不同就巢时间血浆生殖激素浓度变化的规律，并对就巢与激素之间的相关性进行分析。
Energy Budget and Feed Intake of Golden Pheasant in Autumn Reproductive Period
红腹锦鸡秋季繁殖期能量收支及采食量研究
Under starvation, the rotifer's lifespan was slightly elongated, but mean lifespan (10.8~13.1 d) and reproductive period (6.3~8.3 d) had no difference among six treatments (P > 0.05).
轮虫在受到饥饿后，寿命略有增长，但不同处理对轮虫的平均寿命（10.8~13.1d）和生殖期（6.3~8.3d）均未达到显著差异（P>0.05）。
However, the increasing rate of the culm biomass in reproductive period was1.13 times of that in vegetative period.
而生殖生长期茎秆生物量增长速率是营养生长期的1.13倍。