搜索结果: 76-90 共查到“知识库 动物生物化学”相关记录682条 . 查询时间(4.656 秒)
断乳前棕色田鼠幼仔对双亲和可卡因的条件位置偏爱
棕色田鼠 社会性奖赏 可卡因 条件位置偏爱
2016/7/18
个体间的社会互作是一种天然奖赏，这种社会性奖赏诱导的条件位置偏爱（Conditioned place preference, CPP）是通过环境信息和社会互作奖赏效应间建立条件反射形成的，与药物奖赏诱导的CPP相似。棕色田鼠 (Microtus mandarinus) 是一种社会性单配制田鼠，具有紧密的亲-子联系和社会互作；雄鼠对断乳前幼仔也提供较高水平的亲本抚育。幼仔强化能够诱导母鼠及父鼠形成C...
Field surveys utilizing indirect indicators are often adopted in population ecology studies of wild cats in China．However,research using molecular biology techniques are still relatively rare． Confirm...
为了探讨圈养大熊猫主食竹食谱组成及主要影响因素，并为圈养单位提供科学合理的食物营养配比和饲养管理建议。本研究通过对成都大熊猫繁育研究基地１０ 只成年大熊猫４ 年（２００９. ０３ －２０１３.０２）的饲养数据，３只成年大熊猫１ 年（２０１２. ０７ －２０１３. ０６）的觅食行为观察数据，以及投饲的３ 种竹笋和５ 种主食竹常规养分和总黄酮含量的统计分析。结果发现，基地圈养大熊猫偏好竹笋，喜食巴山木...
应用微卫星分型进行小熊猫亲子鉴定
小熊猫 谱系 微卫星 亲子鉴定
2016/7/18
小熊猫栖息于喜马拉雅与横断山脉，是亚洲濒危物种。中国的小熊猫谱系已登记圈养小熊猫个体９６８ 只，现有存活个体３５５ 只（２０１３ 年），然而，现有谱系中存在部分信息不明确的问题。为此，我们选择１９ 对小熊猫特异性引物对４１ 只圈养小熊猫进行微卫星扩增，并分析其亲缘关系。将获取的亲子鉴定结果，结合种群原始记录信息，利用Pedigraph 软件构建福州圈养小熊猫的种群遗传谱系图。结果表明：在母子关系确...
非优势顺位雄性黄山短尾猴的交配策略
短尾猴 雄性 非优势顺位 交配策略
2016/7/18
在多雄多雌、顺位决定交配机会、雄性偏斜繁殖的非人灵长类社会中，低顺位雄性为提高自己的繁殖成功率，通常采取多样的交配策略以获得较多的交配机会。对非优势顺位雄性交配策略的研究可以增加对灵长类社会性行为复杂性的理解，对于深入探讨动物的婚配制度及繁殖策略具有十分重要的科学意义。本研究采用目标动物取样法和全事件记录法，在２０１２ 年９ －１２ 月（交配期）记录了安徽黄山短尾猴鱼鳞坑ＹＡ１ 群中４ 只成年雄性...
西双版纳亚洲象的栖息地评价
亚洲象 西双版纳 生态位因子分析 栖息地评价
2016/7/18
本文利用亚洲象种群野外调查数据，结合3S技术，应用生态位因子分析（Ecological Niche Factor Analysis，ENFA）模型对西双版纳亚洲象的栖息地状况进行评价，并对适宜栖息地做出预测。结果表明：ENFA分析的边界值M=1.375＞1，耐受值T=0.478，说明亚洲象对环境条件有一定选择性和耐受性，但生态位仍不宽，专化程度较高；影响亚洲象栖息地质量的最重要因素为植被因素，尤其...
Effect of Encapsulating Nitrate in Sesame Gum on In vitro Rumen Fermentation Parameters
Encapsulated Nitrate Sesame Gum Methane Rumen In vitro Fermentation
2016/5/17
Encapsulation is a method used to protect material from certain undesirable environments, for controlled release at a more favorable time and place. Animal productivity would be enhanced if feed addit...
Evaluation of the Efficacy of Fermented By-product of Mushroom, Pleurotus ostreatus, as a Fish Meal Replacer in Juvenile Amur Catfish, Silurus asotus: Effects on Growth, Serological Characteristics and Immune Responses
Fermented Mushroom Fish Meal Replacer Juvenile Amur Catfish Growth Immune Response
2016/5/17
The present experiment was conducted to evaluate the efficacy of dietary fermented by-product of mushroom, Pleurotus ostreatus, (FBPM) as a fish meal (FM) replacer in juvenile Amur catfish, Silurus as...
Meta-analysis on Methane Mitigating Properties of Saponin-rich Sources in the Rumen: Influence of Addition Levels and Plant Sources
Saponin Methane Rumen Emission Fermentation
2016/5/17
Saponins have been considered as promising natural substances for mitigating methane emissions from ruminants. However, studies reported that addition of saponin-rich sources often arrived at contrast...
Determination of Sperm Sex Ratio in Bovine Semen Using Multiplex Real-time Polymerase Chain Reaction
Sex Determination Sexed Semen Multiplex Real-time polymerase chain reaction
2016/5/17
Gender selection is important in livestock industries; for example, female calves are required in the dairy industry. Sex-sorted semen is commonly used for the production of calves of the desired gend...
Changes in Hematological, Biochemical and Non-specific Immune Parameters of Olive Flounder, Paralichthys olivaceus, Following Starvation
Biochemical Response Lysozyme Activity Food Deprivation
2016/5/17
Triplicate groups of fed and starved olive flounder, Paralichthys olivaceus (body weight: 119.8±17.46 g), were examined over 42 days for physiological changes using hematological, biochemical, and non...
Effects of Bacillus subtilis KN-42 on Growth Performance, Diarrhea and Faecal Bacterial Flora of Weaned Piglets
Bacterial Community Diarrhea Growth Performance Lactobacillus Weaned Piglets
2016/5/17
This research focused on the effects of different doses of Bacillus subtilis KN-42 on the growth performance, diarrhea incidence, faecal bacterial flora, and the relative number of Lactobacillus and E...
Ileal Endogenous Amino Acid Flow Response to Nitrogen-free Diets with Differing Ratios of Corn Starch to Dextrose in Pigs
Ileal Digestibility Basal Endogenous Amino Acid Loss Swine
2016/5/17
The objective of this study was to determine the responses in the digestibility of dry matter (DM) and amino acid (AA) composition of ileal endogenous flow (IEF) of pigs (initial body weight, 69.1±6.4...
Protective Efficacy of Alpha-lipoic Acid against AflatoxinB1-induced Oxidative Damage in the Liver
AflatoxinB Alpha-lipoic Acid Liver Oxidative Damage Antioxidant
2016/5/16
Alpha-lipoic acid (α-LA) is not only involved in energy metabolism, but is also a powerful antioxidant that can protect against hepatic oxidative stress induced by some drugs, toxins, or under various...
L-carnitine Supplemented Extender Improves Cryopreserved-thawed Cat Epididymal Sperm Motility
L-carnitine Epididymal Spermatozoa Cryopreservation Cat
2016/5/16
Cryopreservation of epididymal sperm is an effective technique to preserve genetic materials of domestic cats and wild felids when they unexpectedly die. However, this technique inevitably causes detr...