搜索结果: 196-210 共查到“知识库 家畜育种学”相关记录934条 . 查询时间(6.493 秒)
Effects of Levels of L-Leucine Supplementation with Sub-optimal Protein in the Diet of Grower-finisher Broiler Chickens on Carcass Composition and Sensory Characteristics
L-leucine Crude Protein Broiler Carcass Composition Sensory Characteristics
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2016/5/6
An experiment involving 180 straight run one-day-Cobb broilers was conducted to evaluate the effect of supplementation of L-leucine with different levels of crude protein (CP) on carcass composition a...
Effects of Different Additives on Fermentation Characteristics and Protein Degradation of Green Tea Grounds Silage
Wet Green Tea Grounds Additives Microbial Population Protein Degradation
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2016/5/6
This study evaluated the fermentation characteristics and protein degradation dynamics of wet green tea grounds (WGTG) silage. The WGTG was ensiled with distilled water (control), or lactic acid bacte...
Age Prediction in the Chickens Using Telomere Quantity by Quantitative Fluorescence In situ Hybridization Technique
Chickens Telomere Aging Age Prediction Fluorescence In situ Hybridization
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2016/5/6
Telomeres are special structures at the ends of eukaryotic chromosomes. Vertebrate telomeres consist of tandem repeats of conserved TTAGGG sequence and associated proteins. Birds are interesting model...
Predicting the Accuracy of Breeding Values Using High Density Genome Scans
Simulation-based Inference Prediction Accuracy Breeding Value High Density Genome Scan Single Nucleotide Polymorphism
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2016/5/6
In this paper, simulation was used to determine accuracies of genomic breeding values for polygenic traits associated with many thousands of markers obtained from high density genome scans. The statis...
利用DNA测序技术对牛HSF1和HSBP1进行SNPs位点扫描,共发现4个新SNPs,包括HSF1 1451(G/T)位点、HSBP1第二内含子324(G/C)、589(C/T)和651(C/G) 位点。利用CRS-PCR和PCR-RFLP技术对867头荷斯坦牛、85头鲁西黄牛和28头渤海黑牛进行基因多态性分析。χ2检验表明,HSF1 1451(G/T)位点和HSBP1 589(C/T)位点在荷斯...
牛双肌基因遗传机制及研究进展
双肌性状 双肌基因 肌肉生长抑制素
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2011/9/5
牛双肌基因位于第二条染色体上，是由肌肉生长抑制素基因（myostatin）突变造成的，它是骨骼肌生长发育的负调节因子，属于TGF-β超家族成员，为不完全显性遗传。本文综述了双肌牛的遗传特征、基因定位及双肌牛的生理、繁殖、胴体特征，并对双肌牛在牛肉生产中的利用方式及在我国肉牛生产中的应用前景进行了探讨。
羊驼垂体催乳素（PRL）基因全长cDNA的克隆及序列分析
羊驼 催乳素基因 全长cDNA 序列分析
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2011/9/5
获得并分析羊驼PRL基因cDNA全序列结构，为研究羊驼催乳素（PRL）的各种生物学作用和生产应用提供理论依据。[方法]根据已知的不同哺乳动物的PRL基因cDNA序列，设计羊驼PRL引物，运用RT-PCR方法和cDNA末端快速扩增（RACE）技术获得羊驼PRL基因cDNA全序列。[结果与结论]羊驼PRL基因cDNA序列全长959bp，编码区为687bp，编码229个氨基酸的PRL前体蛋白。预测羊驼P...
微生物菌剂处理猪场沼液效果研究
微生物菌剂 猪场沼液 处理效果
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2011/9/5
利用人工模拟活性污泥的方法，比较研究不同微生物菌剂对猪场沼液的净化效果，旨在研制适合处理猪场沼液的复合菌剂，为养殖废水无害化处理和资源化利用提供科学依据。试验结果表明：3种微生物菌剂对猪场沼液均具有一定的净化效果，能够较好地去除沼液生物需氧量、总磷、粪大肠菌群，最高去除率分别达到61.5%、83.0%、99.0%，发芽试验也证实植物毒性的良好去除效果，最高发芽率提高38.3个百分点，发芽指数提高4...
小鼠同源异型盒基因hex 的克隆与序列分析
昆明鼠 hex 基因 克隆 序列分析
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2011/4/1
同源异型盒基因hex 在动物个体发育过程中具有重要的作用。为了解小鼠hex 基因在乳腺发育
中的作用，研究中提取细胞总RNA，采用RT-PCR 方法扩增hex 基因，并克隆到pMD18-T 载体后测序。
结较保守，表明在进化中具有重要的作用。结果表明：小鼠的hex 基因开放阅读框由816 个核苷酸组成，
编码271 个氨基酸，相对分子质量为30 kD。与已发表的小鼠该基因序列完全一致。与禽类...
高温胁迫对6个高羊茅株系生理指标的影响
高羊茅 耐热性 高温胁迫 生理生化指标
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2013/7/7
在人工气候箱中，对高羊茅品种‘佛浪’（Festuca arundinacea cv. Fine Lawn）原始株系及其辐射诱变后代中筛选的5个优良株系进行高温胁迫，然后通过研究各株系的生理生化指标变化特征，一方面比较6个株系的耐热性，另一方面试图为高温高湿地区鉴定和选育耐热的冷地型草坪草提供一定的理论基础。结果表明，随着高温胁迫时间的延长，各株系的伤害率、丙二醛和脯氨酸含量变化均呈升高趋势；叶绿素...
Modeling the growth of rabbits raised in humid climate for improved breeding
Growth in rabbits for improved breeding
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2011/1/13
544 weekly body weight records of strains of New Zealand white rabbits were analyzed to model the growth of rabbits for improved breeding. The weekly body weights were collected from 2 to 22 weeks of ...
Genetic characterization of the indigenous Landim and Pafuri goat breeds from Mozambique
Landim Pafuri genetic structure Mozambique goat
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2011/1/13
This paper describes genetic diversity between and within the indigenous Landim and Pafuri goat breeds from Mozambique, with reference to the unimproved South African Boer goat, the paternal ancestor ...
免疫应激对不同品种猪氨基酸消化率的影响
品种 免疫应激 氨基酸消化率
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2011/4/1
通过注射大肠杆菌脂多糖（LPS）构建免疫应激模型，旨在探讨免疫应激对不同品种猪氨基酸消
化率的影响。分别选用6 头体重为32±3.6 kg 莱芜猪、鲁莱猪和大约克夏猪，采用2×3 因子设计（免疫应
激*品种类型），实施回肠末端T型瘘管手术。试验猪单栏饲养，术后经过14 天适应期，进行氨基酸代谢
试验。结果表明：在所测定的16 种氨基酸中，除了半胱氨酸和组氨酸，免疫应激降低了不同品种猪的氨
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In vitro micro-propagation of indigenous chick pea (Cicer arietinum L.) cultivars, KK-1 and Hassan-2K
Micro propagation chick pea shooting culture multiple shooting
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2011/1/13
Multiple shoot induction and plantlets regeneration ability from nodal explants of two indigenous cultivars of Cicer arietinum was investigated on MS+B5 medium supplemented with different concentratio...
Participatory technology development for improving animal-technical service system in Gongshan County, Northwest Yunnan Province, China
Animal extension service participatory technology development
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2011/1/12
The purpose of this article is to examine and analyze the animal-technical service system and participatory technology development (PTD) approach adoption in Gongshan County, northwest Yunnan Province...