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Feed conversion ratio,residual feed intake and cholecystokinin type A receptor gene polymorphisms are associated with feed intake and average daily gain in a Chinese local chicken population

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Journal of Animal Science and Biotechnology 2018年第4期9卷 794-802页

作者： Zhenhua Yi Xing Li Wen Luo Zhenqiang Xu Congliang Ji Yan Zhang Qinghua Nie Dexiang Zhang Xiquan Zhang Department of Animal Genetics Breeding and ReproductionCollege of Animal ScienceSouth China Agricultural UniversityGuangzhou 510642GuangdongChina Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Laboratory of Chicken Genetics Breeding and ReproductionMinistry of AgricultureGuangzhou 510642GuangdongChina Wen’s Nanfang Poultry Breeding Co.Ltd Yunfu 527400GuangdongChina

Background: The feed conversion ratio(fcr) and residual feed intake(RFI) are common indexes in measuring feed efficiency for livestock. RFI is a feed intake adjusted for requirements for maintenance and production so these two traits are related. Similarly, fcr is related to feed intake and weight gain because it is their ratio. Cholecystokinin type A receptor(CCKAR) plays an important role in animal digestive process. We examined the interplay of these three parameters in a local Chinese chicken population.Results: The feed intake(FI) and body weights(BW) of 1,841 individuals were monitored on a daily basis from 56 to 105 d of age. There was a strong correlation between RFI and average daily feed intake(ADFI) and a negative correlation between the fcr and daily gain(r_g=-0.710). Furthermore, we identified 51 single nucleotide polymorphisms(SNPs) in the CCKAR and 4 of these resulted in amino acid mutations. The C334A mutation was specifically associated with FI and the expected feed intake(EFI)(P fcr is apply to weight selecting, and RFI is more appropriate if the breeding focus is feed intake. And C334A and G1290A of the CCKAR gene can be deemed as candidate markers for feed intake and weight gain.

关键词： CCKAR Chicken fcr RFI SNP

Biological and Economic Efficiency of Partial Dietary Substitution of Soybean (Glycine max) Meal with Cowpea (Vigna unguiculata) Meal in Broiler Production

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Journal of Agricultural Chemistry and Environment 2023年第3期12卷 296-305页

作者： Edmore Bumhira Denice Chikwanda Soul Washaya Godfrey Nyamushamba Department of Animal Production and Technology Chinhoyi University of Technology Chinhoyi Zimbabwe Department of Animal Science Women’s University in Africa Harare Zimbabwe

This manuscript explores the biological and economic efficiency of partial dietary substitution of soybean (Glycine max) meal with cowpea (Vigna unguiculata) meal in broiler production. As a result of the shortage of soybean in Zimbabwe due to droughts, inadequate irrigation infrastructure, high input costs, and price controls, the authors identified an alternative to soybean meal in cowpea meal due to its availability and similar amino acid profile to soybean meal. The experiment was carried out at Cold Storage Company in Kadoma. A total of 150 unsexed day-old broiler chicks (Cobb 500) were used. All the birds were brooded in one pen during the first two weeks of age and fed with standard broiler starter mash from National Foods PVT LTD for adaptation. The birds were randomly allocated into five equal groups, each with three replicates and 10 birds per replicate at three weeks of age. Five experimental diets: T1 (100% soybean meal + 0% cowpeas meal), T2 (75% soybean meal + 25% cowpeas meal), T3 (50% soybean meal + 50% cowpeas meal), T4 (25% soybean meal + 75% cowpeas meal) and T5 (0% soybean meal + 100% cowpeas meal) were formulated to be iso-caloric and iso-nitrogenous to meet nutrient requirements of broilers according to NRC (2001). Ration formulation using maize, soybean and cowpea meal as ingredients for broiler starter (21% Crude Protein) and broiler finisher (19% Crude Protein) was done using the Pearson Square Method. Feed intake (g) and weight gain (g) were recorded weekly. Feed Conversion Ratio (fcr) and bioeconomic efficiency were calculated weekly. The experiment lasted for five weeks. The results showed that total Dry Matter Intake for Treatment 1 was the highest (3285 g), and Dry Matter Intakes for Treatments 2, 3 and 4 (3284 g, 3284 g and 3284 g) were not significantly different (P > 0.05) and Dry Matter Intake for Treatment 5 was the lowest (3282 g). Weight gains for Treatments 1 and 2 (2089 g and 2089 g) were not different (P > 0.05), Treatments 3 and 4 (2098 g and 2103 g) were not different (P

关键词： Anti-Nutritional Factors fcr Feed Intake Growth Performance

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强制搅拌方法制备A356铝合金半固态浆料

特种铸造及有色合金 2013年第10期33卷 931-934页

作者：郜俊震康永林周冰李扬德李卫荣北京科技大学材料科学与工程学院广东东莞宜安科技股份有限公司

介绍了自主研发的强制搅拌流变成形设备(fcr),其核心部件是剪切搅拌机构和电气温度控制系统。研究了不同浇注温度对A356铝合金半固态组织的影响规律。结果表明,该试验设备在转速为200r/min,搅拌时间为30s,浇注温度为620℃时,可制备出晶... 详细信息

介绍了自主研发的强制搅拌流变成形设备(fcr),其核心部件是剪切搅拌机构和电气温度控制系统。研究了不同浇注温度对A356铝合金半固态组织的影响规律。结果表明,该试验设备在转速为200r/min,搅拌时间为30s,浇注温度为620℃时,可制备出晶粒细小(80μm)、形貌圆整(圆整度为0.75)且分布均匀的半固态组织。随着浇注温度的降低,合金初生相明显细化,形貌更加圆整,组织更加均匀。

关键词： fcr 半固态 A356铝合金显微组织

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纺织品贸易fcr单据交易的风险与防范问题

对外经贸实务 2015年第3期 64-66页

作者：沈飞浙江越秀外国语学院

随着近年纺织品外贸单据操作方式的逐步发展,交易中承运人凭非提单放货的操作得以宽松,其中的fcr单据交易凭其海运费均价仅为欧基港1/3的价格优势及手续简便、便于收货分柜等特点,逐渐被应用于纺织品外贸交易。而随着fcr交易逐渐增多,... 详细信息

随着近年纺织品外贸单据操作方式的逐步发展,交易中承运人凭非提单放货的操作得以宽松,其中的fcr单据交易凭其海运费均价仅为欧基港1/3的价格优势及手续简便、便于收货分柜等特点,逐渐被应用于纺织品外贸交易。而随着fcr交易逐渐增多,其风险及对纺织品交易的潜在损害也逐一显现。

关键词： fcr 防范问题议付收货海运提单国际贸易仲裁指示性抬头贸易合同交单象征性交货

免疫球蛋白G的Fc段受体ⅡB在自身免疫病中的研究进展

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中华风湿病学杂志 2016年第2期20卷 135-137页

作者：朱准聂英坤哈尔滨医科大学附属第二医院风湿科 150086

在人类和小鼠中，免疫球蛋白（Ig）G的Fc段受体ⅡB（FcγRⅡB）广泛表达于髓系的大部分细胞，是IgG恒定部分中较低亲和力的fcr，并且它是唯一起抑制作用的FcγR。

关键词：免疫球蛋白G 受体Ⅱ Fc段自身免疫病 FcγR 低亲和力抑制作用 fcr

Phagocytosis of IgA Immune Complexes by Human U937 Cells

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Journal of Microbiology and Immunology 2003年第1期1卷 69-73页

作者：郭彩云崔薇张伟 Institute of Basic Medical Sciences Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100005 China Peking Union Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100005 China

In order to study FcαRⅠ mediated phagocytosis of IgA immune complexes by U937 cells, antigen 8.9NIP/BSA was labeled with FITC and reacted with anti-NIP IgA or anti-NIP IgG antibody to form immune complexes (ICs). They were then incubated with phorbol 12-myristate 13-acetate (PMA) stimulated U937 cells.The phagocytosed ICs were quantified by flow cytometry. The results was that the expression of FcαRⅠ on U937 cells was higher than that of FcγRⅠ, FcγRⅡ and FcγRⅢ. After stimulation by PMA, expression of FcαRⅠ on U937 cells was markedly upregulated and the phagocytosis of IgA ICs was enhanced. FcαRⅠ mediated specific IgA phagocytosis was stronger than FcγRⅠ and FcγRⅡ mediated IgG phagocytosis. Complement receptors, CR1 and CR3, enhanced U937 cell phagocytosis of IgA ICs. It concludes that FcαRⅠ mediated strong phagocytosis of IgA ICs.

关键词：人类 U937细胞吞噬作用 IgA 免疫复合物 fcr 免疫学

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利多卡因抑制芬太尼咳嗽反射

基础医学与临床 2007年第7期27卷 824-825页

作者：张志永黄宇光卢素芳周游薛杨任洪智罗爱伦中国医学科学院中国协和医科大学北京协和医院麻醉科北京100730

芬太尼是临床麻醉中使用最多的镇痛药物之一。麻醉诱导前静脉注射芬太尼，有时可以诱发咳嗽反射（fentanyl-cough reflex，fcr；or fentanyl-induced cough，FIC）。随给药剂量、途径和速度的不同，fcr的发生率从2．7％～65％不等。fcr... 详细信息

芬太尼是临床麻醉中使用最多的镇痛药物之一。麻醉诱导前静脉注射芬太尼，有时可以诱发咳嗽反射（fentanyl-cough reflex，fcr；or fentanyl-induced cough，FIC）。随给药剂量、途径和速度的不同，fcr的发生率从2．7％～65％不等。fcr是临床中的常见现象，可引起颅内压、眼内压和腹腔内压力升高等不良反应。

关键词：咳嗽反射芬太尼利多卡因临床麻醉 cough 腹腔内压力 fcr 镇痛药物

重庆地区汉族人群fcrL3基因rs945635多态性与Graves病的关联

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上海医学 2009年第10期32卷 914-916页

作者：郑瑞芝赵志刚张素华李蓉河南省人民医院老年临床医学部内分泌科郑州450003 重庆医科大学附属第一医院内分泌科

Graves病(GD)是一种常见的自身免疫性疾病,其发病机制包括遗传易感和环境诱发两大因素.GD的发病具有明显的家族聚集性,双生子流行病学研究显示,同卵双生子的发病一致率远高于异卵双生子,说明遗传因素在GD的发病中起到很重要的作用[1].Fc... 详细信息

Graves病(GD)是一种常见的自身免疫性疾病,其发病机制包括遗传易感和环境诱发两大因素.GD的发病具有明显的家族聚集性,双生子流行病学研究显示,同卵双生子的发病一致率远高于异卵双生子,说明遗传因素在GD的发病中起到很重要的作用[1].fcrL3的结构与经典的FcγRs有较高的同源性,这些受体均是参与免疫反应较强的候选基因,在自身免疫性疾病的发病机制中起重要作用.

关键词： Graves病基因多态性 L3基因汉族人群重庆地区自身免疫性疾病 fcr 发病机制

Effects of two types of vitamin B6 on growth Performance,Body Composition and Serum Biochemical Indices of Litopenaeus vannamei

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Effects of two types of vitamin B6 on growth Performance,Bod...