Comparative Study on Carcass Traits and Meat Quality of Different Month Old of Xinjiang Brown Cattle Steers     

YAN Xiang-min  ZHANG Jin-shan  LI Hong-bo  LI Na  DU Wei  ZHOU Zhen-yong  ZHANG Yang 《中国畜牧兽医》2015,42(11):2954-2960

In this research,12 heads of 28 to 30 months (low months age group) and 8 heads of 32 to 34 months (high months age group) Xinjiang Brown cattle steers which fed in the same mode of nutrition were chose for the slaughter test,in which the carcass traits,nutrient composition and some edible quality index were measured and comparative analyzed,a research which through comparative analysis the carcass traits and meat quality of nutritional components of different months of Xinjiang Brown cattle steers was carried out.The results indicated that the marbling,carcass grade,fat,meat color of high months age group were better than that of low months age group,the traits of the low months age group on fat color,moisture,protein,cooking loss and shear force value were better than that of high months age group,and there were significant difference on the traits of fat and meat color L^* between the two groups (P<0.05),while the differences of other traits between them were not significant (P>0.05);As high-grade beef,in addition to the traits of meat color and pH value of the chunk roll,tenderloin and striploin,each site of the meat traits on the fat,protein,moisture,cooking loss,shear force value indicators were all better than other parts,and showed the best of nutritional value and edible quality.28 to 34 months of Xinjiang Brown cattle steers could produce high-grade beef,the meat could be used as the raw materials of steak and boiled beef.  相似文献   

早熟薄皮甜瓜新品种香瑞1号的选育   总被引：1，自引：1，他引：0  

赵艳霞 《中国瓜菜》2011,24(3):29-31

香瑞1号是黑龙江省青冈县瑞雪农业有限责任公司以NY-99为父本、RX-99为母本选育的早熟薄皮甜瓜新品种.全生育期68d,果实发育期27 d.子、孙蔓均可结瓜.果实长圆形,果皮黄白色,果实大小整齐,外形美观,不裂果;中心可溶性固形物14%,品质优.单果质量500～600g,667m2产量3 500 kg左右.田间表现对...  相似文献   

Some Agronomic Strategies for Organic Quinoa (Chenopodium quinoa Willd.)          下载免费PDF全文

S.‐E. Jacobsen  J. L. Christiansen 《Journal of Agronomy and Crop Science》2016,202(6):454-463

Quinoa is a potential new seed crop for protein feed and human consumption in Europe, with tolerance to a range of abiotic stresses. For this purpose the study was planned to analyse the effect of important agronomic strategies like nitrogen level, N application strategy, row spacing and harvest time on yield and quality of quinoa. The experiments took place in the field of the experimental station of the Faculty of Science, University of Copenhagen. Three levels of organic nitrogen from slurry was used (60, 120 and 180 kg N ha^?1), supplied either all at once at sowing, or split between sowing and beginning of the reproductive phase. The effect of row spacing and harvest time was studied by harvesting seeds at seed maturity, which occurred 2–3 weeks prior to the mechanical harvest by threshing, and a couple of months after. Yield increased significantly (P ≤ 0.05) with an application up to 180 kg N ha^?1, reaching 2200 kg ha^?1. Increasing N also caused a significantly increased seed weight (up to 3.3 mg) and protein content (up to 17 %). N level did not affect number and amount of weeds. Split application with part of the N applied at bud formation did not have a significant effect on yield. Delayed harvest had a negative influence on seed weight, whereas protein content was stable after harvesting even a month after seed maturity. A late harvest significantly reduced seed germination, being reduced by 50 % after a 2‐month delay. A conclusion from this study is that both yield and protein content of seed can be manipulated by N level and application strategy. Harvest time is important for securing a high seed quality measured as seed germination, seed weight and protein content. A fast germination of quinoa is an important characteristic demonstrating that the crop has good possibilities for being well‐established in the field when free from weeds at the time of sowing. The choice of row spacing is important and depends on weed control method. Weed control strategy should be developed based on modern precision tools.  相似文献   

光质对番茄营养与风味品质的影响     

杨忠武  刘翼  金卓君  徐卫红 《中国农学通报》2020,36(34):134-141

以番茄为试验材料,在田间大棚设施条件下,选用白、蓝、黑、红、绿5种不同颜色的遮阳网,探讨不同光质对番茄营养与风味品质的影响。结果表明,在青熟期,黑色光质促进了总氮、蛋白氮以及非蛋白氮的积累。青熟期到转色期,白色光质的番茄有机酸总量较青熟期增加了4.57倍,蓝色和绿色光质提高了番茄的总糖和还原糖含量。从转色期到成熟期,番茄氨基酸含量大小表现为蓝色>绿色>黑色>红色>白色;黑色光质的番茄有机酸总量较转色期增加了27.8%;红色光质提高了番茄红素含量和Vc含量,降低了硝酸盐含量;白色、红色和绿色光质增加了番茄的总糖和还原糖含量。番茄主要风味物质(>30 μg/kg)为水杨酸甲酯、6-甲基-庚烯-2-酮、柠檬烯、反-2-己烯醛。红光使番茄水杨酸甲酯、6-甲基-庚烯-2-酮和己烯醛含量较白光增加了11.6%、20.2%和17.2%。在大田设施条件下,转色期到成熟期可以采用红色光质提高番茄果实营养品质和风味。  相似文献   

企业会计信息质量控制策略研究     

张鸽 《湖南农机》2016,(1)

对于企业来说,会计工作重要且繁杂.面对纷繁复杂的会计工作,会计人员除了要准确的应对各种会计事务,还应该明确企业会计信息质量的重要性.因企业会计信息控制及质量管控不单单是安全方面的因素,也是企业的发展核心及未来竞争中获胜的重要砝码.  相似文献   

北京地区文献采购中招投标机制探究   总被引：1，自引：0，他引：1  

缪小燕  邢燕丽  熊丽  何钧 《农业图书情报学刊》2011,23(3):98-100

招投标作为一种公开、公平、公正和竞争择优的市场交易方式,在当今社会经济活动中扮演着越来越重要的角色。论述了招投标机制的形成,图书馆文献采购中的招投标;研究分析了影响文献采购招投标工作的因素及对策;介绍了北京市评标专家库的建立。  相似文献   

文山州出口烟叶质量特点及可用性综述     

余东灿  向成高  钱周龙  何健勇  王刚  陈明顺  李润涛  周长华  何祥辉  叶健  夏景元 《现代农业科技》2015,(3):309-310

阐述了英美烟草公司(BAT)与云南省文山州烟草合作历程,从烟叶物理质量特征、化学成分、感官评吸质量、安全性等方面介绍了文山州出口烟叶的质量特点及其等级与可用性,以供参考。  相似文献   

布氏乳杆菌和甲酸对青藏高原不同物候期燕麦青贮饲料发酵品质和细菌群落的影响     

陆永祥  赵嫚  陈良寅  成启明  游明鸿  李达旭  陈仕勇  白史且  李平 《草地学报》2020,28(6):1736-1743

为探讨布氏乳杆菌和甲酸对青藏高原不同物候期燕麦（Avena sativa L.）青贮饲料发酵品质和细菌群落的影响，本试验以开花期、乳熟期和蜡熟期燕麦为原料，设置对照、添加甲酸和添加布氏乳杆菌3个处理，青贮90 d后，测定其营养成分、发酵指标和细菌群落组成。结果表明：布氏乳杆菌和甲酸处理均改变不同物候期燕麦青贮饲料中细菌群落组成（P<0.05），并提高其乳酸细菌相对丰富度；与对照相比，用布氏乳杆菌和甲酸处理不同物候期的燕麦青贮后，蜡熟期的燕麦pH值降低（P<0.05），乙酸均增加9.7%，丙酸分别降低11.6%和8.6%，氨态氮分别降低11.3%和19.2%。综合细菌群落组成、发酵品质和营养成分来看，蜡熟期的燕麦添加布氏乳杆菌和甲酸后，其青贮品质较佳。  相似文献   

乌鲁木齐市空气污染成因及防治对策探讨     

廖银念  苏玉红  艾尼瓦尔·买买提 《湖北农业科学》2011,(21):4378-4380

分析了乌鲁木齐市1999～2009年间每年以及2005～2007年各月份空气环境质量中主要污染物SO2、NO2、PM10的监测结果 ;探讨了造成该市空气污染的自然条件、城市功能布局、能源结构、供热点分布、移动源、监测和治理能力等因素,并从改善生态环境、优化工业布局、加强污染治理、调整能源结构、推进节能工作、防治机动车尾气排放、提高监测能力及公众意识等方面提出了污染防治的对策和建议。  相似文献   

电子技术实践教学中创新能力的培养     

张伟  付广春 《湖南农机》2011,(5):185-186

培养学生的创新能力是一个复杂的系统工程,它需要各学科密切协调,需要教师全员参与。本文阐述了在电子技术实践教学中,通过改革基础实验教学和课程设计,开放实验室等教学途径,有效的提高学生的实践能力,培养学生的创新意识和创新能力。  相似文献