共查询到20条相似文献，搜索用时 812 毫秒
1.
2.
由于蜂胶具有抗菌、消炎、止痛、止痒、防腐、除臭、排除毒素、促进再生、增强SOD活性等多种作用,在化工产品中加入适量的蜂胶有利于增强它们保护皮肤、清除体表污垢、预防外在感染以及其他医疗保健功效,因而在化工行业深受欢迎。据联合国粮农组织(FAO)有关文献报道,国外蜂胶化工产品的研制和生产已有一定的历史,而且已显示出良好的发展前景。产品包括蜂胶的各种提取液,促进组织再生的药膏,含蜂胶的香波、药皂、冷膏、发膏、护肤露、面霜、面膜、牙膏、沐浴露、漱口水、脱发剂等。我国的蜂胶化工产品仍处于起步阶段。在“返璞归真”、“… 相似文献
3.
4.
5.
为了解新疆伊犁地区肉牛产业链中重金素元素的残留情况,本研究采用原子吸收法对新疆伊犁地区肉牛养殖场的土壤、饲料及屠宰场的牛肉进行重金属砷、铅、汞、铬、镉的检测。结果表明土壤样品中重金属铅、砷、汞、铬、镉元素含量分别为0.03~0.20、3.87~8.30、0.15~0.23、0.09~0.48和0.41~0.86 mg/kg。饲料样品中铅、砷、汞、铬、镉元素含量分别为3.01~18.09、75.35~94.27、19.65~24.37、0.06~1.04和1.81~8.46 μg/kg。牛肉中铅、砷、汞、铬、镉元素含量分别为0.23~0.54、1.22~7.12、0.28~0.53、0.01~0.27及0.02~0.03 μg/kg。土壤和饲料、饲料和牛肉、土壤和牛肉中重金素含量的相关系数分别是0.96、0.99、0.98。综上所述,伊犁地区肉牛养殖场的土壤和饲料,屠宰场的牛肉中重金素铅、砷、汞、铬、镉元素的含量均没有超标,三者中重金属含量具有较高的相关性。 相似文献
6.
1.分群饲喂:羊的分群具体可分为普通羊群、杂交羊群、公羊群、母羊群、公羔群、母羔群、青年公羊群、青年母羊群、健康羊群、非健康羊群等等.在饲养过程中,按照不同的性别、年龄、生理时期的需要给予相应的饲料进行饲喂,可以大大提高饲料的利用率,迅速提高羊的增重速度和肉羊的屠宰率. 相似文献
7.
金辉蜂产品公司始创于1992年,经历13年的发展。公司从无到有、从小到大、从弱到强。我们始终坚持“改革创新、强化管理、质量过硬、诚实守信”的原则,以“一流的质量、一流的信誉、一流的服务”为宗旨,以“一真、二纯、三鲜”为目标,创造的金辉品牌已逐步赢得了社会各界的认可和广大消费者的青睐。公司生产蜂蜜、蜂王浆、蜂花粉、蜂胶、蜂具、蜂药、山野菜、木耳、蘑菇、人参和鹿产品10大系列200余种产品,集公司、协会、研究所、商店为一体,提供产品和蜂具加工、销售一条龙服务,共有生产车间4个,职工40余名。公司已实现产、供、销一条龙,科… 相似文献
8.
9.
饲料添加剂的种类在我们往期的杂志中做过详细的介绍,根据现行《饲料添加剂品种目录》的规定,主要包括氨基酸、维生素、矿物元素及其络(螯)合物、酶制剂、微生物、非蛋白氮、抗氧化剂、防腐剂、防霉剂、酸度调节剂、 相似文献
10.
在青藏高原独特的自然条件下，经过数千年的自然选择和人工选育．逐步形成了藏羊、牦牛、黄牛、大通马、河曲马、柴达木马、玉树马、驴、骆驼、互助猪、海东鸡等适应当地自然生态条件的地方畜禽品种。建国后．又引进了一批细毛羊、半细毛羊、乳用牛、肉牛、马、驴、猪、肉鸡、蛋鸡等优良品种．开展了畜禽品种改良工作。经几十年的艰苦努力．先后培育出青海毛肉兼用细毛羊、青海高原毛肉兼用半细毛羊、青海挽乘兼用马和柴达木绒山羊等新品种。 相似文献
11.
兽药、农药及生物毒素等小分子化学物质在食品、饲料或水体中的过量残留对人、动物的健康及生态环境的平衡造成一定程度的危害,因此建立一种针对上述小分子化学物质残留的快速检测方法十分必要。以抗原抗体特异性结合为基础的免疫分析技术是残留检测的常用手段,该技术的关键是制备可用来检测特异性抗原的抗体。随着对抗体结构的解析及重组DNA技术的发展,单链抗体为小分子化学物质的残留检测提供了新的技术手段。单链抗体具有分子质量小、免疫原性低、可塑性强、可批量生产等优点,具有广阔的发展空间。近年来,以单链抗体为基础建立的酶联免疫吸附法检测小分子化学物质的残留检测成为最常用的分析工具,且单链抗体的筛选策略、表达策略、突变策略及与碱性磷酸酶形成的融合蛋白等进一步提高了抗体产量、灵敏度、广谱性,并使免疫分析方法简便化,从而推进单链抗体免疫分析方法在小分子化学物质残留检测的应用。作者综述了以单链抗体为基础的免疫分析方法在兽药、农药及生物毒素等小分子化学物质方面的研究进展,以期为小分子化学物质残留检测提供参考。 相似文献
12.
13.
Following treatment of sheep with different sulfonamides, residues in kidney, liver, and muscle have been determined by microbiological and chemical methods. By the microbiological method residues could be detected in kidney until the third day after the combined treatment with sulfadimidine/sulfanilamide. Using the chemical method, residues of about 3.80 p.p.m. could be found that day in kidney, while the concentrations in liver and muscle were about 1.90 and 1.20 p.p.m., respectively. On the eighth day after the last treatment traces of the medicine could be found in kidney, liver and muscle by using the chemical method.Residues of sulfamethoxypyridazine could be detected micro-biologically in kidney the second day after the last administration of the drug. The concentration at that time in kidney, liver and muscle determined by chemical analyses was about 4.66, 2.45 and 1.23 p.p.m., respectively. Traces of sulfamethoxypyridazine in kidney, liver and muscle could also be detected on the eighth day after the last medication.Considering altered metabolic rates of sick animals and variations in excretion rates between individuals of the same species, as well as variation in size of the doses applied, a 10 day withdrawal period for sulfonamides is proposed. 相似文献
14.
SUMMARY A brief history of food safety in Australia in the context of the development of scientific knowledge is presented. Australia's food and food commodity residue and contamination surveillance and monitoring programs are outlined. Although chemical residues are perceived as a major health risk by the general community, the risk of food causing illness or death because of chemical residues is low. The major threat to human health from food is microbiological contamination, in terms of deaths, sickness and economic loss. The emerging influences in food safety are scientific and technical developments, deregulation, social and demographic factors, and the media. The risk of disruption of domestic and export markets by food safety issues is considerable. The emergence of international standards for food production and processing will enable commercial contractual arrangements to minimise the frequency of disruptive food safety incidents. 相似文献
15.
This research aimed to clone and analyze the biological characteristics of MARK2 and CREB5 genes in cattle.In the GenBank database,MARK2 and CREB5 genes of human were chosen to blast and expressed sequence tags (ESTs) of cattle were got.Specific primers were designed and RT-PCR was used to clone the cDNA sequence from the scapula muscle of cattle with vacancy parts making up,and then MARK2 and CREB5 genes were successfully cloned.The results showed that MARK2 gene coding region was 2 076 bp,which encoded 691 amino acids.CREB5 gene coding region was 1 527 bp,which encoded 508 amino acids.The physical and chemical properties of protein prediction showed that MARK2 and CREB5 proteins were hydrophilic protein;The phosphorylation sites in threonine (Thr),serine (Ser) and tyrosine (Tyr) residues;The secondary structure of MARK2 and CREB5 proteins were maily composed of random coil and layed a foundation for the tertiary structure;Protein subcellular localization prediction showed that MARK2 and CREB5 proteins did not belong to the secretory protein;MARK2 protein contained a S_TKc domain and an UBA function structure,CREB5 protein contained a ZnF_C2H2 function structure,a BRLZ function structure and five low complexity regions and MARK2 and CREB5 proteins had no transmembrane structure. 相似文献
16.
试验旨在对牛MARK2、CREB5基因进行克隆和生物信息学分析.首先在GenBank数据库中利用人MARK2和CREB5基因序列比对获得牛的表达序列标签(ESTs)的序列,进行引物设计并利用RT-PCR方法从牛肩胛骨肌肉中克隆出MARK2和CREB5基因的cDNA序列,补足空缺部分,最终获得牛MARK2和CREB5基因.通过对牛MARK2和CREB5基因的生物学特性进行分析可知:牛MARK2基因的编码区长为2 076 bp,编码691个氨基酸,CREB5基因的编码区长1 527 bp,编码508个氨基酸;经蛋白质理化性质预测MARK2和CREB5蛋白均为亲水性蛋白;MARK2和CREB5蛋白的磷酸化位点均分布于苏氨酸(Thr)、丝氨酸(Ser)和酪氨酸(Tyr)残基上;MARK2蛋白与CREB5蛋白的二级结构预测以无规则卷曲为主;亚细胞定位预测MARK2蛋白主要分布在细胞质中,CREB5蛋白主要分布在细胞核中,两者均不属于分泌型蛋白;MARK2蛋白保守结构域预测含1个S_TKc和1个UBA功能结构域,CREB5蛋白保守结构域预测含有1个ZnF_C2H2、1个BRLZ功能结构域和5个低复杂度区域且二者均不具有跨膜结构. 相似文献
17.
18.
USDA regulation of residues in meat and poultry products 总被引：1，自引：0，他引：1
M K Cordle 《Journal of animal science》1988,66(2):413-433
The National Residue Program conducted by the Food Safety and Inspection Service (FSIS) of the USDA includes a comprehensive testing program for residues of pesticides, drugs and other chemical contaminants in meat and poultry. Prevention strategies encourage producers to adopt quality control measures in their production management to prevent illegal residues in food. These activities have been effective in reducing the occurrence of violative residues and the potential for adverse health effects. Overall, the number of domestic monitoring samples containing violative residues is low-about 1% of samples tested. Violative residues are found less frequently in poultry than in livestock. More occur in swine than in other species; the least number occur in fed cattle and broilers. Testing results over the last 10 yr show that most drugs and pesticides used to enhance agricultural productivity are not causing a residue problem in meat and poultry. However, the FSIS cannot be complacent about its program achievements. Unacceptably high incidences of violative residues of certain drugs, namely, sulfonamides and antibiotics, still occur in particular production classes. For example, the incidence of violative sulfonamide residues in liver samples from swine slaughtered in 1985 was about 6%, with significant differences between geographical areas. An estimated 2.5% of market hogs had violative sulfamethazine residues in the muscle tissue. The FSIS is taking steps to correct this and other residue problems by strengthening the link between residue detection and enforcement and by expanding its analytical capability to monitor for residues. 相似文献
19.
20.
J Gilka V Gajd?sková M Malíková J Masek H Docekalová R Hais A Láníková M Pavlasová 《Veterinární medicína》1987,32(12):721-730
The residues of antimicrobial substances, some chlorinated and organophosphate pesticides and chemical elements were studied in the meat and organs of a group of bulls fed food-waste paste for 240 days and a group of bulls fed the same paste with an addition of poultry waste. These residues were also studied in the tissues of pigs fed the food-waste paste for 135 and 151 days until slaughter. The feed ingredients were also examined during the feeding trials. Although some of the residues under study were found in the tissues of the test animals at increased amounts, their concentrations were diluted in the tissues in the majority of cases when the feed pastes were administered. All residue contents recorded in the tissues remained below the permissible limits as given in valid instructions and directives so that the products, i. e. meat and organs, could be deemed digestible on the basis of hygienic evaluation. Hence, from the point of view of the occurrence of residues of foreign substances in edible tissues, the administration of food-waste pastes to farm animals can be considered as admissible. 相似文献