关于在饲料中使用肉粉,肉骨粉的几点建议

在我国饲料原料结构中，蛋白质饲料紧缺，特别是动物性蛋白饲料紧缺尤为严重，但许多饲料生产厂家习惯于用动物性蛋白饲料和植物性蛋白饲料配合来组成饲料成品的蛋白质，而动物性蛋白饲料又不愿使用价格昂贵鱼粉，因此他们就把目光投向了肉粉或肉骨粉。不可否认，肉粉和肉骨粉是一种动物性蛋白饲料，但好多饲料生产者往往因忽视了它的特性而造成了重大的损失。笔者认为饲料生产者在使用肉粉或肉骨粉前应该着重考虑以下几个问题： 　　1.检测 对肉粉和肉骨粉每批都要进行质量检测，不但要进行粗蛋白、粗脂肪、钙、磷、盐分等常规检测，还要进…     

坚定信心开拓创新进一步加强饲料质量交全监管工作

这次会议的主要任务是,全面总结饲料质量安全专项整治工作,分析当前饲料行业发展和饲料质量安全形势,研究进一步加强饲料、特别是蛋白饲料原料质量安全监管的有效措施,部署今年饲料质量安全监管重点工作.     

美科学家发现新的致死龙虾物质alkylphenols

饲料企业的平均利润率在下降，如果不控制好原料的质量，后果是严重的。投入的成本，最终不能通过养殖效益体现出来，整个环节都会出问题。饲料加工企业要警惕“新蛋白饲料”，对各种饲料要用显微镜检测审查。在美国，乙醇工业是目前发展最迅速的农业产业之一。当前，干法压榨酒精厂每年生产DDGS超过380万吨，据行业专家预计，到2005年工业生产DDGS将超过     

王智才司长在农业部蛋白饲料原料监管工作会议上强调 全面开展饲料执法年活动 加强饲料质量安全监管工作

1月22日,农业部在北京召开蛋白饲料原料监管工作会议.会议全面总结了饲料质量安全专项整治行动经验,分析了当前饲料质量安全形势,部署了2009年饲料质量安全监管重点工作.     

河南省蛋白饲料原料质量调查分析

随着河南省畜牧业和饲料工业的迅速发展,近几年蛋白饲料原料需求量逐年增加,原料品种日益增多。一些不法商贩和厂家利用目前蛋白饲料原料紧缺的现状,在饲料原料上大做文章,导致市场上饲料原料质量参差不齐。有些原料掺杂使假,严重影响了饲料工业的健康发展,给一些畜牧生产场家带来严重的经济损失。为了对我省饲料原料质量进行一次全面的了解,并为有关部门进行饲料质量管理和提高饲料质量提供科学依据,我们对1997年度河南省权威饲料分析部门的蛋白饲料原料化验结果进行了调查和分析,旨在对我省常见蛋白饲料原料质量情况作出客观评价…     

总结经验分析形势进一步加强饲料质量安全监管农业部蛋白饲料原料监管工作会议在京召开

[本刊讯]为全面总结饲料质量安全整治行动经验,分析当前饲料质量安全形势,明确下一阶段饲料质量安全监管工作的任务和重点,1月22日,农业部蛋白饲料原料监管工作会议在京召开.     

微生物蛋白饲料促进仔猪生长的试验

选用日龄和体质量相近,发育正常的80头杜×长×大三元杂交健康仔猪,随机分成.4组,分别为对照组,10%、20%和30%微生物蛋白饲料组.每组设2个重复,每重复10头猪,试验期28 d.结果显示,10%、20%和30%微生物蛋白饲料组的日增质量分别比对照组提高10.2%、12.5%和16.1%.各微生物蛋白饲料组的饲料利用率均显著高于对照组,以30%微生物蛋白饲料组最高.试验结果表明,在日粮中添加微生物蛋白饲料能显著改善猪的生产性能.     

显微镜检在饲料质量监测上的应用

显微镜检在饲料质量监测上的应用陈建新，刘翠珍（广东省农科院畜牧研究所广州５１０６４０）１饲料显微镜检测及相关技术饲料显微镜检测原理就是借助显微镜扩展人眼功能，依据各种饲料原料的色泽、硬度、组织形态、细胞形态及某不同的染色特性等，对单独的或者混合的饲料...     

不同方法测定饲料粗蛋白质的比较

粗蛋白质是饲料的重要指标,也是饲料产品的必检指标。本试验选择采用传统的半微量定氮法和两种不同型号的全自动凯氏定氮仪法对10种蛋白饲料原料中的粗蛋白质含量进行检测,分析不同方法的准确度,为饲料质量检测分析检测技术提供参考。试验结果表明,全自动凯氏定氮仪更适合大批量样品的检测,而且检测精度更高。     

总结经验．分析形势．进一步加强饲料质量安全监管——农业部蛋白饲料原料监管工作会议在京召开

为全面总结饲料质量安全整治行动经验．分析当前饲料质量安全形势．部署下一阶段工作．1月22日．农业部组织部分蛋白饲料原料主产省的省级及地市级畜牧饲料管理部门负责人召开蛋白饲料原料监管工作会议。农业部畜牧业司司长、全国饲料工作办公室主任王智才．农业部畜牧业司副司长王宗礼．全国畜牧总站副站长、中国饲料工业协会副秘书长沙玉圣．     

猪毛色遗传的研究进展

本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。     

癸氧喹酯干混悬剂含量测定的改进

采用高效液相色谱法测定癸氧喹酯干混悬剂的含量,在2-250μg/mL范围内,峰面积的常用对数与进样量浓度的常用对数呈良好的线性关系,R^2=1(n=5),平均回收率为99.24%~99.51%,RSD在0.05%~0.28%。此方法分析时间短,样品前处理简便、定量结果准确,重现性好,结果满意,为其质量控制提供了依据。     

商会自治的基石——商会自治规范研究

在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。     

Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF

Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo.     

Mechanism of Action of Probiotic Function of Lactobacilli

乳酸杆菌作为益生菌广泛用于人和动物.本文综述了乳酸杆菌改善宿主健康的机制.乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道.文章重点讨论了乳酸杆菌表面成分(表面蛋白、脂磷壁酸和肽聚糖)与肠道受体(C型凝集素受体、Toll样受体和Nod样受体),阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制.     

中华人民共和国农业部公告 第267号

为贯彻落实《兽药生产质量管理规范》(简称《兽药GMP》),进一步推动兽药GMP实施进程,我部制定了《兽药生产质量管理规范检查验收办法》,现予公告。本公告自2003年6月1日起施行。附件:兽药生产质量管理规范检查验收办法二○○三年四月十日第一章 总则 第一条 为推动《兽药生产质量管理规范》(以下简称兽药GMP)的实施,规范兽药GMP检查验收工作,制定本办法。 第二条 农业部负责全国兽药GMP管理和检查验收工作;负责制修订兽药GMP检查验收管理规定;负责兽药GMP检查员队伍建设和监督管理工作,负责国际兽药贸易中GMP互认工作。 …     

鸡败血支原体垂直传播模式及其阻断方法

以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。     

Comparison of 2 methods of centesis of the bursa of the biceps brachii tendon of horses

REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air.     

不同样本商品蜂蜜中硒含量的测定

用硝酸和高氯酸消化蜂蜜,使硒游离出来,在微酸性环境下,硒和2,3-二氨基萘(DAN)生成有较强荧光的物质,用环己烷萃取,在激发波长378nm,荧光波长518nm处测定其荧光强度。蜂蜜中硒含量范围:0.10～0.82μg/g。表明:蜂蜜应视为天然富硒营养品。