柔嫩艾美尔球虫野外株对3种聚醚类离子载体抗生素的敏感性试验

采用鸡体药效试验法测定了柔嫩艾美尔球虫对３种聚醚类离子载体抗生素的敏感性。试验证明，柔嫩艾美尔球虫野外分离株对盐霉素（６６×１０－６）、莫能菌素（１２０×１０－６）和拉沙菌素（１２５×１０－６）产生了耐药性。上述３种药物的抗球虫指数（ＡＣＩ）分别为１４９．３９、１３４．０４和１５６．１１。但这３种药物对柔嫩艾美尔球虫标准株仍然有效     

牛常见寄生虫病的诊治

1疥癣病症状患牛精神萎靡,消瘦贫血,生产性能下降。治疗杀螨虫药物只能杀死虫体,应消毒或消除患畜螨虫的传播途径,应将患畜的毛痂毛皮全部收集起来销毁。使用的消毒药物可用肥皂水、2%来苏儿,每年春秋皮下注射伊维菌素每千克体重100微克,也可用5克阿维菌素,400毫升二甲基亚砜,600毫升     

农户饲养小猪生长速度过慢的因素

<正>1断奶不合理农户养猪一般采取一次性断奶法,断奶后立即上市,使仔猪遭受断奶应激而影响增重。应当在断奶前5～6天,逐渐减少仔猪的哺乳次数,直至完全断     

特禽新品种——绿壳蛋鸡饲养技术

绿壳蛋鸡是一种集天然黑色食品与绿色食品为一体的特禽新品种。鸡蛋中含有大量的卵磷脂、维生素、赖氨酸,微量元素硒、碘、铁、锌的含量比普通鸡蛋高5～10倍。鸡肉肉质细嫩、鲜美,口感极好,具有滋阴补肾、生血补气、强身健脑的功效,是上等滋补佳品。     

一种快速客观的绿茶品质鉴定方法

本发明公开了一种快速客观的绿茶品质鉴定方法,依次包括以下步骤：1）将冲泡时间为5分钟,茶水比为1g：50ml的茶汤滤液与蒸馏水进行红绿色度差分析,     

贵州:安顺建设绿壳蛋鸡示范基地

<正>为加快贵州省安顺市农业产业结构调整工作进程,推进生态牧养绿壳蛋鸡示范基地建设项目实施进度,近日,该市畜牧兽医局组织各县、区畜牧兽医部门召开生态牧养绿壳蛋鸡示范基地建设项目推进现场观摩会。今年以来安顺市大力实施农业产业结构调整,推进生态畜牧业发展,全市共批复生态牧养绿壳蛋鸡示范基地     

The Productive Performance and the Correlation Analysis Between Hatchability and Egg Quality in Jiangxi Green-eggshell Layers

The purpose of this study was to provide the reference to Jiangxi Green-eggshell breeding through the analysis of laying performance, hatchability and egg quality in the first generation of Jiangxi Green-eggshell layers at 300-days old. 306 Jiangxi Green-eggshell layers and 80 eggs were selected to determine the laying performance, hatchability and egg quality among families, and the correlation between the hatchability and egg quality were analyzed also. The results were as fellows:The average body weight of these hens was 1 596.99 g, the average egg weight was 50.57 g, the average egg-laying number was 14.53, the average fertility rate was 93.69%, the average dead fertile egg rate was 5.55%, the average healthy chick rate was 84.3%, the average dead embryo egg rate was 13.9%, the average egg shape index was 1.28, the average Haugh unit was 71.77, and the average eggshell strength was 4.44 kg/cm². The healthy chick rate and the egg weight had significant correlation,as well as the eggshell color and the egg shape index (P < 0.05). The healthy chick rate had extremely significantly correlation with the dead fertile egg rate(P < 0.01), as well as the eggshell strength and the eggshell thickness (P < 0.01). Generally, the first generation of Jiangxi Green-eggshell layers had good egg quality, higher laying performance and hatchability, but they still need to be further selected.     

从营养和管理角度剖析蛋鸡啄肛、脱肛及瘫痪的实质

<正>蛋鸡脱肛、啄肛和瘫痪现象是既相互独立又相互关联的较常见疫病。虽然每天的死淘率不高,但由于其贯穿了蛋鸡的一生,且不同批次、不同的地域和不同的鸡场普遍发生,给整个蛋鸡养殖业造成的损失可观。1育成期的瘫鸡此阶段瘫痪现象少见,即使饲料的质量不高,有效磷水平较低也不会出现瘫痪。造成瘫鸡的主要原因是有意或无意使用了高钙日粮。解剖多表现肾肿、痛风,长     

氯化钠和葡萄糖对黑麦草绿汁发酵液发酵品质的影响

<正>绿汁发酵液(Fermented Green Juice,FGJ)是目前倍受关注的一种新型青贮添加剂,它具有取材方便、制作简单、成本低廉、安全环保等特点[1]。许多研究已确认,FGJ可以使附着在牧草表面的乳酸菌     

紫外分光光度法测定伊维菌素片的含量

用紫外分光光度法测定伊维菌素片中伊维菌素B1的含量。伊维菌素溶于甲醇 ,而辅料不溶 ,过滤分离出伊维菌素 ,于 2 0 0～ 4 0 0nm间扫描 ,在 2 38nm、2 4 5nm波长处有最大吸收峰。以2 4 5nm作检测波长 ,伊维菌素在 4～ 2 8μg /ml范围内与吸收度呈良好线性关系。用伊维菌素作对照品测得伊维菌素片的平均回收率为 10 0 13% ,RSD为 0 2 5 % ,n =5。紫外分光光度法具有快速、准确、易操作等优点。该方法对市场快速检测及生产厂家质量监控具有实用价值。