Use of anticholinergics in veterinary anaesthesia

This viewpoint examines the time-honoured and popular use of anti-cholinergics in veterinary anaesthesia. The disadvantages of routine use and specific indications for the use of these useful drugs are discussed.     

The epidemiology and economics of pooled testing for disease investigations of lead exposure involving beef cattle in Saskatchewan (2007–2019)

From 2007 to 2019, the Western College of Veterinary Medicine Disease Investigation Unit conducted lead investigations in 12 beef cow-calf herds and tested 1104 presumed exposed but clinically unaffected cattle, 49 of which were unsafe for slaughter (blood lead ≥ 0.1 ppm). In all investigations, the lead source should be evaluated, and all potentially exposed animals intended for food should be tested. Clinically affected animals should be tested individually. Individual testing of clinically unaffected animals may be expensive for large groups. However, pooling a conservative number of blood samples (n = 2 to 5) from clinically unaffected cattle may efficiently identify groups that are safe for slaughter. If a pooled test produces a blood lead concentration over the minimum threshold (0.1 ppm/n), these samples should be individually re-tested. Herd size, lead toxicity prevalence, pool size, and number of pools that require individual re-testing all affect the potential cost savings of pooled testing.     

如何保持饲料的清洁

<正>两年前,欧盟要求欧洲食品安全局(European Food Safety Authority,EFSA)就动物性食品中的饲料微生物安全问题提供科学意见时,EFSA就把对欧洲饲料厂沙门     

母猪维生素短缺的危险

美国收集的证据表明,世界各地繁殖群母猪都处在微量养分供应不足的危险之中.许多母猪日粮都需要添加额外的维生素,除非这些母猪有其它的饲喂来源.     

共轭亚油酸在奶牛业中的应用——能承载多元市场目标吗?

共轭亚油酸(简称CLA),是牛奶和肉的天然成分,它具有抗癌、控制肥胖和糖尿病的作用,对人类健康有益。饲料工业研究得最多的CLA异构体是9顺11反异构体。为了生产全天然健康食品,人们从学术和商业开发上都作了许多努力,通过饲喂,将其融入牛奶和肉中。然而,近年来,奶牛科学家又聚焦到另一种CLA异构体——10反12顺异构体。饲喂这种特殊的异构体,能显著地降低乳脂的百分比和绝对量,而不影响饲料的摄入、牛奶蛋白质量以及整个产奶量。通过10反12顺CIA异构体抑制牛奶脂肪合成,为生产有益脂肪酸含量高,而总脂肪含量低的奶制品提供了可能性,开创了一个引人注目的CIA市场:高附加值、低脂肪的牛奶食品。