Coronaviral gastroenteritis in pigs in Malaysia

Foo K. L., . and Too H. L., . and Sheikh Omar A. R., . Coronaviral gastroenteritis in pigs in Malaysia. pp. 45-51. ISSN 9128-2506

Outbreaks of diarrhea involving pigs of all age groups were reported by 24 farms in all the major pig rearing states of Peninsular Malaysia between the months of July and December 1994. Outbreaks of the disease were investigated in nine other farms. A diagnosis of coronaviral gastroenteritis possibly porcine epidemic diarrhoea or transmissible gastroenteritis was based on the presence of diarrhoea involving all pigs on affected farms post mortem findings of severe intestinal villous atrophy and demonstration of coronavirus particles in intestinal contents of affected piglets. Based on piglet mortality rapidity of spread and the extent of villous atrophy porcine epidemic diarrhoea was considered the more likely suspect. The intestinal villi:crypt ratio of infected piglets ranged between 2.0:1 and 2.6:1. Experimental infection of sows showed that the incubation period was within 24 to 48 h. All outbreaks in geographically isolated farms were associated with new pig introductions while in densely populated pig areas some outbreaks occurred without new introductions suggesting that transmission by fomites may be less important in hot tropical environments. The nationwide outbreak also indicated a highly susceptible pig population and a deficiency in quarantine measures governing the importation of pigs.

Full text available from: Official URL: https://www.mavma.org.my/1996-volume-8-issue-no-2-...

Abstract

Outbreaks of diarrhea involving pigs of all age groups were reported by 24 farms in all the major pig rearing states of Peninsular Malaysia between the months of July and December 1994. Outbreaks of the disease were investigated in nine other farms. A diagnosis of coronaviral gastroenteritis possibly porcine epidemic diarrhoea or transmissible gastroenteritis was based on the presence of diarrhoea involving all pigs on affected farms post mortem findings of severe intestinal villous atrophy and demonstration of coronavirus particles in intestinal contents of affected piglets. Based on piglet mortality rapidity of spread and the extent of villous atrophy porcine epidemic diarrhoea was considered the more likely suspect. The intestinal villi:crypt ratio of infected piglets ranged between 2.0:1 and 2.6:1. Experimental infection of sows showed that the incubation period was within 24 to 48 h. All outbreaks in geographically isolated farms were associated with new pig introductions while in densely populated pig areas some outbreaks occurred without new introductions suggesting that transmission by fomites may be less important in hot tropical environments. The nationwide outbreak also indicated a highly susceptible pig population and a deficiency in quarantine measures governing the importation of pigs.

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Item Type:	Article
AGROVOC Term:	Pigs
AGROVOC Term:	Coronavirus
AGROVOC Term:	Gastroenteritis
AGROVOC Term:	Disease outbreak
AGROVOC Term:	Diarrhoea
AGROVOC Term:	Farms
AGROVOC Term:	Epidemics
AGROVOC Term:	Postmortem diagnosis
AGROVOC Term:	Postmortem examination
AGROVOC Term:	Porcine coronavirus
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8863

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