DESCRIPTION OF A SIMULATION-MODEL FOR THE POPULATION-DYNAMICS OF EIMERIA-ACERVULINA INFECTION IN BROILERS

被引：19

作者：

HENKEN, AM ^{[1
]}

PLOEGER, HW ^{[1
]}

GRAAT, EAM ^{[1
]}

CARPENTER, TE ^{[1
]}

机构：

[1] LAWRENCE LIVERMORE NATL LAB, SCH VET MED, DEPT EPIDEMIOL & PREVENT MED, DAVIS, CA 95616 USA

来源：

PARASITOLOGY | 1994年 / 108卷

关键词：

SIMULATION; EIMERIA ACERVULINA; COCCIDIOSIS; ANTICOCCIDIAL DRUG EFFICACY; HOST IMMUNITY; BROILERS;

D O I：

10.1017/S0031182000077362

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

A simulation model for the population dynamics of Eimeria acervulina infection in broilers is presented. The model describes the development of the numbers of parasites in the various life-stages during the growing period of broilers and the empty house period between grow-outs. The model includes assumptions with respect to development of immunity to E. acervulina infection and effects of application of anticoccidial drugs. The model consists of a set of difference equations that are solved numerically at 1 h intervals. Under constant conditions, an equilibrium level was reached after a few grow-outs during which infection always peaked around the 21st day in the growing period. Within a growing period, infection peaked earlier (later) than the 21st day in case initial numbers of sporulated oocysts were higher (lower) than the equilibrium number.

引用

页码：503 / 512

页数：10

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