A stochastic model accommodating the FAMACHA© system for estimating worm burdens and associated risk factors in sheep naturally infected with Haemonchus contortus
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منابع مشابه
A stochastic model accommodating the FAMACHA© system for estimating worm burdens and associated risk factors in sheep naturally infected with Haemonchus contortus.
A previously developed multiple regression algorithm was used as the basis of a stochastic model to simulate worm burdens in sheep naturally infected with Haemonchus contortus over five consecutive Haemonchus seasons (November to January/February) on a farm in the summer rainfall region in South Africa, although only one season is discussed. The algorithm associates haemoglobin levels with worm...
متن کاملA stochastic model to estimate worm burdens and associated risk factors in sheep naturally infected with Haemonchus contortus
Risk can be defined as the possibility of loss or injury coupled to the probability of such loss or injury (Singh 2000), and the main components of risk analysis are risk assessment, risk management and risk communication (Thrusfield 2001). Quantitative risk assessment is defined as a mathematical model containing inputs and outputs which are expressed numerically (Murray 2004). The work in the...
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Haemonchus contortus is a blood-sucking abomasal helminth of small ruminants responsible for major economic losses to producers worldwide. Widespread resistance to commercial anthelmintics has created a need for alternative methods of parasite control. One method involves using plant products with natural anthelmintic properties. This thesis assessed the efficacy of several plant products again...
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Infections with Haemonchus contortus are a major constraint on ruminant health world-wide. Young lambs are very sensitive to Haemonchus infection. Older lambs and sheep acquire immunity after a continuous or seasonal exposure to the parasite. The mechanisms underlying immunity are still not completely understood. Antibodies, in particular local IgA and IgE, certainly play a role. The role of Ig...
متن کاملCorrection: The bacterial community associated with the sheep gastrointestinal nematode parasite Haemonchus contortus
[This corrects the article DOI: 10.1371/journal.pone.0192164.].
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ژورنال
عنوان ژورنال: Veterinary Parasitology
سال: 2011
ISSN: 0304-4017
DOI: 10.1016/j.vetpar.2011.01.042