منابع مشابه
Modelling Salmonella spread within a farrow-to-finish pig herd.
Delivery of infected pigs to the slaughterhouse is a major source of pork meat contamination by bacterial hazards to humans. We propose a model of Salmonella spread within a farrow-to-finish pig herd, assuming the prevalence in infected delivered pigs depends on the whole pig life-time and growing process. This stochastic discrete-time model represents both the population dynamics in a farrow-t...
متن کاملImproving the Herd Management Using Genomic Information Improving within-herd selection
Genomic selection (GS) as theoretically introduced by Meuwissen et al. (2001) has been successfully implemented worldwide in dairy cattle breeding programs reflecting large populations, i.e., Holsteins, Fleckvieh, Jersey, and Brown Swiss, and has revolutionized conventional breeding schemes. Revolution of dairy cattle breeding programs via GS was the logical consequence due to the obvious possi...
متن کاملHerd and within-herd BoHV-1 prevalence among Irish beef herds submitting bulls for entry to a performance testing station
Infectious bovine rhinotracheitis (IBR), caused by bovine herpes virus 1 (BoHV-1), may result in various clinical consequences, including severe respiratory disease and conjunctivitis, venereal disease and reduced reproductive performance and abortion. This paper presents the serosurveillance findings from an intake of bulls into a performance testing station in Ireland during November 2007. Th...
متن کاملWithin-herd spread of contagious bovine pleuropneumonia in Ethiopian highlands.
Contagious bovine pleuropneumonia (CBPP) is a major threat for cattle health and production in Africa. This disease is caused by the small-colony type of Mycoplasma mycoides subspecies mycoides (MmmSC). Transmission occurs from direct and repeated contacts between sick and healthy animals. Veterinary services recently reported a resurgence of CBPP in the province of West Wellega, in the Ethiopi...
متن کاملAnimal Model Evaluation Within Herd Linked to National Evaluation
Computer programs with modest computational requirements were developed to calculate animal model evaluations on a herd basis. Evaluations are connected to the ~ t i d system through parents with national evaluations and parents assigned to unknown-parent groups. The programs can be used to compute evaluations of animals in herds not included in national evaluations or to update evaluaticms bet...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1963
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(63)89071-2