منابع مشابه
Breeding replacement gilts for organic pig herds.
In this study, breeding structures and commercial sow lines were evaluated by economic and genetic simulation studies for their suitability to provide the Dutch organic pig sector with replacement gilts. Sow and litter performance from over 2000 crossbred sows from 2006 to 2007 were collected on 11 to 14 Dutch organic pig herds, respectively, and compared with conventional herds. Results showed...
متن کاملDetection of swine torque teno virus in Italian pig herds.
Anellovirus is a recently created, floating genus of viruses. Torque teno virus (TTV), the type species in the genus, was first discovered in a human patient with a post-transfusion hepatitis of unknown aetiology. Recently, TTV genetically related to but distinct from those discovered in humans have also been found in animals, including pigs. The aims of this study were to estimate the prevalen...
متن کاملEpidemiological investigations on Lawsonia intracellularis infections in pig herds
Objective: A serological screening study was carried out to determine the prevalence of Lawsonia (L.) intracellularis infections in German pig herds. Additionally a cross-sectional study of eight farrow-to-finish herds which was designed to investigate the dynamics of seroconversion. In addition, bacteriological tests were carried out on faec-al and intestinal samples from herds with diarrhoea ...
متن کاملInvestigation of growth rate variation between commercial pig herds.
The study was designed to provide quantifiable information on both within- and between-herd variation in pig growth rate from birth to slaughter and to examine how this was influenced by moving pigs at a common age to a common environment. Five litters were selected from each of eight pig herds in Northern Ireland with varying growth performance. All eight herds were offered the same nutritiona...
متن کاملPig Herds Free from Human Pathogenic Yersinia enterocolitica1
Pork products are a substantial source of human yersiniosis, a foodborne disease caused by Yersinia enterocolitica. Thus, the ability to eliminate this agent from pig herds would be an important step in producing human pathogen-free pork. Pig herds free from Y. enterocolitica O:3/biovar 4 have been established and maintained. According to serologic and cultural testing results, 15 of 16 specifi...
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ژورنال
عنوان ژورنال: Epidemiology and Infection
سال: 2016
ISSN: 0950-2688,1469-4409
DOI: 10.1017/s0950268816000868