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	Provedor de dados 45 (3) Autor Losinger,W.C. (3) Bush,E.J. (1) Corso,B.A. (1) Fedorka-Cray,P.J. (1) Ferris,K.E. (1) Garber,L.P. (1) Ladely,S. (1) Morgan,K. (1) Sampath,R.K. (1) Smith,M.A. (1) Traub-Dargatz,J.L. (1) Mais... Palavra-chave Animal health (1) Equine operations (1) Logistic regression (1) Manure management (1) Mortality (1) National survey (1) Pig (1) Pork production (1) Returns to scale (1) Risk factor analysis (1) Swine (1) Swine grower/finisher (1) Waste production (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2002 (1) 2000 (1) 1999 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Economies of scale in the production of swine manure 45 Losinger,W.C.; Sampath,R.K.. Manure production on grower/finisher swine operations in the United States was examined using data from 184 grower/finisher swine operations that participated in the United States National Animal Health Monitoring System's 1995 National Swine Study. Two methods were used: one, assuming that pigs produced 8.4% of their body weight in manure each day; another using the difference between feed fed and weight gained as a proxy variable to study manure production. Using this latter approach, a production function was developed. The function exhibited diminishing returns to scale when food waste was not fed to pigs, but constant returns to scale when food waste was included in their diets. The difference between feed fed and weight gained was lower on operations... Tipo: Info:eu-repo/semantics/article Palavras-chave: Swine; Waste production; Manure management; Pork production; Returns to scale. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352000000300019 Mortality on grower/finisher-only swine operations in the United States 45 Losinger,W.C.; Bush,E.J.; Smith,M.A.; Corso,B.A.. For 53 grower/finisher-only swine operations that participated in the United States National Animal Health Monitoring System 1995 National Swine Study, mortality among finisher pigs ranged from 0 to 12.0% over a 6-month period. Twenty-six (49.1%) had <2% mortality, and 27 (50.9%) had >2% mortality. Nine (17.0%) operations experienced >4% mortality. Fisher's exact test revealed that operations with all-in all-out management were significantly more likely to have <2% mortality than operations with continuous management, and that operations where all finisher pigs came from farrowing units belonging to the operation (either on-site or off-site) were significantly more likely to have <2% mortality than operations where >1 grower/finisher pig... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pig; Swine grower/finisher; Mortality; Animal health. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09351999000200003 Factors associated with fecal-shedding of Salmonella spp by horses on US operations 45 Losinger,W.C.; Traub-Dargatz,J.L.; Garber,L.P.; Fedorka-Cray,P.J.; Ladely,S.; Ferris,K.E.; Morgan,K.. In a cross-sectional national study that included 972 operations with > 3 horses on 1/1/98 in 28 states in the USA, 8,417 fecal specimens were collected from horses and cultured to test for the presence of Salmonella spp. Operations were characterized as Salmonella spp-positive if at least one fecal specimen tested positive for Salmonella spp. Percentages of Salmonella spp-positive operations were computed by management and other factors (collected from operation-level questionnaires) that were hypothesized to be related to fecal shedding of Salmonella spp. A logistic-regression model was constructed to identify factors associated with horses’ shedding Salmonella spp in feces on an operation. The odds of an operation being Salmonella spp positive... Tipo: Info:eu-repo/semantics/article Palavras-chave: Equine operations; National survey; Risk factor analysis; Logistic regression. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352002000200001 Registros recuperados: 3 Primeira ... 1 ... Última

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