Factors associated with the incidence of bacterial gill disease in salmonid lots reared in Ontario, Canada government hatcheries
Bacterial gill disease (BGD) (causative agent: Flavobacterium branchiophilum) has been a persistent problem in early-rearing salmonids in the Ontario Ministry of Natural Resources (OMNR) fish hatchery system. Retrospective epidemiological investigations of BGD diagnoses and treatments in OMNR fish h...
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| Veröffentlicht in: | Preventive veterinary medicine 2008-03, Vol.83 (3-4), p.297-307 |
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| creator | Good, Christopher M. Thorburn, Margaret A. Stevenson, Roselynn M.W. |
| description | Bacterial gill disease (BGD) (causative agent: Flavobacterium branchiophilum) has been a persistent problem in early-rearing salmonids in the Ontario Ministry of Natural Resources (OMNR) fish hatchery system. Retrospective epidemiological investigations of BGD diagnoses and treatments in OMNR fish hatcheries during the period 1991–2001 were conducted using University of Guelph Fish Health Laboratory and OMNR central office data. All investigations were conducted at the lot-level, which is the major within-hatchery-level of population aggregation. Survivorship of BGD diagnosis in early-rearing lots within seven individual hatcheries ranged from 84.2 to 100%; within individual species groups, survivorship was lowest (84.6%) in brook trout (Salvelinus fontinalis) lots. Annual risk percentages (cumulative incidence) for BGD diagnosis within hatchery and species groups varied considerably among years. Multivariable proportional hazards survival analysis indicated that the species brook trout, and the Spring (March–May) season, were significantly associated with treatment for BGD. Combined, these results emphasize the importance of hatchery, species, and time on the development of BGD. Future observational research on this disease must consider these factors in their design and analysis. |
| doi_str_mv | 10.1016/j.prevetmed.2007.08.007 |
| format | Article |
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Retrospective epidemiological investigations of BGD diagnoses and treatments in OMNR fish hatcheries during the period 1991–2001 were conducted using University of Guelph Fish Health Laboratory and OMNR central office data. All investigations were conducted at the lot-level, which is the major within-hatchery-level of population aggregation. Survivorship of BGD diagnosis in early-rearing lots within seven individual hatcheries ranged from 84.2 to 100%; within individual species groups, survivorship was lowest (84.6%) in brook trout (Salvelinus fontinalis) lots. Annual risk percentages (cumulative incidence) for BGD diagnosis within hatchery and species groups varied considerably among years. Multivariable proportional hazards survival analysis indicated that the species brook trout, and the Spring (March–May) season, were significantly associated with treatment for BGD. Combined, these results emphasize the importance of hatchery, species, and time on the development of BGD. Future observational research on this disease must consider these factors in their design and analysis.</description><identifier>ISSN: 0167-5877</identifier><identifier>EISSN: 1873-1716</identifier><identifier>DOI: 10.1016/j.prevetmed.2007.08.007</identifier><identifier>PMID: 17945368</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animals ; Aquaculture ; Bacterial gill disease ; disease diagnosis ; disease incidence ; Disease Outbreaks - veterinary ; epidemiological studies ; Epidemiology ; Female ; Fish disease ; Fish Diseases - epidemiology ; fish hatcheries ; Fisheries ; Flavobacteriaceae Infections - epidemiology ; Flavobacteriaceae Infections - veterinary ; Flavobacterium - pathogenicity ; Flavobacterium branchiophilum ; Gills - microbiology ; Gills - pathology ; governmental programs and projects ; Incidence ; Male ; mortality ; Multivariate Analysis ; Ontario - epidemiology ; Population Surveillance ; Proportional Hazards Models ; Retrospective Studies ; risk assessment ; Risk Factors ; Salmonidae ; Salmonidae - microbiology ; Salmonids ; Salvelinus fontinalis ; seasonal variation ; Seasons ; Species Specificity ; Survival Analysis</subject><ispartof>Preventive veterinary medicine, 2008-03, Vol.83 (3-4), p.297-307</ispartof><rights>2007 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c442t-857b009db0c08ac6cec7727eba65727385ffa7c3e7435dfeb27102fbef711b7a3</citedby><cites>FETCH-LOGICAL-c442t-857b009db0c08ac6cec7727eba65727385ffa7c3e7435dfeb27102fbef711b7a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.prevetmed.2007.08.007$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17945368$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Good, Christopher M.</creatorcontrib><creatorcontrib>Thorburn, Margaret A.</creatorcontrib><creatorcontrib>Stevenson, Roselynn M.W.</creatorcontrib><title>Factors associated with the incidence of bacterial gill disease in salmonid lots reared in Ontario, Canada government hatcheries</title><title>Preventive veterinary medicine</title><addtitle>Prev Vet Med</addtitle><description>Bacterial gill disease (BGD) (causative agent: Flavobacterium branchiophilum) has been a persistent problem in early-rearing salmonids in the Ontario Ministry of Natural Resources (OMNR) fish hatchery system. Retrospective epidemiological investigations of BGD diagnoses and treatments in OMNR fish hatcheries during the period 1991–2001 were conducted using University of Guelph Fish Health Laboratory and OMNR central office data. All investigations were conducted at the lot-level, which is the major within-hatchery-level of population aggregation. Survivorship of BGD diagnosis in early-rearing lots within seven individual hatcheries ranged from 84.2 to 100%; within individual species groups, survivorship was lowest (84.6%) in brook trout (Salvelinus fontinalis) lots. Annual risk percentages (cumulative incidence) for BGD diagnosis within hatchery and species groups varied considerably among years. Multivariable proportional hazards survival analysis indicated that the species brook trout, and the Spring (March–May) season, were significantly associated with treatment for BGD. Combined, these results emphasize the importance of hatchery, species, and time on the development of BGD. Future observational research on this disease must consider these factors in their design and analysis.</description><subject>Animals</subject><subject>Aquaculture</subject><subject>Bacterial gill disease</subject><subject>disease diagnosis</subject><subject>disease incidence</subject><subject>Disease Outbreaks - veterinary</subject><subject>epidemiological studies</subject><subject>Epidemiology</subject><subject>Female</subject><subject>Fish disease</subject><subject>Fish Diseases - epidemiology</subject><subject>fish hatcheries</subject><subject>Fisheries</subject><subject>Flavobacteriaceae Infections - epidemiology</subject><subject>Flavobacteriaceae Infections - veterinary</subject><subject>Flavobacterium - pathogenicity</subject><subject>Flavobacterium branchiophilum</subject><subject>Gills - microbiology</subject><subject>Gills - pathology</subject><subject>governmental programs and projects</subject><subject>Incidence</subject><subject>Male</subject><subject>mortality</subject><subject>Multivariate Analysis</subject><subject>Ontario - epidemiology</subject><subject>Population Surveillance</subject><subject>Proportional Hazards Models</subject><subject>Retrospective Studies</subject><subject>risk assessment</subject><subject>Risk Factors</subject><subject>Salmonidae</subject><subject>Salmonidae - microbiology</subject><subject>Salmonids</subject><subject>Salvelinus fontinalis</subject><subject>seasonal variation</subject><subject>Seasons</subject><subject>Species Specificity</subject><subject>Survival Analysis</subject><issn>0167-5877</issn><issn>1873-1716</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkbFu2zAQhomiQeMmeYWGU6dIPUqWSI-B0aQFAmRoMhMn8mTTkESXpB1066OXgo2snX6A_O7n4SNjtwJKAaL9tiv3gY6URrJlBSBLUGWOD2whlKwLIUX7kS0yKYtGSXnJPse4A4C2Vc0ndinkatnUrVqwvw9okg-RY4zeOExk-ZtLW562xN1knKXJEPc97zJIweHAN24YuHWRMM4MjziMfnKWDz5FHghDLsnnz1PC4PwdX-OEFvnGHylMI02JbzGZbW6jeM0uehwi3Zzzir0-fH9Z_yienh9_ru-fCrNcVqlQjewAVrYDAwpNa8hIWUnqsG1y1qrpe5SmJrmsG9tTV0kBVd9RL4XoJNZX7Oupdx_87wPFpEcXDQ0DTuQPUUuoVNvWdQblCTTBxxio1_vgRgx_tAA9y9c7_S5fz_I1KJ0jT345P3Ho5rv3ubPtDNyegB69xk1wUb_-qkDUAEqKZrXKxP2JoKzi6CjoaNz8A9YFMklb7_67xj9Q8aZT</recordid><startdate>20080317</startdate><enddate>20080317</enddate><creator>Good, Christopher M.</creator><creator>Thorburn, Margaret A.</creator><creator>Stevenson, Roselynn M.W.</creator><general>Elsevier B.V</general><general>Amsterdam; New York: Elsevier</general><scope>6I.</scope><scope>AAFTH</scope><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20080317</creationdate><title>Factors associated with the incidence of bacterial gill disease in salmonid lots reared in Ontario, Canada government hatcheries</title><author>Good, Christopher M. ; Thorburn, Margaret A. ; Stevenson, Roselynn M.W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c442t-857b009db0c08ac6cec7727eba65727385ffa7c3e7435dfeb27102fbef711b7a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Animals</topic><topic>Aquaculture</topic><topic>Bacterial gill disease</topic><topic>disease diagnosis</topic><topic>disease incidence</topic><topic>Disease Outbreaks - veterinary</topic><topic>epidemiological studies</topic><topic>Epidemiology</topic><topic>Female</topic><topic>Fish disease</topic><topic>Fish Diseases - epidemiology</topic><topic>fish hatcheries</topic><topic>Fisheries</topic><topic>Flavobacteriaceae Infections - epidemiology</topic><topic>Flavobacteriaceae Infections - veterinary</topic><topic>Flavobacterium - pathogenicity</topic><topic>Flavobacterium branchiophilum</topic><topic>Gills - microbiology</topic><topic>Gills - pathology</topic><topic>governmental programs and projects</topic><topic>Incidence</topic><topic>Male</topic><topic>mortality</topic><topic>Multivariate Analysis</topic><topic>Ontario - epidemiology</topic><topic>Population Surveillance</topic><topic>Proportional Hazards Models</topic><topic>Retrospective Studies</topic><topic>risk assessment</topic><topic>Risk Factors</topic><topic>Salmonidae</topic><topic>Salmonidae - microbiology</topic><topic>Salmonids</topic><topic>Salvelinus fontinalis</topic><topic>seasonal variation</topic><topic>Seasons</topic><topic>Species Specificity</topic><topic>Survival Analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Good, Christopher M.</creatorcontrib><creatorcontrib>Thorburn, Margaret A.</creatorcontrib><creatorcontrib>Stevenson, Roselynn M.W.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Preventive veterinary medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Good, Christopher M.</au><au>Thorburn, Margaret A.</au><au>Stevenson, Roselynn M.W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Factors associated with the incidence of bacterial gill disease in salmonid lots reared in Ontario, Canada government hatcheries</atitle><jtitle>Preventive veterinary medicine</jtitle><addtitle>Prev Vet Med</addtitle><date>2008-03-17</date><risdate>2008</risdate><volume>83</volume><issue>3-4</issue><spage>297</spage><epage>307</epage><pages>297-307</pages><issn>0167-5877</issn><eissn>1873-1716</eissn><abstract>Bacterial gill disease (BGD) (causative agent: Flavobacterium branchiophilum) has been a persistent problem in early-rearing salmonids in the Ontario Ministry of Natural Resources (OMNR) fish hatchery system. Retrospective epidemiological investigations of BGD diagnoses and treatments in OMNR fish hatcheries during the period 1991–2001 were conducted using University of Guelph Fish Health Laboratory and OMNR central office data. All investigations were conducted at the lot-level, which is the major within-hatchery-level of population aggregation. Survivorship of BGD diagnosis in early-rearing lots within seven individual hatcheries ranged from 84.2 to 100%; within individual species groups, survivorship was lowest (84.6%) in brook trout (Salvelinus fontinalis) lots. Annual risk percentages (cumulative incidence) for BGD diagnosis within hatchery and species groups varied considerably among years. Multivariable proportional hazards survival analysis indicated that the species brook trout, and the Spring (March–May) season, were significantly associated with treatment for BGD. Combined, these results emphasize the importance of hatchery, species, and time on the development of BGD. 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| source | MEDLINE; ScienceDirect Journals (5 years ago - present) |
| subjects | Animals Aquaculture Bacterial gill disease disease diagnosis disease incidence Disease Outbreaks - veterinary epidemiological studies Epidemiology Female Fish disease Fish Diseases - epidemiology fish hatcheries Fisheries Flavobacteriaceae Infections - epidemiology Flavobacteriaceae Infections - veterinary Flavobacterium - pathogenicity Flavobacterium branchiophilum Gills - microbiology Gills - pathology governmental programs and projects Incidence Male mortality Multivariate Analysis Ontario - epidemiology Population Surveillance Proportional Hazards Models Retrospective Studies risk assessment Risk Factors Salmonidae Salmonidae - microbiology Salmonids Salvelinus fontinalis seasonal variation Seasons Species Specificity Survival Analysis |
| title | Factors associated with the incidence of bacterial gill disease in salmonid lots reared in Ontario, Canada government hatcheries |
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