Nonsurgical videolaparoscopy for determination of reproductive status of the Arctic charr
The efficient commercial production of Arctic charr is hampered by the limited and subtle sexual dimorphism shown by this species. This project examined the feasibility of low-cost videoendoscopy through the genital pore to determine sex, stage of maturity, and safety for 80, randomly selected, anes...
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| Veröffentlicht in: | Canadian veterinary journal 1996-02, Vol.37 (2), p.96-100 |
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| creator | Ortenburger, A I Jansen, M E Whyte, S K |
| description | The efficient commercial production of Arctic charr is hampered by the limited and subtle sexual dimorphism shown by this species. This project examined the feasibility of low-cost videoendoscopy through the genital pore to determine sex, stage of maturity, and safety for 80, randomly selected, anesthetized Arctic charr. The sensitivity and specificity for correct assignment of male sex were 90% and 100%, respectively, among 3 observers in a single-blind design. Sensitivity and specificity for relative sexual maturity in the same fish were 96% and 54%, respectively. The observed mortality rate of 7% at the end of 3 weeks was confounded by the presence of unrelated disease. We conclude that the technique holds promise for application by producers to improve production efficiency. |
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This project examined the feasibility of low-cost videoendoscopy through the genital pore to determine sex, stage of maturity, and safety for 80, randomly selected, anesthetized Arctic charr. The sensitivity and specificity for correct assignment of male sex were 90% and 100%, respectively, among 3 observers in a single-blind design. Sensitivity and specificity for relative sexual maturity in the same fish were 96% and 54%, respectively. The observed mortality rate of 7% at the end of 3 weeks was confounded by the presence of unrelated disease. 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This project examined the feasibility of low-cost videoendoscopy through the genital pore to determine sex, stage of maturity, and safety for 80, randomly selected, anesthetized Arctic charr. The sensitivity and specificity for correct assignment of male sex were 90% and 100%, respectively, among 3 observers in a single-blind design. Sensitivity and specificity for relative sexual maturity in the same fish were 96% and 54%, respectively. The observed mortality rate of 7% at the end of 3 weeks was confounded by the presence of unrelated disease. We conclude that the technique holds promise for application by producers to improve production efficiency.</abstract><cop>Canada</cop><pmid>8640656</pmid><tpages>5</tpages></addata></record> |
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| identifier | ISSN: 0008-5286 |
| ispartof | Canadian veterinary journal, 1996-02, Vol.37 (2), p.96-100 |
| issn | 0008-5286 |
| language | eng |
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| source | MEDLINE; EZB-FREE-00999 freely available EZB journals; PubMed Central |
| subjects | Animals Equipment Safety - veterinary Feasibility Studies Female Freshwater Humans Laparoscopy - methods Laparoscopy - veterinary Male Marine Salmonidae - physiology Salvelinus alpinus Sensitivity and Specificity Sex Determination Analysis Sexual Maturation - physiology Single-Blind Method Video Recording - methods |
| title | Nonsurgical videolaparoscopy for determination of reproductive status of the Arctic charr |
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