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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
11/04/1996 |
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Data da última atualização: |
24/05/2023 |
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Autoria: |
GARCIA, A.; NEARY, M. K.; KELLY, G. R.; PIERSON, R. A. |
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Título: |
Accuary of ultrasonography in early pregnance diagnosis in the ewe. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Theriogenology, v. 39, n. 4, p. 847-861, Apr. 1993. |
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DOI: |
https://doi.org/10.1016/0093-691X(93)90423-3 |
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Idioma: |
Inglês |
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Conteúdo: |
Nonbred and pregnant ewes were examined ultrasonographically at intervals of 4 to 6 days on Days 17 to 34 after estrus. Each ewe was diagnosed as pregnant or nonpregnant, and a score for degree of certainty in the diagnosis was recorded. The goal of the study was to define criteria that could be used for identification and accuracy of diagnosis of an early conceptus and to ascertain the confidence which the operator had in makeing the diagnosis. Pregnancy was retrospectively confirmed by ultrasonographic detection of an embryo proper and by embryonic heartbeat on Days 21 to 34, and later judged against the number of lambs born to each ewe. The percentage of ewes accurately diagnosed pregnant by ultrasonography was not significantly higher than that by guessing (50%) before Day 24, but reached 85% on Days 32 and 34. However, the ability to detect nonpregnant ewes by ultrasonography was higher (P<0.01), with a greater specificity starting on Days 21 to 23 (80%) and reaching 98% by Days 32 to 34. Before Day 24, the diagnosis of pregnancy in many cases was based primarily upon the ultrasonographic appearance of the uterine lumen and location of the uterus in relation to the bladder rather than upon detection of the conceptus. For the certainty score there was a main effect of day (P<0.01) but not for the reproductive status (pregnant vs nonpregnant). The certainty score increased in ail ewes among days, and was highest on Days 32 to 34. It was concluded that real time transrectal ultrasonographic scanning of sheep between Days 24 and 34 of gestation offers a safe, accurate and practical means for diagnoslng pregnancy. MenosNonbred and pregnant ewes were examined ultrasonographically at intervals of 4 to 6 days on Days 17 to 34 after estrus. Each ewe was diagnosed as pregnant or nonpregnant, and a score for degree of certainty in the diagnosis was recorded. The goal of the study was to define criteria that could be used for identification and accuracy of diagnosis of an early conceptus and to ascertain the confidence which the operator had in makeing the diagnosis. Pregnancy was retrospectively confirmed by ultrasonographic detection of an embryo proper and by embryonic heartbeat on Days 21 to 34, and later judged against the number of lambs born to each ewe. The percentage of ewes accurately diagnosed pregnant by ultrasonography was not significantly higher than that by guessing (50%) before Day 24, but reached 85% on Days 32 and 34. However, the ability to detect nonpregnant ewes by ultrasonography was higher (P<0.01), with a greater specificity starting on Days 21 to 23 (80%) and reaching 98% by Days 32 to 34. Before Day 24, the diagnosis of pregnancy in many cases was based primarily upon the ultrasonographic appearance of the uterine lumen and location of the uterus in relation to the bladder rather than upon detection of the conceptus. For the certainty score there was a main effect of day (P<0.01) but not for the reproductive status (pregnant vs nonpregnant). The certainty score increased in ail ewes among days, and was highest on Days 32 to 34. It was concluded that real time transrecta... Mostrar Tudo |
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Palavras-Chave: |
Ultrason. |
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Thesagro: |
Diagnostico; Ovino; Prenhez; Reprodução. |
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Thesaurus Nal: |
Ewes; Pregnancy diagnosis; Reproduction; Sheep; Ultrasonography. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02430naa a2200289 a 4500
001 1516363
005 2023-05-24
008 1993 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/0093-691X(93)90423-3$2DOI
100 1 $aGARCIA, A.
245 $aAccuary of ultrasonography in early pregnance diagnosis in the ewe.$h[electronic resource]
260 $c1993
520 $aNonbred and pregnant ewes were examined ultrasonographically at intervals of 4 to 6 days on Days 17 to 34 after estrus. Each ewe was diagnosed as pregnant or nonpregnant, and a score for degree of certainty in the diagnosis was recorded. The goal of the study was to define criteria that could be used for identification and accuracy of diagnosis of an early conceptus and to ascertain the confidence which the operator had in makeing the diagnosis. Pregnancy was retrospectively confirmed by ultrasonographic detection of an embryo proper and by embryonic heartbeat on Days 21 to 34, and later judged against the number of lambs born to each ewe. The percentage of ewes accurately diagnosed pregnant by ultrasonography was not significantly higher than that by guessing (50%) before Day 24, but reached 85% on Days 32 and 34. However, the ability to detect nonpregnant ewes by ultrasonography was higher (P<0.01), with a greater specificity starting on Days 21 to 23 (80%) and reaching 98% by Days 32 to 34. Before Day 24, the diagnosis of pregnancy in many cases was based primarily upon the ultrasonographic appearance of the uterine lumen and location of the uterus in relation to the bladder rather than upon detection of the conceptus. For the certainty score there was a main effect of day (P<0.01) but not for the reproductive status (pregnant vs nonpregnant). The certainty score increased in ail ewes among days, and was highest on Days 32 to 34. It was concluded that real time transrectal ultrasonographic scanning of sheep between Days 24 and 34 of gestation offers a safe, accurate and practical means for diagnoslng pregnancy.
650 $aEwes
650 $aPregnancy diagnosis
650 $aReproduction
650 $aSheep
650 $aUltrasonography
650 $aDiagnostico
650 $aOvino
650 $aPrenhez
650 $aReprodução
653 $aUltrason
700 1 $aNEARY, M. K.
700 1 $aKELLY, G. R.
700 1 $aPIERSON, R. A.
773 $tTheriogenology$gv. 39, n. 4, p. 847-861, Apr. 1993.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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