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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
02/08/2023 |
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Autoria: |
KELLY, R. W.; NEWNHAM, J. P.; JOHNSON, T.; SPEIJERS, E. J. |
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Título: |
An ultrasound technique to measure placental growth in ewes. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Australian Journal of Agricultural Research, v. 38, n. 4, p. 757-764, 1987. |
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DOI: |
10.1071/AR9870757 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Changes in mean diameter of cotyledons were measured from day 45 to 141 of pregnancy using real time ultrasound on 40 3-6-year-old Merino ewes, averaging 46 kg liveweight at day 45, and carrying one foetus. Observations were made at about 2-weekly intervals. Half of the ewes were sacrificed at day 94 and the remainder at day 141 to correlate the observations taken during pregnancy with actual data. There was a significant quadratic relationship (P < 0.001) between mean cotyledon diameter and a square root transformation of day of pregnancy. Maximum diameter of the cotyledons, as estimated by real time ultrasound, occurred at the observation on day 80 of pregnancy. The between-ewe comparison of mean diameter of the cotyledons measured by ultrasound just prior to slaughter with actual mean diameter recorded at slaughter showed a significant correlation (P < 0.001) for both the day 94 (r = 0.69) and day 141 (r = 0.71) results. Within ewes, the correlation between diameter and weight of the cotyledon was high (0.92, 0.86 for days 94 and 141 respectively), and the slope of the linear regression was less (P < 0.001) on day 141 than day 94 (0.45 v 0.32). Eighty-three per cent of the variation between ewes in total weight of cotyledons on day 94 of pregnancy was accounted for by a regression using sex of foetus, number of cotyledons and mean diameter of cotyledons measured by ultrasound on day 80 of pregnancy. In comparison, for day 141 of pregnancy 49% of the variation between ewes in total weight of cotyledons was accounted for by a regression using mean diameter on day 66 of pregnancy and number of cotyledons. The technique has potential value in studying patterns of development of the cotyledons during pregnancy in the ewe, but further validation is necessary. MenosAbstract: Changes in mean diameter of cotyledons were measured from day 45 to 141 of pregnancy using real time ultrasound on 40 3-6-year-old Merino ewes, averaging 46 kg liveweight at day 45, and carrying one foetus. Observations were made at about 2-weekly intervals. Half of the ewes were sacrificed at day 94 and the remainder at day 141 to correlate the observations taken during pregnancy with actual data. There was a significant quadratic relationship (P < 0.001) between mean cotyledon diameter and a square root transformation of day of pregnancy. Maximum diameter of the cotyledons, as estimated by real time ultrasound, occurred at the observation on day 80 of pregnancy. The between-ewe comparison of mean diameter of the cotyledons measured by ultrasound just prior to slaughter with actual mean diameter recorded at slaughter showed a significant correlation (P < 0.001) for both the day 94 (r = 0.69) and day 141 (r = 0.71) results. Within ewes, the correlation between diameter and weight of the cotyledon was high (0.92, 0.86 for days 94 and 141 respectively), and the slope of the linear regression was less (P < 0.001) on day 141 than day 94 (0.45 v 0.32). Eighty-three per cent of the variation between ewes in total weight of cotyledons on day 94 of pregnancy was accounted for by a regression using sex of foetus, number of cotyledons and mean diameter of cotyledons measured by ultrasound on day 80 of pregnancy. In comparison, for day 141 of pregnancy 49% of the variation be... Mostrar Tudo |
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Palavras-Chave: |
Ultra-som; Ultrasound. |
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Thesagro: |
Fisiologia; Ovelha; Ovino; Placenta; Prenhez; Reprodução. |
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Thesaurus Nal: |
Physiology; Pregnancy; Reproduction; Sheep; Ultrasonography. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02652naa a2200325 a 4500
001 1521607
005 2023-08-02
008 1987 bl uuuu u00u1 u #d
024 7 $a10.1071/AR9870757$2DOI
100 1 $aKELLY, R. W.
245 $aAn ultrasound technique to measure placental growth in ewes.$h[electronic resource]
260 $c1987
520 $aAbstract: Changes in mean diameter of cotyledons were measured from day 45 to 141 of pregnancy using real time ultrasound on 40 3-6-year-old Merino ewes, averaging 46 kg liveweight at day 45, and carrying one foetus. Observations were made at about 2-weekly intervals. Half of the ewes were sacrificed at day 94 and the remainder at day 141 to correlate the observations taken during pregnancy with actual data. There was a significant quadratic relationship (P < 0.001) between mean cotyledon diameter and a square root transformation of day of pregnancy. Maximum diameter of the cotyledons, as estimated by real time ultrasound, occurred at the observation on day 80 of pregnancy. The between-ewe comparison of mean diameter of the cotyledons measured by ultrasound just prior to slaughter with actual mean diameter recorded at slaughter showed a significant correlation (P < 0.001) for both the day 94 (r = 0.69) and day 141 (r = 0.71) results. Within ewes, the correlation between diameter and weight of the cotyledon was high (0.92, 0.86 for days 94 and 141 respectively), and the slope of the linear regression was less (P < 0.001) on day 141 than day 94 (0.45 v 0.32). Eighty-three per cent of the variation between ewes in total weight of cotyledons on day 94 of pregnancy was accounted for by a regression using sex of foetus, number of cotyledons and mean diameter of cotyledons measured by ultrasound on day 80 of pregnancy. In comparison, for day 141 of pregnancy 49% of the variation between ewes in total weight of cotyledons was accounted for by a regression using mean diameter on day 66 of pregnancy and number of cotyledons. The technique has potential value in studying patterns of development of the cotyledons during pregnancy in the ewe, but further validation is necessary.
650 $aPhysiology
650 $aPregnancy
650 $aReproduction
650 $aSheep
650 $aUltrasonography
650 $aFisiologia
650 $aOvelha
650 $aOvino
650 $aPlacenta
650 $aPrenhez
650 $aReprodução
653 $aUltra-som
653 $aUltrasound
700 1 $aNEWNHAM, J. P.
700 1 $aJOHNSON, T.
700 1 $aSPEIJERS, E. J.
773 $tAustralian Journal of Agricultural Research$gv. 38, n. 4, p. 757-764, 1987.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
23/05/2001 |
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Data da última atualização: |
06/09/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ARAUJO, J. L. P.; CORREIA, R. C.; COSTA, N. D. |
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Afiliação: |
JOSE LINCOLN PINHEIRO ARAUJO, CPATSA; REBERT COELHO CORREIA, CPATSA; NIVALDO DUARTE COSTA, CPATSA. |
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Título: |
Variacao estacional de precos da abobora produzida na regiao do submedio Sao Francisco no periodo de 1986 a 1995. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Horticultura Brasileira, Brasília, v. 15, 1997. |
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Idioma: |
Português |
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Notas: |
Resumo 10. Suplemento. Edição dos Resumos do 37 Congresso Brasileiro de Olericultura, Manaus, 1997. |
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Conteúdo: |
Estudou-se a estacionalidade de preços da abóbora produzida na região do Submédio São Francisco durante o período de 1986 a 1995. |
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Palavras-Chave: |
Submedio Sao Francisco; Variacao; Variation. |
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Thesagro: |
Abóbora; Cucúrbita sp; Mercado; Preço. |
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Thesaurus NAL: |
prices; pumpkins; trade. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/182576/1/Horticultura-Brasileira-v.15-resumo-10-1997.pdf
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Marc: |
LEADER 00941nam a2200265 a 4500
001 1134177
005 2018-09-06
008 1997 bl uuuu u00u1 u #d
100 1 $aARAUJO, J. L. P.
245 $aVariacao estacional de precos da abobora produzida na regiao do submedio Sao Francisco no periodo de 1986 a 1995.
260 $aHorticultura Brasileira, Brasília, v. 15$c1997
500 $aResumo 10. Suplemento. Edição dos Resumos do 37 Congresso Brasileiro de Olericultura, Manaus, 1997.
520 $aEstudou-se a estacionalidade de preços da abóbora produzida na região do Submédio São Francisco durante o período de 1986 a 1995.
650 $aprices
650 $apumpkins
650 $atrade
650 $aAbóbora
650 $aCucúrbita sp
650 $aMercado
650 $aPreço
653 $aSubmedio Sao Francisco
653 $aVariacao
653 $aVariation
700 1 $aCORREIA, R. C.
700 1 $aCOSTA, N. D.
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