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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
08/01/2020 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TEIXEIRA, V. A.; COELHO, S. G.; TOMICH, T. R.; RODRIGUES, J. P. P.; CAMPOS, M. M.; MACHADO, F. S.; SILVA, M. V. G. B.; MONTEIRO, G. A.; PEREIRA, L. G. R. |
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Afiliação: |
Teixeira VA; Coelho SG; THIERRY RIBEIRO TOMICH, CNPGL; Pacheco Rodrigues JP; MARIANA MAGALHAES CAMPOS, CNPGL; FERNANDA SAMARINI MACHADO, CNPGL; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; Monteiro GA; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL. |
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Título: |
Reproductive characteristics of bulls from two breed compositions and their correlations with infrared thermography. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Thermal Biology, v. 85, article 102407, 2019. |
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DOI: |
https://doi.org/10.1016/j.jtherbio.2019.102407 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective was to evaluate reproductive characteristics of crossbred Girolando (Gyr x Holstein) bulls from two breed compositions and correlate these results with infrared thermography data. Evaluations were performed considering sperm motility, vigor and morphology; scrotal circumference; body morphology and temperament. Infrared thermography was performed to determine surface temperatures of ocular and scrotal areas. Thermoregulation capacity was assessed by differences between air and rectal temperatures, air and maximum temperatures in ocular and scrotal areas, and dorsal and ventral lines of the scrotum. Data analysis was performed using a linear mixed model (breed composition as fixed effect and year of evaluation as random effect). Spearman correlation coefficient was used to associate thermography and reproductive data. Girolando 3/4 Holstein bulls had higher (P ≤ 0.001) scrotal circumference and higher average body morphology and temperament, whereas 5/8 Holstein bulls had a higher (P < 0.001) percentage of major-type and total sperm defects. Girolando 3/4 Holstein bulls had scrotal temperatures 0.8 °C higher (P < 0.001) and 5/8 Holstein bulls had 9.8% and 10.6% higher differences on ?rectal ? scrotal area? and ?ocular area ? scrotal area? temperatures, respectively. Ocular area temperatures had negative correlations (P ≤ 0.1) with sperm motility and vigor, and positive correlations (P < 0.001) with minor-type and total sperm defects. Ventral line scrotal temperatures had positive correlations (P < 0.001) with minor-type and total sperm defects. Girolando 3/4 Holstein bulls were found to be superior to 5/8 Holstein bulls for reproductive characteristics. Under non-stressing climatic conditions, semen characteristics of Girolando bulls were more influenced by breed composition than by the capacity for scrotal thermoregulation. Correlations between semen quality and scrotal temperatures can aid in the identification of bulls for breeding, particularly when a large number of animals are in the tests. MenosThe objective was to evaluate reproductive characteristics of crossbred Girolando (Gyr x Holstein) bulls from two breed compositions and correlate these results with infrared thermography data. Evaluations were performed considering sperm motility, vigor and morphology; scrotal circumference; body morphology and temperament. Infrared thermography was performed to determine surface temperatures of ocular and scrotal areas. Thermoregulation capacity was assessed by differences between air and rectal temperatures, air and maximum temperatures in ocular and scrotal areas, and dorsal and ventral lines of the scrotum. Data analysis was performed using a linear mixed model (breed composition as fixed effect and year of evaluation as random effect). Spearman correlation coefficient was used to associate thermography and reproductive data. Girolando 3/4 Holstein bulls had higher (P ≤ 0.001) scrotal circumference and higher average body morphology and temperament, whereas 5/8 Holstein bulls had a higher (P < 0.001) percentage of major-type and total sperm defects. Girolando 3/4 Holstein bulls had scrotal temperatures 0.8 °C higher (P < 0.001) and 5/8 Holstein bulls had 9.8% and 10.6% higher differences on ?rectal ? scrotal area? and ?ocular area ? scrotal area? temperatures, respectively. Ocular area temperatures had negative correlations (P ≤ 0.1) with sperm motility and vigor, and positive correlations (P <̷... Mostrar Tudo |
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Palavras-Chave: |
Andrological examination; Crossbreeding. |
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Thesagro: |
Sêmen. |
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Thesaurus Nal: |
Dairy cattle; Girolando; Reproduction; Thermoregulation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03101naa a2200313 a 4500
001 2118383
005 2024-02-06
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jtherbio.2019.102407$2DOI
100 1 $aTEIXEIRA, V. A.
245 $aReproductive characteristics of bulls from two breed compositions and their correlations with infrared thermography.$h[electronic resource]
260 $c2019
520 $aThe objective was to evaluate reproductive characteristics of crossbred Girolando (Gyr x Holstein) bulls from two breed compositions and correlate these results with infrared thermography data. Evaluations were performed considering sperm motility, vigor and morphology; scrotal circumference; body morphology and temperament. Infrared thermography was performed to determine surface temperatures of ocular and scrotal areas. Thermoregulation capacity was assessed by differences between air and rectal temperatures, air and maximum temperatures in ocular and scrotal areas, and dorsal and ventral lines of the scrotum. Data analysis was performed using a linear mixed model (breed composition as fixed effect and year of evaluation as random effect). Spearman correlation coefficient was used to associate thermography and reproductive data. Girolando 3/4 Holstein bulls had higher (P ≤ 0.001) scrotal circumference and higher average body morphology and temperament, whereas 5/8 Holstein bulls had a higher (P < 0.001) percentage of major-type and total sperm defects. Girolando 3/4 Holstein bulls had scrotal temperatures 0.8 °C higher (P < 0.001) and 5/8 Holstein bulls had 9.8% and 10.6% higher differences on ?rectal ? scrotal area? and ?ocular area ? scrotal area? temperatures, respectively. Ocular area temperatures had negative correlations (P ≤ 0.1) with sperm motility and vigor, and positive correlations (P < 0.001) with minor-type and total sperm defects. Ventral line scrotal temperatures had positive correlations (P < 0.001) with minor-type and total sperm defects. Girolando 3/4 Holstein bulls were found to be superior to 5/8 Holstein bulls for reproductive characteristics. Under non-stressing climatic conditions, semen characteristics of Girolando bulls were more influenced by breed composition than by the capacity for scrotal thermoregulation. Correlations between semen quality and scrotal temperatures can aid in the identification of bulls for breeding, particularly when a large number of animals are in the tests.
650 $aDairy cattle
650 $aGirolando
650 $aReproduction
650 $aThermoregulation
650 $aSêmen
653 $aAndrological examination
653 $aCrossbreeding
700 1 $aCOELHO, S. G.
700 1 $aTOMICH, T. R.
700 1 $aRODRIGUES, J. P. P.
700 1 $aCAMPOS, M. M.
700 1 $aMACHADO, F. S.
700 1 $aSILVA, M. V. G. B.
700 1 $aMONTEIRO, G. A.
700 1 $aPEREIRA, L. G. R.
773 $tJournal of Thermal Biology$gv. 85, article 102407, 2019.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Tipo/Formato |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
11/12/1998 |
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Data da última atualização: |
13/07/2011 |
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Autoria: |
SPEHAR, C. R.; SOUZA, P. I. M.; URBEN FILHO, G. |
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Título: |
Soybean crop expansion into the tropics of Brazil. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
[s.l.: s.n., 1983]. |
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Páginas: |
13 p. |
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Idioma: |
Inglês |
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Conteúdo: |
The response of cultivated soybeans (Glycine max (L) Merrill) to changes in daylenght (photoperiod) has limited its expansion to regions located near the Equator, where there is a short range between the shortest and the longest day. When soybean cultivars are introduced in regions of lower latitudes than those of their adaptation, there will be a reduction in their biological cycle followed by reduction in plant height - a decisive factor in the fully-mechanized crop. The research work on soybean breeding in Brazil has made possible to obtain new cultivars highly adapted to low latitudes. Variety trials conducted in many locations have shown the potencial for the soybean crop in the Cerrados, mostly situated in low latitudes. In this paper we discuss the results of soybean trials conducted by Centro de Pesquisa Agropecuaria dos Cerrados-CPAC (Cerrados National Research Center) at Rondonopolis (16o30' South latitude) and Diamantino (14o30' South latitude) in Mato Grosso State and at Planaltina (15o57' south latitude) in the Federal District. The adaptability of the new soybean genotypes created for low latitudes is evidenced by good agronomic characteristics and high yield ability, wich is comparable or superior to that obtained in the traditional soybean cropping area. |
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Palavras-Chave: |
Brasil; Cultivation; Cultivo. |
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Thesagro: |
Cerrado; Glycine Max; Soja. |
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Thesaurus NAL: |
Brazil; soybeans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01842nam a2200241 a 4500
001 1544227
005 2011-07-13
008 1983 bl uuuu u00u1 u #d
100 1 $aSPEHAR, C. R.
245 $aSoybean crop expansion into the tropics of Brazil.
260 $a[s.l.: s.n.$c1983
300 $a13 p.
520 $aThe response of cultivated soybeans (Glycine max (L) Merrill) to changes in daylenght (photoperiod) has limited its expansion to regions located near the Equator, where there is a short range between the shortest and the longest day. When soybean cultivars are introduced in regions of lower latitudes than those of their adaptation, there will be a reduction in their biological cycle followed by reduction in plant height - a decisive factor in the fully-mechanized crop. The research work on soybean breeding in Brazil has made possible to obtain new cultivars highly adapted to low latitudes. Variety trials conducted in many locations have shown the potencial for the soybean crop in the Cerrados, mostly situated in low latitudes. In this paper we discuss the results of soybean trials conducted by Centro de Pesquisa Agropecuaria dos Cerrados-CPAC (Cerrados National Research Center) at Rondonopolis (16o30' South latitude) and Diamantino (14o30' South latitude) in Mato Grosso State and at Planaltina (15o57' south latitude) in the Federal District. The adaptability of the new soybean genotypes created for low latitudes is evidenced by good agronomic characteristics and high yield ability, wich is comparable or superior to that obtained in the traditional soybean cropping area.
650 $aBrazil
650 $asoybeans
650 $aCerrado
650 $aGlycine Max
650 $aSoja
653 $aBrasil
653 $aCultivation
653 $aCultivo
700 1 $aSOUZA, P. I. M.
700 1 $aURBEN FILHO, G.
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