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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/03/2003 |
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Data da última atualização: |
18/03/2003 |
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Autoria: |
MAGNABOSCO, C. D. U.; OJALA, M.; LOS REYES, A. de; SAINZ, R. D.; FERNANDES, A.; FAMULA, T. R. |
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Título: |
Estimates of environmental effects and genetic parameters for body measurements and weight in Brahaman cattle raised in Mexico. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, Berlin, v. 119, p. 221-228, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
A Derivative Free Restricted Maximum Likelihood (DFREML) algorithm was used with single trait and two animal models to estimate the variance and covariance components and thus, heritabilities and phenotypic, genetic and environmental correlations among nine different body measurements and weights of Brahman cattle raised in Mexico. The following measurements were considered: hip width, pin width, hip-pin width, anterior height, posterior height, body lenght, thorax perimeter, scrotal, circumference and weight. The analysis was based on a total of 1018 animals, born between 1992 and 1995, from 17 herds in the Mexico States of Chiapas, San Luis Potosi, Tabasco, Tamaulipas and Veracruz. The model included the following fixed effects: herd, year-season of birth, sex, age of the animal and feed management. The only random effect was the direct additive genetic contribuition of each animal. All fixed effects in the model were significant for all traits (p<0.05). Estimated heritabilities for the traits were: hip width 0.57, pin width 0.32, hip-pin width 0.41, anterior height 0.56, posterior height 0.54, body lenght 0.32, thorax perimeter 0.49, scrotal circumference 0.02 and weigth 0.66. The magnitude of the heritabilities was medium to high, with the exception of scrotal circumference. The genetic correlations among all body measurements were consistently positive and high, ranging from 0.64 to 1.00. Although other measures showed higher genetic correlations with weight, thorax perimeter combines a high value (0.70) with ease and repeatability, making it a useful field measurement to estimate body weight when scales are not available. MenosA Derivative Free Restricted Maximum Likelihood (DFREML) algorithm was used with single trait and two animal models to estimate the variance and covariance components and thus, heritabilities and phenotypic, genetic and environmental correlations among nine different body measurements and weights of Brahman cattle raised in Mexico. The following measurements were considered: hip width, pin width, hip-pin width, anterior height, posterior height, body lenght, thorax perimeter, scrotal, circumference and weight. The analysis was based on a total of 1018 animals, born between 1992 and 1995, from 17 herds in the Mexico States of Chiapas, San Luis Potosi, Tabasco, Tamaulipas and Veracruz. The model included the following fixed effects: herd, year-season of birth, sex, age of the animal and feed management. The only random effect was the direct additive genetic contribuition of each animal. All fixed effects in the model were significant for all traits (p<0.05). Estimated heritabilities for the traits were: hip width 0.57, pin width 0.32, hip-pin width 0.41, anterior height 0.56, posterior height 0.54, body lenght 0.32, thorax perimeter 0.49, scrotal circumference 0.02 and weigth 0.66. The magnitude of the heritabilities was medium to high, with the exception of scrotal circumference. The genetic correlations among all body measurements were consistently positive and high, ranging from 0.64 to 1.00. Although other measures showed higher genetic correlations with weight, thorax per... Mostrar Tudo |
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Thesagro: |
Bovino; Cerrado; Gado; Genética. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02331naa a2200229 a 4500
001 1566513
005 2003-03-18
008 2002 bl --- 0-- u #d
100 1 $aMAGNABOSCO, C. D. U.
245 $aEstimates of environmental effects and genetic parameters for body measurements and weight in Brahaman cattle raised in Mexico.
260 $c2002
520 $aA Derivative Free Restricted Maximum Likelihood (DFREML) algorithm was used with single trait and two animal models to estimate the variance and covariance components and thus, heritabilities and phenotypic, genetic and environmental correlations among nine different body measurements and weights of Brahman cattle raised in Mexico. The following measurements were considered: hip width, pin width, hip-pin width, anterior height, posterior height, body lenght, thorax perimeter, scrotal, circumference and weight. The analysis was based on a total of 1018 animals, born between 1992 and 1995, from 17 herds in the Mexico States of Chiapas, San Luis Potosi, Tabasco, Tamaulipas and Veracruz. The model included the following fixed effects: herd, year-season of birth, sex, age of the animal and feed management. The only random effect was the direct additive genetic contribuition of each animal. All fixed effects in the model were significant for all traits (p<0.05). Estimated heritabilities for the traits were: hip width 0.57, pin width 0.32, hip-pin width 0.41, anterior height 0.56, posterior height 0.54, body lenght 0.32, thorax perimeter 0.49, scrotal circumference 0.02 and weigth 0.66. The magnitude of the heritabilities was medium to high, with the exception of scrotal circumference. The genetic correlations among all body measurements were consistently positive and high, ranging from 0.64 to 1.00. Although other measures showed higher genetic correlations with weight, thorax perimeter combines a high value (0.70) with ease and repeatability, making it a useful field measurement to estimate body weight when scales are not available.
650 $aBovino
650 $aCerrado
650 $aGado
650 $aGenética
700 1 $aOJALA, M.
700 1 $aLOS REYES, A. de
700 1 $aSAINZ, R. D.
700 1 $aFERNANDES, A.
700 1 $aFAMULA, T. R.
773 $tJournal of Animal Breeding and Genetics, Berlin$gv. 119, p. 221-228, 2002.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
07/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
GUIMARÃES-CESTARO, L.; SERRÃO, J. E.; MESSAGE, D.; MARTINS, M. F.; TEIXEIRA, É. W. |
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Afiliação: |
Lubiane Guimarães-Cestaro, UFV; José Eduardo Serrão, UFV; Dejair Message, UFERSA; MARTA FONSECA MARTINS, CNPGL; Érica Weinstein Teixeira, APTA-SAA. |
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Título: |
Simultaneous detection of Nosema spp., Ascosphaera apis and Paenibacillus larvae in honey bee products. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Hymenoptera Research, n. 49, p. 43-50, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract Honey bees are responsible for pollinating many native and cultivated plant species. These insects can be affected by many pathogens, including fungi and bacteria, both of which can form spores that are easily dispersed within the colony by means of the stored products, among other routes. The objective of this study was to develop a method to detect spores of the honey bee pathogens Nosema apis, Nosema ceranae, Ascosphaera apis and Paenibacillus larvae in samples of honey, bee pollen and royal jelly. The method was standardized for each product individually, and then analyzed by monoplex and multiplex PCR, which showed the same detection thresholds: 1.25 spores/mL of honey for N. ceranae; 7.5 spores/mL of honey for A. apis; and 0.4 spore/mL of honey for P. larvae, respectively. The standardized technique was effective and rapid for the detection of these pathogens in bee products and can be used for the establishment of official methods of sanitary control of bee products, considering the growing national and international trade of these products and the movement or migration of colonies between regions. |
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Palavras-Chave: |
Bee pathogens; Detection of spores. |
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Thesagro: |
Apis Mellifera. |
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Thesaurus NAL: |
honey; pollen; royal jelly. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/154930/1/Cnpgl-2016-JHymenopRes-Simultaneous.pdf
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Marc: |
LEADER 01838naa a2200241 a 4500
001 2062982
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aGUIMARÃES-CESTARO, L.
245 $aSimultaneous detection of Nosema spp., Ascosphaera apis and Paenibacillus larvae in honey bee products.$h[electronic resource]
260 $c2016
520 $aAbstract Honey bees are responsible for pollinating many native and cultivated plant species. These insects can be affected by many pathogens, including fungi and bacteria, both of which can form spores that are easily dispersed within the colony by means of the stored products, among other routes. The objective of this study was to develop a method to detect spores of the honey bee pathogens Nosema apis, Nosema ceranae, Ascosphaera apis and Paenibacillus larvae in samples of honey, bee pollen and royal jelly. The method was standardized for each product individually, and then analyzed by monoplex and multiplex PCR, which showed the same detection thresholds: 1.25 spores/mL of honey for N. ceranae; 7.5 spores/mL of honey for A. apis; and 0.4 spore/mL of honey for P. larvae, respectively. The standardized technique was effective and rapid for the detection of these pathogens in bee products and can be used for the establishment of official methods of sanitary control of bee products, considering the growing national and international trade of these products and the movement or migration of colonies between regions.
650 $ahoney
650 $apollen
650 $aroyal jelly
650 $aApis Mellifera
653 $aBee pathogens
653 $aDetection of spores
700 1 $aSERRÃO, J. E.
700 1 $aMESSAGE, D.
700 1 $aMARTINS, M. F.
700 1 $aTEIXEIRA, É. W.
773 $tJournal of Hymenoptera Research$gn. 49, p. 43-50, 2016.
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Embrapa Gado de Leite (CNPGL) |
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