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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
24/07/2019 |
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Data da última atualização: |
01/10/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMPOS, G. S.; REIMANN, F. A.; SCHIMDT, P. I.; CARDOSO, L. L.; SOLLERO, B. P.; BRACCINI, J.; YOKOO, M. J. I.; BOLIGON, A. A.; CARDOSO, F. F. |
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Afiliação: |
G. S. Campos, UFPEL; F. A. Reimann, UFPEL; P. I. Schimdt, UFPEL; L. L. Cardoso; BRUNA PENA SOLLERO, CPPSUL; J. Braccini, UFRGS; MARCOS JUN ITI YOKOO, CPPSUL; A. A. Boligon, UFPEL; FERNANDO FLORES CARDOSO, CPPSUL. |
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Título: |
Threshold and linear models for genetic evaluation of visual scores in Hereford and Braford cattle. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Animal Production Science, v. 59, n. 4, p. 619-627, 2019. |
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DOI: |
doi.org/10.1071/AN17436 |
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Idioma: |
Inglês |
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Conteúdo: |
Data from 127 539 Hereford and Braford cattle were used to compare estimates of genetic parameters for navel, conformation, precocity, muscling and size visual scores at yearling, using linear and threshold animal models. In a second step, these models were cross-validated using a multinomial logistic regression in order to quantify the association between phenotype and genetic merit for each trait. For navel score, higher heritability was obtained with the threshold model (0.42 ± 0.02) in relation to the linear model (0.22 ± 0.02). However, similar heritability was estimated in both models for conformation, precocity, muscling and size, with values of 0.18 ± 0.01, 0.19 ± 0.01, 0.19 ± 0.01 and 0.26 ± 0.01, respectively, using linear model, and of 0.19 ± 0.01, 0.19 ± 0.01, 0.20 ± 0.01, and 0.29 ± 0.01, respectively, using threshold model. For navel score, Spearman correlations between sires? breeding values predicted using linear and threshold models ranged from 0.60 (1% of the best sires are selected) to 0.96 (all sires are selected). For conformation, precocity, muscling and size scores, low changes in sires? rank are expected using these models (Spearman correlations >0.86), regardless of the proportion of sires selected. Except for navel with the linear model, the direction of the associations between phenotype and genetic merit were in accordance with its expectation, as there were increases in the phenotype per unit of change in the breeding value. Thus, the threshold model would be recommended to perform genetic evaluation of navel score in this population. However, linear and threshold models showed similar predictive ability for conformation, precocity, muscling and size scores. MenosData from 127 539 Hereford and Braford cattle were used to compare estimates of genetic parameters for navel, conformation, precocity, muscling and size visual scores at yearling, using linear and threshold animal models. In a second step, these models were cross-validated using a multinomial logistic regression in order to quantify the association between phenotype and genetic merit for each trait. For navel score, higher heritability was obtained with the threshold model (0.42 ± 0.02) in relation to the linear model (0.22 ± 0.02). However, similar heritability was estimated in both models for conformation, precocity, muscling and size, with values of 0.18 ± 0.01, 0.19 ± 0.01, 0.19 ± 0.01 and 0.26 ± 0.01, respectively, using linear model, and of 0.19 ± 0.01, 0.19 ± 0.01, 0.20 ± 0.01, and 0.29 ± 0.01, respectively, using threshold model. For navel score, Spearman correlations between sires? breeding values predicted using linear and threshold models ranged from 0.60 (1% of the best sires are selected) to 0.96 (all sires are selected). For conformation, precocity, muscling and size scores, low changes in sires? rank are expected using these models (Spearman correlations >0.86), regardless of the proportion of sires selected. Except for navel with the linear model, the direction of the associations between phenotype and genetic merit were in accordance with its expectation, as there were increases in the phenotype per unit of change in the breeding value. Thus, the thres... Mostrar Tudo |
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Palavras-Chave: |
Inferência bayesiana. |
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Thesagro: |
Criação; Gado de Corte; Melhoramento Genético Animal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02568naa a2200277 a 4500
001 2110830
005 2019-10-01
008 2019 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1071/AN17436$2DOI
100 1 $aCAMPOS, G. S.
245 $aThreshold and linear models for genetic evaluation of visual scores in Hereford and Braford cattle.$h[electronic resource]
260 $c2019
520 $aData from 127 539 Hereford and Braford cattle were used to compare estimates of genetic parameters for navel, conformation, precocity, muscling and size visual scores at yearling, using linear and threshold animal models. In a second step, these models were cross-validated using a multinomial logistic regression in order to quantify the association between phenotype and genetic merit for each trait. For navel score, higher heritability was obtained with the threshold model (0.42 ± 0.02) in relation to the linear model (0.22 ± 0.02). However, similar heritability was estimated in both models for conformation, precocity, muscling and size, with values of 0.18 ± 0.01, 0.19 ± 0.01, 0.19 ± 0.01 and 0.26 ± 0.01, respectively, using linear model, and of 0.19 ± 0.01, 0.19 ± 0.01, 0.20 ± 0.01, and 0.29 ± 0.01, respectively, using threshold model. For navel score, Spearman correlations between sires? breeding values predicted using linear and threshold models ranged from 0.60 (1% of the best sires are selected) to 0.96 (all sires are selected). For conformation, precocity, muscling and size scores, low changes in sires? rank are expected using these models (Spearman correlations >0.86), regardless of the proportion of sires selected. Except for navel with the linear model, the direction of the associations between phenotype and genetic merit were in accordance with its expectation, as there were increases in the phenotype per unit of change in the breeding value. Thus, the threshold model would be recommended to perform genetic evaluation of navel score in this population. However, linear and threshold models showed similar predictive ability for conformation, precocity, muscling and size scores.
650 $aCriação
650 $aGado de Corte
650 $aMelhoramento Genético Animal
653 $aInferência bayesiana
700 1 $aREIMANN, F. A.
700 1 $aSCHIMDT, P. I.
700 1 $aCARDOSO, L. L.
700 1 $aSOLLERO, B. P.
700 1 $aBRACCINI, J.
700 1 $aYOKOO, M. J. I.
700 1 $aBOLIGON, A. A.
700 1 $aCARDOSO, F. F.
773 $tAnimal Production Science$gv. 59, n. 4, p. 619-627, 2019.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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Tipo/Formato |
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Status |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
29/02/2016 |
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Data da última atualização: |
25/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CRUZ, L. P.; SÁ, L. F. R. de; SANTOS, L. A.; GRAVINA, G. A.; CARVALHO, A. O.; FERNANDES, K. V. S.; FREIRE FILHO, F. R.; GOMES, V. M.; OLIVEIRA, A. E. A. |
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Afiliação: |
Luana P. Cruz, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Leonardo F. R. de Sá, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Layrana A. Santos, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Geraldo A. Gravina, Universidade Estadual do Norte Fluminense Darcy Ribeiro; André O. Carvalho, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Kátia Valevski S. Fernandes, Universidade Estadual do Norte Fluminense Darcy Ribeiro; FRANCISCO RODRIGUES FREIRE FILHO, CPATU; Valdirene M. Gomes, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Antonia Elenir A. Oliveira, Universidade Estadual do Norte Fluminense Darcy Ribeiro. |
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Título: |
Evaluation of resistance in different cowpea cultivars to Callosobruchus maculatus infestation. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Pest Science, v. 89, n. 1, p. 117-128, Mar. 2016. |
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DOI: |
10.1007/s10340-015-0657-z |
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Idioma: |
Inglês |
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Conteúdo: |
Cowpea [Vigna unguiculata (L.) Walp] seeds are an important source of nutrients for human and animal. However, part of the seed production is lost due to insect attacks, mainly by the weevil Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae), a major pest of stored cowpeas. An efficient method for controlling seed infestation is the use of insect-resistant cultivars. In this work, we studied the resistance of different cowpea Brazilian cultivars (BRS) to infestation and damage by C. maculatus. Our results showed that some cultivars interfered in female oviposition. The time necessary for the larvae to perforate the seed coat of some cultivars increased up to 40 %. No relationship between seed coat thickness, textures, or pigmentation and the larval ability of crossing seed coats was observed. Larval survival was also affected by cowpea cultivars. In BRS Xiquexique, only 30 % of the larvae survived at 20 days after oviposition. The weight of larvae developed into BRS Pajeu, and BRS Xiquexique cultivars decreased about 50 %. Cysteine protease, α-glucosidase, and α-amylase activities decreased in larvae developed in some cultivars, mainly in Pajeu, Guariba, Tucumaque, and Xiquexique. Adult emergence also decreased in Xiquexique, Pajeu, Tucumaque, and Paraguaçu BRS cultivars. A direct relationship between higher infestation and lower seed germination and seedling growth potential was observed. From these data, we would recommend the use of Pajeu, Guariba, Tucumaque, and Xiquexique BRS cultivars as a way to reduce cowpea infestation, and suggest that their resistance mechanism is related to the diminishment of larval digestive abilities. MenosCowpea [Vigna unguiculata (L.) Walp] seeds are an important source of nutrients for human and animal. However, part of the seed production is lost due to insect attacks, mainly by the weevil Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae), a major pest of stored cowpeas. An efficient method for controlling seed infestation is the use of insect-resistant cultivars. In this work, we studied the resistance of different cowpea Brazilian cultivars (BRS) to infestation and damage by C. maculatus. Our results showed that some cultivars interfered in female oviposition. The time necessary for the larvae to perforate the seed coat of some cultivars increased up to 40 %. No relationship between seed coat thickness, textures, or pigmentation and the larval ability of crossing seed coats was observed. Larval survival was also affected by cowpea cultivars. In BRS Xiquexique, only 30 % of the larvae survived at 20 days after oviposition. The weight of larvae developed into BRS Pajeu, and BRS Xiquexique cultivars decreased about 50 %. Cysteine protease, α-glucosidase, and α-amylase activities decreased in larvae developed in some cultivars, mainly in Pajeu, Guariba, Tucumaque, and Xiquexique. Adult emergence also decreased in Xiquexique, Pajeu, Tucumaque, and Paraguaçu BRS cultivars. A direct relationship between higher infestation and lower seed germination and seedling growth potential was observed. From these data, we would recommend the use of Pajeu, Guariba, Tucuma... Mostrar Tudo |
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Palavras-Chave: |
Defesa. |
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Thesagro: |
Feijão; Semente. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02458naa a2200265 a 4500
001 2038909
005 2022-05-25
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1007/s10340-015-0657-z$2DOI
100 1 $aCRUZ, L. P.
245 $aEvaluation of resistance in different cowpea cultivars to Callosobruchus maculatus infestation.$h[electronic resource]
260 $c2016
520 $aCowpea [Vigna unguiculata (L.) Walp] seeds are an important source of nutrients for human and animal. However, part of the seed production is lost due to insect attacks, mainly by the weevil Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae), a major pest of stored cowpeas. An efficient method for controlling seed infestation is the use of insect-resistant cultivars. In this work, we studied the resistance of different cowpea Brazilian cultivars (BRS) to infestation and damage by C. maculatus. Our results showed that some cultivars interfered in female oviposition. The time necessary for the larvae to perforate the seed coat of some cultivars increased up to 40 %. No relationship between seed coat thickness, textures, or pigmentation and the larval ability of crossing seed coats was observed. Larval survival was also affected by cowpea cultivars. In BRS Xiquexique, only 30 % of the larvae survived at 20 days after oviposition. The weight of larvae developed into BRS Pajeu, and BRS Xiquexique cultivars decreased about 50 %. Cysteine protease, α-glucosidase, and α-amylase activities decreased in larvae developed in some cultivars, mainly in Pajeu, Guariba, Tucumaque, and Xiquexique. Adult emergence also decreased in Xiquexique, Pajeu, Tucumaque, and Paraguaçu BRS cultivars. A direct relationship between higher infestation and lower seed germination and seedling growth potential was observed. From these data, we would recommend the use of Pajeu, Guariba, Tucumaque, and Xiquexique BRS cultivars as a way to reduce cowpea infestation, and suggest that their resistance mechanism is related to the diminishment of larval digestive abilities.
650 $aFeijão
650 $aSemente
653 $aDefesa
700 1 $aSÁ, L. F. R. de
700 1 $aSANTOS, L. A.
700 1 $aGRAVINA, G. A.
700 1 $aCARVALHO, A. O.
700 1 $aFERNANDES, K. V. S.
700 1 $aFREIRE FILHO, F. R.
700 1 $aGOMES, V. M.
700 1 $aOLIVEIRA, A. E. A.
773 $tJournal of Pest Science$gv. 89, n. 1, p. 117-128, Mar. 2016.
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