Number of progeny number and accuracy of breeding value in productive traits of alpacas. A simulation study
The aim of this study was to evaluate by simulation the accuracy of the prediction of the breeding value according to the heritability of the trait and the number of progenies. Populations were simulated with six progenies for males (n = 15, 30, 50, 75, 100 and 150) and three for females (n = 1, 2 and 3) and characteristics with three heritability (h2 = 0.098, 0.22 and 0.56). The prediction of the breeding values was calculated by the method of the best unbiased linear predictor and the accuracy was calculated from the diagonal of the matrix of the mixed model equation. It was found that the higher heritability the accuracy was also higher in all scenarios. Regarding the number of progenies per male, accuracy values above 0.9 were obtained when the progeny was greater than 30. In the case of females, the highest accuracies were 0.56 for heritability with values of 0.71, 0.74 and 0.76 for 1, 2 and 3 offspring, respectively. The accuracy of the prediction of the breeding value in traits with heritability similar to those of importance in alpacas was greater when the number of progenies per male increased and when the heritability of the trait was greater.
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Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria
2021
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oai:ojs.csi.unmsm:article-190832021-08-26T04:52:48Z Number of progeny number and accuracy of breeding value in productive traits of alpacas. A simulation study Número de progenie y exactitud de la valoración genética en características productivas de alpacas. Un estudio de simulación Mamani M., Gerardo C. Gonzales C., Mario L. estimated breeding value accuracy heritability alpaca valor de cría exactitud heredabilidad alpaca The aim of this study was to evaluate by simulation the accuracy of the prediction of the breeding value according to the heritability of the trait and the number of progenies. Populations were simulated with six progenies for males (n = 15, 30, 50, 75, 100 and 150) and three for females (n = 1, 2 and 3) and characteristics with three heritability (h2 = 0.098, 0.22 and 0.56). The prediction of the breeding values was calculated by the method of the best unbiased linear predictor and the accuracy was calculated from the diagonal of the matrix of the mixed model equation. It was found that the higher heritability the accuracy was also higher in all scenarios. Regarding the number of progenies per male, accuracy values above 0.9 were obtained when the progeny was greater than 30. In the case of females, the highest accuracies were 0.56 for heritability with values of 0.71, 0.74 and 0.76 for 1, 2 and 3 offspring, respectively. The accuracy of the prediction of the breeding value in traits with heritability similar to those of importance in alpacas was greater when the number of progenies per male increased and when the heritability of the trait was greater. El objetivo del estudio fue evaluar mediante simulación las exactitudes de la predicción del valor de cría según la heredabilidad de la característica y el número de progenie. Se simularon poblaciones con seis números de progenie para machos (n = 15, 30, 50, 75, 100 y 150) y tres para hembras (n = 1, 2 y 3) y características con tres heredabilidades (h2 = 0.098, 0.22 y 0.56). La predicción de los valores de cría fue mediante el método del mejor predictor lineal insesgado y la exactitud fue calculada a partir de la diagonal de la matriz de la ecuación de los modelos mixtos. Se obtuvo que a mayor heredabilidad la exactitud fue también mayor en todos los escenarios. Respecto al número de hijos por reproductor, se obtuvo valores encima de 0.9 de exactitud cuando la progenie fue mayor a 30 hijos. En el caso de las hembras, las mayores exactitudes fueron para la heredabilidad de 0.56 con valores de 0.71, 0.74 y 0.76 para 1, 2 y 3 hijos, respectivamente. La exactitud de la predicción del valor de cría en características con heredabilidad similar a las de importancia en alpacas fue mayor cuando se incrementó el número de hijos por padre y cuando la heredabilidad de la característica fue mayor. Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria 2021-08-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article application/pdf https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/19083 10.15381/rivep.v32i4.19083 Revista de Investigaciones Veterinarias del Perú; Vol. 32 No. 4 (2021); e19083 Revista de Investigaciones Veterinarias del Perú; Vol. 32 Núm. 4 (2021); e19083 1682-3419 1609-9117 spa https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/19083/17100 Derechos de autor 2021 Gerardo C. Mamani M., Mario L. Gonzales C. http://creativecommons.org/licenses/by/4.0 |
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Perú |
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America del Sur |
| libraryname |
Biblioteca de la Facultad de Medicina Veterinaria |
| language |
spa |
| format |
Digital |
| author |
Mamani M., Gerardo C. Gonzales C., Mario L. |
| spellingShingle |
Mamani M., Gerardo C. Gonzales C., Mario L. Number of progeny number and accuracy of breeding value in productive traits of alpacas. A simulation study |
| author_facet |
Mamani M., Gerardo C. Gonzales C., Mario L. |
| author_sort |
Mamani M., Gerardo C. |
| title |
Number of progeny number and accuracy of breeding value in productive traits of alpacas. A simulation study |
| title_short |
Number of progeny number and accuracy of breeding value in productive traits of alpacas. A simulation study |
| title_full |
Number of progeny number and accuracy of breeding value in productive traits of alpacas. A simulation study |
| title_fullStr |
Number of progeny number and accuracy of breeding value in productive traits of alpacas. A simulation study |
| title_full_unstemmed |
Number of progeny number and accuracy of breeding value in productive traits of alpacas. A simulation study |
| title_sort |
number of progeny number and accuracy of breeding value in productive traits of alpacas. a simulation study |
| description |
The aim of this study was to evaluate by simulation the accuracy of the prediction of the breeding value according to the heritability of the trait and the number of progenies. Populations were simulated with six progenies for males (n = 15, 30, 50, 75, 100 and 150) and three for females (n = 1, 2 and 3) and characteristics with three heritability (h2 = 0.098, 0.22 and 0.56). The prediction of the breeding values was calculated by the method of the best unbiased linear predictor and the accuracy was calculated from the diagonal of the matrix of the mixed model equation. It was found that the higher heritability the accuracy was also higher in all scenarios. Regarding the number of progenies per male, accuracy values above 0.9 were obtained when the progeny was greater than 30. In the case of females, the highest accuracies were 0.56 for heritability with values of 0.71, 0.74 and 0.76 for 1, 2 and 3 offspring, respectively. The accuracy of the prediction of the breeding value in traits with heritability similar to those of importance in alpacas was greater when the number of progenies per male increased and when the heritability of the trait was greater. |
| publisher |
Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria |
| publishDate |
2021 |
| url |
https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/19083 |
| work_keys_str_mv |
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