Genetic and environmental factors that affect litter traits in two pig farms in Venezuela

Genetic and environmental factors that affect litter traits in two pig farms in Venezuela

Litter characteristics were evaluated: number of piglets born live (NV), weight at birth (PN), weight at 21 days (P21), number weaned (LD) and weight at weaning (PD), in two farms (A , B), which produce young breeding pigs. The least squares analyzes included in the model the breed [R: Large White (LW), Duroc (D), Hampshire (H), Landrace (L) in A; and LW, L and Line 24 (L24) in B]; month of birth (M: 1,… 12); year of birth (AN: A = 1990-92; B = 1985-92); calving number (PN: 1 to 5 in A and 1 to 8 in B); parent within race (P / R); as covariates: NV for PN and LD for PD and for P21. The adjusted means were: NV: 8.69 and 8.92; PN, 13.79 and 13.74 kg; P21, 56.68 and 54.99 kg; LD, 7.65 and 8.56; PD64.52 and 58.88 kg. LW and L excelled in most analyzes, excluding PN adjusted for NV, in which LW was the worst. The effect of M on NV and PN was not significant. The monthly averages of LD, P21 and PD varied greatly between farms, not finding a month or period of months longer. In A, AN affected NV, LD, PD and PD adjusted for LD; while in B, it affected PN adjusted for NV, and P21 and PD adjusted for LD. NP influenced all traits, intermediate calvings being the best. There was P / R influence on some characteristics. The estimated inheritance indices ranged from 0.01 to 0.16. The correlations between PN and NV, P21 and LD, and PD and LD were positive and significant. Regression values ​​(A and B) of 1.29 and 1.22 were obtained for PN on NV and 6.06 kg for PD on LD.

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Main Authors: de Venanzi , Jenny, Verde Sandoval, Omar
Format: Digital revista
Language:spa
Published: Asociacion Latinoamericana de Produccion Animal 1996
Online Access:https://ojs.alpa.uy/index.php/ojs_files/article/view/2935
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id oai:ojs.ojs.alpa.uy:article-2935
record_format ojs
institution ALPA
collection OJS
country Uruguay
countrycode UY
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databasecode rev-alpa
tag revista
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language spa
format Digital
author de Venanzi , Jenny
Verde Sandoval, Omar
spellingShingle de Venanzi , Jenny
Verde Sandoval, Omar
Genetic and environmental factors that affect litter traits in two pig farms in Venezuela
author_facet de Venanzi , Jenny
Verde Sandoval, Omar
author_sort de Venanzi , Jenny
title Genetic and environmental factors that affect litter traits in two pig farms in Venezuela
title_short Genetic and environmental factors that affect litter traits in two pig farms in Venezuela
title_full Genetic and environmental factors that affect litter traits in two pig farms in Venezuela
title_fullStr Genetic and environmental factors that affect litter traits in two pig farms in Venezuela
title_full_unstemmed Genetic and environmental factors that affect litter traits in two pig farms in Venezuela
title_sort genetic and environmental factors that affect litter traits in two pig farms in venezuela
description Litter characteristics were evaluated: number of piglets born live (NV), weight at birth (PN), weight at 21 days (P21), number weaned (LD) and weight at weaning (PD), in two farms (A , B), which produce young breeding pigs. The least squares analyzes included in the model the breed [R: Large White (LW), Duroc (D), Hampshire (H), Landrace (L) in A; and LW, L and Line 24 (L24) in B]; month of birth (M: 1,… 12); year of birth (AN: A = 1990-92; B = 1985-92); calving number (PN: 1 to 5 in A and 1 to 8 in B); parent within race (P / R); as covariates: NV for PN and LD for PD and for P21. The adjusted means were: NV: 8.69 and 8.92; PN, 13.79 and 13.74 kg; P21, 56.68 and 54.99 kg; LD, 7.65 and 8.56; PD64.52 and 58.88 kg. LW and L excelled in most analyzes, excluding PN adjusted for NV, in which LW was the worst. The effect of M on NV and PN was not significant. The monthly averages of LD, P21 and PD varied greatly between farms, not finding a month or period of months longer. In A, AN affected NV, LD, PD and PD adjusted for LD; while in B, it affected PN adjusted for NV, and P21 and PD adjusted for LD. NP influenced all traits, intermediate calvings being the best. There was P / R influence on some characteristics. The estimated inheritance indices ranged from 0.01 to 0.16. The correlations between PN and NV, P21 and LD, and PD and LD were positive and significant. Regression values ​​(A and B) of 1.29 and 1.22 were obtained for PN on NV and 6.06 kg for PD on LD.
publisher Asociacion Latinoamericana de Produccion Animal
publishDate 1996
url https://ojs.alpa.uy/index.php/ojs_files/article/view/2935
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spelling oai:ojs.ojs.alpa.uy:article-29352021-12-16T22:56:30Z Genetic and environmental factors that affect litter traits in two pig farms in Venezuela Factores genéticos y ambientales que afectan caracteres de la camada en dos granjas porcinas en Venezuela Fatores genéticos e ambientais que afetam as características da ninhada em duas fazendas de suínos na Venezuela de Venanzi , Jenny Verde Sandoval, Omar Pigs litter characters Porcinos caracteres de camada características da ninhada leitões Litter characteristics were evaluated: number of piglets born live (NV), weight at birth (PN), weight at 21 days (P21), number weaned (LD) and weight at weaning (PD), in two farms (A , B), which produce young breeding pigs. The least squares analyzes included in the model the breed [R: Large White (LW), Duroc (D), Hampshire (H), Landrace (L) in A; and LW, L and Line 24 (L24) in B]; month of birth (M: 1,… 12); year of birth (AN: A = 1990-92; B = 1985-92); calving number (PN: 1 to 5 in A and 1 to 8 in B); parent within race (P / R); as covariates: NV for PN and LD for PD and for P21. The adjusted means were: NV: 8.69 and 8.92; PN, 13.79 and 13.74 kg; P21, 56.68 and 54.99 kg; LD, 7.65 and 8.56; PD64.52 and 58.88 kg. LW and L excelled in most analyzes, excluding PN adjusted for NV, in which LW was the worst. The effect of M on NV and PN was not significant. The monthly averages of LD, P21 and PD varied greatly between farms, not finding a month or period of months longer. In A, AN affected NV, LD, PD and PD adjusted for LD; while in B, it affected PN adjusted for NV, and P21 and PD adjusted for LD. NP influenced all traits, intermediate calvings being the best. There was P / R influence on some characteristics. The estimated inheritance indices ranged from 0.01 to 0.16. The correlations between PN and NV, P21 and LD, and PD and LD were positive and significant. Regression values ​​(A and B) of 1.29 and 1.22 were obtained for PN on NV and 6.06 kg for PD on LD. Se evaluaron las características de camada: número de lechones nacidos vivos (NV), peso al nacer (PN), peso a los 21 días (P21), número destetados (LD) y peso al destete (PD), en dos granjas (A, B), que producen jóvenes reproductores porcinos. Los análisis por cuadrados mínimos incluyeron en el modelo la raza [R: Large White (LW), Duroc (D), Hampshire (H), Landrace (L) en A; y LW, L y Línea 24 (L24) en B]; mes de nacimiento (M: 1, … 12); año de nacimiento (AN:  A=1990-92; B=1985-92); número de parto (NP: 1 a 5 en A y 1 a 8 en B); padre dentro de la raza (P/R); como covariables: NV para PN y LD para PD y para P21. Los promedios ajustados fueron: NV: 8.69 y 8.92; PN, 13.79 y 13.74 kg; P21, 56.68 y 54.99 kg; LD, 7.65 y 8.56; PD64.52 y 58.88 kg. LW y L sobresalieron en la mayoría de los análisis, excluyendo PN ajustado para NV, en el cual LW fue la peor. El efecto de M sobre NV y PN no fue significativo. Los promedios mensuales de LD, P21 y PD variaron mucho entre granjas, no encontrándose un mes o lapso de meses superior. En A, AN afectó NV, LD, PD y PD ajustado para LD; mientras en B, afectó PN ajustado para NV, y P21 y PD ajustados para LD. El NP influenció todos los caracteres, los partos intermedios siendo los mejores. Hubo influencia de P/R en algunas características. Los índices de herencia estimados oscilaron entre 0.01 y 0.16. Las correlaciones entre PN y NV, P21 y LD, y PD y LD fueron positivas y significativas. Se obtuvo valores de regresión (A y B) de 1,29 y 1.22 para PN sobre NV y 6.06 kg para PD sobre LD. Foram avaliadas as características da ninhada: número de leitões nascidos vivos (NV), peso ao nascer (PN), peso aos 21 dias (P21), número desmamado (LD) e peso ao desmame (PD), em duas granjas (A, B), que produzem porcos reprodutores jovens. As análises de mínimos quadrados incluíram no modelo a raça [R: Large White (LW), Duroc (D), Hampshire (H), Landrace (L) em A; e LW, L e Linha 24 (L24) em B]; mês de nascimento (M: 1,… 12); ano de nascimento (AN: A = 1990-92; B = 1985-92); número de partos (PN: 1 a 5 em A e 1 a 8 em B); pai dentro da raça (P / R); como covariáveis: NV para PN e LD para PD e para P21. As médias ajustadas foram: NV: 8,69 e 8,92; PN, 13,79 e 13,74 kg; P21, 56,68 e 54,99 kg; LD, 7,65 e 8,56; PD64,52 e 58,88 kg. LW e L se destacaram na maioria das análises, excluindo PN ajustado para NV, em que LW foi o pior. O efeito de M em NV e PN não foi significativo. As médias mensais de LD, P21 e PD variaram muito entre as fazendas, não encontrando um mês ou período de meses a mais. Em A, AN afetou NV, LD, PD e PD ajustado para LD; enquanto em B, afetou PN ajustado para NV, e P21 e PD ajustado para LD. NP influenciou todas as características, sendo os partos intermediários os melhores. Houve influência P / R em algumas características. Os índices de herança estimados variaram de 0,01 a 0,16. As correlações entre PN e NV, P21 e LD e PD e LD foram positivas e significativas. Valores de regressão (A e B) de 1,29 e 1,22 foram obtidos para PN em NV e 6,06 kg para PD em LD. Asociacion Latinoamericana de Produccion Animal 1996-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Articulo cientifico original Texto Texto application/pdf https://ojs.alpa.uy/index.php/ojs_files/article/view/2935 Latin American Archives of Animal Production; Vol. 4 No. 1 (1996); 55-71 Archivos Latinoamericanos de Producción Animal; Vol. 4 Núm. 1 (1996); 55-71 2075-8359 1022-1301 spa https://ojs.alpa.uy/index.php/ojs_files/article/view/2935/1525 Copyright (c) 1996 Jenny de Venanzi , Omar Verde Sandoval https://creativecommons.org/licenses/by-nc-sa/4.0

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