Using multivariate factor analysis to characterize the unbranched fatty acid profile in bovine rumen fluid

Julián A. C. Vargas

doi:10.17533/udea.rccp.v32n3a02

Autores/as

Julián A. C. Vargas Universidad Estatal Paulista

DOI:

https://doi.org/10.17533/udea.rccp.v32n3a02

Palabras clave:

ácidos grasos no ramificados, análisis multivariado factorial, estadística multivariada, líquido ruminal, ganado, perfil lipídico, metabolismo de lípidos, rumiante

Resumen

Antecedentes: El análisis multivariado factorial (MFA) podría usarse para evaluar el complejo patrón de correlaciones entre ácidos grasos (FAs) en el rumen. Objetivo: Investigar el uso potencial del AMF para extraer información sobre el metabolismo de FAs no ramificados en fluido ruminal de bovinos. Métodos: Se construyó una base de datos conformada por 107 registros individuales de 26 FAs no ramificados, provenientes de dos estudios de incubación in vitro. El MFA se desarrolló usando el programa SPSS (Statistical Package for the Social Sciences). Resultados: El MFA extrajo cuatro factores latentes, cuantificando el 86.7% de la varianza total. El primer factor se correlacionó positivamente con FAs saturados (SFAs) de cadena corta (6:0), media (8:0, 10:0, 12:0, 14:0 y 16:0) y larga (17:0, 20:0 y 23:0) como también con FAs monoinsaturados (MUFAs) de 14 a 16 átomos de carbono (14:1-t5, 14:1-c9, 15:1-t10, 16:1-c9 y 16:1-t9). El segundo factor se correlacionó positivamente con 18:0 y con la mayoría de MUFAs cis y trans de 18 átomos de carbono (18:1-t9, 18:1-t11, 18:1-c6, 18:1-c9 y 18:1-c11). El tercer factor se correlacionó positivamente con 18:3-c9,c12,c15 y 18:2-t11,c15 y negativamente con 18:2-c9,t11. El cuarto factor se correlacionó positivamente con 18:1-t6 y 19:0; sin embargo, 19:0 también se correlacionó negativamente con el segundo factor. El 18:2-c9,c12 se correlacionó negativamente con los factores segundo y tercero. Conclusión: El análisis multivariado factorial (MFA) permitió reducir el gran número de ácidos grasos del fluido ruminal a unos pocos factores latentes con significado biológico.

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Biografía del autor/a

Julián A. C. Vargas, Universidad Estatal Paulista

Facultad de Ciencias Agrícolas y Veterinarias, Departamento de Ciencia Animal, Universidad Estadual Paulista “Júlio de Mesquita Filho”, Jaboticabal, São Paulo, Brasil.

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