Short communication: Linear discriminant analysis and type of oil added to dairy goat diets.
Gas chromatography fatty acid (FA) analysis of 112 milk fat samples from dairy goats fed a basal diet with no added oil or the same diet with 1 of 3 vegetable oils added [high oleic sunflower oil (HOSFO), regular sunflower oil (RSFO), or linseed oil (LO)] was used to identify the type of diet consumed through linear discriminant analysis. Twenty variables (19 FA and 1 FA ratio) were selected as valid predictors out of 84 variables tested. The Mahalanobis squared distance was minimal between HOSFO and RSFO groups and maximal between control and LO groups. Cross-validation showed that only one observation from RSFO group was misclassified into the HOSFO group. We concluded that linear discriminant analysis is a useful method to classify milk fat samples from dairy goats according to the particular vegetable oil (of the 3 oils tested here) added to the basal diet.
Departamento de Producción Animal (Universidad de Córdoba), Ctra. Madrid-Cádiz, km 396, Campus de Rabanales, 14014 Córdoba, Spain.
A L
AL
Martínez Marín
P
P
Gómez-Cortés
A G
AG
Gómez Castro
M
M
Juárez
L
L
Pérez Alba
M
M
Pérez Hernández
M A
MA
de la Fuente
D000818:Animals; D004032:Diet / Q000662:veterinary*; D019587:Dietary Supplements; D016002:Discriminant Analysis; D005223:Fats / Q000032:analysis; D006041:Goats / Q000502:physiology*; D008043:Linseed Oil / Q000494:pharmacology*; D008892:Milk / Q000737:chemistry; D010938:Plant Oils / Q000494:pharmacology*; D000074242:Sunflower Oil
D005223:Fats; D010938:Plant Oils; D000074242:Sunflower Oil; D008043:Linseed Oil