Multivariate relationship among body protein, fat, and macrominerals of male and female Saanen goats using canonical correlation analysis

Autor(es)

Castillo Vargas, Julian Andres ^[1] ; Almeida, Amelia Katiane ^[1] ; Harter, Carla Joice ^[1] ; Souza, Anaiane Pereira ^[1] ; Machado da Rocha Fernandes, Marcia Helena ^[1] ; de Resende, Kleber Tomas ^[1] ; Molina de Almeida Teixeira, Izabelle Auxiliadora ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Dept Zootecnia, Jaboticabal, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: REVISTA BRASILEIRA DE ZOOTECNIA-BRAZILIAN JOURNAL OF ANIMAL SCIENCE; v. 47, 2018.
• Citações Web of Science: 0

Resumo

The objective of this study was to investigate the multivariate relationship among body protein, fat, and macrominerals in Saanen goats of different sexes (castrated males, females, and intact males) using canonical correlation analysis. Individual records of 274 Saanen goats combined from 10 studies was used. Two sets of body constituents were established: the first one contained variables related to body protein or fat (canonical variate U) and the second contained variables related to body calcium, phosphorus, magnesium, sodium, or potassium (canonical variate V). Two canonical pairs were identified for each sex. However, irrespective of sex, first canonical pairs accounted for more than 87% of variance of the dependent variables, these only being used for the analysis. For canonical variate U 1, canonical weights for protein were greater than that for fat (in castrated males, protein = 0.62 and fat = 0.41; in females, protein = 0.96 and fat = 0.039; and in intact males, protein = 0.81 and fat = 0.20). For canonical variate V 1, in males, the highest canonical weights were for potassium and phosphorus, whereas the lowest were for calcium (in castrated males, potassium = 0.485 > phosphorus = 0.259 > magnesium = 0.206 > sodium = 0.129 > calcium = 0.081, and in intact males, potassium = 0.499 > phosphorus = 0.459 > sodium = 0.105 > magnesium = 0.024 > calcium = 0.001). On the other hand, in females, the highest canonical weights were for potassium and calcium, whereas the lowest was for magnesium (potassium = 0.539 > calcium = 0.201 > phosphorus = 0.178 > sodium = 0.088 > magnesium = 0.081). The current results may help to understand the role of sex on strength and nature of the association among body protein, fat, and macrominerals in growing Saanen goats. (AU)

• Processo FAPESP: 14/14734-9 - Desenvolvimento de modelos para predição das exigências nutricionais de cabritos em crescimento
• Beneficiário: Izabelle Auxiliadora Molina de Almeida Teixeira
• Modalidade de apoio: Auxílio à Pesquisa - Regular