Statistical analysis
An analysis of variance (ANOVA) of the data was conducted using the GLM procedure of SPSS 19.0 statistical software package (SPSS, Inc., Chicago, IL, USA). During lactation, the individual sow or litter of piglets was used as the experimental unit; after weaning, the pen of piglets was the experimental unit. The average piglet weight of each litter or pen was used in the analysis. Duncan’s test was conducted to determine the differences among treatments. Results are expressed as means and standard errors of the mean (SEM). A value of P < 0.05 was used for determination of significant differences. Tendencies were reported when P < 0.10.
Statistical analysisAn analysis of variance (ANOVA) of the data was conducted using the GLM procedure of SPSS 19.0 statistical software package (SPSS, Inc., Chicago, IL, USA). During lactation, the individual sow or litter of piglets was used as the experimental unit; after weaning, the pen of piglets was the experimental unit. The average piglet weight of each litter or pen was used in the analysis. Duncan’s test was conducted to determine the differences among treatments. Results are expressed as means and standard errors of the mean (SEM). A value of P < 0.05 was used for determination of significant differences. Tendencies were reported when P < 0.10.
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