Four conditions were assessed in sequence: (i) SRT1.5, fed daily with un-gelatinized PPW at a SRT of 1.5 d for 8 d; (ii) SRT2, fed daily with ungelatinized PPW at a SRT of 2 d for 10 d; (iii) SRT1.5G, fed daily with gelatinized PPW at a SRT of 1.5 d for 14 d; (iv) SRT1G, fed twice a day with gelatinized PPW at a SRT of 1 d for 8 d.