Table 3.

Body weight and average daily gain in pigs fed diets differing in fibre content and viscosity^*

Fibre content	MSBM			DDGS			SEM	P †
Viscosity	CEL	MCMC	HCMC	CEL	MCMC	HCMC		F	V	F × V	Linear	Quadratic
Initial BW, kg	26·68	26·16	26·40	26·33	26·78	26·92	1·73	0·46	0·08	0·47	NA	NA
Final BW, kg	56·44a	48·67b	49·29b	56·34a	48·29b	52·30b	2·45	0·38	0·0004	0·59	0·0006	0·01
ADG, kg	0·84a	0·61b	0·64b	0·83a	0·62b	0·70b	0·04	0·50	0·0002	0·68	0·0003	0·01

a,b Mean values within a row with unlike superscript letters were significantly different (P < 0.05).

^*Two basal diets: maize–soyabean meal (MSBM) or MSBM plus 30 % distillers dried grains with solubles (MSBM + DDGS) with three levels of viscosity (i.e. CEL, non-viscous cellulose; MCMC, medium-viscous carboxymethylcellulose; HCMC, high-viscous carboxymethylcellulose).

^†Factorial arrangement of treatments fibre (F) and viscosity (V) main effects with eighteen and twelve observations, respectively, and fibre and viscosity interaction (F × V) with six observations per treatment. Polynomial (linear and quadratic) contrasts were used to determine the effect of viscosity.