The effects of a combination of a xylanase and multi enzyme non-starch polysaccharide product on growth performance of 12 to 22 kg nursery pigs

Abstract Text: Two experiments (EXP) were conducted to determine the efficacy of a combination of xylanase and multi enzyme non-starch polysaccharide product [Ronozyme^®WX (RWX) and VP (RVP), respectively, DSM Nutritional Products] to quantify the ME uplift potential. In EXP 1, pigs (N=969, 11.67 kg) were allotted to 3 dietary treatments (TRT) with 12 replicates and 27 or 28 pigs per pen in a randomized complete block design (RCBD). The EXP 1 TRT were; 1) Control (C), 3450 kcal/kg ME; 2) Negative Control (NC), 3329 kcal/kg ME; 3) NC + 227g/ton RVP + 150 g/ton RWX. In EXP 2, pigs (N=889, 13.33 kg) were allotted to 2 dietary TRT with 16 replicates and 27 or 28 pigs per pen in a RCBD. The EXP 2 TRT were; 1) C, 3450 kcal/kg ME; 2) C with 3382 kcal/kg ME + 227g/ton RVP + 150 g/ton RWX. All diets were mash Corn-SBM- 20% DDGS based. Data were analyzed using GLM procedure in SAS. In EXP 1, there were no effects of TRT on ADG. Pigs fed TRT 2 and 3 had increased ADFI compared with pigs fed TRT 1. Pigs fed TRT 1 had the greatest G:F, TRT 2 poorest, with TRT 3 intermediary. Basis the caloric efficiency of the TRT 1 (5630 kcal/kg gain), TRT 2 and 3 were calculated to contain 3270 and 3354 kcal/kg ME, respectively. The caloric uplift of TRT 3 vs. 2 was calculated to be 83 kcal/kg ME. In EXP 2, pigs fed TRT 2 had similar ADG, ADFI, and G:F compared with pigs fed TRT 1. Basis the caloric efficiency of TRT 1 (5611 kcal/kg gain), TRT 2 was calculated to contain 3501 kcal/kg ME which suggests a release of 120 kcal/kg ME. The combination of RWX and RVP was calculated to release 83 to 120 kcal/kg ME.

Table 1.
EXP 1, 20.5 d	Inititial BW, kg	ADG, g	ADFI, g	G:F	Final BW, kg
TRT 1	11.65	378	616b	0.61a	19.41
TRT 2	11.69	388	688a	0.58b	19.66
TRT 3	11.66	393	660a	0.60ab	19.72
SEM	0.12	7.76	11.95	0.008	0.228
P =	0.97	0.38	0.01	0.03	0.61
EXP 2, 21 d
TRT 1	13.40	574	933	0.61	25.45
TRT 2	13.26	580	929	0.62	25.44
SEM	0.12	7.65	10.30	0.004	0.160
P =	0.42	0.57	0.80	0.15	0.57

^1abcWithin a column, means without common superscript differ (P < 0.05).

Keywords: Enzyme, growth, pig