Evaluation of Further Processing Methods for Soybean Meal in Diets for Nursery Pigs

Abstract Text:

A total of 296 mixed sex pigs (PIC 327 × 1050; 6.5 ± 1.4 kg BW and 21 d of age) were used in a 31-d experiment evaluating the effect of further processing methods for soybean meal on nursery pig growth performance. There were 11 replicate pens per treatment with 6 or 7 pigs per pen.  At weaning, pigs were allotted to pens by initial weight to 1 of 4 treatments in a completely randomized design. A 3-phase diet series was used with experimental diets fed during phase 1 (d 0 to 7) and phase 2 (d 7 to 20), and a common diet fed during phase 3 (d 20 to 30). Experimental treatments were: 1) Negative control (NC: 38.5% SBM and 25% dried whey), 2) Fermented soybean meal processing method 1 (FSBM1; Nutraferma, Sioux City, IA), 3) Fermented soybean meal processing method 2 (FSBM2; Nutraferma, Sioux City, IA), and 4) Enzymatically treated soybean meal (ETS; Hamlet Protein, Findlay, OH). Diet formulation was based on a common SID Lys level (1.35%). Diets 2, 3 and 4 contained 28.5% SBM and 25% dried whey and specialty soybean meal sources were added at 5% in both phase 1 and 2. Feed was pelleted in phases 1 and 2, while the phase 3 common diet was fed in meal form. From d 0 to 7, pigs fed FSBM2 had increased (P<0.05) ADG and d 7 BW compared to pigs fed ETS, and increased G:F (P<0.05) compared to all treatments. No other differences (P>0.10) were observed for growth or pig BW during phase 2, phase 3 or for the overall experiment. In summary, further processed soybean meal sources did not improve nursery pig growth compared to traditional soybean meal.

	NC	FSBM1	FBSM2	ETS	SEM	P <
d 0 to 7
ADG, g	76ab	74ab	96b	64a	11.7	0.07
ADFI, g	172	162	162	141	16.5	0.32
G:F	0.415a	0.457a	0.604b	0.445a	0.050	0.03
d 0 to 31
ADG, g	360	351	362	358	12.4	0.81
ADFI, g	541	526	530	525	16.7	0.76
G:F	0.664	0.665	0.680	0.678	0.013	0.46

Keywords: fermented soybean meal, nursery pig, protein sources