Effects of Feeding Increasing Levels of HP 300 on Nursery Pig Performance

Weaned pigs (n=1,215; 337×1050 PIC, Hendersonville, TN; initially 5.1kg) were used in a 43-d growth trial to determine the effects of feeding increasing levels of enzymatically treated soybean meal (HP 300) on nursery pig performance. Pigs were weaned at approximately 16 to 19 d of age, weighed and allotted by BW to 1 of 5 dietary treatments in a randomized complete block design and placed in pens with 27 pigs/pen and 9 pens/treatment. Diets were fed in two phases (d 0 to 7 and d 7 to 22), followed by a common phase 3 diet fed from d 22 to 43. Treatments included a control diet that was corn-SBM-based with 7.5% and 5.6% fish meal in phase 1 and 2, respectively; 3 diets formulated to contain increasing HP 300 (Hamlet Protein, Findlay, OH) ranging from 6.7 to 20% in phase 1, and 5 to 15% in phase 2 with equal increases in HP 300 and reductions in fish meal and soybean meal between treatments. A fifth treatment that had the same amount of SBM as the fish meal-control diet, but with HP 300 replacing fish meal on an equal SID Lys basis was included. From d 0 to 22 (treatment period), ADG, ADFI, and d 22 BW decreased (linear, P<0.05) as HP 300 increased. Overall (d 0 to 43), pigs fed increasing HP 300 from d 0 to 22 had a marginally significant reduction in ADFI (linear, P=0.071) and decreased final BW (linear, P=0.045). However, no differences were observed for growth performance among pigs fed the fish meal control diet and pigs fed the diet with HP 300 replacing only fish meal. In conclusion, increasing HP 300 in nursery pig diets resulted in poorer feed intake and final BW.

	Control	HP 300 Low	HP 300 Medium	HP 300 High	HP 300 replacing fish meal	SEM	HP 300 Linear, P <
BW d 22, kg	10.1	9.8	9.6	9.6	9.8	0.18	0.008
BW d 43, kg	21.0	20.6	20.4	20.3	20.5	0.29	0.045
d 0-22 ADG, g	219	202	200	199	207	6.7	0.020
ADFI, g	336	328	317	314	329	5.5	0.001
G:F	0.643	0.609	0.622	0.625	0.624	0.0126	0.406
d 0-43 ADG, g	361	353	348	349	351	6.4	0.120
ADFI, g	530	518	511	511	517	8.2	0.071
G:F	0.680	0.681	0.680	0.681	0.679	0.0034	0.963

Control vs. HP 300 replacing fish meal (P > 0.10).