. 2015 Sep 26;1(3):170–176. doi: 10.1016/j.aninu.2015.08.013

Table 3.

Effect of different dietary protein sources and levels in antibiotic-free diets on growth performance and incidence of diarrhea of weaned piglets.¹

Variable	Control	SPC19	FM19	SPC23	FM23	SEM	P-value²
Variable	Control	SPC19	FM19	SPC23	FM23	SEM	Diets	Basal	Source	Level	Source × level
Initial BW, kg	5.98	6.00	5.99	5.97	5.98	0.14	0.999	0.951	0.974	0.886	0.949
Final BW, kg	7.48^a	6.57^b	6.73a^b	6.33^b	6.28^b	0.19	0.001	0.001	0.758	0.077	0.580
ADG, g	107^a	39.71^b	53.15a^b	37.46^b	25.60^b	13	0.003	0.001	0.956	0.303	0.380
ADFI, g	197	169	174	178	155	13	0.293	0.073	0.491	0.734	0.294
G:F	0.56^a	0.30a^b	0.29a^b	0.24a^b	0.18^b	0.07	0.011	0.001	0.659	0.249	0.752
Diarrhea incidence, %	24.6c	47.2a^b	40.1^b	53.6^a	56.2^a	1.99	0.001	0.001	0.272	0.001	0.021

SPC = soy protein concentrate; FM = fish meal.

^a,b,cWithin a row, values without a common superscript differ (P < 0.05), comparisons are from orthogonal contrasts.

Control = control diet of 17% CP; SPC19 = 19% CP diets formulated with more soy protein concentrate; FM19 = 19% CP diets formulated with more fish meal; SPC23 = 23.7% CP diets formulated with more soy protein concentrate; FM23 = 23.7% CP diets formulated with more fish meal.

Diets, all five diets; Basal, control compared to supplemented diets; Source, additional soy or fish protein; Level, 19 and 23.7%. Values are least squares means for 6 replicate pens per treatment.