Productivity Assessment Based on Animal Protein Sources in Weanling Pigs

Abstract Text: Animal protein sources are used in weanling pigs because they are highly digestible and do not contain the anti-nutritional factors. Pigs [(Yorkshire×Landrace)×Duroc, BW=7.99±0.44 kg] were randomly allotted to 1 of 4 treatments (7 rep./trt. with 4 pigs/pen) for a 5-wk experiment (phase 1, d 1 to 14; phase 2, d 15 to 35). Treatments were: LT, 5 and 3% soybean meal replaced by low temperature fish meal in phase 1 and 2, respectively, 70% CP; PD-CBM, 5 and 3% soybean meal replaced by pre-digested chicken by-product meal in phase 1 and 2, respectively, 59% CP; PD-SH, 5 and 3% soybean meal replaced by pre-digested swine hair in phase 1 and 2, respectively, 68% CP; FSBM, 6 and 3% soybean meal replaced by fermented soybean meal in phase 1 and 2, respectively, 56% CP. Pigs fed PD-CBM had higher (P<0.05) average daily gain (ADG) in phase 1, 2 and overall, higher (P<0.05) gain/feed (G/F) in phase 1 and overall, and higher (P<0.05) digestibility of nitrogen than that fed FSBM during the 2^nd wk. Treatment PD-CBM exerted higher (P<0.05) ADG in phase 1, higher (P<0.05) average daily feed intake in phase 2 and overall, and higher (P<0.05) digestibility of nitrogen during the 2^nd wk compared with that in LT. There was higher (P<0.05) G/F in LT than that in FSBM in phase 2. The digestibility of dry matter and nitrogen were higher (P<0.05) in PD-CBM than that in PD-SH or FSBM. The serum creatinine concentration was higher (P<0.05) in LT and PD-CBM than that in PD-SH. The blood urea nitrogen was higher (P<0.05) in PD-CBM than that in FSBM. In conclusion, results indicate that 5 and 3% soybean meal replaced by pre-digested chicken by-product meal can enhance growth performance and digestibility.

Table 1. Effect of animal protein sources on performance in weanling pigs
Date/Period	Items	LT	PD-CBM	PD-SH	FSBM	SE
Phase-1	ADG, g	464b	482a	471ab	459b	5
	ADFI, g	644	646	647	637	5
	G/F	0.721	0.746	0.728	0.720	0.010
Phase-2	ADG, g	606ab	636a	586ab	556b	17
	ADFI, g	868b	901a	890a	884ab	6
	G/F	0.698a	0.706a	0.659ab	0.629b	0.018
Overall	ADG, g	549ab	574a	540ab	517b	15
	ADFI, g	779b	799a	793ab	785ab	5
	G/F	0.705ab	0.719a	0.681ab	0.658b	0.017
2nd wk	Nitrogen	83.04b	85.28a	83.43ab	81.85b	0.69
5th wk	Dry matter	81.93ab	83.89a	81.56b	81.39b	0.70
	Nitrogen	81.61ab	84.05a	80.78b	80.94b	0.81

  Keywords: animal protein, digestibility, weanling pig