An evaluation of peptone as a specialty protein source in diets for nursery pigs

[Nutrimail]

Two experiments were conducted to evaluate the effects of select menhaden fish meal (SMFM), spray-dried animal plasma (SDAP), and two forms of a spray-dried ultrafiltrated porcine intestinal mucosa (Peptone 1 and 2) on nursery pig performance. In Exp. 1, 216 weanling pigs (initial BW 5.4 kg) were fed either (1) a control diet containing no specialty protein sources or the control diet with (2) 4% SMFM during Phase 1 and 2% SMFM during Phase 2, (3) 4% SDAP during Phase 1 and no specialty protein sources during Phase 2, (4) 4% SDAP during Phase 1 and 2% SDAP during Phase 2, (5) 4% Peptone 1 during Phase 1 and no specialty protein sources during Phase 2, or (6) 4% Peptone 1 during Phase 1 and 2% Peptone 1 during Phase 2. Pigs were fed Phase 1 diets from d 0 to 10 postweaning followed by Phase 2 diets from d 10 to d 20 and a common Phase 3 diet that contained no specialty proteins for 7 d. From d 0 to 10 or d 0 to 27, there were no differences (P > 0.05) in ADG or F/G.

In Exp. 2, 180 weanling pigs (initial BW 5.90 kg) were fed either (1) a control diet containing no specialty protein sources or the control diet with (2) 4% SMFM during Phase 1 and 2% SMFM during Phase 2, (3) 4% SDAP during Phase 1 and no specialty protein sources during Phase 2, (3) 4% SDAP during Phase 1 and 2% SDAP during Phase 2, (5) 4% Peptone 2 during Phase 1 and no specialty protein sources during Phase 2, or (6) 4% Peptone 2 during Phase 1 and 2% Peptone during Phase 2. Pigs were fed Phase 1 diets from d 0 to 10 postweaning followed by a Phase 2 diet from d 10 to d 25. Pigs were then fed a common Phase 3 diet that contained no specialty proteins for 7 d. From d 0 to 10, pigs fed diets containing Peptone 2 had improved (P < 0.10) F/G compared with pigs fed the control diet. Overall (d 0 to 32), pigs fed 4% Peptone 2 during Phase 1 and 2% Peptone 2 during Phase 2 had improved (P < 0.05) ADG compared with pigs fed 4% SMFM during Phase 1 and 2% SMFM during Phase 2. Pigs fed 4% Peptone 2 during Phase 1 and 2% Peptone 2 during Phase 2 had improved (P < 0.05) F/G compared with pigs fed all other diets.

In conclusion, the Peptone products evaluated in these studies can be used in nursery pig diets without negatively affecting pig growth performance.

tags: nutrition piglet feed performance

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