Effects of sodium metabisulfite additives on nursery pig growth

Abstract

Sodium metabisulfite (SMB)-based feed additive efficacy was evaluated in three nursery pig growth experiments where pigs were fed diets containing low deoxynivalenol (<1.5 mg/kg; DON) concentrations. Pigs were weaned at approximately 22 d of age and randomly allotted to pens with one pen of 27 gilts and one pen of 27 barrows per feeder; thus, feeder was the experimental unit. In experiment 1, a total of 2,268 pigs were used in a 35-d trial with 21 feeders per treatment. Experimental treatments included a control diet or the control with 0.50% SMB-based Product 1 (Defusion; Provimi, Brookville, OH) fed in phase 1 and 0.25% fed in phases 2 and 3, then all pigs were fed a control diet for the last week of the study. Pigs fed Product 1 had greater (P < 0.05) ADG, ADFI, and G:F compared with pigs fed the control diet from days 0 to 28. However, from days 28 to 35, the opposite response was observed with pigs fed the control diet having greater ADG and G:F than pigs previously fed Product 1. Despite this response, pigs fed Product 1 were heavier (P < 0.05) on day 35 than control-fed pigs. In experiment 2, a total of 4,320 pigs were used in a 42-d trial. Pigs were fed a control diet or diets with SMB-based either Product 1 or Product 2 (NutriQuest, Mason City, IA) at different concentrations and durations. Among the various treatments, Product 1 or Product 2 concentrations ranged from 0.50% initially to 0.25%, 0.15%, or none the last week of the study. Overall, pigs fed either of the additives at the highest concentrations and for the longest period of time had greater (P < 0.05) ADG and ADFI compared with pigs fed the control diet, with those fed lower concentrations or shorter durations being intermediate. In experiment 3, a total of 2,808 pigs were used in a 28-d trial with 13 feeders per treatment. All pigs were fed a common diet for 7 d after weaning. Pigs were then fed either a control diet (without any SMB-containing product) or a diet containing Product 1 (0.50% and 0.25% from days 0 to 21 and 21 to 28, respectively) or SMB (0.50% and 0.25% from days 0 to 21 and 21 to 28, respectively) or 0.25% SMB from days 0 to 28. Overall, pigs fed Product 1 or high-SMB diets had greater (P < 0.05) ADG compared with pigs fed low-SMB or control diets. In conclusion, results of these experiments indicate that in diets with low DON concentrations, these SMB-based products increased ADG compared with control diets.

Effects of feeding high-protein corn distillers dried grains and a mycotoxin mitigation additive on growth performance, carcass characteristics, and pork fat quality of growing–finishing pigs1

“…This observation is consistent with results reported by Patience et al (2014) , where adding MA reduced the negative effect of DON on ADFI and improved ADG in growing–finishing pigs. Shawk et al (2019) observed a growth response of MA in nursery pigs regardless of DON levels and suggested that MA could lead to a growth response in addition to effective binding of mycotoxins. However, Shawk et al (2018) did not observe similar effects in a finishing pig study.…”

A porous ceramic particle with or without a preservative blend did not impair apparent digestibility of macro- and micro-nutrients of postweaned pigs

“…When DON contaminated feed is supplemented with SMB, the sulfur group combines with DON to form 10-sulfonate adduct, or DON-S, which is not as deleterious to pigs. In models of both high and low concentrations of DON contamination, supplementation of SMB in the diets showed benefits on ADG, BW, ADFI, as well as decreased DON availability within the feed ( Frobose et al, 2015 ; Shawk et al, 2018 ).…”

Post-weaning diarrhea and use of feedstuffs in pigs

“…Hydrothermally processing DON-contaminated diets with 1.0% SMBS restored ADFI and improved G:F in the nursery pigs ( Frobose et al, 2017 ). Shawk et al (2019) also reported that in diets with low DON concentrations (<1.5 mg/kg), SMB-based products increased ADG compared with control diets. Pigs fed high DON diets (4.17 mg/kg) had reduced performance compared with pigs fed low DON.…”