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Abstract
Abstract The objective of this experiment was to determine effects of using ATPsorb™ in diets containing bakery meal and/or pet food by-product without added fat as alternative summer feeding strategies on growth performance of grow-finishing pigs. A total of 1,293 DNA-sired growing pigs (initial BW: 67.2 ± 3.2 lb) were randomly assigned to 4 dietary treatments in a complete randomized design. There were 26 to 27 pigs (mixed sex) in each pen and 12 replicate pens per treatment. The 4 dietary treatments were 1) Corn-SBM based diet with 20% corn DDGS (CSD); 2) Corn-SBM based diet with 20 % bakery meal (CSB); 3) Corn-SBM based diet with 20% bakery meal and 20% pet food by-product (CSBP); 4) CSBP + 1 lb/ton of ATPSorb™ (ATP), a source of lecithin and NSP degrading enzymes. The 4 dietary treatments were applied over 7 phases and were fed to a fixed feed budget by phase. Feed disappearance and BW were recorded by pen on d 0, 20, 45, and 74 and used to calculate ADG, ADFI, and feed conversion ratio (FCR). After d 74, an equal number of pigs from each pen were marketed, and marketed weight was recorded based on the 4 individual cuts. Data were analyzed using the GLM procedure in Minitab and pairwise comparisons by treatment were made using Fisher’s Test. CSB treatment had greater (P < 0.05) BW on d 74 compared to CSD and CSBP treatments but no difference between CSB and ATP was observed. For the overall period, final BW tended to be greater (P < 0.10) in pigs fed CSB or ATP compared to pigs fed CSD. Similarly, pigs fed CSB had greater (P < 0.05) ADG compared to pigs fed CSD or CSBP but no difference between pigs fed CSB and ATP was observed during d 0 to 74. However, pigs fed CSD and CSB had greater (P < 0.05) ADFI than pigs fed CSBP during d 0 to 74 and the overall period. Collectively, pigs fed CSBP and ATP had better (P < 0.05) FCR than pigs fed CSD and CSB. This data suggests that using 20% of bakery meal by replacing 20% corn DDGS in corn-SBM based diet is beneficial for growth and using 20 % of pet food by-product improves feed efficiency over using 20 % bakery meal alone during the summer season. However, adding pet food by-product impacts ADFI negatively (and therefore ADG), but in this experiment adding ATPsorb™ alleviated the negative impact of adding pet food by-product on ADFI and ADG allowing both ADG and FCR benefit to be realized from feeding pet food by-product for cost per lb of gain (ADG and FCR) and margin over feed (ADG) during peak summer.
Published Version
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