293 Impact of a direct-fed microbial at three inclusion rates on growth performance in growing and finishing pigs. (1st March 2017)

• Record Type: Journal Article
• Authors: Weiland, S. A.; Waugh, T.; Patience, J. F.
• Is Part Of: Journal of animal science. Volume 95(2017)Supplement 2
• Page Start: 142
• Page End: 143
• Publication Date: 2017-03-01
• Subjects: direct-fed microbial -- Lactobacillus -- swine; Livestock -- Periodicals; Livestock; Electronic journals; Periodicals; 636.005
• DOI: 10.2527/asasmw.2017.293
• Languages: English
• ISSNs: 0021-8812

Abstract

Abstract: The increasing restriction of antibiotic use in the swine industry has driven interest in antibiotic alternatives, including direct-fed microbials (DFM). The objective of this experiment was to evaluate the growth response to the addition of a direct-fed microbial (LactoPlan; KayDee Feed Co., Sioux City, IA) in the diet of grow–finish pigs. A total of 300 crossbred pigs with an average initial BW of 29.7 ± 0.3 kg were randomly assigned to 60 pens, which, in turn, were randomly assigned to 1 of 4 dietary treatments according to the completely randomized design. Dietary treatments were 1) negative control (NC), 2) NC plus 0.05% DFM, 3) NC plus 0.10% DFM, and 4) NC plus 0.20% DFM. The experiment was conducted using 4 dietary phases. Pigs were given ad libitum access to water and feed throughout the experiment and were marketed at a constant BW of approximately 125 kg. Data were analyzed using PROC MIXED of SAS (9.4; SAS Inst. Inc., Cary, NC), with initial BW as a covariate. Treatment means were separated using contrasts. There was a trend for 0.05% DFM to increase ADG and ADFI compared with the NC. The greatest response was achieved with 0.05% DFM; none of the other DFM levels achieved improvement in ADG or ADFI compared with the control diet. There was no treatment effect for G:F ( P ≥ 0.10). In conclusion, diets containing 0.05% DFM tended to improve ADG and ADFI over the NC; higher levels of DFM inclusion failed to provide benefit compared with the NC. :