Effect of a Bacillus-based direct-fed microbial feed supplement on growth performance and pen cleaning characteristics of growing-finishing pigs

This study demonstrates that administration of a direct-fed microbial additive to swine diets is an effective means of distributing microorganisms selected to promote solids degradation in manure pits

M. E. Davis

2008

Scholarcy highlights

  • Intensified swine production faces many challenges related to managing manure output, such as storage and handling of manure, ammonia and odor production, and the accumulation of solids on pen floor surfaces and within manure storage facilities
  • Evaluation of Bacillus supplementation in a commercial swine facility using statistical process control is illustrated in Figures 3, 4, and 5, in which the mean, upper control limit, and lower control limit are displayed for the baseline period and the treatment period
  • There are several remedies available to aid in handling, processing, and management of swine waste that are mostly targeted toward alleviating odorous compounds and decreasing nitrogen loss through the volatilization of ammonia
  • These approaches include dietary alterations to reduce or alter N excretion in urine and feces, gastrointestinal microbial manipulation to decrease excretion of malodorous compounds, feed additives to alter manure pH and ammonia losses, and pit additives to enhance manure break-down. Most of these approaches fail to address the primary problem of inadequate microbial decomposition of manure, and microbial pit additives are difficult to administer such that the effective microorganisms are consistently distributed within manure storage facilities
  • This study demonstrates that administration of a direct-fed microbial additive to swine diets is an effective means of distributing microorganisms selected to promote solids degradation in manure pits
  • When all data points fall within the UCL and LCL, the site would be considered to be “in control”, meaning each measurement is falling within a predictable, controlled variation caused by many sources within a swine production facility
  • These data suggest this direct-fed microbial, composed of Bacillus organisms selected to aid in the manure decomposition process, improves pen cleaning in growing/finishing facilities and growth performance of growing-finishing pigs

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