Effects of Bacillus subtilis ATCC PTA-122264 on Apparent Total Tract Macronutrient Digestibility and Fecal Characteristics, Metabolites, and Microbiota of Healthy Adult Dogs
IF 2.7 2区 农林科学Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Patrícia M Oba, Olivia R Swanson, Yifei Kang, Julio C Mioto, John F Menton, Elena Vinay, Mathieu Millette, Melissa R Kelly, Kelly S Swanson
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引用次数: 0
Abstract
Gastrointestinal and stool quality issues are common in companion animals. In addition to dietary fibers and prebiotics, the consumption of live microorganisms may be used to support the gastrointestinal health of pets. Spore-forming Bacillus species are gaining interest due to their viability during processing, storage, and within the gastrointestinal tract. The objective of the current study was to determine the effects of B. subtilis ATCC PTA-122264 supplementation on dietary apparent total tract macronutrient digestibility and the fecal characteristics, metabolites, and microbiota of healthy adult dogs. Twelve healthy adult beagle dogs (6 ± 1.14 yr; 8.71 ± 0.91 kg body weight) were used in a replicated 3x3 Latin square design. Dogs were fed to maintain body weight and allotted to one of three treatments each experimental period (n=12/treatment): Control [kibble diet + placebo (1.25 g of maltodextrin)], Low [kibble diet + 1×109 colony-forming units (CFU)/day of B. subtilis], and High (kibble diet + 5×109 CFU/day of B. subtilis). Each experimental period was composed of a 22-day adaptation phase, 5-day fecal collection phase, and one day for blood collection. Fecal microbiota data were evaluated using QIIME2. All other data were analyzed using the Mixed Models procedure of SAS, with P<0.05 being considered significant. B. subtilis supplementation tended to decrease (P<0.10) apparent total tract dry matter, organic matter, and energy digestibilities, but did not influence food or energy intake, fecal output, and apparent total tract protein or fat digestibilities. Most serum metabolites, hematology, fecal characteristics, and fecal bacterial alpha and beta diversity indices were not affected. Fecal dysbiosis index tended to be affected and fecal Streptococcus, Escherichia coli, and Blautia abundances were lower (P<0.05) in dogs allotted to the Low treatment. These data suggest that daily supplementation of up to 5×109 CFU/day of B. subtilis ATCC PTA-122264 is safe and does not affect markers of general health and fecal characteristics of healthy dogs, warranting further exploration.
期刊介绍:
The Journal of Animal Science (JAS) is the premier journal for animal science and serves as the leading source of new knowledge and perspective in this area. JAS publishes more than 500 fully reviewed research articles, invited reviews, technical notes, and letters to the editor each year.
Articles published in JAS encompass a broad range of research topics in animal production and fundamental aspects of genetics, nutrition, physiology, and preparation and utilization of animal products. Articles typically report research with beef cattle, companion animals, goats, horses, pigs, and sheep; however, studies involving other farm animals, aquatic and wildlife species, and laboratory animal species that address fundamental questions related to livestock and companion animal biology will be considered for publication.