Effect of D-mannitol on nitrogen retention, fiber digestibility and digesta transit time in adult rabbits

Xiao Min, Xiao Li, Shouko Hiura, Kiyonori Kawasaki, Jin Xiao, Ei Sakaguchi

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The aim of the current study was to elucidate the effect of gastrointestinal retention time of digesta on fiber digestibility in adult rabbits fed indigestible, but fermentable, sugar D-mannitol. Six adult rabbits were fed alternately a commercial diet containing 5% glucose and a diet containing D-mannitol. Total feces and urine were collected during the experimental period. Nitrogen (N) balance, digestibility of nutrients, and gastrointestinal mean retention time (MRT) were measured. The results indicated that urinary excretion was significantly lowered, whereas N retention and N accumulation rates were significantly increased in the D-mannitol group compared with the glucose group (P<0.05). However, fecal N excretion was unaffected. Absorption of crude ash (CA) and acid detergent fiber (ADF) digestibility were significantly higher in the D-mannitol group compared with the glucose group (P<0.05). The addition of D-mannitol to the diet did not affect the MRT of liquid digesta, but increased the MRT of solid digesta compared with the glucose group (P<0.05). These results suggest that the addition of D-mannitol to the diet stimulates cecal bacterial growth, thereby increasing N utilization and digesta retention time.

Original languageEnglish (US)
Pages (from-to)551-555
Number of pages5
JournalAnimal Science Journal
Volume84
Issue number7
DOIs
StatePublished - Jul 1 2013
Externally publishedYes

Keywords

  • Adult rabbits
  • D-mannitol
  • Fiber digestibility
  • N retention
  • Retention time

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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