Effects of tributyrin supplementation on in vitro culture fermentation and methanogenesis and in vivo dietary nitrogen, calcium and phosphorus losses in Small Tail ewes

Abstract Butyric acid and its salt have been used as feed additives to improve feed efficiency, nutrient degradability and animal growth. In this study, an in vitro trial was conducted to evaluate the effects of tributyrin (TB) supplementation on fermentation, enzyme activity and gas production at dosages of 0, 2, 4, 6 and 8 g/kg dry matter (DM) basis in substrate, which was incubated for 36 h. In addition, an in vivo trial with the same concentrations of TB in diet as in vitro trial was conducted to assess the influence of TB addition on utilization of dietary nitrogen, calcium and phosphorus. Forty-five adult Small Tail ewes were randomly assigned to 5 treatments of 9 ewes each by initial body weight (55 ± 5 kg, mean ± SD). The in vivo trial lasted 18 days, and ewes had free access to water and the ration mixed with TB. The results showed that TB decreased in vitro molar proportion of acetate (P

• Publication year

  2018

• Venue

  Animal Feed Science and Technology

• Publication date

  2018-09-01

• Fields of study

  Agricultural and Food Sciences, Chemistry

• Identifiers
  DOI 10.1016/J.ANIFEEDSCI.2018.07.008
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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