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Effects of Rumen-Protected Choline and Methionine on In Vitro Gas Production and Rumen Fermentation

Strategic Insights

— 2 min read

Research conducted by scientists from the University of Tehran, Iran, has investigated the impact of rumen-protected choline and methionine on in vitro gas production kinetics and rumen fermentation characteristics. The study aimed to examine the effects of these amino acids on biogas accumulation, kinetics, and rumen fermentation profile. The research found that the addition of rumen-protected choline and methionine did not affect cumulative gas production and gas production kinetics during the various incubation times compared to the control group.

Key Takeaways:

  • The experimental design was a 2x2 factorial arrangement in a completely randomized design (CRD) with six replicates per treatment, utilizing an in vitro gas production approach.
  • Total gas production volume and fermentation parameters were measured at 2, 4, 6, 8, 12, 24, 36, 48, 72, and 96 hours of incubation.
  • The addition of experimental RPC, RPM, or their mixture did not affect cumulative gas production and gas production kinetics during the various incubation times compared to the control group.
  • For all evaluated parameters of the in vitro rumen fermentation profile, including pH, DMD, OMD, and SCFA, no interactions were observed compared to the control.
  • The research concluded that additional studies are required to test the correctness and precision of the current data offered in the paper through using updated technology.
  • The study was conducted at the University of Tehran, College of Agriculture and Natural Resources, Dept. of Animal Sciences, Alborz, Karaj, Iran.
  • The research was published in the Journal of the Hellenic Veterinary Medical Society, 2025;76(2):9271-9280.
  • The authors of the study include A. Fekri from the University of Tehran, M. Ganjkhanlou, A. Zali, M. Dehghan-Banadaky, M. Sadeghi, and M. Ramin.

Statistics:

  • The study was conducted at 2, 4, 6, 8, 12, 24, 36, 48, 72, and 96 hours of incubation.
  • The experimental design had six replicates per treatment.
  • The research found that the addition of experimental RPC, RPM, or their mixture did not affect cumulative gas production and gas production kinetics during the various incubation times compared to the control group.
  • The parameters of the in vitro rumen fermentation profile, including pH, DMD, OMD, and SCFA, showed no interactions with the control group.

Sources:

  • Effects of Rumen Protected Choline and Methionine On In Vitro Gas Production Kinetics and the Characteristics of Rumen Fermentation. Journal of the Hellenic Veterinary Medical Society, 2025;76(2):9271-9280.
  • NewsRx. Researchers from University of Tehran Detail Findings in Chemicals and Chemistry (Effects of Rumen Protected Choline and Methionine On In Vitro Gas Production Kinetics and the Characteristics of Rumen Fermentation). Chemicals & Chemistry. August 15, 2025; p 3357.

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