test Effects of Replacing Alfalfa Hay with Amaranthus caudatus Hay on Digestibility, Methane Emissions, and Microbial Protein Efficiency in Ruminant Diets|Journal of the Hellenic Veterinary Medical Society

Effects of Replacing Alfalfa Hay with Amaranthus caudatus Hay on Digestibility, Methane Emissions, and Microbial Protein Efficiency in Ruminant Diets

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Publiée : Nov 6, 2025
DOI : https://doi.org/10.12681/jhvms.39405
ÇÖ Özkan
Organic Farming Department, Goksun Vocational School, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkiye
B Selçuk
Department of Crop and Animal Production, Ondokuz Mayıs University, Samsun, Turkiye
T Bakir
Department of Animal Science, Kahramanmaras Sütçü İmam University, Kahramanmaras, Türkiye
Y Bilal
Department of Animal Science, Kahramanmaras Sütçü İmam University, Kahramanmaras,
A Kamalak
Department of Animal Science, Kahramanmaras Sütçü İmam University, Kahramanmaras,
Résumé

The study aimed to assess the impact of substituting alfalfa hay with Amarant (Amaranthus caudatus) hay in ruminant diets on fermentation parameters. Using in vitro gas production, diets with Amaranth hay at 0%, 10%, 20%, and 30% were formulated, maintaining isocaloric and nitrogenic levels. While methane (CH4) production remained unchanged, notable effects were observed on true digestible dry matter (TDDM), true digestibility (TD), gas and methane production per digested dry matter (DM), and microbial protein. Substituting alfalfa with Amaranth hay favored microbial protein production over gas and methane, suggesting potential replacement up to 30%. This substitution reduced methane production and enhanced microbial protein. Further in vivo experiments are necessary to evaluate its impact on feed intake and overall animal production.

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