ArticleVeterinary world2026
Synergistic effects of <em>Leucaena leucocephala</em>-ginger phytogenic pellet on rumen fermentation, microbial protein synthesis, and enteric methane mitigation in Thai native beef cattle.
Article in Veterinary world, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and Aim: Enteric methane (CH Materials and Methods: Four female Thai native beef cattle (230 ± 10 kg) were assigned to a 4 × 4 Latin square design. Animals received a basal diet consisting of concentrate at 1.0% of body weight and rice straw, supplemented with LGP at 0, 50, 100, or 150 g/head/day. Each experimental period lasted 21 days, including 14 days of adaptation and 7 days of sampling. Feed intake, nutrient digestibility, rumen fermentation characteristics, blood metabolites, microbial populations, and microbial protein synthesis were evaluated. Results: LGP supplementation did not affect feed intake, ruminal pH, ammonia nitrogen concentration, or blood urea nitrogen levels (p > 0.05). However, supplementation improved dry matter digestibility, increasing from 55.4% to 60.0%, and neutral detergent fiber digestibility, increasing from 60.1% to 67.6% (p < 0.05). The highest supplementation level (150 g/head/day) increased ruminal propionate concentration to 28.8 mol/100 mol and enhanced bacterial populations and microbial protein synthesis, reaching 68.1 g N/day (p < 0.05). Protozoal counts declined to 4.8 × 10⁶ cells/mL, accompanied by a reduction in estimated CH Conclusion: Supplementation with LGP at 150 g/head/day effectively improved rumen fermentation efficiency, enhanced fiber utilization and microbial protein synthesis, increased propionate production, and reduced protozoal populations and enteric CH
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