ArticleVeterinary world2026
Effects of tropical forage inclusion in concentrate-based diets on digestibility, growth performance, carcass traits, and meat quality of hair sheep under intensive tropical conditions.
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: Intensive sheep production systems in tropical regions frequently depend on concentrate-based diets to sustain rapid growth and carcass quality; however, increasing grain costs have stimulated interest in incorporating locally available tropical forages as partial substitutes. This study evaluated the effects of including Maralfalfa ( Materials and Methods: Two complementary experiments were conducted at the Mocochá Experimental Field of the National Institute of Forestry, Agricultural, and Livestock Research, Yucatán, México. Apparent digestibility was evaluated in 16 Katahdin × Pelibuey rams (27.2 ± 4.3 kg body weight) assigned to four dietary treatments: concentrate feed alone or concentrate feed supplemented with 30% Maralfalfa, Mombaza, or CT-115 on a dry matter basis. Growth performance, carcass characteristics, and meat quality were assessed in 36 Katahdin × Pelibuey lambs (18.0 ± 3.3 kg body weight) fed the same diets for 84 days. Measurements included dry matter intake, apparent digestibility, average daily gain, slaughter live weight, carcass yield, Results: Concentrate-fed lambs showed the greatest apparent digestibility of dry matter, crude protein, neutral detergent fiber, and acid detergent fiber, whereas CT-115 reduced nutrient digestibility, particularly fiber utilization (p < 0.01). Nevertheless, forage inclusion significantly increased total dry matter intake compared with concentrate feed alone (p < 0.01). Average daily gain, slaughter live weight, hot carcass weight, carcass yield, backfat thickness, and Conclusion: The inclusion of up to 30% Maralfalfa, Mombaza, or CT-115 in concentrate-based diets maintained growth performance, carcass characteristics, and meat quality in hair sheep under intensive tropical conditions. Although concentrate-only feeding maximized nutrient digestibility, forage supplementation increased feed intake without compromising productive or carcass responses, supporting the nutritional feasibility of tropical forages as partial concentrate substitutes in sheep production systems.
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