Resumen

CABALLERO MASCHERONI, Jorge Daniel et al. Inclusion of levels of cotton expeller in the feeding of confined sheep: productive behavior, carcass characteristics and meat quality. Manglar [online]. 2023, vol.20, n.3, pp.195-200.  Epub 09-Oct-2023. ISSN 1816-7667.  http://dx.doi.org/10.57188/manglar.2023.022.

To substitute soybean meal with different levels of cottonseed meal, twelve non-castrated male Santa Inés × Dorper sheep with an average initial weight of 27.33 ± 0.58 kg and age of 225 ± 15 days were used. The treatments consisted of three levels of cottonseed meal (0%, 15%, and 30%), with four replicates, distributed in a completely randomized experimental design. The diets consisted of totally mixed rations, with a forage-concentrate ratio of 30:70 (dry matter basis). Cottonseed meal levels did not affect (p > 0.05) dry matter intake for up to 28 days, then values decreased linearly. Feed conversion and daily weight gain were improved up to 28 days and then decreased linearly (p ≤ 0.05)In the same way, cooling and cooking weights losses and the shear force were affected and with a quadratic behavior (p ≤ 0.05) by the levels of cottonseed meal, standing out the level of 15%, while the live weight, hot and cold carcass weight and yield, loin eye area, the thickness of subcutaneous fat were not affected by the treatments (p > 0.05). Cottonseed meal can replace up to 20% of the soybean meal in sheep concentrate feed for a period not to exceed 28 days.

Palabras clave : Byproduct; Dry matter intake; Feed conversion; sheep; weight gain.

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