TY - JOUR AU - Guerra, Nadia Alejandra Sánchez AU - Muñoz, Miguel Ángel Domínguez AU - Albarrán, Miguel Ruíz AU - Zavala, Rigoberto López AU - Rodríguez, Fidel Infante AU - Quilantán, Luis Manuel Pérez AU - Chavira, Jaime Salinas PY - 2021/05/21 Y2 - 2024/03/28 TI - Effect of orange pulp fermented in solid substrate with Saccharomyces cerevisiae in diets, on productive behavior of confined lambs JF - Emirates Journal of Food and Agriculture JA - Emir J Food Agric VL - 33 IS - 4 SE - Research Article DO - 10.9755/ejfa.2021.v33.i4.2680 UR - https://ejfa.me/index.php/journal/article/view/2680 SP - 314-319 AB - <p>The effect on growth performance of diets containing orange pulp fermented in solid substrate with the yeast <em>Saccharomyces cerevisiae (S. cerevisiae)</em> was evaluated in feedlot lambs. Fifteen non-castrated male lambs (Pelibuey x Dorper) with an initial weight of 22 ± 4 kg were distributed in individual pens in a completely randomized design. The feeding trial lasted 60 days. Treatments were: treatment 1 (T1), 50% commercial feed plus 50% wet basis (WB) of orange pulp fermented with yeast; treatment 2 (T2), 50% commercial feed plus 50% (WB) fresh orange pulp without yeast; and treatment 3 (T3) 100% commercial feed as a total mixed ration. The variables of the study were: average daily weight gain, feed consumption, feed conversion ratio, area of <em>Longissimus dorsi</em> and back fat thickness, the latter two measured at the end of the test using ultrasound. Daily weight gain was significantly lower (P&lt;0.05) in lambs of T2 compared with those of T1 and T3 which had similar (P&gt;0.05) weight gain; average daily gain (ADG) for T1, T2 and T3 was 0.270±0.027, 0.200±0.035 and 0.273±0.038 kg/d, respectively. Feed conversion ratio (feed consumed/weight gain) of lambs in T2 presented worth value (P &lt;0.05) than those of T1 and T3. There was no difference in <em>Longissimus dorsi </em>area or back-fat thickness (P&gt;0.05). In conclusion, substituting orange pulp fermented in solid state with <em>S. cerevisiae</em> for 50% of a commercial diet resulted in similar productive behavior of confined sheep, whereas substitution with non-fermented orange pulp may reduce growth performance of lambs.</p> ER -