37 Supplemented with Yucca Schidigera Extract to Feedlot Cattle Consuming Diets with or Without Monensin
نویسندگان
چکیده
Abstract This experiment compared performance and physiological responses of feedlot cattle receiving a saponin containing feed ingredient manufactured from purified extract Yucca schidigera [Micro-Aid (MA); DPI Global, Porterville, CA] which replaced or was fed in conjunction with feed-grade antimicrobials. Yearling, Angus-influenced steers (n = 20) arrived at the experimental on d -19 shrunk body weight (BW; 309 ± 4 kg) immediately recorded. Steers were ranked by BW allocated to groups 30 each. Groups housed drylot pens equipped GrowSafe automated feeding systems (4 bunks/pen) during (d -15 69). On 0 randomly assigned receive total mixed ration containing: monensin tylosin (RT; 360 mg/steer daily Rumensin 90 Tylan; Elanco Animal Health, Greenfield, IN) and/or g/steer MA 2 × factorial arrangement treatments. During period non-supplemented (CON) received no additives. Individual intake recorded daily, steer every 28 before slaughter. slaughtered according slaughter balanced treatments (36 120, 36 146, 48 174). Carcass traits upon 55 eight rumen-cannulated heifers yearling (1 pair/pen). Pairs rotated among 21 d, resulting Latin Square design 8 per treatment) 5-day washout between rotations. Rumen fluid collected pairs 55, 75, 90,110, 125, 145, 160, 180 (beginning end each 21-day rotation) pH after collection. No RT treatment interactions detected (P > 0.10). Feed decreased < 0.01) RT, whereas efficiency greater 0.02) RT. variables including hot carcass weight, backfat thickness, Longissimus muscle area, marbling, yield grade, percent carcasses grading choice better did not differ ≥ 0.17). 0.04) had 0.03) rumen viscosity. Collectively, supplementing improved viscosity, but failed impact measures cattle.
منابع مشابه
nishing diets for feedlot cattle
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2023
ISSN: ['0021-8812', '1525-3163', '1525-3015', '1544-7847']
DOI: https://doi.org/10.1093/jas/skad068.036