Supplementing Yucca schidigera extract to mitigate frothy bloat in beef cattle receiving a high-concentrate diet
Autor: | Alice P Brandão, Bruna Rett, Vitor S M Ferreira, Michael J Rincker, Reinaldo F Cooke, Eduardo A Colombo, Ky G Pohler, Jacob B Wiegand, Kelsey M Schubach |
---|---|
Přispěvatelé: | Texas A&M Univ, Universidade Estadual Paulista (Unesp), Distributors Proc Inc, Mississippi State Univ |
Rok vydání: | 2020 |
Předmět: |
Rumen
animal structures animal diseases frothy bloat Yucca schidigera extract Beef cattle Biology Valerate Feed conversion ratio chemistry.chemical_compound Animal science beef heifers Latin square Yucca Genetics Animals Morning chemistry.chemical_classification rumen Plant Extracts General Medicine Animal Feed Diet chemistry physiology Fermentation Propionate Urea Cattle Female Animal Science and Zoology Ruminant Nutrition Food Science |
Zdroj: | J Anim Sci Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
ISSN: | 1525-3163 0021-8812 |
DOI: | 10.1093/jas/skaa355 |
Popis: | Made available in DSpace on 2021-06-25T11:48:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-11-01 Distributors Processing, Inc. (Porterville, CA) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) This experiment compared incidence of frothy bloat, as well as ruminal, physiological, and performance responses of beef heifers receiving a bloat-provoking diet and supplemented with Yucca schidigera extract. Sixteen ruminally cannulated Angus-influenced heifers were ranked by body weight (BW) and assigned to 4 groups of 4 heifers each. Groups were enrolled in a replicated 4 x 4 Latin square design containing 4 periods of 28 d, and a 21-d washout interval between periods. Groups were assigned to receive no Y. schidigera extract (CON), or Y. schidigera extract at (as-fed basis) 1 g/heifer daily (YS1), 2 g/heifer daily (YS2), or 4 g/heifer daily (YS4). During each period, heifers (n = 16/treatment) were housed in individual pens, and fed a sorghum (Sorghum bicolor L.)-based bloat-provocative diet at 2% of their BW. Diet and treatments were individually fed to heifers, twice daily in equal proportions (0700 and 1600 hours). Heifers were assessed for bloat score (0 to 5 scale, increasing according to bloat severity) 3 hr after the morning feeding. Blood samples were collected on days 0, 7, 14, 21, and 28 prior to (0 hr) and at 3, 6, and 9 hr relative to the morning feeding. Rumen fluid samples were collected at the same time points on days 0 and 28. Orthogonal contrasts were tested to determine whether inclusion of Y. schidigera extract (0, 1, 2, or 4 g/heifer daily) yielded linear or quadratic effects, and explore an overall effect of Y. schidigera extract supplementation (CON vs. YS1 + YS2 + YS4). Rumen fluid viscosity was impacted quadratically by Y. schidigera extract inclusion (P = 0.02), being greatest in YS1, followed by YS2, and equivalent between CON and YS4 heifers. Heifers receiving Y. schidigera extract had greater (P = 0.19) including bloat score (1.07 +/- 0.03 across treatments), ruminal protozoa count, plasma concentrations of cortisol, haptoglobin, urea N, total protein, and rumen concentration of total volatile fatty acids. Supplementing Y. schidigera extract up to 4 g/d favored rumen propionate concentrations and linearly increased growth and feed efficiency but failed to mitigate incidence of frothy bloat in beef heifers consuming a grain-based bloat-provocative diet. Texas A&M Univ, Dept Anim Sci, College Stn, TX 77845 USA Univ Estadual Paulista, Fac Med Vet & Zootecnia, BR-18618970 Botucatu, SP, Brazil Distributors Proc Inc, Porterville, CA 93257 USA Mississippi State Univ, Prairie Res Unit, Prairie, MS 39756 USA Univ Estadual Paulista, Fac Med Vet & Zootecnia, BR-18618970 Botucatu, SP, Brazil CAPES: 88887.336406/2019-00 CAPES: 88881.128327/2016-01 |
Databáze: | OpenAIRE |
Externí odkaz: |