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Animal


Title:Effects of bismuth subsalicylate and calcium-ammonium nitrate on ruminal in vitro fermentation of bahiagrass hay with supplemental molasses
Author(s):Henry DD; Ciriaco FM; Araujo RC; Garcia-Ascolani ME; Fontes PLP; Oosthuizen N; Sanford CD; Schulmeister TM; Ruiz-Moreno M; Lamb GC; DiLorenzo N;
Address:"Department of Animal Sciences, North Florida Research and Education Center, University of Florida, Marianna, FL 32446-7906, USA; Department of Animal and Food Sciences, Texas Tech University, Lubbock, TX 79409-2141, USA. Electronic address: darren.henry@ttu.edu. Department of Animal and Food Sciences, Texas Tech University, Lubbock, TX 79409-2141, USA. GRASP Ind. & Com. LTDA, Curitiba, Parana 81260-000, Brazil; EW|Nutrition GmbH, Visbek 49429, Germany. Department of Animal Sciences, North Florida Research and Education Center, University of Florida, Marianna, FL 32446-7906, USA. Department of Animal and Dairy Science, University of Georgia, Athens, GA 30602-1506, USA. Department of Animal Science, Texas A&M University, College Station, TX 77843-2471, USA"
Journal Title:Animal
Year:2021
Volume:20210523
Issue:5
Page Number:100195 -
DOI: 10.1016/j.animal.2021.100195
ISSN/ISBN:1751-732X (Electronic) 1751-7311 (Linking)
Abstract:"There is a need to increase efficiency of beef production. Decreasing losses of CH(4) and improving byproduct utilization are popular strategies. Two feed additives were tested to find potential solutions. Three randomized complete block design experiments were performed using batch culture systems to evaluate the effects of bismuth subsalicylate (BSS) and calcium-ammonium nitrate (CAN) on in vitro ruminal fermentation of bahiagrass hay and supplemental molasses. The first experiment contained four treatments: (1) basal substrate; (2) basal substrate with 0.75% urea (DM basis); (3) basal substrate with 1.2% CAN and 0.38% urea (DM basis); and (4) basal substrate with 2.4% CAN (DM basis). Treatments 2, 3, and 4 were isonitrogenous. The second experiment had a 4?ª+x?ª+3 factorial arrangement of treatments with 4 concentrations of BSS (0.00, 0.33, 0.66, and 1.00%; DM basis) and 3 concentrations of CAN (0.0, 1.2, and 2.4%; DM basis). The third experiment had the following treatments: (1) basal substrate; (2) basal substrate with 0.05% BSS (DM basis); (3) basal substrate with 0.10% BSS (DM basis); and (4) basal substrate with 0.33% BSS (DM basis). For all experiments, basal substrate consisted of Pensacola bahiagrass hay (Paspalum notatum Flugge; 80% substrate DM) and molasses (20% substrate DM). All data were analyzed using the MIXED procedure of SAS. In Exp. 1, in vitro organic matter (OM) digestibility (IVOMD) was linearly reduced (P?ª+?ª+0.05). In Exp. 2, except for CH(4) production (P?ª+?ª+0.05); however, production of H(2)S was linearly decreased (P?ª+=?ª+0.004) with the inclusion of BSS up to 0.33%. In conclusion, in vitro fermentation was negatively impacted by the inclusions of BSS, up to 1%, and CAN, up to 2.4%; however, BSS decreased production of H(2)S when included up to 0.33% without impeding fermentation, while CAN decreased CH(4) production"
Keywords:Animal Feed/analysis Animals Bismuth Calcium/metabolism Cattle Diet Dietary Supplements Digestion Fermentation Molasses Nitrates Organometallic Compounds *Paspalum Rumen/metabolism Salicylates Batch culture Beef cattle Digestibility Hydrogen sulfide Metha;
Notes:"MedlineHenry, D D Ciriaco, F M Araujo, R C Garcia-Ascolani, M E Fontes, P L P Oosthuizen, N Sanford, C D Schulmeister, T M Ruiz-Moreno, M Lamb, G C DiLorenzo, N eng Randomized Controlled Trial, Veterinary England 2021/05/25 Animal. 2021 May; 15(5):100195. doi: 10.1016/j.animal.2021.100195. Epub 2021 May 23"

 
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