100 Methane Production in Roughage-Lacking Diets Containing Ionized Amino Acids as Antibiotic Alternative
نویسندگان
چکیده
Abstract The use of antibiotics in animal feed, commonly used as a strategy to achieve greater daily weight gains and recently way reduce methane emission, might result the selection resistant microorganisms certain bacterial strains isolated from cattle are multiple could be human health hazards. To evaluate production ruminant diet without roughage containing ionized amino acids antibiotic alternative, twenty-four Nellore young bulls were allotted into two groups. first group was fed with high-grain diet, 82 mg/kg mixture (L-lysine L-taurine HCl 99%, pH 9.74) manufactured by MJ Animal Nutrition. second Brachiaria brizantha hay (15% dry matter) sodium monensin (120 mgּּ -1 ּּ day-1). It not negative control avoid metabolic disturbances. feedlot time 100 days. measurements performed at beginning trial period monthly, always water restriction fasting for 18 hours, even before slaughter. A completely randomized design used. Methane emission measured using sulfur hexafluoride technique matter intake GrowSafe system. There no detection lameness or laminitis any groups there changes feed conversion ratio (FCR). total (-77.11%) per (DMI; -57.12 %), average gain (ADG; -71.11%) kilogram carcass (-70.07%) different between treatments (P < 0.0001), resulting decreased intensities acids. We conclude that an effective mitigate GHG emissions facilitate diets management. In field conditions, roughage-lacking represent advantage, especially regarding its administration large amount animals just once week less, need area, infra-structure expertise produce, preserve feeding roughage.
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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/skad068.086