ArticleTropical animal health and production2026
Effects of a slow-release nutritional bolus on growth performance, oxidative status, and carcass traits in fattening Holstein bulls.
Article in Tropical animal health and production, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study investigated the effects of a commercial slow-release bolus supplement ("Dietevit™ Tonic") on growth performance, carcass characteristics, and oxidative stress biomarkers in fattening Holstein bulls. Twenty-four Holstein bulls (443.34 ± 25.47 kg) were randomly allocated into control and treatment groups (n = 12/group) and were fed the same basal ration under commercial farm conditions. Animals in the treatment group received a single oral bolus administration at the beginning of the trial. Body measurements, body weight, salivary oxidative stress biomarkers, and slaughter characteristics were evaluated during the 121-day trial period. On day 121, body weight, chest circumference, and chest depth were significantly higher in the bolus-treated group compared with the control group (P < 0.05). Antioxidant enzyme activities (SOD, CAT, and GPx) were significantly increased, whereas MDA and IMA concentrations were significantly decreased in the treatment group (P < 0.001). was higher in the supplemented group (61.76%) than in the control group (58.92%). The findings suggest that Dietevit™ Tonic bolus supplementation may improve growth performance, carcass characteristics, antioxidant status, and welfare-related parameters in fattening Holstein bulls under commercial production conditions.
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