Publications by authors named "Vaughn B Holder"
Relationship between different sources of non-protein nitrogen and supplementation times on performance and metabolism of grazing Nellore cattle during the dry season.
Verônica A C Mota Laura F Prados Keuven S Nascimento Rodolfo M Fernandes Luiz F Costa E Silva Vaughn B Holder
Trop Anim Health Prod
November 2022
Article Synopsis
- Two experiments evaluated the impact of different non-protein nitrogen sources and feeding times on growth and behavior in Nellore bulls during the dry season.
- In Experiment 1, 120 bulls were assessed for performance and behavior in randomized paddocks with no significant effects from the supplement type or feeding times.
- Experiment 2 involved 12 cannulated bulls that showed variations in ruminal pH and short-chain fatty acids based on supplementation time, but not on overall growth or ingestive behavior.
- The study concluded that neither non-protein nitrogen sources nor feeding times significantly influenced the bulls' performance or behavior.
This experiment was conducted to determine the effects of slow release urea (SRU) and its interaction with crude protein (CP) level in the diet on N metabolism in Holstein steers. Eight rumen-cannulated Holstein steers (body weight 265 ± 18 kg) were used in a replicated 4 × 4 Latin square design with a 2 × 2 factorial treatment structure. Treatment factors were the CP level in the diet, 10.
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