Publications by authors named "Flavio Menezes"
Pasture-based beef cattle production systems aim to maximize the interaction between forage and supplements to increase activity. In addition, supplementation and the use of food additives help optimize production efficiency and improve the use of additional nutrients. The aim of this study was to evaluate the effects of the use of additives in protein-energy supplements (PESs) on the intake, digestibility, and ruminal parameters of beef cattle raised on pasture in the rearing phase.
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- - The study evaluated different nonlinear mixed models for analyzing the growth curves of meat-type quails based on gender, using over 30,000 records of males and females.
- - Various nonlinear models (such as Brody, Gompertz, and others) were applied, with the Morgan-Mercer-Flodin model emerging as the best fit due to its accurate prediction of asymptotic weight when modeled as a random effect.
- - Findings suggest that male quails grow at a slower rate than females, indicating that they should be slaughtered later, which could enhance meat quality and improve genetic characteristics over time.
Body weight records were used to characterize the growth curve of Nelore cattle. Body weight was regressed as a function of age, for both sexes, by using nonlinear models through the functions of Brody, Gompertz, Logistic, Richards, Meloun 1, Von Bertalanffy, and Von Bertalanffy. The quality of the model arrangements was evaluated by employing Akaike and Bayesian Schwarz information criteria.
View Article and Find Full Text PDFDuring the COVID-19 pandemic, policymakers needed to assess the impact of large monetary and fiscal policy interventions in as close to real time as possible-yet existing survey-based indicators are usually released monthly or quarterly. The use of high-frequency data to track economic activity has become widespread. This paper constructs a near real-time economic activity indicator for the Brazilian economy during the COVID-19 pandemic.
View Article and Find Full Text PDFBackground: COVID-19 reached Latin-American countries slightly later than European countries, around February/March, allowing some emergency preparedness response in countries characterized by low health system capacities and socioeconomic disparities.
Objective: This paper focuses on the first months of the pandemic in five Latin American countries: Brazil, Chile, Colombia, Ecuador and Peru. It analyses how the pre-pandemic context, and the government's responses to contain and mitigate the spread together with economic measures have affected the COVID-19 health outcomes.