Inclusão de sorgo em rações para frangos de corte de linhagem caipira na Amazônia Ocidental. Inclusion of sorghum in feeds for chicken crop of caipira line in the Western Amazon.
This study aimed to evaluate growth curves of broilers (pedres caipiria lineage) fed sorghum (40% replacement for corn) in a basal ration, in the rearing period from 1 to 70 days. Weight and average consumption accumulated over time were analyzed with the following regression functions: Gompertz and Logistic, on four different models for residual variance. The results showed that the logistic model (with exponential-type variance) had the lowest values for the AIC and BIC, in addition to fitting well to the data. The models that used the Gompertz function presented several problems related to the basic assumptions.
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