Prediction of dry matter intake by meat sheep on tropical pastures

This study was undertaken to determine whether equations for prediction of dry matter intake (DMI) by meat sheep are valid for animals raised solely on tropical pastures and to propose a new equation to predict the DMI of sheep raised on tropical pastures. The DMI prediction from published equations...

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Bibliographic Details
Published in:Tropical animal health and production 2021-11, Vol.53 (5), p.479-479, Article 479
Main Authors: Gurgel, Antonio Leandro Chaves, dos Santos Difante, Gelson, Neto, João Virgínio Emerenciano, Santana, Juliana Caroline Santos, Fernandes, Patrick Bezerra, dos Santos, Geraldo Tadeu, Dias, Alexandre Menezes, Ítavo, Luís Carlos Vinhas, Ítavo, Camila Celeste Brandão Ferreira, de Medeiros, Henrique Rocha
Format: Article
Language:English
Subjects:
Adequacy
Biomedical and Life Sciences
Chemical composition
Dry matter
Grazing
Hypotheses
Life Sciences
Meat
Null hypothesis
Pasture
Pastures
Predictions
Regular Articles
Sheep
Veterinary Medicine/Veterinary Science
Zoology
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Summary:This study was undertaken to determine whether equations for prediction of dry matter intake (DMI) by meat sheep are valid for animals raised solely on tropical pastures and to propose a new equation to predict the DMI of sheep raised on tropical pastures. The DMI prediction from published equations was evaluated by regressing the predicted and observed values, using the F test, for the identity of the parameters (β0 = 0 and β1 = 1) of the regression of predicted on observed data. If the null hypothesis is not rejected, the tested equation accurately estimates DMI. The proposed equation was evaluated in the same way as the published equations. The animal performance and pasture structure and chemical composition data used originated from an experiment conducted with 32 Santa Inês sheep raised on tropical pastures. In the analysis of model adequacy, the null hypothesis was rejected ( P  
ISSN:0049-4747
1573-7438
DOI:10.1007/s11250-021-02916-8