Analysis of growth curves of Guinea fowl (Numida meleagris) fed diets containing dry oregano (origanum vulgare L.) in an organic system [Análisis de curvas de crecimiento de aves de Guinea (Numidea meleagris) con dietas que contienen orégano seco (origanum vulgare L.) en un sistema orgánico]
| Autor: | Eleroğlu H., Yıldırım A., Canikli A., Duman M., Bircan H. |
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| Přispěvatelé: | Eleroğlu, H., Cumhuriyet University, Şarkışla Aşık Veysel Vocational High School, Şarkışla, Sivas, Turkey -- Yıldırım, A., Gaziosmanpaşa University, Agriculture Faculty, Department of Animal Science, Tokat, Turkey -- Canikli, A., Gaziosmanpaşa University, Agriculture Faculty, Department of Animal Science, Tokat, Turkey -- Duman, M., Niğde Ömer Halisdemir University, Laboratory Assistant and Veterinary Health Department, Bor Vocational High School, Niğde, Turkey -- Bircan, H., Cumhuriyet University, Faculty of Economics and Administrator Sciences, Business Department, Sivas, Turkey, 0-Belirlenecek |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Popis: | In this study, 240 day-old guinea fowl (Numida meleagris) keets were utilized. They were divided into four treatment groups each containing 20 chicks and were randomly distributed into 12 mobile coops placed in a 100-m2 grazing area. Guinea fowl chicks were randomly allocated to 4 treatment diets containing 0%, 5%, 10%, and 15% dry oregano leaf (DOL) supplements. Nonlinear Gompertz and logistic growth models were used to estimate the mean age-body weight. The growth curve parameters for these models and the following characteristics for fowl were estimated: ß0, the asymptotic weight parameter; ß1, the scaling parameter; ß2, the instantaneous per week growth rate; weight at age of inflection point (WIP); maximum weight gain at inflection point (MWG); and age at the inflection point (AIP). The goodness of fit (GF) for the models was assessed using the following variables: coefficients of determination (r2), mean square error (MSE), adjusted determination coefficient (ADR2), Akaike’s information criteria (AIC), chi-square test (Chi.Sq2) and residual standard deviation (RSD). The different nonlinear function results of the individual data indicated that supplementation of diets with DOL had no significant effects on growth curve parameters when compared with the control diet. Greater correlation values were estimated among ß0, ß1, ß2, WIP, MWG and AIP in the Gompertz equation, and similar results were estimated in the logistic equation, but there was no significant correlation between ß2-ß1 and ß2-MWG. According to the results obtained from the GF, high r2 and ADR2 were estimated in Gompertz and logistic equations (above 0.96). © 2018, Pontificia Universidad Catolica de Chile, Facultad de Agronomia e Ingenieria Forestal. All rights reserved. This study was supported by the Research Fund of Cumhuriyet University (Project No: ENF–006). |
| Databáze: | OpenAIRE |
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