Comparison of Growth Curve in Male Layer Chickens

Authors : Widya PBPİNTAKA BAYU PUTRA, Roshan RİAZ, Andrean Amar GUNAWAN, Abdülkadir ORMAN

Pages : 49-53

Doi:10.30782/jrvm.779699

View : 19 | Download : 15

Publication Date : 2021-08-19

Article Type : Research Paper

Abstract :This study was aimed to obtain the growth curve of body weight in male layer chickens insert ignore into journalissuearticles values(Lohman MB 202); based on Logistic and Gompertz models. The frequently data of body weight from one day age to adult age were used for growth curve prediction. Total of one thousand birds from private sector poultry farm in Tasikmalaya Regency, Indonesia were used in this study as the data source. The growth curve estimation was calculated based on Logistic insert ignore into journalissuearticles values(L); and Gompertz insert ignore into journalissuearticles values(G); models using Curve Expert 1.4. computer program.The final weight insert ignore into journalissuearticles values(asymptote); in birds was reached of 1111.27 g insert ignore into journalissuearticles values(L); and 1685.13 g insert ignore into journalissuearticles values(G);. Therefore, the weight of inflectioninsert ignore into journalissuearticles values(Wi); of birds were reached of 555.64 g insert ignore into journalissuearticles values(L); and 619.53 g insert ignore into journalissuearticles values(G);. The time of inflection insert ignore into journalissuearticles values(ti); and maximum growth rate insert ignore into journalissuearticles values(GR); of birds in both models were ±6 months and ±19 g/week respectively.In result, both models had similar of coefficient of determination insert ignore into journalissuearticles values(R2); value. However,the growth curve of Gompertz insert ignore into journalissuearticles values(G); model was confirmed as the best growth curve for body weight of birds in this study because of lower of standard error insert ignore into journalissuearticles values(SE); value.
Keywords : Body weight, growth curve, inflection, male layer