Non-Linear Models for Growth Curves in Large White Turkeys

The present work aimed to model the growth curves of male and female turkeys with respect to their live weight-age relationships and to determine a non-linear model explaining their growth curve better. For this purpose four different non-linear models were used to define growth curves of turkeys, namely Gompertz, Logistic, Morgan-Mercer-Flodin (MMF), and Richards. The coefficients of determination for these models were 0.9975, 0.9937, 0.9993, and 0.9966 for females and 0.9974, 0.9933, 0.9993, and 0.9969 for males, respectively. Considering model selection criteria, Gompertz, Logistic and Richards models seen to be suitable models for explaining Large White turkey growth.

Anahtar Kelimeler:

Large White turkeys, growth curves, non-linear models

Non-Linear Models for Growth Curves in Large White Turkeys

Keywords:

Large White turkeys, growth curves, non-linear models,

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Lilja, C.A.: Comparative study of postnatal growth and organ development in some species of birds. Growth, 1983; 47: 317- 339. 2. Ricklefs R.E.: Modification of growth and development of muscles of poultry. Poult. Sci., 1985; 64: 1563-1576.
Ware, G.O., Phillips, R.D., Parrish, R.S., Moon, L.C.: A comparison of two nonlinear models for describing intake- response relationships in higher organism. J. Nutr., 1980; 100: 765-770.
White, G.C., Brisbin I.L.Jr.: Estimation and comparison of parameters in stochlastic growth models for barn owls. Growth., 1980; 44: 97-111.
Grossman M., Bohren, B.B.: Logistic growth curve of chickens: heritability of parameters. J. Hered., 1985; 76: 459-462.
Grossman, M., Bohren, B.B., Anderson, V.L.: Logistic growth curve of chickens: A comparison of techniques to estimate parameters. J. Hered., 1985; 76: 397-399.
Brisbin, I.L., White, G.C., Bush, P.B., Mayack, L.A.: Sigmoid growth analyses of wood ducks: the effects of sex, dietary protein and cadmium on parameters of the Richards model. Growth, 1986; 50: 41-50.
Stephan, R.R., Pesti, G.M., Marks, H.L.: Comparison of three nonlinear regression models for describing broiler growth curves. Growth, 1987; 51: 229-239.
Anthony, N.B., Emmerson, D.A., Nestor, K.E., Bacon, W.L., Siegel, P.B., Dunnington, E.A.: Comparison of growth curves of weight selected populations of turkeys, quails and chickens. Poult. Sci., 1991; 70: 13-19.
Knizetova, H., Hyanek, J., Knize, B., Roubicek, J.: Analysis of growth curves of fowl. I. Chickens. Brit. Poultry. Sci., 1991; 32: 1027-1038.
Knizetova, H., Hyanek, J., Knize, B., Prochatzova, H.: Analysis of growth curves of fowl. II. Ducks. Brit. Poultry. Sci., 1991; 32: 1039-1053.
Knizetova, H., Hyanek, J., Veselsky, A.: Analysis of growth curves of fowl. III. Geese. Brit. Poultry. Sci., 1994; 35: 335-344.
Knizetova, H., Hyanek, J., Hyankova, L., Belicek, P.: Comparative study of growth curves in poultry. Genet. Sel. Evol., 1995; 27: 365-375.
Marks, H.L.: Growth curve changes associated with long term selection for body weight in Japanese quail. Growth, 1987; 42: 129-140.
Barbato, G.F.: Genetic architecture of growth curve parameters in chickens. Theor. Appl. Genet., 1991; 83: 24-32.
Mignon-Grasteau, S., Beaumont, C., Le Bihan-Duval, E., Poivey, J.P., de Rochambeau, H., Ricard, F.H.: Genetic parameters of growth curve parameters in male and female chickens. Brit. Poultry. Sci., 1999; 40: 44-51.
Mignon-Grasteau, S., Piles, M.; Varona, L., Poivey, J.P., de Rochambeau, H.; Blasco, A., Beaumont, C.: Genetic analysis of growth curve parameters for male and female chickens resulting from selection on shape of growth curve. J. Anim. Sci., 2000; 78: 2515-2524.
Akbafl, Y., Oğuz, İ.: Growth curve parameters of lines of Japanese quail (Coturnix coturnix japonica), unselected and selected for four-week body weight. Arch. Geflugelkd., 1998; 21: 104-109.
Akbafl Y., Yaylak, E.: Heritability estimates of growth curve parameters and genetic correlations between the growth curve parameters and weights at different age of Japanese quail. Arch. Geflugelk., 2000; 64: 141-146.
Marquardt, D.W.: An algorithm for least-squares estimation of non-linear parameters. J. Soc. Ind. App. Math., 1963; 11: 431- 441.
Douglas, M.B., Donald W.G.: Nonlinear regression analysis and its applications. John Wiley & Sons Inc. Canada. 1988.
Yakupoğlu, C., Atıl, H.: Comparison of growth curve models on broilers growth curve II. Comparison of models. Online J. Biol. Sci., 2000; 1: 682-684.
Brown, J.E., Fitzhugh, H.A.; Cartwright, T.C.: A comparison of nonlinear models for describing weight age relationships in cattle. J. Anim. Sci., 1976; 42: 810.
Barbato, F., Vasilatos-Younken, R.: Sex-linked and maternal effects on growth in chickens. Poult. Sci., 1991; 70: 709-718.
Du Preez, J.J., Sales, J.: Growth rate of different sexes of the European quail (Coturnix coturnix). Brit. Poultry. Sci., 1997; 38: 314-315.