Growth Patterns of Two Chinese Native Goose Breeds

Abstract

To study the development rules of Chinese native geese, two breeds, Shitou and Sichuan White geese were analyzed from 0 to 12 weeks of age. The growth curves were fitted with commonly used four kinds of nonlinear models (Logistic, Gompertz, Von Bertalanffy and Richards). The results showed that the growth curves were appropriately fitted with all four models but the Logistic and Richards both had the best fitting with growth curve (R 2 >0.99). Analyzing the fitting parameters of the Logistic and Richards, we found that male Shitou had the highest adult body weight while Sichuan White female had the lowest weight. In Shitou breed, Shape parameter Predicted with Richards model was corresponded with Gompertz curve, while in Sichuan breed it was in between Gompertz and Bertalanffy. Growth parameters predicted with Logistic model was much more closed to observed value as compared others. So overall logistic was the best model to analyze the growth curve in Chinese native goose and Shitou goose had excellent growth performance when compared to Sichuan White.

The Growth Curve of Gompertz Model in Body Weight of Mixed-sex Goose Breeds in Slovakia

“…The Wi values in ST geese with similar model were 2338.87 g (male) and 1991.14 g (female). Thus, the Wi values in SW geese with similar model was 1452.15 g (male) and 1164.96 g (female) as reported by Ibtisham et al (2017). In addition, the Wi values in TN geese with similar model were 1856 g (male) and 1538 g (female) as reported by Onder et al (2017).…”

“…The maturing rate (k) in Slovak geese in this study was 0.05 g/day and higher than that of ST geese (0.04 g/day) but was similar to female SW geese (0.05 g/day) with similar model (Ibtisham et al 2017). In addition, the k value in TN geese (0.06 g/day) with similar model (Onder et al 2017) was higher than that in Slovak geese in this study.…”

“…Thus, the asymptotic weight (A) value in studied geese was reached of 5332.51 g (L), 6186.14 g (P) and 5048.27 g (S) as presented in Table 2. With the similar method (Gompertz model), Shi Tou (ST) geese had A values of 6357.71 g (male) and 5412.49 g (female) as reported by Ibtisham et al (2017). Thus, the A value in Sichuan White (SW) geese with similar method was 3947.34 g (male) and 3166.70 g (female) as reported by Ibtisham et al (2017).…”

“…With the similar method (Gompertz model), Shi Tou (ST) geese had A values of 6357.71 g (male) and 5412.49 g (female) as reported by Ibtisham et al (2017). Thus, the A value in Sichuan White (SW) geese with similar method was 3947.34 g (male) and 3166.70 g (female) as reported by Ibtisham et al (2017). Morever, Onder et al (2017) reported that the A value in Turkish native (TN) geese with similar model reached 5044 g (male) and 4179 g (female).…”

“…The records data of body weight (BW) in geese were used to estimate growth curve with non-linear Gompertz model through CurveExpert 1.4. computer program (Hyams, 2010). Thus, the mathematical formula in nonlinear Gompertz model and some growth parameters refering to Ibtisham et al (2017) are as follows:…”