| Full text | |
| Author(s): |
Pereira, Marcelo Maia
[1]
;
Menegasso Mansano, Cleber Fernando
[1]
;
da Silva, Edney Pereira
[2]
;
De Stefani, Marta Verardino
[2]
Total Authors: 4
|
| Affiliation: | [1] Univ Estadual Paulista, UNESP, Ctr Aquicultura, BR-14884900 Jaboticabal, SP - Brazil
[2] Univ Estadual Paulista, UNESP, Dept Zootecnia, BR-14884900 Jaboticabal, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Ciência e Agrotecnologia; v. 38, n. 6, p. 598-606, NOV-DEC 2014. |
| Web of Science Citations: | 2 |
| Abstract | |
Knowledge of the growth of animals is important so that zootechnical activity can be more accurate and sustainable. The objective of this study was to describe the live weight, development of liver tissue and fat body, leg growth, and cumulative food intake of bullfrogs during the fattening phase using nonlinear models. A total of 2,375 bullfrog froglets with an initial weight of 7.03 ± 0.16 g were housed in five fattening pens (12 m²). Ten samplings were performed at intervals of 14 days to obtain the variables studied. These data were used to estimate the parameters of Gompertz and logistic models as a function of time. The estimated values of weight (Wm) and food intake (FIm) at maturity and time when the growth rate is maximum (t*) were closer to expected values when the logistic model was used. The Wm values for live weight and liver, adipose and leg weights and the FIm value for food intake were 343.7, 15.7, 19.6, 96.03 and 369.3 g, respectively, with t* at 109, 98, 105, 109 and 107 days. Therefore, the logistic model was the best model to estimate the growth and food intake of bullfrogs during the fattening phase. (AU) | |
| FAPESP's process: | 11/50865-2 - Models of body growth and nutrient deposition in the carcass of the bullfrog in aquatic and terrestrial stages |
| Grantee: | Marta Verardino de Stéfani |
| Support Opportunities: | Regular Research Grants |