|
| Construction of Growth Model for Mandarin Fish(Siniperca chuatsi) Guangqing No.1 fed withCompound Diet and cultivated in Pond |
| |
| DOI：10.16768/j.issn.1004-874X.2022.05.015 |
|
| Hits: 1023 |
| Download times: 695 |
| Abstract: |
| 【Objective】The study was conducted to understand the growth and development law of Siniperca
chuatsi Guangqing No.1 (hereinafter called mandarin fish) fed with compound diet and cultivated in pond so as to provide
references for the breeding and large-scale culture of mandarin fish.【Method】The morphological parameters and
growth performance of mandarin fish fed with compound diet at different month-ages in a whole cultivation period were measured. Three nonlinear models, Logistic, Gompertz and Bertalanffy, were used to construct the growth curves of both body
mass and body length of the mandarin fish. 【Result】The maximum absolute body weight gain and absolute body length
gain were found at 5-month-age fish, and 3-month-age fish, respectively. While the relative body weight gain and body
length gain began to decrease from 4 months age. Morphological parameters, including condition factor (CF), viscerosomatic
index (VSI) and mesenteric fat index (MFI) increased while hepatosomatic index (HIS) and intestine & stomach index (ISI)
decreased as the fish month ages increased. The three models could simulate the growth curve of mandarin fish well, with
a degree of fit R2 ≥ 0.97. Correlation analysis between the model predicted value and the measured value showed that
the Logistic model was better than the other two models. The growth models for body mass and both length were as follows
respectively, Wt
=1230.808/(1+39.666e-0.760t), R2
=0.989; Lt
=40.871/(1+3.076e-0.387t), R2
=0.990. The growth inflection point
for body mass was at 4.843 months, corresponding to body mass and both length of 615.404 g and 20.436 cm, respectively.
【Conclusion】Logistic model is more suitable to describe the growth process of mandarin fish, and it can predict the growth
data of different stages, which will provide theoretical basis for further breeding and large-scale culture of mandarin fish fed
with compound diet. |
|
View Full Text
View/Add Comment Download reader |
|
|
|
