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:: دوره 7، شماره 1 - ( 1399 ) ::
جلد 7 شماره 1 صفحات 91-104 برگشت به فهرست نسخه ها
Optimum dietary protein requirement of Paradise fish, Macropodus opercularis based on growth and reproduction performances
چکیده:   (615 مشاهده)
The aim of this study was to assess the effects of dietary protein levels on growth and reproduction performance of paradise fish, Macropodus opercularis. A total of 540 fish (0.5±0.01 g) was offered one of six experimental diet comprising different protein levels (i.e., 25, 30, 35, 40, 45 and 50 %). Diet of 40 % crude protein produced significantly higher mean weight gain, daily growth rate, and specific growth rate and feed conversion ratio (p≤0.01). The analysis made based on the second order polynomial regression curve (R2=0.79), revealed that optimum protein levels based on fish SGR and FCR were 40 and 45 %, respectively. The average total egg production increased with increasing dietary protein levels up to 45 %. There was no significant difference in the egg diameter among groups, but egg hatchability was significantly higher (96%±2) in the fish fed diet containing 45% protein. The highest and lowest GSI was obtained in the 45 and 25% dietary protein, respectively. Fecundity was highest in the fish fed diet containing 45% (107.4±12.1) and followed by 50 (91.4±8.5) and 40 (68.5±2.6) % dietary protein. There were no significant effects of dietary protein level on egg biochemical composition and amino acid profile. The results suggest optimum dietary protein levels of 40 and 45 % for maximum growth and reproduction performance in paradise fish, respectively.
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نوع مطالعه: پژوهشي | موضوع مقاله: Ecology and Stock assessment
دریافت: 1399/5/14 | پذیرش: 1399/4/30 | انتشار: 1399/4/30
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Dadgar S, Ghaedi A, Hafezieh M, Zargham D. Optimum dietary protein requirement of Paradise fish, Macropodus opercularis based on growth and reproduction performances. Survey in Fisheries Sciences. 2020; 7 (1) :91-104
URL: http://sifisheriessciences.com/article-1-170-fa.html

Optimum dietary protein requirement of Paradise fish, Macropodus opercularis based on growth and reproduction performances. Survey in Fisheries Sciences. 1399; 7 (1) :91-104

URL: http://sifisheriessciences.com/article-1-170-fa.html



دوره 7، شماره 1 - ( 1399 ) برگشت به فهرست نسخه ها
Survey in Fisheries Sciences Survey in Fisheries Sciences
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