Effects of Weaning Intensity on Weaning Effects and Growth of Juvenile Elopichthys bambusa

doi:10.11924/j.issn.1000-6850.2014-1690

Abstract

Abstract: The present study aimed to investigate the effect of weaning intensity on the weaning success rate (WSR, %), cannibalism rate (CR, %), mortality rate (MR, %), and growth of juvenile Elopichthys bambusa. Six triplicate groups were assigned in the net cages (1.0×1.0×1.0 m³) with different weaning intensity of 1.0 h（S1）、1.5 h(S2)、2.0 h(S3)、2.5 h(S4)、3.0 h(S5)and 4.0 h(S6) twice a day. The experiment was carried out for 28 days .The results showed that WSR increased remarkably and then decreased with the strengthening of weaning intensity(P<0.05), total CR decreased remarkably with the strengthening of weaning intensity(P<0.05). Total MR decreased initially and then increased slightly with the strengthening of weaning intensity. At the end of the experiment, specific growth rate of body weight (SGR_BW, %), specific growth rate of total length (SGR_TL, %) and condition factor (CF, %) increased remarkably with the strengthening of weaning intensity(P<0.05). The variation coefficient of body weight (CV_BW, %) decreased remarkably with the strengthening of weaning intensit(P<0.05). In conclusion, under this experimental condition, the best weaning intensity for Elopichthys bambusa was weaning three hours each time.

Wang Kunpeng,,Fan Qixue,Zhao Zhongbo,Liu Rupeng,He Hui and Hu Peipei. Effects of Weaning Intensity on Weaning Effects and Growth of Juvenile Elopichthys bambusa[J]. Chinese Agricultural Science Bulletin, 2015, 31(2): 85-90.

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