Effect of dietary nutrient level on the growth and feed utilization of Mugilogobius chulae
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    Abstract:

    Objective To preliminary study nutrition requirement of Mugilogobius chulae in the transitional period and provide reference data for the research and development of compound feed and relevant standards. Methods Artemia (Artemia nauplii, CK) and 7 commercial compound feeds (P30L8, P35L8, P50L8, P55L8; P50L12, P53L12, P55L12) were used to feed goby in transitional period. At the end of 8 weeks growing experiment, some data like survival rate (SR), weight gain (WG) and specific growth rate (SGR) and so on were measured. While, 8 groups' body compositions were also measured. Results SR Treatment groups (51.78±8.98~68.22±4.95) and CK (58.22±6.51) have no significant different (P > 0.05). WG Treatment groups except P30L8 (130.76±23.67) and P50L12 (220.86±16.9) were significant larger than CK (206±41.91, P < 0.05). Using equal lipid (8% and 12%) dietary, WG increased with protein level rising.SGR Treatment groups' SGR also increased with protein levels rised.FR, FCR P50L8, P55L8; P50L12, P53L12, P55L12's FR and FCR were better than group CK (P < 0.05). Using equal lipid (8%) dietary, FR and FCR were decreased with protein level rised. In addition, different feed feeding group's body composition showed no significant difference (P < 0.05). Conclusions Rear goby with compound feed replace the living food was viable and supported appreciable growth. Their crude protein and lipid have no effect to the goby's body composition (P < 0.05). Dietary with crude protein 50% and crude lipid 8% could obtain a better growth in transitional period.

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History
  • Received:
  • Revised:December 25,2015
  • Adopted:
  • Online: January 28,2016
  • Published: