The succes of feeding operations on fish and shirmp is reflected in overall productivity and cost effectiveness. Fish growth will be affected by a few factors such as water quality, feed quality, fish quality etc. Fish growth performances can be measure using a few formulae:
Specific growth rate (SGR)= [(In final weight (g) – In initial weight)/Time(Days)]*100
Feed conversion ratio (FCR)= (feed consumed/weight gain)
Protein efficiency ratio (PER)=(wet weight gain/Protein consumed)
Daily Intake Rates (DIR)=([feed intake /mean weight]/no days)*100
Protein Productive Value (PPV)=(retained protein/ingested protein)*100
Feed Efficiency Ratio(FER)=(wet weight gain/total food consumption)
Condition Factor (CF)=(body weight / total length3)*100
Hepatosomatic Index (HI)=(liver weight /body weight)*100
Mesenteric Fat Index (MFI)=(mesenteric fat weight /body weight)*100
Productive Energy Value (PEV)=(fish energy gain (g MJ)/total energy consumed (g MJ))*100
2 comments:
how to calculate using those formula?cn u gv some of d algorithm? =) saja jak bah..general knowledge..hehe!
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