Abstract
Fatty acid profiles of midgut gland (MG), ovary and eggs of Macrobrachium rosenbergii of wild and farm reared brooders indicate a significant variation of their components during the sexual maturation and spawning. In both groups, major fatty acids found in the chosen tissues were 14:0, 16:0, 18:0, 18:1n-9, 18:2n-6, 18:3n-3, 20:4n-6, 20:5n-3 and 22:6n-3. Of these, saturated fatty acids dominate over the mono-unsaturated (MUFA), polyunsaturated (PUFA) and highly unsaturated fatty acids (HUFA). Though all the four groups of fatty acids are found in both groups except n-3 HUFA (P>0.05) other categories are found in higher wild brooders (P<0.05). There was a significant difference in total weight, total length and clutch weight (P<0.05) between farm and wild brooders, but the gonadosomatic index (GSI) and midgut gland somatic index (MSI) did not vary significantly (P>0.05). Key words: Fatty acids profile, morphometry, Macrobrachium rosenbergii, wild and farm brooders.  
Highlights
A thorough knowledge on the physiology, metabolism and biochemistry of commercially important species during maturation is essential for a complete understanding of its reproductive processes for hatchery operation (Mourente et al, 1994); reproductive control of a cultured species is importance only next to its consumer demand (Bardach et al, 1972)
The present study aims to find out the variations in the chosen morphometry and biochemical profiles of brooders collected from two different farms are the main suppliers for hatcheries with the wild brooders to find out the differences in brood quality between wild and farm reared M. rosenbergii as a measure of brood quality assessment
There were no significant differences found in gonadosomatic index (GSI) and midgut gland somatic index (MSI) of the brooders between wild and farms but total wet weight, total length and clutch weight varied significantly (P
Summary
A thorough knowledge on the physiology, metabolism and biochemistry of commercially important species during maturation is essential for a complete understanding of its reproductive processes for hatchery operation (Mourente et al, 1994); reproductive control of a cultured species is importance only next to its consumer demand (Bardach et al, 1972). Understanding the interaction between nutrition and reproduction, quantification of the nutrient requirement is essential to promote successful maturation and spawning which in turn enable year round hatchery seed production (Harrison, 1997). In this regard, fatty acids of n-6 and n-3 series play a vital role in the reproductive performance of crustaceans. The FAME were identified and quantified by comparison of peak area and retention time of standard fatty acids The biometric variables such as total weight, total length, gonadosomatic index (GSI), midgut gland somatic index (MSI), clutch weight and selected tissue biochemical composition of M. rosenbergii brooders of wild and farms are analyzed through oneway analysis of variance (ANOVA).
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