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Common vetch (Vicia sativa L.) is used for grain, hay or green manure in the semi-arid regions of Turkey. The objective of this study was to determine the seed yields and biochemical compounds of seeds for common vetch lines grown under rain-fed conditions in semi-arid regions of Turkey. Four common vetch lines (845, 2640, 1448 and 384) were obtained from the international center for agricultural research in dry areas (ICARDA). Field experiments were designed according to randomized block design with three replications during 2004/05 and 2005/06. Seed yields, crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF), crude fat (CF) and amino acid (aa) contents of common vetch lines were determined. Seed yields ranged from 1160 - 1459 kg.ha-1, CP content ranged from 24.94 - 27.86%, ADF content ranged from 5.81 - 8.45%, NDF ranged from 9.89 - 11.42% and CF content ranged from 1.16 - 3.23% based on the averages of the two years results.
Key words: Common vetch, crude protein content, acid detergent fiber content, amino acid.