The present study was conducted to evaluate the quality characters (Chemical constituents, cell wall contents and nutritive values) of seven promised Egyptian clover (berseem) genotypes comparing with five chick cultivars. A field trial was carried out at Sids research station in (2012/13 and 2013/14) seasons. The twelve genotypes were sown in a randomized complete block design with four replicates. The chemical constituent noted highly significant differences among genotypes in organic matter % which ranged from 85.51% (Gemmiza) to 86.41% (Hatour) with mean average 85.99%. Composite (Hatour + New Hatour) genotype recorded the highest content of crude protein (18.91%) whereas Serw-1 had the lowest value (16.06%). Meanwhile Serw-1 recorded the highest non-fiber carbohydrates% (41.62%) followed by Narmer (41.28%) while, Gemmiza recorded the lowest value (39.13%) with mean average 40.21% over all genotypes. The average mean of crude fiber, ash and ether extraction percentages recorded 25.26, 14.00% and 2.80%, respectively. Wide variation was recorded for the values of cell wall content; acid detergent fiber% values were ranged from 23.09 to 26.12% with mean average of 24.42% across all genotypes. Also, nutrient detergent fiber% ranged from 32.00 to 39.12 % with mean average of 34.53 % and ADL % ranged from 5.11 to 5.72 % with mean average of 5.32% across all genotypes. Moreover highly significant differences were noted in the nutritive value, crude protein yield ranged from 1.47 to 1.84 t fad-1 and digestible crude protein% which ranged from 11.40 to 14.05% and also total digestible nutrients % ranged from 68.27 to 71.54% with mean average 69.82%. Khadarawy and Composite (H+N) had the superior dry yield (9.97 and 9.72 t fad-1). Also, Composite (H+N) recorded the highest crude protein% and crude protein yield (t fad-1), while Gemmiza genotype had the lowest values in dry yield, organic matter%, neutral detergent soluble %, soluble fiber%, digestible dry matter %, dry matter intake %, total digestible nutrients %, relative feed value % and relative forage quality %. Acid detergent fiber showed significant positive correlation, nutrient detergent fiber and acid detergent fiber, (r = 0.855** and r = 0.760**, respectively), whereas it was correlated significantly and negatively with neutral detergent soluble, soluble fiber, total digestible nutrients, relative feed value and relative forage quality %. Nutrient detergent fiber was a significantly and negatively correlated with all the other contents except acid detergent fiber% which showed significant positive relation (r = 0.721**). Hatour and Narmer genotypes performed the higher percentages of total digestible nutrients % across all studied genotypes. Key words: Berseem, Egyptian clover, chemical constituent, cell wall content and nutritive value, correlation.
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