effects of increasing daily feeding frequency on performance of broiler breeder hens

this experiment was conducted to determine the effects of either twice or thrice a day feeding regimens on performance and as well on plasma hormone and metabolite levels of broiler breeder hens during 24 to 38 wk of their productive age. breeder pullets were provided form a commercial flock, and distributed in experimental units, in a compeletly randomized design with three feeding regimens (treatments) included 1, 2 or 3 feeding times per day with 4 replicates. birds fed once a day, received all their total feed at 06:15 h, whereas birds fed twice a day, received 50% of their total feed allowance at 06:15 h and the other 50% at 12:15 h, and while birds fed thrice a day, received 33% of their total feed at 06:15 h, 33% at 12:15 h and the last portion at 18:15 h. total daily feed did not differ among treatments. blood samples were taken at the peak of production (32 wk of age) and at the end of trial (38 wk of age). for the 13 wk production period, total hen-day egg production through 38 wk of age in the hens that were provided feed twice and thrice a day was greater (67.1 and 67.2 vs 62.2 eggs/hen, p