The present experiment was conducted to study the effect of dietary supplementation of sea buckthorn leaf meal (SBTLM) in colored breeder chicken and their post hatch on growth performance in different phases of 0-4, 4-8 and 0-8 weeks during summer season. Ninety colored Chabro breeder hens and eighteen viable cocks in 1:5 sex ratio were randomly distributed into three treatment groups: Control (Basal), standard breeder diet (BB) (BIS, 2007); basal+0.5% and basal+1.0% SBTLM. Thereafter, 90 chicks from each breeder groups were further subdivided into three groups each groups having three replicates of 10 birds. Control (Basal), Broiler starter till 4 weeks, broiler finisher till 8 weeks of age, (BP) (BIS 2007); basal+0.5% supplementation and basal+1.0% supplementation of SBTLM. It was observed that the average body weight gain (g) during 0-4 week and 0-8 weeks were significantly higher (P<0.05) in breeder diet groups BB+0.5% SBTLM and BB+1.0% SBTLM dietary supplemented groups compared to BB.
The weekly body weight gain of 0.5% SBTLM supplemented group during post hatch and obtained from breeders subjected to 0.5% SBTLM supplementation was significantly (P<0.01) higher during 0-4, 4-8 and 0-8 weeks of experimentation. The interaction of (breeder diet ×
post hatch diet) supplementation of sea buckthorn leaf in 4-8 weeks and 0-8 weeks average body weight gain were significantly higher (P<0.01) in (BB+0.5%SBTLM)+(BP+0.5%SBTLM) group compared to BB+BP (1469.60g vs.1277.00g). However, in breeder as well as in post hatch dietary group no significant effect on feed consumption were observed in 0-4, 4-8 and 0-8 week of experimentation. Similarly, no significant effect was observed in interaction groups at 0-8 weeks. It was also observed that the overall FCR (0-8 weeks) were significantly better (P<0.05) in both sea buckthorn leaf meal supplemented groups in breeder diet as well as in post hatch diets while interaction effect for FCR were significantly better (P<0.05) in (BB+0.5% SBTLM)+(BP+0.5% SBTLM) supplemented group as compared to control group during different phases (0-4 weeks and 4-8 weeks) of experimentation. It was also observed that supplementation of 0.5% SBTLM had synergistic effect in improving the FCR of coloured breeder birds. Results of study concluded that dietary supplementation of 0.5% SBTLM in both breeder and post hatch chicks resulted in better growth performance and FCR during the study period.

Keywords: Breeder; Chabro FCR; Post Hatch and SBTLM.