National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An experiment was conducted on 250 day old broiler chicks to investigate the effect of replacing cholecalciferol (CC) (1800 ICU/kg diet) (diet 1) with plant derived 1, 25 (OH)2 D3, (PD metabolite) at 25, 50, 75 and 100% (diet 2 to 5, respectively) on performance, bone mineralization and Calcium (Ca) and Phosphorus (P) retention in broiler chicken (0 to 42 d of age) fed diets containing suboptimal levels of Ca and non phytate P (NPP) (0.7% Ca and 0.35% NPP during starter and 0.7% Ca and 0.35% NPP during finisher). The chicks were randomly allotted to 50 replicates, which were in turn allotted to above 5 diets. Each diet was offered ad libitum and all birds were reared under uniform conditions. During starter, finisher phases and for all overall period body weight gains, feed intake and feed conversion ratio were comparable among the all dietary treatments. Serum Ca and inorganic P levels estimated from blood collected on 35th d were comparable among the treatments. Bone weight, strength, ash percentage, Ca and P contents in bone ash were significantly (P<0.05) improved by replacing synthetic CC with PD metabolite but level of replacement (25, 50, 75 or 100%) had no significant effect. Similarly, P retention improved (P<0.05) with dietary incorporation of PD metabolite but was independent to level of replacement, while Ca retention was comparable among the dietary treatments. The results of the study indicated that supplementing plant derived 1, 25 (OH)2 D3 (45, 90, 135 or 180 ICU/kg) significantly improved bone weight, strength, ash percentage, Ca and P contents in broiler chicken fed on suboptimal levels of Ca and NPP.
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