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ARS Home » Midwest Area » Ames, Iowa » National Animal Disease Center » Ruminant Diseases and Immunology Research » Research » Publications at this Location » Publication #118586
Title: THE USE OF SOLANUM GLAUCOPHYLLUM TO IMPROVE PHOSPHORUS UTILIZATION IN BROILERS

Author
item CHENG, Y-H - IOWA STATE UNIV., AMES
item GOFF, JESSE
item GILL, S - CAE, BUENOS AIRES, SA
item PAWLAK, E - CAE, BUENOS AIRES, SA
item DALLORSO, M - UNIV LOMAS ZAMORA, SA
item HORST, RONALD

Submitted to: Vitamin D Workshop Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 5/28/2000
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: The availability of dietary phosphorus can be improved by adding 1,25- dihydroxyvitamin D3 to the diets of broilers. The following experiments were conducted to determine if Solanum glaucophyllum (Sg), a plant containing a glycoside of 1,25-dihydroxyvitamin D3, could be used as a substitute for 1,25-dihydroxyvitamin D3 in corn/soybean meal-based diets to improve phosphorus utilization. The basal diet contained 0.6% calcium, 0.5% total phosphorus (0.2% available phosphorus) and adequate vitamin D3. Each treatment was fed to 6 replicate groups of 8 chicks each (total of 48 chicks/group) beginning at 8 days of age and continuing until 28 days of age. The treatment diets included the basal diet or basal diet supplemented with either 1,25-dihydroxyvitamin D3 (15 ug/kg) or Sg (1.0, 2.5, or 5.0 g/kg diet) and the normal diet (1% calcium and 0.7% total phosphorus. Compared to the basal diet response, plasma phosphorus increased in a dose-dependent manner with the addition of Sg. Weight gain and tibia ash were significantly elevated in those animals fed the normal diet as well as those supplemented with 1,25-dihydroxyvitamin D3 or 5 g/kg diet of Sg when compared to the chicks fed the basal diet. Bone density and bone calcium concentrations were elevated by all Sg treatments, but not to the level of the 1,25-dihydroxyvitamin D3 and normal diet groups. The results indicated that Sg could be used as a source of 1,25- dihydroxyvitamin D3 for improving phosphorus utilization in chicks. Efforts are being made to identify the glycosides and to determine their relative biological activity in chicks and other species.