Cestrum diurnum leaf as a source of 1,25(OH)2 Vitamin D3 improves egg shell thickness

The Journal of Steroid Biochemistry and Molecular Biology
S ChennaiahN Raghuramulu

Abstract

A continuing concern of the poultry industry is the high incidence (12%) of egg losses in the laying house due to poor egg shell quality. Calcium (Ca) homeostasis is a key factor in egg shell formation. The economy of Ca utilisation is under the control of Vitamin D(3), particularly its active metabolite 1,25-dihydroxy cholecalciferol [1,25(OH)(2)D(3)]. Supplementation of 1,25(OH)(2)D(3) has been shown to increase specific gravity, shell thickness and shell weight of the egg. However, commercially available synthetic 1,25(OH)(2)D(3) is very expensive. Earlier studies from our Institute [Phytochemistry 37 (1994) 677] have identified a cheap, natural and rich source of 1,25(OH)(2)D(3) in the leaves of Cestrum diurnum (CD), a member of the Solanaceae family. In this study, CD leaves were explored as a source of 1,25(OH)(2)D(3) in the feed of layer birds to improve the egg shell thickness. Fifteen-week-old white leghorn layers were divided into four treatments of 60 birds each and as follows: (I) normal diet with Vitamin D(3), (II) normal diet with Vitamin D(3) + CD, (III) normal diet without Vitamin D(3) and, (IV) normal diet without Vitamin D(3) + CD powder. CD leaf powder was incorporated in to the feed at 0.3% level. The experi...Continue Reading

Citations

Mar 21, 2007·The Journal of Steroid Biochemistry and Molecular Biology·S ChennaiahN Raghuramulu
May 28, 2011·International Journal of Food Sciences and Nutrition·Shrawan SinghR C Srivastava
Dec 3, 2014·The Journal of Steroid Biochemistry and Molecular Biology·Julia KühnGabriele I Stangl

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