Spirulina platensis AS NUTRITIONAL PROMOT R FOR SEXUAL PUBERTY IN RAHMANY SHEEP

Document Type : Original Article

Authors

1 Agricultural Microbiology Dept National Research Centre, Dokkl, Cairo, Egypt

2 Animal Reproduction Dept National Research Centre, Dokkl, Cairo, Egypt

Abstract

Seven cyanobacteria groups recorded in Wadi-EL-Natrun lakes included five
genera (two Sp < /em>iro/ina, two Oscillatona • one Nostoc, one Ch/om/fa and one ~avicu/s) .
 
Spirofina was isolated from EI-Khadra lake. Behelra, Egypt. The alga was
identified as Spiro/ina p/atensis, and purified as axenic strain. Effect 0 antibiotic
treatment on the Spiro/ina p/atensis was studied. Bacterioplankton were different in
their antibiotic sensitivity, ampicillin was more effective. Axenic Spirufina p/atensis
strain (bacteria free) was cultivated on a large-scale. The dry biomass algal yield
contains as high as 60 % crude protein, Sp < /em>irofina dry biomass added to t~e diet of
Rahmany male sheep in the rate of 50g/Kg signifICantly increased Ca, P, Mg and Cu
concentrations in tl'le blood serum of the animals. This treatment reduced t e period
to puberty and sexual maturity to 69 % of that in control animals. Moreover, addition of
Spirofina to the diet significantly increased semen volume, semen activity and number
of sperms in unit volume. As Sp < /em>iro/ina could optimize tI'le blood picture and
accelerates growth of male sheep, it could be recommended as growth prcroter in
the diet of sheep and similar animals.

Keywords

Journal of Agricultural Chemistry and Biotechnology
Volume 28, Issue 5
May 2003
Pages 4001-4012

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