الفهرس 
Function and deficiency of phosphorusOnly 14 pages are availabe for public view
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Abstract
Phosphorus is an essential element required in the high energy metabolism and the deficiency of which can prove detrimental to pituitary ovarian axis thereby effect on reproductive performance of males. Aim of this study was to evaluate sexual desire, physical, semen characteristics, and some blood biochemical parameters of buffalo bulls injected with tonyphosphane during summer season. A total of 20 sexually mature Egyptian buffalo bulls with average of 4 years of age and 600 kg live body weight was divided into 4 experimental groups (5 bulls in each). Bulls in the 1st group (G1) were served as a control with no treatment. However, each bull of those in the 2nd (G2), 3rd (G3) and 4th (G4) groups was once weekly administrated by intramuscular injection with 5, 7 and 10 mLof tonyphosphane for 8 weeks (treatment period).