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Abstract
Seminal plasma proteins of the Indian buffalo and cattle were immunologically investigated using rabbit antibuffalo seminal plasma serum, rabbit anticattle seminal plasma serum (unabsorbed and absorbed), gel diffusion, and immunoelectrophoretic analysis. At least 9-12 and 7-10 different proteins, respectively, were present in the seminal plasma of the buffalo and cattle. Albumin and IgG were identified in both the species. At least 4-6 seminal plasma proteins of the buffalo and cattle were antigenically similar to their blood serum proteins. Using absorbed rabbit antibuffalo seminal plasma serum and rabbit anticattle seminal plasma serum, at least 6-7 and 5-6 seminal plasma specific proteins, respectively, were observed in the buffalo and cattle seminal plasma. Antigenically these proteins were different from the blood serum proteins of these two species. The origin and biological significance of seminal plasma proteins are discussed.