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The existing literature sans a collective picture of minerals and seminal plasma proteins in cow bulls having major sperm morphological defects. The present study involved six Jersey bulls imported from Denmark as calves. After sexual maturity, two bulls (Ab1 and Ab2; collectively as Ab) repeatedly exhibited abnormal spermiogram. The major sperm morphological abnormalities in Ab1 and Ab2, respectively, were Dag defect (32 and 27%), distal mid – piece reflex defect (42 and 17%) and coiled tail (11 and 12%). The mineral content of Ca and P was similar between the Ab and N (normal; N1, N2, N3 and N4 - collectively as N); values being higher in seminal plasma than blood plasma in both the groups. Seminal plasma of Ab had high K (indicates membrane damage), high Zn, especially in Ab2 (linked to Dag defect) and low Cu (decreases progressive motility). The seminal plasma proteins revealed absence of 15 kDa protein and weak expression of 25 kDa protein in Ab1. Both proteins are associated with sperm motility, viability and morphological abnormalities. In conclusion, the semen with abnormal sperm morphology also exhibited altered mineral content and seminal plasma proteins, which corroborates to their respective roles in seminology. [ABSTRACT FROM AUTHOR]