Effect of zinc supplementation on semen quality and some biochemical indexes in stud Holstein bulls
1998
Li Wenli | Ren Huiying(Laiyang Agricultural College, Shandong (China). Dept. of Animal Science)
Six stud Hostein bulls were selected to study the effect of zinc one semen quality, enzymatic activities, zinc and tesosterone concentrations in the semen or seminal plasma. The results showed that zinc supplementation can significantly increase the motility of spermatozoa in fresh or frozen semen, spermatozoa concentrations and the percentage of acrosomal integrity (P 0.05), but no significant difference in ejaculate volume and the percentage of spermatozon abnormalities between two groups (P 0.05). No statical difference was found in AKP and GOT activities of resh seminal plasma between two groups (P 0.05), but LDH activities in group 2 was higher than that in group1 (P 0.05). After freezing treatment, the AKP, GOT and LDH activities were the highest in group 2, but no significant difference was found between the two groups (P 0.05). Serum zinc and testosterone concentrations in group 1 was much higher than that in group 2 (P 0.05), but no significant difference in zinc and testosterone concentrations of seminal plasma was found between the two groups.
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