Relationships among herd, ram breeds, age of rams, sperm density before diluting and sperm motility during thermal survival test
2009
Stolc, L.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Specialni Zootechniky | Stadnik, L.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Specialni Zootechniky | Jezkova, A.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Specialni Zootechniky | Louda, F.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Specialni Zootechniky
The objective of this study was to determine the effect of the breed (Bohemia Forest (n=32) and Wallachia sheep (n=17)), herd (4 herds of each breed), age (less than 36 months old, 36-60 months old, more than 60 months old), semen density, and the type of diluting solution (Optidyl and Triladyl) on sperm motility during a survival test. A significant effect of the herd, breed, age, and sperm density on sperm motility after 30, 60, and 90 minutes was observed. Significant differences among herds were detected in the level of sperm activity after 90 minutes of the survival test. A significant difference between breeds was determined only in the case of sperm activity after 60 minutes. Higher sperm motility during the entire survival test was detected in Bohemia Forest than in Wallachia rams. A non-significant difference was found in the sperm activity in relation to the age of the rams. Sperm survival during the test significantly differed in relation to sperm density before diluting. No significant differences among the two diluting solutions were observed. Relationships among sperm activity before and after diluting and during the entire survival test were confirmed by significant Pearson's correlation coefficients.
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