| Autor: |
Duran, P. G., Hufana-Duran, D., Venturina, F. A., Venturina, H. V., Venturina, E. V., Peralta, M. D. B., Rahim, L., Parrish, J. J. |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2628 Issue 1, p1-10, 10p |
| Abstrakt: |
Fourier Harmonic Analysis or FHA, a computer image analysis of sperm nuclear shape to assess DNA fragmentation, was used to classify water buffalo bull into High and Low fertilities. Oocytes sired in vitro by sperm cells of FHA classified High fertility bulls had significantly higher developmental competence than Low fertility bulls, 38.1±3.2 vs. 25.5±3.2 (p=0.021), respectively. The pregnancy rate after AI through synchronized estrus (n=2600) is higher in High fertility bulls (23.2±0.4%) but not different (p=0.07) to those sired by Low fertility bulls (21.0±0.4). To acquire more data and assess calf production performance of the classified High and Low fertility bulls, a four-year record of artificial insemination from the regional centers of the Philippine Carabao Center involving 10 Low fertility and 11 High fertility bulls classified by FHA were analyzed. A total of monitored 12,848 AI services of which the High fertility bull served 6,846 females out of natural estrus and 1,339 females out of synchronized estrus while the Low fertility bulls served 3,432 females out of natural estrus and 1,231 females out of synchronized estrus, respectively, were assessed. Calf production record showed a significantly higher calves produced out of the inseminated cows by High fertility bulls than Low fertility bulls; 61.3±4.4% vs. 41.5±2.6 (p=0.035) from AI through natural estrus and 38.1±6.2% vs. 21.8±0.6 (p=0.040) from synchronized estrus. Male and female calf sired by High fertility bull was 56.1±1.4 male and 43.8±0.1 female while Low fertility bull was 55.4±0.3 male and 44.6±0.3 female, respectively. These results show that FHA is a promising tool in classifying High and Low fertility water buffalo bulls and using bulls classified as high fertility by FHA for AI program can significantly improve calf production. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
