Veterinarski arhiv, Vol. 77 No. 2, 2007.
Izvorni znanstveni članak
Follicular dynamics in Rathi (Bos indicus) cattle
Mitesh Gaur
; Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary and Animal Science, Bikaner, India
Govind Narayan Purohit
; Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary and Animal Science, Bikaner, India
Sažetak
The objective of this study was to investigate follicular dynamics during oestrus cycle in Rathi (Bos indicus) breed of cattle. Follicular growth and atresia were evaluated using a portable ultrasound device. Of the 14 interovulatory cycles studied in 7 cows, 11 had two waves and 3 had three waves of follicular growth. There was no difference (P>0.05) in dominant or subordinate follicles growth or atresia rates among follicular waves. The first wave of a two-wave cycle emerged on day 2.10 ± 0.36 and lasted for 13.35 ± 1.72 days, whereas the second wave (ovulatory) emerged on day 10.5 ± 0.6 and lasted for 10.4 ± 0.9 days. During the three-wave cycle the first, second and third (ovulatory) waves emerged on day 0.7 ± 0.5, 7.2 ± 1.0 and 13.2 ± 3.4 of oestrus, respectively. Total number of follicles during the oestrus cycle was in the range of 3.36 ± 0.48 to 7.57 ± 1.01, with only slight variation and without any definite pattern. It was concluded that Rathi cattle have follicular dynamics similar to other breeds of cattle.
Ključne riječi
dominant follicle; follicular waves; Rathi cattle; ultrasonography
Hrčak ID:
25096
URI
Datum izdavanja:
20.4.2007.
Posjeta: 1.564 *