; Bottini-Luzardo, Maria B.*; Rojas-Garcia, Adelaido R.; Maldonado-Peralta,
Maria de los A.
; Sanchez-Santillan, Paulino
; Filiberto Magadan Olmedo
and Valenzuela-Lagarda, Jose L. ,Mexico
Objective: To evaluate the restarting of ovarian cyclicity and the pre-ovulatory follicle diameter
of cows in early postpartum period fed sorghum ensiled with sowing without fertilization (T1)
and fertilized (T2).
Design / Methodology / Approach: Completely randomized design. The response variables were,
presence of corpus luteum (CL), as indicative of restarting ovarian activity, and subsequent
development of a follicle pre -ovulatory for both revisions ultrasound scanning was used. The
data obtained was analyzed with PROC GLM of SAS (SAS, 2011) the measures were compared
with the Tukey test (?= 0.05).
Results: In the 23 cows fed sorghum ensiled with fertilized sowing(T2) CL and pre - ovulatory
follicle were observed. In the case of T1, only 12 cows developed corpus luteum and preovulatory follicle. The diameter measure of the follicles of the cows in (T2) was 18.1mm, while
T1 was 0.78mm.
Study limitations/implications: With the results observed in the present study, it can be inferred
that the management of the crop, in this case the crop of sorghum, has effects on the ovarian
reactivation of Brahman cows in the early postpartum period, which implies that the producer
you must take care of the feeding of the cattle, from the moment of sowing until it reaches the
mouth of animal.
Findings/conclusions: According to the results, it is concluded that feeding with ensiled of
fertilized sorghum during sowing to cows in the early postpartum period could favor the restart
of the estrous cycle and increase the diameter of the follicles