H. Ayres

TL;DR: These findings provide evidence of a greater sensitivity of RB oocytes to summer HS and suggest that the association of RB fertility problems and summer HS may potentially impair oocyte quality.

TL;DR: In this paper, the relationship between body condition score (BCS) and rump fat thickness (RFAT) measured by ultrasonography was investigated by regression models and the analysis of similarity among the five obtained models was performed using the proc MIXED from SAS and the correlations among variables were analyzed with proc CORR from SAS.

TL;DR: ECG at norgestomet implant removal increased the growth rate of the largest follicle (LF) from implant removal to TAI, the diameter of the LF at Tai, and rates of ovulation and pregnancy rates, and GnRH at TAI improved the synchrony of ovulations andregnancy rates in postpartum Nelore cows.

TL;DR: This review discusses the distinct aspects of follicular development in lactating dairy cows and the methodologies that have been utilized in the past two decades in order to manage the dominant follicle during synchronization of ovulation and timed AI programs.

TL;DR: The presence of a CL (and/or onset of puberty) must be considered in setting up FTAI programs in heifers and eCG may be an important tool for the enhancement of follicular growth, ovulation, size and function of the subsequent CL, and pregnancy rates in progestin-based FTAI protocols in Bos indicus heifer.