Publications by authors named "Patricio Ponce Barajas"
Article Synopsis
- Replacing GnRH with pLH for ovulation synchronization in dairy cows led to improved pregnancy rates after artificial insemination without affecting blood progesterone levels.
- In a study with 24 non-lactating Holstein cows, pLH treatment resulted in a longer duration of elevated LH compared to GnRH, though most morphological and cellular characteristics of the corpora lutea remained similar.
- pLH-treated cows had higher in vitro progesterone production and increased oxytocin receptor mRNA levels, suggesting enhanced ovarian function and potential benefits for embryo development leading to higher pregnancy success rates.
The objectives were to investigate the relationships between endometrial cytology (EC) and interval from calving to first ovulation, and pregnancy in dairy cows, and that between uterine fluid and EC. On day 25 postpartum, 39 dairy cows were grouped based on EC, as having low (≤8%) or high (>8%) polymorphonuclear cells (PMN), and the quantity of uterine fluid was assessed by ultrasound. The interval from calving to first ovulation was shorter in low, than in high PMN cows (32 vs.
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