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Table of Contents
Table of Contents
Testicular ultrasonogram pixel intensity during sexual development and its relationship with semen quality, sperm production, and quantitati...
These results indicate that a certain developmental stage of the testicular parenchyma must be reached before puberty and that the composition of the parenchyma remained consistent after puberty. Testicular echogenicity was associated with sperm production, seminiferous tubule and epithelium area, a...
The effects of resveratrol on porcine oocyte in vitro maturation and subsequent embryonic development after parthenogenetic activation and i...
We investigated the effects of resveratrol, a phytoalexin with various pharmacologic activities, on in vitro maturation (IVM) of porcine oocytes. We investigated intracellular glutathione (GSH) and reactive oxygen species (ROS) levels, as well as gene expression in mature oocytes, cumulus cells, and...
Contribution of oocyte source and culture conditions to phenotypic and transcriptomic variation in commercially produced bovine blastocysts.
We compared Buffalo Rat Liver cell coculture with semidefined, medium-based culture, oocytes recovered postmortem with those obtained from live animals, and in vitro with in vivo embryo development. Gene expression levels in expanded blastocysts were measured using microarray and quantitative RT-PCR...
Humoral immune response in lactating dairy cows after repeated exposure to human chorionic gonadotropin.
Our objective was to determine if repeated exposure of lactating dairy cows to human chorionic gonadotropin (hCG) would induce an antibody (Ab) response against hCG. Cows either received an hCG injection (hCG; n = 24, each given 2000 IU im) or no treatment (CON; n = 22) 18 days after a timed AI (TAI...
The effect of exogenous gonadotropins on ovarian function in goats actively immunized against inhibin.
The aim of this investigation was to compare the ovarian response to superovulatory treatments in does before and after inhibin immunization, with a view to optimizing the superovulatory potential of the caprine ovary. To avoid interference by the ovarian cycle, the experiment was conducted out-of-se...
Study of the development of uteroplacental and fetal feline circulation by triplex Doppler
The objective was to evaluate blood flow in fetal and maternal vessels by Triplex Doppler and its association with development of blood vessels during gestation in the domestic cat. Ten queens were examined weekly from 14 to 63 d after mating. Peak systolic velocity (PSV), end diasto...
Fertility-associated antigen on Nelore bull sperm and reproductive outcomes following first-service fixed-time AI of Nelore cows and heifers...
The objective was to determine whether the presence of fertility-associated antigen (FAA) on sperm collected from Nelore (Bos indicus) bulls can be used to assess potential fertility of sperm for use at first-service fixed-time AI (TAI). Six Nelore bulls were selected based on FAA st...