Effect of seminal plasma cholesterol and triacylglycerides concentrations and sperm morphology on semen freezability in domestic cats (Felis silvestris catus).

There is scarce information about the effect of sperm morphology and seminal plasma composition on cat semen freezability. Thus, this study aims to assess the effect of cat sperm morphology and seminal plasma cholesterol (CHOL) and triacylglyceride (TAG) concentrations on sperm post-thaw survival. Ejaculates (n = 49) were evaluated, and seminal plasma was separated and frozen until CHOL and TAG concentrations were measured.

Immunocontraception of male domestic cats using GnRH vaccine Improvac.

The domestic cat is a highly prolific species; thus, reproductive control is crucial to reducing feral cat overpopulation. This study aimed to assess the effect of a commercially-available GnRH vaccine for swine on suppressing sperm production in male cats. Twelve sexually mature tomcats were randomly divided into two groups.

Serum progesterone concentration, volume, and apoptosis of corpora lutea in early, middle and late diestrus in the bitch.

The aim was to study number, volume, apoptosis of corpora lutea (CL), and serum P concentrations in early, middle, and late diestrus of dogs. Thirty-six bitches were ovari-hysterectomized (OVX): Early Diestrus (Group [G]1; OVX 20 days after end of estrus [DEH]); Mid-diestrus (GII; OVX between 21 and 40 days after DEH), and Late-diestrus (GIII; OVX between 41 and 60 days after DEH). Before OVX a blood sample was collected to quantify P.

Endometritis in the bitch: Immunohistochemical localization of cyclooxygenase 2.

Background: In several mammals, subfertility or infertility associated with endometritis was reported. Although there have been studies about endometritis in bitches, the pathophysiological mechanisms are not completely known.

Aim: This study aimed to evaluate the immunohistochemical expression of Cyclooxygenase 2 (COX2) in clinically healthy bitches with normal uterine tissue and bitches with endometritis.

Effect of storage media and storage time on survival of spermatozoa recovered from canine and feline epididymides.

The aim of this study was evaluate the survival ability of canine and feline spermatozoa maintained within epididymides stored at 4 degrees C for 24, 48 or 72 h in sterile isotonic saline solution (SAL) or a Tris-egg yolk (TEY) storage medium. Fifteen domestic dogs and 15 cats were neutered and their testes were placed in TEY or SAL and stored at 4 degrees C for either 24, 48 or 72 h. Sperm samples were obtained by cutting the cauda epididymides into a Tris extender and were evaluated for motility, velocity, viability, plasma membrane integrity, and acrosome morphology.