Pregnant Anglo-Arab and Thoroughbred mares (n = 24) were divided randomly according to age and breed into 4 groups of 6 mares each from approximately 6 weeks before their expected foaling date. Diets received by the 4 groups varied in essential amino-acid and total protein contents. Serum progestagen, FSH and LH concentrations were determined from the day of parturition until foal heat and duri...

BACKGROUND Secretion of histotroph during the prolonged pre-implantation phase in mares is crucial to pregnancy maintenance, manifested as increased embryonic loss in mares with age-related endometrial degeneration. Glycogen content of uterine histotroph is higher during the progesterone-dominated phase of the estrous cycle in mares, but regulatory mechanisms are not well understood. METHODS ...

Fertility control in wild horses has been contraceptive effects for a second year, and the vaccine's attempted with both stallions and mares. Nonreversible effects are reversible after short-term use. surgical sterilization by means of vasectomy has been After 6 years of treating 52 different mares with successful in inhibiting reproduction in wild horses in porcine zonae pellucidae, contracept...

Abstract It is estimated that 17.3% of all pregnancies in the horse are lost from time detection to day 40, which has significant economic impact. But still, equine reproductive research limited funding opportunities. Understanding dynamics between embryo, endometrium, and corpus luteum (CL) essential ameliorate those losses. Pig embryonic interferon (IFN) gamma for establishment pregnancy. In ...

Previous papers in this series (Klyne, Schachter & Marrian, 1948; Klyne, 1948; Paterson & Klyne, 1948) have described the isolation from pregnant mares' urine of 5a-pregn-16-en-3,B-ol-20-one, uranediol and 5a-pregnane-3,B-ol-20-one as their sulphuric acid esters. This paper describes the fractionation of the neutral steroids of pregnant mares' urine and the detailed examination of some non-keto...

INTRODUCTION Endometritis and endometrosis have been and still are the major reasons for infertility in mares. The diagnosis of endometritis can be based on cytology and microbiology, but endometrial biopsy is still the only way to diagnose endometrosis in the mare. Our study attempted to determine if a single biopsy using his-topathology and immunohistochemistry is sufficient to ascertain reas...

endometritis is one of the major causes of infertility in mares. the present study was conducted to evaluate intrauterine infusion of eucalyptus globulus oil as treatment for mares with experimentally induced endometritis. mares (n=8) were synchronized using two injections of pgf2α (10 mg) 14 days apart. all mares were inoculated with a live culture of 5 × 106 cfu s. zooepidemicus in the dioest...

To investigate the maternal plane of nutrition and role of Se yeast on muscle Se concentration, plasma glutathione peroxidase (Gsh-Px) activity, and colostrum Se concentration in mares and their foals, 28 Quarter Horse mares (465 to 612 kg of BW, and 6 to 19 yr of age) were used in a study with a randomized complete block design. Mares were blocked by expected foaling date and randomly assigned...