The effects of progestogen-gonadotropin treatment on estrous response, ovulation rate and lambing response of crossbred ewes were examined at two times during the anestrous season (May-June and July-August). Each ewe group was treated with progestogen pessaries for 16 days and injected with 750 IU pregnant mare serum gonadotropin (PMSG) on days 17 and 32 to induce two consecutive estrous period...

AIM The aim of this study was to evaluate the efficacy of three different treatment protocols for estrus induction and conception rate in postpartum anestrus buffaloes during breeding season under field conditions. MATERIALS AND METHODS The 47 postpartum anestrus buffaloes of the 2nd to 6th parity were divided into three groups. Group 1 (n=16): Buffaloes received cosynch treatment, that is, b...

The present experiment was designed for estrus induction in post-partum anestrus cattle. A total of 120 cows were examined reproductive status, and 30 incorporated induction, including 24 6 normal cyclic cows. assigned to 5 groups (6 animals per group). group-1 induced using Ovsynch protocol, while group-2 inserted TRIU-B (958 mg progesterone) intra-vaginal inseminated at a fixed time. group-3 ...

Two experiments were conducted to determine if propylthiouracil (PTU)-induced thyroid suppression immediately before onset of anestrus would extend the breeding season in mature ewes. In Exp. 1, twice-weekly serum concentrations of progesterone indicated that all ewes were cyclic before initiation of treatment. Beginning on d 0 (January 17), ewes received 0 (n = 4), 20 (n = 5), or 40 (n = 5) mg...

Growth differentiation factor 9 (GDF-9) and bone morphogenetic protein 15 (BMP-15) play important functions in follicular and oocyte development in many species. This study evaluated the dynamic expression of GDF-9 and BMP-15 in canine follicles cells using flow cytometry analysis. Follicular cells were removed from three sizes of antral follicles (small, medium and large) from ovaries of bitch...

The onset of estrus is a critical sign of female sexual maturity. The pituitary plays a vital role in this process by the secretion of reproductive hormones. To investigate the effects of nutrient restriction on reproductive function and the underlying mechanisms involved, deep RNA sequencing of pituitary gland tissue was carried out to determine the differentially expressed genes (DEGs) betwee...

26 The extracellular matrix of the cervix that comprises collagen, elastin, 27 proteoglycans and glycosaminoglycans (GAGs) is thought to have an essential role in 28 cervical relaxation. This study investigated the proportion of collagen and smooth muscle 29 as well as the GAGs in cervices obtained from healthy bitches at different stages of the 30 estrous cycle and bitches with openand closed-...

The microbial population of the uterus fluctuates during the estrous cycle. Microflora of uterus may affect the establishment and maintenance of pregnancy in bitches. The endoscopic samples obtained from the vagina and uterus of 20 female adult mixed‑breed dogs. The uterine lavage samples were prepared for cytology, bacterial (aerobic and anaerobic) and fungal cultures. Uterine tissue samples w...

A cross-sectional study was conducted from January to July 2021 determine the prevalence and contributing factors repeat breeding (RB) postpartum anestrus (PPA) in crossbred dairy cattle central highland of Ethiopia. Furthermore; a retrospective used collect data on occurrence RB PPA associated risk factors. The pregnancy rate determined by rectal palpation day 60 after hormonal therapy using d...