The aim of the present study was to further examine the efficacy of different doses and routes of D-cloprostenol and cloprostenol administration on the parturition response in sows. Ninety crossbred multiparous sows (Landrace x Yorkshire) with an average parity number of 4.3 ± 2.4 were allocated to induce farrowing by one of the following treatments: Gr. 1 (control, n=10) injection with normal ...

The present study aimed to determine the effect of administrating prostaglandin F2α (PGF2α) and GnRH at the time of artificial insemination (AI) on the pregnancy per artificial insemination (P/AI) and the pregnancy survival rate of dairy cows. A number of 830 lactating Holstein cows were randomly divided into four groups. Cows in group 1 (n=200) treated with 150 µg d-cloprostenol. In group 2 (n...

Methods: Two experiments were conducted. In experiment 1, sows received one of two treatments: either a single IM injection of 175 μg cloprostenol at day 113 of gestation (n=49) or an IM injection of 175 μg cloprostenol at day 113 of gestation followed by second IM injection of 175 μg cloprostenol 6 hours later (n=54). In experiment 2, sows received either a single (n=59) or a double (n=48) clo...

Experiments were conducted to determine the role of estrogens on endogenous PGF2 alpha secretion and luteolysis following injection of cloprostenol in heifers. In Exp. 1, eight luteal-phase heifers were used to evaluate tamoxifen (T) as an estrogen antagonist. Heifers received T (35 mg i.v.) or ethanol:saline vehicle (ES) every 4 h for 44 h. All received cloprostenol (500 micrograms i.m.) immed...

The objective of the present study was to compare the impact of ovsynch and progesterone-based ovulation synchronization protocol on ovarian response and conception in buffalo (n=19) exhibiting subestrus during low-breeding season (maximum ambient temperatures and relative humidity ranging from 36-45°C and 30-80%, respectively). Group I buffalo (n=10) were administered ovsynch protocol (d 0 and...

This study examined the use of PGF(2α) and estradiol benzoate (EB) either with or without GnRH to synchronize estrus in dairy cows for timed artificial insemination (TAI) under field conditions. First, Holstein dairy cows with a corpus luteum (CL) received 500 μg cloprostenol and were then randomly allocated to three groups: no further treatment (control, n=236); treatment with 1 mg EB 56 h aft...

Abstract The objective was to compare pregnancy rates (PR) on day 30 and loss between days 60 (PL) after timed artificial insemination (TAI; 0) using 2 synchronization protocols, plasma progesterone 18 in suckled beef cows. Angus cows were randomly assigned either 7-d CoSynch (7-d P + GnRH) or 8-d estradiol (8-d ES) protocols for TAI. On -10, the GnRH treatment group (n=574) received a progeste...

AIM Bovine ovarian cysts are a common cause of economic loss in modern dairy herds. The objective of the present study was to evaluate the reproductive responses to three protocols using hCG, GnRH and cloprostenol when the definite diagnosis of the type of ovarian cyst is/is not possible in dairy cows. MATERIALS AND METHODS A total of 144 lactating dairy cows with ovarian cysts were divided i...

Objective. Evaluate the effectiveness of aglepristone with and without cloprostenol for treating canine pyometra. Materials and methods. Ten female French Bulldogs between 3-8 years of age diagnosed with pyometra were divided into two groups, one receiving a 10 mg/kg dose of aglepristone subcutaneously on days 1, 2, 8, 14 and 28, and the other an equal dose on days 1, 3, 8 and 15, as well as a ...

BACKGROUND The present study describes the clinical features and plasma profiles of bovine pregnancy-associated glycoprotein 1 (bPAG1), the main metabolite of prostaglandin F2alpha (PG metabolite) and progesterone (P4) in heifers in which early abortions were induced. METHODS Early abortions were induced in four heifers with cloprostenol and monitored by ultrasonography. Blood samples were co...