Twenty-four postpartum Sahiwal cows that did not show oestrus upto 85 days postpartum were randomly divided into two equal groups, A and B. Group A cows were injected 2 ml Prostavet injection containing 5 mg Etiproston, a synthetic analogue of PGF2α (Virbac, France) intramuscularly at day 85 postpartum on chronological basis of calving dates without palpation. A second injection was given 11 da...

This paper addresses detection of oestrus in dairy cows using methods from statistical change detection. The activity of the cows was measured by a necklace attached sensor. Statistical properties of the activity measure were investigated. Using data sets from 17 cows, diurnal activity variations were identified for the ensemble and for the individual cows. A diurnal filter was adapted to remov...

This study investigated the hypothesis that a reduction in submission rates at a resynchronised oestrus is not due to the resynchrony treatment involving intravaginal progesterone releasing devices (IVDs) and oestradiol benzoate (ODB) but is associated with artificial insemination (AI) at the first synchronised oestrus. In Experiment 1, cows were synchronised for first oestrus with IVDs, with O...

Artificial insemination program to increase production is affected by oestrus. Breeders generally identify cows in oestrus based on their behavior. Currently, can be predicted and scheduled due PGF2α synchronization. This study aims determine the detection of after synchronization, more specifically distinguish audio-visual The six used were synchronized using PGF2α. Descriptive methods include...

The purpose of the present study was to investigate whether the electrical resistance values of the cervical mucus and/or blood οestradiol-17β and progesterone concentrations at mating, after oestrous synchronisation during the anoestrous or oestrous period in ewes, are related to fertility. Oestrus was induced by medroxyprogesterone acetate-impregnated intravaginal sponges (Veramix, Upjohn, US...

KŘIVÁNEK, I.: Impedance pattern of vaginal and vestibular mucosa in cyclic goats. Acta univ. agric. et silvic. Mendel. Brun., 2008, LVI, No. 4, pp. 109–114 The changes of vaginal and vestibular impedance during the oestrous cycle in goats were examined. The onset of oestrus was teased with a buck once a day during the experiment. Impedance was measured by a four-terminal method. The vaginal imp...

This paper suggests a method for automatic detection of sows returning to 1 oestrus in the gestation department. The detection is based on monitoring of 2 sows’ visits to a boar, where the duration and frequency of visits are modelled 3 separately and subsequently combined. The hypothesis is that it is possible 4 to reduce the response time and the number of false alarms compared to 5 previousl...

This article suggests a method for detecting oestrus, lameness and other health disorders for group housed sows fed by electronic sow feeders (ESF). The detection method is based on the measure of the individual eating rank, modeled using a univariate Dynamic Linear Model. Differences between the predicted values of the model and the observations are monitored using a control chart: a V-mask is...

Effective reproductive management is a crucial concern in the dairy industry and missed oestrus and late recognition of unsuccessful insemination can lead to substantial financial loss. Progesterone levels change in a predictable manner with progress of the oestrus cycle and with the onset of pregnancy. We report here the development of a simple ELISA test for the measurement of progesterone le...