Fifteen nulliparous and nine multiparous Serrana goats were used, through two successive oestrous cycles, in order to characterize their ovulation time with regard to the number of ovulations after induced and natural oestrus during the breeding season. The onset of oestrus was detected by the amount of vasectomized bucks after oestrus synchronization with prostaglandin, given 10 days apart, an...

THE epithelium of the cervix and upper vagina of the cow and certain other animals produces a mucous secretion in which, according to Woodman & Hammond [1925], may be found a mucoprotein belonging to the class of mucin bodies containing mucoitin sulphuric acid, since they identified glucosamine in a specimen of cervical mucus. The chemical composition of this secretion does not appear to have b...

CONSTRAINTS LIMITING THE EFFICIENCY OF ARTIFICIAL INSEMINATION OF CATTLE IN BANGLADESH. The aim of the present study was to identify the factors that influence postpartum intervals to first detected luteal activity, first service and to conception, and the conception rates of cows in the artificial insemination (AI) programme in Bangladesh. A baseline survey (investigations 1, 2 and 3) was made...

The Catalonian donkey breed is in danger of extinction, and much needs to be learned about the reproductive features of its females if breeding and conservation programmes are to be successful. This study reports the oestrous behaviour, oestrus cycle characteristics and dynamic ovarian events witnessed during 50 oestrous cycles (involving 106 ovulations) in 10 Catalonian jennies between March 2...

no report has been published on the economical losses associated with errors in oestrus detection in cows under iranian intensive dairy management. the following study was carried out to determine the accuracy of oestrus detection by farmers using artificial insemination in shiraz dairy farms. milk samples were collected from 179 holstein milking cows at the time of artificial insemination. mil...

Context Detecting oestrus to facilitate the optimal timing of artificial insemination is key reproductive performance in dairy cows. Aims The aims present study were investigate relationship between activity and milk oestradiol concentrations during oestrus. Methods Accelerometers (IceQubes, IceRobotics Ltd, UK) used monitor (the number steps per day) 37 lactating Holstein–Friesian cows peri-oe...

This review emphasizes the fundamental aspects of follicle development and also the usefulness of reproductive hormones and some clinical applications for manipulation of oestrous cycle, oestrus behavior and the ovulation rate in mares.

Brook A. Niemiec DVM Diplomate, ADVC Diplomate DEVDC Fellow AVD Veterinary Dental Specialties and Oral Surgery San Diego, Murrieta, Irvine, Ontario, Santa Barbara, Las Vegas, New Orleans The level of gingival inflammation is broken down into several stages. However, these stages are somewhat arbitrary and gingivitis proceeds through them in a fluid fashion, with no clear demarcations. This news...

oestrus ovis is an economically important parasite of small ruminants and a zoonotic parasite with many reports of ophthalmomyiasis in human from iran and other countries. the aim of the peresent studywas the isolation and identification of excretory-secretory (es) and somatic (s) antigens of o. ovis second and third stage larvae (l2, l3) collected from arabi sheep breeds located in southwest o...

Female African elephants signal oestrus via chemicals in their urine, but they also exhibit characteristic changes to their posture, gait and behaviour when sexually receptive. Free-ranging females visually signal receptivity by holding their heads and tails high, walking with an exaggerated gait, and displaying increased tactile behaviour towards males. Parous females occasionally exhibit thes...