Changes in LH Pulsatility Profiles in Dairy Heifers During Exposure to Oestrous Urine and Vaginal Mucus
نویسندگان
چکیده
منابع مشابه
Changes in LH Pulsatility Profiles in Dairy Heifers During Exposure to Oestrous Urine and Vaginal Mucus
Difficulty in observing oestrus is a problem for many dairy farmers performing AI. Finding ways to synchronize oestrous cycles or strengthen display of oestrus without hormonal treatments would be of great interest because many consumers object to the use of exogenous hormones on healthy animals. Modification of reproductive cycles through chemical communication has been reported in several spe...
متن کاملThe influence of oestrous substances on cyclicity and oestrous behaviour in dairy heifers
BACKGROUND Declining fertility is a major concern for dairy farmers today. One explanation is shorter and weaker expression of oestrus in dairy cows making it difficult to determine optimal time for artificial insemination (AI). Chemical communication is of interest in the search for tools to detect oestrus or to synchronise or enhance oestrous periods. Pheromones, used in chemical communicatio...
متن کاملPheromones for Modulating Reproduction in Cattle Biological Potential of Oestrus-related Substances in Intra- and Inter-species Chemical Communication
Declining dairy cow fertility, largely attributable to increasing milk yields, is of major concern to dairy farmers worldwide. New tools for reproductive management, to replace exogenous hormones, would be of great interest. Chemical communication in cattle has been suggested to cause modifications of the oestrous cycle. Here, reproductive parameters were monitored in ten dairy heifers during f...
متن کاملChanges in pig cervical mucus in relation to the oestrous cycle.
Daily or more frequent samples of cervical mucus were collected from forty-two gilts and analysed for Na and K. In five gilts, sampled through several oestrous cycles, the K level exceeded that of Na for short periods during oestrus. The ovarian status of twenty animals indicated that the K peak occurred approximately 40 hr before ovulation but with some individual variations. Two of these anim...
متن کاملStudies on Biochemical Properties of Cervico-Vaginal Mucus during Early Pregnancy in Buffaloes (Bubalus bubalis)
The present work was carried out to study the variation in biochemical properties of cervico-vaginal mucus of pregnant and non pregnant animals which could help to design suitable tool in future for early pregnancy diagnosis in buffaloes. Cervico-vaginal mucus samples were obtained from 30 buffaloes (12 pregnant and 18 non pregnant) and some biochemical parameters were compared. Means of pH, so...
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ژورنال
عنوان ژورنال: Reproduction in Domestic Animals
سال: 2012
ISSN: 0936-6768,1439-0531
DOI: 10.1111/j.1439-0531.2012.01997.x