Get access to all handy features included in the IVIS website
- Get unlimited access to books, proceedings and journals.
- Get access to a global catalogue of meetings, on-site and online courses, webinars and educational videos.
- Bookmark your favorite articles in My Library for future reading.
- Save future meetings and courses in My Calendar and My e-Learning.
- Ask authors questions and read what others have to say.
The Doppler in field reproductive management: effective resource or pure fantasy?
Gnemmi G.
Get access to all handy features included in the IVIS website
- Get unlimited access to books, proceedings and journals.
- Get access to a global catalogue of meetings, on-site and online courses, webinars and educational videos.
- Bookmark your favorite articles in My Library for future reading.
- Save future meetings and courses in My Calendar and My e-Learning.
- Ask authors questions and read what others have to say.
Read
Objectives: Is the Doppler a technique that we can use on a daily basis in dairy/beef farms? Is Doppler a technique that only has a reason to be used in research?
Can we use Doppler for the diagnosis of non-pregnancy in cattle? Are there differences between dairy and beef cattle? When is it convenient to perform this examination?
Can we use Doppler for the selection of recipients in em- bryo transfer?
Is it possible to use Doppler to define the time of ovulation?
Is it possible to use the Doppler to define the time of the oestrus cycle?
Is it difficult to learn to use Doppler? Is it difficult to set up the ultrasound scanner to use the Doppler? Is it convenient to buy an ultrasound scanner with Doppler?
Can I use Doppler to define the physio-pathology of the uterus?
Can I use the Doppler to make a diagnosis of embryonic distress and/or can I use this technique to define possible reasons for a possible therapeutic strategy?
These are some of the questions that the practitioners involved bovine reproduction regularly asks their self when deciding whether to engage in this technique. The purpose of this presentation is to give a simple and honest answer to these questions.
Materials & Methods: Personal experience and a critical analysis of the bibliography on the subject of Doppler in bovine reproduction are shared. The point of view of the customer, i.e. the buyer of the service, is shared. The state of the art of the technique in practice and research is defined, and an attempt is also made to understand the possible developments of the technique also in the light of artificial intelligence.
Results: The Doppler today, for the veterinarian involved in reproductive management in the field, has its own reason for use in the indirect definition of the level of progesterone produced by the corpus luteum: this certainly opens up the possibility of more precise ultrasound reproductive management.
Doppler assessment of the corpus luteum allows an accurate diagnosis of non-gestation: 5.0-10.0% false positives and approximately 0.5-1.0% false negatives.
In the selection of recipients for embryo transfer, the possible use of the Doppler technique is opening up. However, according to the writer, it will take some time before this technique can be applied on a scale. Ad of In the selection of recipients for embryo transfer, the possible use of the Doppler technique is opening up. However, according to the writer, it will take some time before this technique can be applied on a scale. To date, the accuracy of the technique is greatly affected by two factors: the quality of the Doppler used and the experience of the technician.
The other possible applications of the Doppler technique are still at an experimental stage and have not, however, encountered definitive scientific validation.
Conclusions: It is certain that Doppler will be incorporated into all ultrasound units, even ultra-portable ones, within the next five years. With regard to its possible actual use in the field, i.e. outside scientific research, it is currently difficult to see a concrete application outside the assessment of the degree of vascularisation of the corpus luteum. The use of artificial intelligence will probably make the technique usable on a scale, reducing the objective limitations, today represented by the set up of the ultrasound unit and above all by the experience of the technician.
For those who work in the reproductive management of beef cattle and where fixed-time insemination with re-synchronisation is used, this technique finds immediate application. It is worth remembering that while around 25 million fixed-time inseminations are carried out in Mercosur today, in other continents such as Europe, artificial insemination, and especially fixed-time insemination of beef cattle, is still an embryonic technique, also due to a whole series of limitations and prejudices related to synchronisation. In dairy cattle, on the other hand, where fixed-time insemination is widely used, there remains the problem of defining a re-synchronisation programme, currently unavailable, that allows a weekly diagnosis of non-gestation.
Get access to all handy features included in the IVIS website
- Get unlimited access to books, proceedings and journals.
- Get access to a global catalogue of meetings, on-site and online courses, webinars and educational videos.
- Bookmark your favorite articles in My Library for future reading.
- Save future meetings and courses in My Calendar and My e-Learning.
- Ask authors questions and read what others have to say.
About
Affiliation of the authors at the time of publication
BOVINEVET INTERNACIONAL Bovine Ultrasound Services & Herd Management, Huesca, Spain
Comments (0)
Ask the author
0 comments