ULTRASONIC ECHOSONOGRAPHY IN VETERINARY GYNECOLOGY AND OBSTETRICS
Main researcher
: HERAK, MIROSLAV (15585) Assistants
MAKEK, ZDENKO (27491)
TOMAŠKOVIĆ, ANTUN (49844)
Type of research: applied Duration from: 07/08/92. to 07/01/95. Papers on project (total): 9
Institution name: Veterinarski fakultet, Zagreb (53) Department/Institute: Department of Reproduction Clinic of Obstetrics Address: Heinzelova 55 City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0) 2390-111
Phone: 385 (0) 2390-326
E-mail: HERAK - MAVEF.VEF.HR
Summary: On the 150 cows which were inseminated 18-58 days earlier
and on 46 mares which were mated 16-58 days earlier, and on 66 goats
which were mated 30-70 days earlier possibility of early pregnancy
diagnosis was investigated by using transrectal transducer of 5 MHz and a
linear-array ultrasound electronic scanner (ALOHA echo camera SSD-210, DX
II) with electronic printer (Mitsubishi video copy AP 8600). It was
concluded that in the cows correctly diagnosis of early pregnancy can be
established on day 28 after insemination (in 98% of cases), in the mares
at the 16th day, but from 26th day accuracy is higher (in our
investigation 100%), and in the goats differed in conection of the
pregnancy stage (from 25th to 32nd days accuracy of diagnosis was 99%).
By ultrasonic transrectal transducer genital organs (uterus and ovaries)
in 114 cows and 84 mares were examined during sexual cycle. By controling
development of follicles and corpora lutea on the ovaries of cows and
mares we established that in the cows follicl is noticeable when had
diametar of 4 mm, and size of follicle near ovulation was 14-18 mm, and
rare 20 mm. Corpus luteum in the cows was noticeable 3-5 days after
ovulation, and later during cycle to the next oestrus and later. In about
25% of cases we found in the corpus luteum cavity surounded with wall of
3-5 mm thickness. Size of corpora lutea was to the 10th day of cycle 12 x
13 mm to 18 x 16 mm, and during diestrus 22 x 15 mm to 25 x 22 mm. In the
mares follicles were noticeable with diametar of 3 mm and later to the
ovulationm when follicles had diametar of 4 to 7 cm. In the mare C.L. was
detectable to the 16th day of cycle. In the 35 cows (donators) we
controled ultrasonicly succes of superovulation and number of corpora
lutea before the embryos were flushed out. Also by ultrasonic transducer
we controled in the 23 cows results of oestrus induction with analoge of
PGF 2 alpha and established that follicles were developed during 48 to
72 hours after injection, but only to the size of 10-12 mm.
Keywords: Ultrasound, echo, echogram, early pregnancy diagnosis, mare, cow, goat, ovaries, follicles, corpora lutea, sexual cycle.
Research goals: First task of this project is to investigate the
earliest day when is possible to diagnosing pregnancy in the cows, mares
and goats by ultrasound scanning and by progesterone concentration
determination in blood or milk. Also tipical echosonograms will be taken
for later use by practicioners on the field. During 1994./95. project will
be continued by diagnosing of physiological and pathological changes on
the ovaries and uterus of cows and mares. By this way it will be possible
to improve results of insemination and mating of cows and mares. Also some
disseases of ovaries and uterus could be adequate cured after ultrasound
diagnosis. Results of this investigations will accelerate production of
offspring.
COOPERATION - PROJECTS
Name of project
: 3-03-480 Embriotransfer u goveda Name of institution: Veterinarski fakultet - Zavod za reprodukciju i
Klinika za porodiljstvo City: 10000 - Zagreb, Croatia
COOPERATION - INSTITUTIONS
Name of institution
: Centar za reprodukciju u stočarstvu
Hrvatske Type of institution: State institute Type of cooperation: Joint publishing of scientific papers City: 10000 - Zagreb, Croatia
Name of institution
: Farma mliječnih krava "Veliki Zdenci" Type of institution: Economical/Production Type of cooperation: Joint publishing of scientific papers City: Veliki Zdenci, HR
Name of institution
: Farma tovnih goveda "Poljanski Lug" Type of institution: Economical/Production Type of cooperation: Occasional exchange of information City: Vrbovec, HR
OTHER ACHIEVEMENTS
Name
: Osim objavljivanja radova, saznanja o postupcima rane
dijagnostike graviditeta ultrazvučnom ehografijom prenijeli smo i na
polaznike postdiplomskog studija, te na veterinare na terenu tijekom
tečajeva za usavršavanje iz U.O., i studente fakulteta. Type of achievement: Teaching aids and educatio
Name
: Upoznali smo s mogućnošću praćenja razvoja folikula i
žutih tijela tijekom ciklusa studente na redovnom i poslijediplomskom
studiju i kolege na terenu u okviru tečajeva o suzbijanju steriliteta. Type of achievement: Teaching aids and educatio Authors: Dr.sc. Miroslav Herak Other information about the project.