Fetal growth in muskoxen determined by transabdominal ultrasonography.
Can J Vet Res
; 58(3): 167-72, 1994 Jul.
Article
in En
| MEDLINE
| ID: mdl-7954117
ABSTRACT
A 5 MHz commercial sector scanner was used to monitor 13 muskox pregnancies and establish normal fetal growth curves. Examinations were carried out between 40 and 197 days of gestation and pregnancy could be detected throughout the period. Early pregnancies were found by scanning lateral to the udder but as pregnancy progressed the fetus was found closer to the dam's umbilicus. Measurements of cranial and abdominal diameters taken at about two week intervals in seven uncomplicated pregnancies in four cows were used to construct fetal growth curves. These can be reliably used in the reproductive management of muskoxen. In addition a series of regressions based on measurements of the fetuses of muskoxen killed in the Arctic are provided. These allow cranial and abdominal diameters to be related to fetal weight and crown-rump length.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ruminants
/
Ultrasonography, Prenatal
/
Embryonic and Fetal Development
Type of study:
Diagnostic_studies
Limits:
Animals
/
Pregnancy
Language:
En
Journal:
Can J Vet Res
Journal subject:
MEDICINA VETERINARIA
Year:
1994
Document type:
Article