Ultrasonographic evaluation of the pre-pubertal development of the reproductive tract in beef heifers

To study the development of the reproductive tract in heifers, the ovaries, uterus, cervix and vagina were examined by transrectal ultrasonography every 2 weeks, from 2 to 60 weeks after birth. First ovulation occurred at 63.7±1.1 weeks of age. Ovarian dimensions increased rapidly from 2 to 14 weeks...

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Bibliographic Details
Published in:Animal reproduction science 2004, Vol.80 (1), p.15-29
Main Authors: Honaramooz, Ali, Aravindakshan, Jayaprakash, Chandolia, Ramesh K, Beard, Andrew P, Bartlewski, Pawel M, Pierson, Roger A, Rawlings, Norman C
Format: Article
Language:English
Subjects:
Aging
Animals
Cattle
Cattle - growth & development
Cervix Uteri - diagnostic imaging
Cervix Uteri - growth & development
Female
Genitalia, Female - diagnostic imaging
Genitalia, Female - growth & development
Ovarian Follicle - diagnostic imaging
Ovarian Follicle - growth & development
Ovary - diagnostic imaging
Ovary - growth & development
Ovulation
Puberty
Reproductive tract
Sexual Maturation
Ultrasonography
Uterus - diagnostic imaging
Uterus - growth & development
Vagina - diagnostic imaging
Vagina - growth & development
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Summary:To study the development of the reproductive tract in heifers, the ovaries, uterus, cervix and vagina were examined by transrectal ultrasonography every 2 weeks, from 2 to 60 weeks after birth. First ovulation occurred at 63.7±1.1 weeks of age. Ovarian dimensions increased rapidly from 2 to 14 weeks of age, and increased again after 34 weeks of age ( P
ISSN:0378-4320
1873-2232
DOI:10.1016/S0378-4320(03)00136-2