Evaluation of ovulation rate and ovarian phenotype in puberal heifers from a cattle population selected for increased ovulation rate.

doi:10.2527/2005.8381839x

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Article

Evaluation of ovulation rate and ovarian phenotype in puberal heifers from a cattle population selected for increased ovulation rate.

Journal of animal science - 1 Aug 2005

Cushman R A, Allan M F, Snowder G D, Thallman R M, Echternkamp S E

Abstract excerpt

Long-term selection for increased ovulation rate (1984 to 2002) has resulted in a unique ovarian phenotype in the MARC Twinner cattle population. Ovulation rate and frequency of bilateral ovulations were examined by rectal palpation in 29,547 estrous cycles for 3,910 heifers (12 to 18 mo of age) in this population. Bilateral ovulations (one corpus lutuem [CL] on each ovary) were of interest because bilateral twin...

Topics

Animals
Breeding
Cattle
Estrus Synchronization
Female
Functional Laterality
Ovarian Follicle
Ovulation
Pedigree
Phenotype
Pregnancy
Pregnancy, Multiple
Selection, Genetic

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Open in PubMed

Identifiers

PMID: 16024702
DOI: 10.2527/2005.8381839x

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