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- 1B-Mode Ultrasonography
- 1Breeding Soundness Examinations
- 1Dominant Follicle
- 3Ambrose, Divakar J.
- 1Burton, Bruce
- 1Colazo, Marcos G.
- 1Emmanuel, Daya G. V.
- 1Kastelic, John P.
- 1Rajamahendran, Rajadurai
Transrectal real-time ultrasonography has proved to be a rapid and reliable technique for studying reproductive functions in cattle. Through ultrasonography it is now established that follicular growth occurs in wave-like patterns during each estrous cycle. It has been shown that follicular...
Abstract — An 8-month-old, virgin Holstein heifer with precocious mammary development was presented for examination. Protein, fat, and lactose in the mammary secretion were 14.90%, 0.12%, and 0.20%, respectively; somatic cell count was 3.9 3 10 6 /mL, with no bacterial infection. The heifer was...
Comparison of 2 enzyme immunoassays and a radioimmunoassay for measurement of progesterone concentrations in bovine plasma, skim milk, and whole milkDownload
The objective of this study was to compare 2 enzyme immunoassays (EIAs) with a radioimmunoassay (RIA) as to sensitivity and accuracy in the measurement of the progesterone (P4) concentration in bovine plasma, skim milk, and whole milk. The 72 samples from 24 lactating dairy cows expected to have...