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Attainment and Maintenance of Pubertal Cyclicity May Predict High A4 Cows with Reduced Fertility

Nafziger, Sarah
DigitalCommons@University of Nebraska · Papers
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agricultureanimal-sciencesbeef-cattleovaryprogesteronepuberty
Puberty attainment was investigated in heifers. Blood samples were collected from weaning until breeding during 6 years from heifers born in 2012-2017. Plasma progesterone concentrations ≥ 1 ng/ml were used to indicate cyclicity, and heifers were categorized into one of four puberty groups using SAS
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