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Testicular Development And Endocrine Characteristics Of Boars Selected For Either High Or Low Testis Size , A. P. Schinckel, R. K. Johnson, R. J. Kittock

Department of Animal Science: Faculty Publications

Thirty-six Landrace x Large White cross boars were selected from litters with either high or low estimated breeding values for 150-d paired testis weight. Blood samples were taken via jugular venipuncture at eight ages (42, 56, 70, 84, 98, 112, 126 and 140 d). At each sampling age, nine blood samples were taken at 30-min intervals. Luteinizing hormone (LH) was determined on the individual serum samples. Serum samples from each boar at each age were pooled and concentrations of follicle-stimulating hormone (FSH), estradiol-17β (E₂) and testosterone (T) were determined. Paired testis width, testis length and body weight were …