The effects offeeding urea on embryo production, quality and developmental stages and follicularstatus at the beginning of a superovulatory treatment of Toggenburg does fedurea diet were investigated in this study. Eighteen females were randomly allocatedto receive diets with: no urea (control, n=8), and 2.4% urea dietary dry matter(n=10) UDM. The embryo recovery was performed at day 7 or 8 of estrus cycleby transcervical technique and classified according to quality and developmentalstage. The follicular status was determined by transrectal ultrasonography atthe first day of FSH injection. The number and quality of embryos were not affectedby dietary urea concentration. Embryos from does treated with 2.4% UDM wererecovered at advanced stage. Urea concentration (2.4%) decreases the numberof follicles with less than 5 mm diameter. This follicle class is positivelycorrelated to the number of recovered embryos and to the number and percentageof excellent and good embryos.
