Embryo development and follicular status of Toggenburg does fed urea diet.

The effects of feeding urea on embryo production, quality and developmental stages and follicular status at the beginning of a superovulatory treatment of Toggenburg does fed urea diet were investigated in this study. Eighteen females were randomly allocated to 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 cycle by transcervical technique and classified according to quality and developmental stage. The follicular status was determined by transrectal ultrasonography at the first day of FSH injection. The number and quality of embryos were not affected by dietary urea concentration. Embryos from does treated with 2.4% UDM were recovered at advanced stage. Urea concentration (2.4%) decreases the number of follicles with less than 5 mm diameter. This follicle class is positively correlated to the number of recovered embryos and to the number and percentage of excellent and good embryos.

Bibliographic Details

Main Authors:	AMORIM, L. da S., TORRES, C. A. A., SIQUEIRA, L. G. B., FONSECA, J. F. da, GUIMARÃES, J. D., CARVALHO, G. R. de, ALVES, N. G., OLIVEIRA, M. M. N. F. de
Other Authors:	LINCOLN DA SILVA AMORIM, UFV; CIRO ALEXANDRE ALVES TORRES, UFV; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; JEFERSON FERREIRA DA FONSECA, CNPC; JOSÉ DOMINGOS GUIMARÃES, UFV; GIOVANNI RIBEIRO DE CARVALHO, UFV; NADJA GOMES ALVES, UFLA; MARGARIDA MARIA NASCIMENTO FIGUEIREDO DE OLIVEIRA, Universidade Federal do Vale do Jequitinhonha e Mucuri.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2011-12-19
Subjects:	Embryo, Follicle, Goat, superovulation, urea,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/910244 https://doi.org/10.1590/S1516-35982011000200007
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