Anatomohistopatological study of ovarian cystic degeneration in gilts submitted to a association of gonadotrophins and flushing feed / Estudo anatomohistopatológico da degeneração cística ovariana em fêmeas suínas submetidas a associação de gonadotrofinas exógenas e flushing alimentar

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The experiment carried out in LPS (Swine Research Laboratory) and LOV (Oncology Veterinary Laboratory) of Veterinary Medicine and Animal Science Faculty of São Paulo University (FMVZ-USP), verified the cystic degeneration and their histopatological traits in gilts, treated witht the combination of gonadotophins and flushing. 72 pre-pubertal gilts of PenArLan Naïma® lineage with 157,49 ± 5,01, days of age and 96,65 ± 7,70 Kg of live weight were alloted in 4 treatments in a factorial arrangement 2X2. The feed used contained 16% (CP) and 3.286,73 Kcal/Kg ME. From the seventh day on first estrus, induced with gonadotrophins, the females with flushing treatment received a increment of 50% the same feed. From the sisteenth day of the first estrus the gilts that received hormone treatment (600 UI of eCG na 2,5 mg of LH (Lutropin®) 72 hours late), were exposed to a boar twice at day, from the tenth day when the gilts were inseminated t the second estrus with a heterospermic semen. At slaughter on the fifth day after insemination, the genitals were remove to exmine the ovarian patologies, and the embryos. There weren’t significances among treatments to the percentuals of the ovulation number, ovarian cystic percentage; foliculous percentage, corpus luteos and luteinazed cystics. There was significant diference in embryonic viability that indicated an adverse effects of the hormonal combinations in comparision to the flushing treatment. We concluded that both gonadotrophins (eCG and LH) and fushing have influenced on ovarian cystic ocorrence and in the beginning of the study based on the influence of the two factors (hormone and flushing) in the patological cystic genesis, haven’t brought about any deleterious effects of the differents cystic in the dinamic folicular development with no negative reflexion on puberty in gilts

ASSUNTO(S)

suínos ovarian cystic swine hormônio puberty puberdade cistos ovarianos hormonal

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