Banca de DEFESA: KELLY REGINA FREITAS FREIRE

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : KELLY REGINA FREITAS FREIRE
DATE: 31/05/2021
TIME: 14:00
LOCAL: Será realizado em uma plataforma virtual disponível
TITLE:

Comparison of ruffian techniques in goats

KEY WORDS:

cryosurgery, vasectomy, epididymectomy, goats, surgery.

PAGES: 71
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUBÁREA: Clínica e Cirurgia Animal
SPECIALTY: Clínica Cirúrgica Animal
SUMMARY:

The study will be carried out during the period of 2019/2020, using animals from the Department of Animal Production of the Institute of Animal Science (IZ) of the Federal Rural University of Rio de Janeiro (UFRRJ). It will be used 30 goats, crossbred Saanen x Boer, males, whole, pubescent, aged between 6 and 8 months. All animals will be weighed, identified with numbered plaques fixed by collar in the neck region and photographed front and profile and clinically evaluated. The goats will be housed in suspended covered bays, with dimensions of 5x3m (15 m²), loose during the day in attached picket and collected at dusk. In the bay will be provided chopped grass and feed formulated in the Animal Husbandry sector. The animals will undergo andrological examination, performed at two different times: the day before the first surgical intervention and 90 days after the surgical procedure. The semen collection will be performed with the aid of an artificial vagina suitable for the species, one week before performing the surgical procedures and after 15 days of the same, once a week until total azoospermia (maximum 90 days). Initially, the appearance and color of the ejaculate will be checked. A small aliquot of the ejaculate will be deposited on a sheet of glass covered with coverslip, where they will be evaluated: progressive sperm motility, vigor and swirling and later concentration in a hematimetric chamber (Neubauer chamber). The animals will be submitted to the libido test at two different times, T0 and T90 days after the procedures. In all 3 experimental procedures, the animals will be sedated with 0.2 mg / kg of midazolam and 0.4 mg / kg of xylazine hydrochloride 2%. Afterwards, a local blockade with 2% lidocaine without vasoconstrictor will be performed at the incision site. In the postoperative period, 2mg / kg of tramadol hydrochloride and 25mg / kg of sodium dipyrone will be administered intramuscularly. Technical group of cryosurgery - After palpation and stipulation of the point of introduction of the needle, the region of the tail of the epididymis will be transfixed mid-way in the lateral medial direction with the use of a disposable sterile hypodermic needle 40mm x 0.8 The needle, when inserted into the tissue, will be coupled to a circuit to the cryosurgery apparatus. Immediately after the application of two freeze / thaw cycles, the time of 60 seconds / 45 seconds, respectively. Technical group of epididymectomy - the skin will be incised in the region of the tail of the epididymis, proceeding to the dissection of the structure and ligation of the vas deferens with inabsorbable wire, performing flat to flat raffia with inabsorbable wire. Vasectomy technique group - An incision will be made between the testis and the inguinal ring to locate the spermatic cord and posterior incision in the vaginal tunica, and the vas deferens will be isolated. A double ligation will be made in the vas deferens and incision of a part thereof and ending with the raffia of the subcutaneous tissue and the skin. The objective of the study is to compare the efficiency of minimally invasive cryosurgery with the surgical techniques of vasectomy and epididymectomy in goats.

BANKING MEMBERS:
Presidente - 2929022 - SAULO ANDRADE CALDAS
Interna - 2606155 - VIVIAN DE ASSUNCAO NOGUEIRA CARVALHO
Externo à Instituição - MICHEL JOSÉ SALES ABDALLA HELAYEL - UFF