Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-05-26T20:02:59Z No. of bitstreams: 1 2016 - Phillipe Bauer de Ara?jo D?ria.pdf: 2728729 bytes, checksum: 9a6172b97d933c398e4d0dd04647cad7 (MD5) / Made available in DSpace on 2017-05-26T20:02:59Z (GMT). No. of bitstreams: 1 2016 - Phillipe Bauer de Ara?jo D?ria.pdf: 2728729 bytes, checksum: 9a6172b97d933c398e4d0dd04647cad7 (MD5) Previous issue date: 2016-02-26 / The current study aims to develop a minimally invasive surgical technique with the use of cryosurgery that provides sterilization of sheep for different purposes. It was used eighteen rams, half blood Santa In?s x Dorper, pubescent, with aged between 8 and 12 months and scrotal circumference greater than or equal to 25 cm, kept in confinement. The animals were weighed, clinical and hematological tests were done. By ultrasonographic, testes, epididymides and spermatic cords were evaluated and was made breeding soundness examination, serum testosterone dosage and libido test. After being considered suitable, were divided into two groups, with nine animals each group: TEST GROUP (TG) and CONTROL GROUP (CG). The surgical technique in TG consisted in the transfixing of the tail of the epididymis in the medial latero direction, with sterile and disposable hypodermic needle of 0.80 x 40mm, 21G x 1 ?, is being coupled to a circuit composed of stainless steel adapter attached to a flexible rubber tube with 15 cm in length, diameter of 7,05mm and 4,50mm of lumen, connected to unit Cryogun CryAc, then receiving the application of two cycles of freeze / thaw, by time of 60 / 45 seconds respectively by repeating the procedure on the contralateral organ. In CG proceeded only epididymis tail transfixion as previously described, without cryosurgery, waiting for the same time interval as in TG. The animals were observed for a period of 33 days, repeating to the end of this stage all tests performed before surgery, followed by orchiectomy to obtain the testis, the epididymides and tunics for macroscopic and histological in stained laminas by hematoxylin and eosin observed in optical microscopy. Semen analysis performed at 33 days revealed azoospermia in six of the nine sheep allocated in TG which was not observed in CG sheep. The statistical analysis showed no significant changes in body weight, scrotal circumference and libido of TG animals. Serum testosterone measurements before and after the procedure in TG were within the curve. Ultrasonography in the TG showed no changes in the testicular parenchyma, however demonstrating changes in the shape and increased epididymal tail dimensions with heterogeneous echo texture and the presence of cystic cavities occupying a large area of the epididymis tail, with hypoechoic homogeneous content inside. Microscopy revealed changes in the testicles of eight TG animals as contracted seminiferous tubules, diffuse vacuolation of germ cells, absence of sperm cells in the lineage, reduction in sperm production and the presence of sperm cells dead. It was noted in the epididymal tail semen extravasation into the interstitial space, with the formation of spermatic granuloma, adjacent fibrosis, and the presence of large vacuoles with stasis of the sperm cells inside and thickening of the coats in some patients. It concludes that the proposed technique in TG is safe, fast, easy to perform, with low cost, minimally invasive and free of the occurrence of postoperative complications, providing sterilization of six of the nine sheep evaluated in the 33-day period. / O presente estudo visa o desenvolvimento de t?cnica cir?rgica minimamente invasiva com o emprego da criocirurgia que proporcione a esteriliza??o de carneiros para diferentes fins. Foram utilizados 18 ovinos, mesti?os Santa In?s x Dorper, machos, inteiros, p?beres, com idade entre 8 e 12 meses e circunfer?ncia escrotal maior ou igual a 25 cm, mantidos em confinamento. Os animais foram submetidos a pesagem, avalia??o cl?nica, hematol?gica, ultrassonografia de test?culo/epid?dimo e cord?o esperm?tico, exame androl?gico, dosagem de testosterona s?rica e teste de libido. Ap?s serem considerados aptos, foram divididos em dois grupos experimentais, com nove animais cada, denominados GRUPO TESTE (GT) e GRUPO CONTROLE (GC). A t?cnica cir?rgica aplicada nos pacientes do (GT) consistiu da transfixa??o da cauda do epid?dimo com agulha hipod?rmica est?ril descart?vel 0,80 x 40mm, 21G x 1 ?, no sentido latero medial, estando esta acoplada a um circuito composto por adaptador de a?o inox ligado um tubo de borracha flex?vel de 15cm de comprimento, 7,05mm de di?metro e l?men de 4,50mm, conectado a aparelho Cryogun CryAc, recebendo ent?o a aplica??o de dois ciclos de congelamento / descongelamento, pelo tempo de 60 segundos / 45 segundos respectivamente, repetindo-se o procedimento no ?rg?o contralateral. No GC procedeu-se apenas a transfixa??o da cauda do epid?dimo conforme descrito previamente, aguardando-se pelo mesmo intervalo de tempo que no GT, sem a realiza??o da criocirurgia. Os animais foram acompanhados por um per?odo de 33 dias, repetindo-se ao final desta etapa todos os exames realizados antes da interven??o cir?rgica, seguidos de orquiectomia para obten??o das pe?as contendo os test?culos, epid?dimos e t?nicas para avalia??o macrosc?pica e posterior an?lise histopatol?gica das l?minas coradas por Hematoxilina e Eosina em microscopia ?ptica. O espermograma realizado aos 33 dias revelou azoospermia em seis dos nove carneiros do GT, n?o tendo sido observado este quadro em nenhum dos ovinos do GC. As analises estat?sticas n?o evidenciaram altera??es significativas para peso corporal, per?metro escrotal e libido dos animais do GT. As dosagens de testosterona s?rica antes e ap?s a realiza??o da t?cnica proposta no GT situaram-se dentro da curva. O exame ultrassonogr?fico do GT n?o evidenciou altera??es no par?nquima testicular, demonstrando por?m altera??es na forma e aumento das dimens?es da cauda do epid?dimo, com ecotextura heterog?nea e a presen?a de cavidades c?sticas ocupando uma grande ?rea da cauda do epididimo, com conte?do homog?neo hipoec?ico em seu interior. A microscopia revelou altera??es nos test?culos em oito animais do GT com t?bulos semin?feros contra?dos, vacuoliza??o difusa de c?lulas germinativas, aus?ncia de c?lulas da linhagem esperm?tica, redu??o na produ??o de espermatozoides e presen?a de espermatozoides mortos, notou-se na cauda do epid?dimo o extravazamento de s?men para o interst?cio, com a forma??o de granuloma esperm?tico, fibrose adjacente, al?m da presen?a de grandes vac?olos com estase de espermatozoides no seu interior e espessamento das t?nicas em alguns pacientes. Conclu?mos que a t?cnica proposta no GT mostrou-se segura, r?pida, de f?cil execu??o, baixo custo, minimamente invasiva e isenta da ocorr?ncia de complica??es p?s-operat?rias, proporcionando a esteriliza??o de seis dos nove carneiros avaliados no per?odo de 33 dias.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T13:31:11Z No. of bitstreams: 2 igor_nero_kelles_lage.pdf: 553484 bytes, checksum: f586c23a68b5565ba2fdb50202e3ac93 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T13:31:37Z (GMT) No. of bitstreams: 2 igor_nero_kelles_lage.pdf: 553484 bytes, checksum: f586c23a68b5565ba2fdb50202e3ac93 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-18T13:31:37Z (GMT). No. of bitstreams: 2 igor_nero_kelles_lage.pdf: 553484 bytes, checksum: f586c23a68b5565ba2fdb50202e3ac93 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2010 / Objetivou-se com este trabalho avaliar quanto ? classe sexual de bovinos influencia as caracter?sticas de desempenho, consumo, efici?ncia alimentar, al?m das caracter?sticas de carca?a e qualidade de carne. O experimento foi realizado em delineamento inteiramente casualizado, utilizando-se 15 bovinos, sendo 5 machos castrados, 5 f?meas castradas e 5 f?meas. Os animais foram distribu?dos aleatoriamente em baias individuais, onde receberam a mesma dieta por um per?odo de 106 dias. Ao final do experimento, foram abatidos e coletados os dados referentes ?s caracter?sticas de carca?a: pH, temperatura, peso das carca?as quentes e frias, ?rg?os e v?sceras. Da meia carca?a direita foram pesados os cortes: ac?m, paleta, ponta de agulha, cox?o e alcatra completa. Na meia carca?a esquerda, foram mensuradas a ?rea de olho de lombo, a espessura de gordura subcut?nea e o comprimento da carca?a. A sec??o HH foi retirada de cada animal, entre a 9? e a 11? costela; e dela foram separados e pesados os m?sculos, gordura e ossos. Foi coletada uma amostra do m?sculo Longissimus dorsi, correspondente a cada animal para an?lises de composi??o qu?mica, ?ndice de fragmenta??o miofibrilar, for?a de cisalhamento, porcentagem de col?geno sol?vel e teor de col?geno total, colora??o e c?lculo das perdas. Entre as classes sexuais n?o houve diferen?a estat?stica para ganho de peso, consumo e digestibilidade da mat?ria seca e dos nutrientes, efici?ncia alimentar e caracter?sticas de carca?a. Avaliando-se o m?sculo Longissimus dorsi dos bovinos pertencentes ?s diferentes classes sexuais, verificou-se tamb?m que n?o houve diferen?a estat?stica para as vari?veis: maciez, cor, pH, percentual de col?geno sol?vel e quantidade total de col?geno, perdas e composi??o qu?mica. De acordo com as caracter?sticas de carca?a, desempenho, consumo, efici?ncia alimentar e das caracter?sticas qualitativas da carne avaliadas, verifica-se que n?o h? necessidade de castra??o de f?meas e machos bovinos com o intuito de aumentar o desempenho, melhorar as caracter?sticas de carca?a e qualidade de carne. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT The goal of this work was to evaluate how cattle gender profile influences performance, intake, feed efficiency, as long as carcass and traits beef quality. The experiment was carried out in a complete randomized design, using 15 animals (5 steers, 5 spayed heifers and 5 intact heifers.) They animals were distributed randomly in individual pens. All animals receive the same diet for a period of 106 days. At the end of the experiment, they were slaughtered and data related to the carcass were collected: pH, temperature, of hot and cold carcass weight, organs and visceral weight. The right half carcass was processed into chuck, shoulder, flank boneless, round, and d-rump. From de left half carcass was taken of measure of the rib eye area, fat thickness and carcass length. From the 9th to 11th left half carcass, the rib was cut off (HH section) and then dissected into muscle, fat and bones. A sample of the Longissimus dorsi muscle from each carcass was collected and analyze for it?s chemical composition, myofibrillar fragmentation index, shear force, percentage of total and soluble collagen, color, and losses. Among the sexual classes there wasn?t any difference on performance, intake and digestibility of dry matter and nutrients, feed efficiency or carcass characteristics. Evaluating the Longissimus dorsi muscles of the cattle from different sexual classes it was verified that there wasn?t any difference for the variables: MFI, Shear force, color, pH, percentage of total and soluble collagen, loss and chemical composition. From the data of carcass traits, performance, intake, feed efficiency and meat quality evaluated it can be concluded that there isn?t necessary to castrate heifers and steers in order to increase performance and improve carcass traits and meat quality.

Made available in DSpace on 2014-12-17T15:39:03Z (GMT). No. of bitstreams: 1 JuvaneideRAC_DISSERT.pdf: 785344 bytes, checksum: fc7f572506ad9da28db929662458f775 (MD5) Previous issue date: 2013-08-23 / Universidade Federal do Rio Grande do Norte / This work seeks to understand the difficulties and dilemmas that pervade the career choice of teenagers. For this, we take investigative via psyquic unconscious determinations that, as observed in present clinical practice, it is also confirmed important in the reviewed literature. In the last one, the most important findings signaled an important relationship between identification processes and the various choices we make throughout life. These findings led us to question about how psychoanalysis understands these processes and how they are involved in building the career choice of teenagers. From the referential Freudian and Lacanian, we have studied the concepts of adolescence and identification, which articulated the process of career choice and fragments of clinical cases, allowed us to reach conclusions that point to the deep involvement of the dimension of desire and the unconscious in issues regarding career choices and the possibility of building a listening, of the difficulties found there, more attentive to the psychic determinations and singular responses that each presents in front of these determinations / Este trabalho busca compreender as dificuldades e os impasses que permeiam a escolha profissional de adolescentes e jovens. Para isso, tomamos como via investigativa as determina??es ps?quicas inconscientes, que, constatadas como presentes na pr?tica cl?nica, tamb?m se confirmaram importantes na literatura revisada. Nessa, os achados mais relevantes sinalizaram para uma importante rela??o entre os processos identificat?rios e as diversas escolhas que fazemos no decorrer da vida. Tais achados levaram-nos a questionamentos sobre como a Psican?lise compreende tais processos e o modo como eles se implicam na constru??o da escolha profissional de adolescentes e jovens. A partir do referencial freudiano e lacaniano, fizemos um estudo dos conceitos de adolesc?ncia e identifica??o, os quais, articulados ao processo de escolha profissional e a fragmentos de casos cl?nicos, permitiram-nos chegar a conclus?es que apontam para o profundo envolvimento da dimens?o do desejo e do inconsciente, nas quest?es relativas ?s escolhas profissionais, e para a possibilidade de constru??o de uma escuta, das dificuldades a? surgidas, mais atenta ?s determina??es ps?quicas e ?s respostas singulares que cada um apresenta frente a essas determina??es