Resumo: Este artigo apresenta relatos de sete distintas patologias de origem reprodutiva ainda não descritas em cutias (Dasyprocta aguti Linnaeus, 1758) fêmeas, que afetaram a fertilidade ou resultaram na morte do animal. Descreveu-se a natureza, a localização e a frequência das alterações patológicas macroscópicas e histológicas dos órgãos que compõem o sistema reprodutivo de cutias fêmeas, criadas sob condições de cativeiro no semiárido do Brasil. Foram avaliados através do exame anatomopatológico o aparelho reprodutivo de trinta e nove cutias mortas naturalmente e encaminhadas ao Laboratório de Patologia Veterinária, no período de fevereiro de 2010 a maio de 2015. Destas, constatou-se alterações patológicas no sistema reprodutivo de 10 (25,6 %). No total, 13 alterações foram observadas, sendo que, em alguns animais haviam a coexistência de mais de uma alteração. Assim, as alterações patológicas encontradas foram: endometrite (n=4; 30,8%), piometra (n=3; 23%), retenção de placenta (n=2; 15,4%), maceração fetal (n=1; 7,7%), mumificação fetal (n=1; 7,7%), parto distócico (n=1; 7,7%) e ovários afuncionais (n=1; 7,7%).

Abstract: This paper presents seven distinct reports diseases with reproductive origins that are not yet described in females agoutis (Dasyprocta aguti Linnaeus, 1758), affecting fertility or resulted in the animal's death. The nature, location and frequency of macroscopic and histological pathological changes of the organs that compose the reproductive system of female agoutis, created under conditions of captivity in the semiarid region of Brazil, are described in this article. Were evaluated by pathological examination of the reproductive tract of thirty-nine naturally dead agoutis and sent to the Veterinary Pathology Laboratory in February 2010 to May 2015. From these, it was found pathological alterations in the reproductive system of 10 (25.6%). A total of 13 abnormalities were observed, and in some animals had the coexistence of more than one alteration. Thus, the pathological changes were: endometritis (n=4, 30.8%), pyometra (n=3; 23%), retained placenta (n=2; 15.4%), fetal maceration (n=1, 7.7%), fetal mummification (n=1, 7.7%), dystocia (n=1, 7.7%) and afuncionais ovary (n=1, 7.7%).

The objective of this study was to analyze interactions between different straw sizes and thawing rates on the post-thaw goat semen parameters. Twenty-one ejaculates (seven per animal) were collected from three stud bucks by using an artificial vagina. After evaluation, the semen was extended in Tris-egg yolk-glycerol and packed in 0.25 and 0.50 mL straws, followed by storage in liquid nitrogen. Thawing was performed using two different rates: 37 ºC/1 min and 55 ºC/7 s. The interaction between the 0.5-mL straw and the thawing rate of 55 ºC/7 s promoted higher progressive motility. When the effect of straws alone was analyzed, it was verified that the use of the 0.50 mL straw promoted better conservation than the 0.25 mL one for progressive motility and acrosomal integrity, after the frozen-thawing procedures. Optimal results for progressive motility were achieved when goat semen was frozen in 0.5 mL straws and thawed in water at 55 ºC/7 s.