The objective of the present study was to determine the efficiency of luteal vascularization assessment using color Doppler ultrasonography (US) as a tool for predictive pregnancy diagnosis and at which moment post-insemination this evaluation is more efficient. Adult Santa Inês ewes (n=28)&...

Embryo cryodamage is observed mainly at metabolic and molecular aspects and it impairs post warming quality and survival rates. This study aimed to evaluate the effect of L-carnitine (LC) supplementation during either vitrification or post warming solutions on the 6-7th day of in v...

Despite significant improvements in the in vitro production of cattle embryos, the suboptimal in vitro culture environment still limits the embryo quality and production. Techniques that associate the advantages of in vivo and in vitro systems, such as intrafollicular transfer of immature&#x...

The objective of this study to develop a pharmacological protocol cervical dilatation in ewes Santa Ines aimed at collecting embryos transcervical. Multiparous ewes were used (n=30), cyclic, aged 24 and 48 months, with an average weight of 50.7 ± 5.4 kg and body scores between...

The role of GnRH to synchronize ovulation and follicular emergence previous to superovulatory protocol, started on the first day of the estrous cycle (Day 0), was assessed in Santa Inês ewes. For estrus synchronization, 60 mg medroxyprogesterone acetate sponges were used for 6 d&#x...

Abstract: The objective of this study was to compare protocols for estrus synchronization, using two doses of cloprostenol in different intervals, in Martch, during the breeding season, in Santa Inês ewes, in the city of Cachoeiras de MacacuRJ. A total of 30 ewes (43.9±6.4 kg,...

Ovarian stimulation is an important tool to increase the number of oocytes obtained by laparoscopy for the in vitro production of embryos (IVP). In sheep, different concentrations of FSH administered in single dose (SD) or multiple doses (MD) have been adopted. In parallel, the...

Resumo: O estudo foi realizado com o objetivo de avaliar o desempenho produtivo e consumo de matéria seca e nutrientes em ovinos confinados e alimentados com dietas à base de fenos das gramíneas: capim elefante, capim buffel, capim milhã-roxa e capim urochloa. O ganho de ...

Resumo: O processo de modernização da agricultura brasileira resultou no aumento da dependência dos agricultores familiares, reduzindo sua autonomia e deixando-os à mercê de forças externas. Contudo, existe um contramovimento silencioso, onde os agricultores estão constantemente buscando alternativas de&#x...