Vergani, Gabriel Brun Fonseca, Jeferson Ferreira da Trevizan, Juliane Teramachi Pereira, Verônica Schinaider do Amaral Garcia, Alexandre Rossetto Esteves, Sergio Novita Brandão, Felipe Zandonadi Souza-Fabjan, Joanna Maria Gonçalves Oliveira, Maria Emilia Franco
Published in
Animal reproduction science
This study was conducted in ewes to assess effects of human chorionic gonadotropin (hCG) administration after imposing an estrous induction treatment regimen. Ewes (n = 115) were treated with a 60 mg medroxyprogesterone-intravaginal-sponge for 6 d plus 200 IU of equine chorionic gonadotropin (eCG) im and 37.5 μg d-cloprostenol im 36 h before sponge...
Checura, Celina M Momont, Harry W Castañeira, Catalina Flores-Bragulat, Ana Losinno, Luis
Published in
Animal reproduction science
In horses, prostaglandin E2 (PGE2) is produced by embryos around Day 5 post-ovulation; PGE2 functions directly at the oviduct promoting embryo transport into the uterus. Non-surgical collection of horse embryos for cryopreservation is recommended at Day 6.5-7 post-ovulation. It was proposed that misoprostol administered orally will hasten oviductal...
Figueira, Lucas Machado Alves, Nadja Gomes Maia, Ana Lucia Rosa E Silva Souza-Fabjan, Joanna Maria Gonçalves Batista, Ribrio Ivan Tavares Pereira Arrais, Aline Matos Lima, Renato Ribeiro Oliveira, Maria Emilia Franco Fonseca, Jeferson Ferreira
Published in
Animal reproduction science
This study was conducted to assess effects of different doses of pFSH on follicular recruitment, superovulatory response, ova/embryo recovery, and embryo yield in lactating ewes. Ewes (n = 24) had a superovulation treatment regimen imposed. All ewes were implanted with a progesterone intravaginal device for 9 d, and administered either 100 (G-100) ...
Lewchalermwong, Duangkamol Tummaruk, Padet Knox, Robert V
Published in
Animal reproduction science
The gonadotropin compound, PG600, is used to induce estrus in prepubertal gilts, but responses can be variable. This study was conducted to evaluate PG600 effects on follicles, estrus, ovulation and estrogen production. Prepubertal gilts (n = 50) were treated with PG600. Gilts were evaluated for estrus while daily boar exposure was occurring. A sub...
Brito, Lindomar Sousa Maggitti Junior, Luiz Di Paolo Ferraz, Priscila Assis Vasconcelos, Isabela Costa Carvalho, João Vitor Gomes da Silva Loiola, Marcus Vinicius Galvão Bittencourt, Rodrigo Freitas Madrigal-Valverde, Mónica Cavalcante, Ana Karina da Silva Barbosa, Larissa Pires
...
Published in
Animal reproduction science
Objectives were to evaluate effects of a smaller than typically used dose of equine chorionic gonadotropin (eCG) during a fixed-time artificial insemination (FTAI) treatment regimen. Transrectal ultrasonic (US) examinations were conducted on dairy cows on Day 0 (D0) and the treatment regimen was initiated with administrations of an intravaginal pro...
Watter, K Thomas, E White, N Finch, N Murray, P J
Published in
Animal reproduction science
Sambar (Rusa unicolor) are the most numerous and rapidly expanding of Australia's six introduced deer species, however, there is little information about the reproductive biology of sambar deer in their natural habitat. To better predict and manage wild sambar populations in Australia it is important to understand their reproductive seasonality and...
Stornelli, María Cecilia Praderio, Romina Giselle García, María F Favre, Romina Nuñez García Mitacek, María Carla Castro, Gimena Gomez la Sota, Rodolfo Luzbelde Stornelli, María Alejandra
Published in
Animal reproduction science
Wolak, Dominika Sechman, Andrzej Hrabia, Anna
Published in
Animal reproduction science
Several metalloproteinases (MMPs) are present and functional in the chicken ovary and regulate the extracellular matrix (ECM) during follicle development, ovulation, atresia, and regression. The regulation of the abundance of MMPs in avian ovarian follicles, however, is largely unknown. The aim of the present study was to examine effects of equine ...
Nowosad, Joanna Kucharczyk, Dariusz Sikora, Mateusz Kupren, Krzysztof
Published in
Animal reproduction science
Fertilization is one of the most important procedures in artificial reproduction and it directly affects the reproduction outcome. When there is optimization of fertilization, there can be a positive effect on subsequent reproductive processes and economic aspects of aquaculture. This study was conducted to determine time for which oocytes and sper...
Li, Xilei Chen, Tiantian Jiang, Hucheng Huang, Jiawei Huang, Mengting Xu, Ruihan Xie, Qiming Zhu, Haojie Su, Shiping
Published in
Animal reproduction science
Methyl farnesoate (MF), a de-epoxidized form of juvenile hormone (JH) Ⅲ in insects, may regulate developmental processes such as reproduction and ovarian maturation in crustaceans. Krüppel homolog 1 (Kr-h1) is a target response gene for the methoprene-tolerant (Met) protein that is a component of the JH signaling pathway in insects. In the present ...
