Superovulation
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Produção de embriões em ovinos Morada Nova e Somalis Brasileira
ABSTRACT Superovulatory response and embryo yield in 19 Morada Nova and 20 Somalis Brasileira ewes was analyzed. All animals were synchronized with the insertion of an intravaginal device (CIDR(r)) on Day 0, replaced by a new device on Day 7, which remained in place until Day 14 and superovulated with 133mg of porcine FSH (pFSH) in decreasing doses at 12h in
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2016-10
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2. Effect of follicular wave synchronization on superovulatory response of Girolando embryo donors
The objective of this study was to evaluate the effect of the follicular wave synchronization method on the superovulatory response of Girolando embryo donors. Seven cows and five heifers were divided into three treatments according to the method of the follicular wave synchronization prior to superovulation. The donors were superovulated with eight FSH decr
R. Bras. Zootec.. Publicado em: 2014-11
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3. Effect of breed and corpus luteum on pregnancy rate of bovine embryo recipients
The objective of this study was to evaluate pregnancy rates of recipients of different breed groups (Nellore and crossbreed), as well as the effects of size and type of the corpus luteum (CL) on plasmatic concentrations of progesterone and pregnancy rates of embryo recipients. A total of 152 heifers were synchronized with progesterone implants and on the day
R. Bras. Zootec.. Publicado em: 2012-09
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4. The association of two single nucleotide polymorphisms (SNPs) in growth hormone (GH) gene with litter size and superovulation response in goat-breeds
Two active mutations (A 781 G and A 1575 G) in growth hormone (GH) gene, and their associations with litter size (LS), were investigated in both a high prolificacy (Matou, n = 182) and a low prolificacy breed (Boer, n = 352) by using the PCR-RFLP method. Superovulation experiments were designed in 57 dams, in order to evaluate the effect of different genotyp
Genetics and Molecular Biology. Publicado em: 22/12/2010
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5. Immunological response to equine chorionic gonadotropin (eCG) in Bos taurus and Bos indicus heifers / Resposta imunológica contra gonadotrofina coriônica equina (eCG) em novilhas Bos taurus e Bos indicus
O presente trabalho foi realizado em duas etapas experimentais. O objetivo do Experimento 1 foi avaliar o perfil de produção de anticorpos anti-eCG em novilhas Bos taurus e Bos indicus tratadas uma, duas ou três vezes, com 400 e com 2000UI de eCG. O experimento foi realizado em duas réplicas com o mesmo desenho experimental, porém com padrões raciais d
Publicado em: 2010
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6. eCG e densidade vascular em úteros bovinos / eCG and vascular density of bovine uterus
Follicle dynamic, as well as the uterus preparation for gestation, is dependent of an adequate vascularization establishment. Currently, many studies point towards the importance of eCG treatment following fixed-time artificial insemination (FTAI), in a manner to improve ovulation and gestational rates. Moreover, eCG have been implicated in angiogenesis, lea
Publicado em: 2009
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7. Oocyte development in cattle: physiological and genetic aspects
Oocytes in cattle are formed during embryogenesis and develop within individual follicles in the cortex of the ovary. Dormant primordial follicles become active and undergo progressive development at regular intervals commencing during the late fetal stage and continuing throughout adulthood. Once activated, follicles and oocytes in a cohort either grow to m
Revista Brasileira de Zootecnia. Publicado em: 2008-07
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8. Função ovariana e produção de embriões em novilhas da raça Nelore submetidas a baixa ou alta ingestão alimentar. / Ovarian function and embryo production in Nelore heifers with low or high feed intake
Este trabalho avaliou o efeito da nutrição na função ovariana e produção de embriões em novilhas da raça Nelore. Novilhas púberes foram submetidas a alta (A, n=20) ou baixa (B, n=19) ingestão, recebendo alimentação à vontade (170%) ou 70% da dieta de manutenção, respectivamente. Foram realizados acompanhamento através de ultra-sonografia tran
Publicado em: 2008
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9. Expressão de fatores angiogênicos em corpo lúteo cíclico e superovulado de búfalas / Expression of angiogenic factors in cyclic and superovulated bufallo corpus luteum
Biotechniques can be an effective way of improving reproduction efficiency and enhancing the production of genetically superior animals. The superovulatory treatment is a common technique aiming to spread desired genetical material, although its use in buffalos still presents limitations, mainly the low embryo recovery rate. The corpus luteum (CL) is a tempo
Publicado em: 2008
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10. Efeitos da exposição crônica à poluição atmosférica particulada sobre o desenvolvimento embrionário pré-implantacional in vitro em camundongos / Effects of chronic exposure to particulate air pollution on in vitro preimplantation embryo development in mice
A thematic research project to evaluate the health effects of acute/chronic exposure to ambient air in a large urban center was developed at the Air Pollution Laboratory in the Department of Pathology at the University of São Paulo School of Medicine. Within this project a specific research line was committed to the study of the effects of this exposure on
Publicado em: 2008
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11. Different superovulation protocols with fixed time artificial insemination in Bos taurus and Bos indicus / Diferentes protocolos de superovulação com inseminação artificial em tempo fixo em Bos taurus e Bos indicus
This study is presented in Chapter 1 (Superovulations protocols with FTAI for Bos taurus) and Chapter 2 (Superovulation protocols with FTAI for Bos indicus), in this Chapter are included three experiments [1 - Moment of the application of LH in cows Nelore (Bos indicus); 2 - Effect of the injectable progesterone administration in the day 0 in Nelore cows; 3
Publicado em: 2007
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12. Resposta superovulatória após ablação folicular usando um dispositivo simplificado em bovinos (Bos taurus taurus) / Superovulatory response following follicle ablation using a simplified transvaginal device in beef cattle (Bos taurus taurus)
A influência do momento da ablação do folículo dominante antes do início do tratamento superovulatório, e seu efeito sobre a dinâmica folicular ovariana e a taxa de produção de embriões, ainda permanece indeterminada em bovinos. O presente estudo foi desenvolvido com objetivo de avaliar a resposta superovulatória de fêmeas da raça Limousin, dete
Publicado em: 2007