Animal Embryo
Mostrando 1-12 de 180 artigos, teses e dissertações.
-
1. Challenges to increase the AI and ET markets in Brazil
Abstract Artificial insemination (AI) and embryo transfer (ET) are the most widely used biotechnologies in the world with the goal of increasing genetic gain and improving reproductive efficiency of beef and dairy herds. The protocols for ovulation synchronization for timed AI (TAI) or ET (TET) are tools that allow artificial insemination or transfer of a hi
Anim. Reprod.. Publicado em: 28/11/2019
-
2. Oocytes, embryos and pluripotent stem cells from a biomedical perspective
Abstract The veterinary and animal science professions are rapidly developing and their inherent and historical connection to agriculture is challenged by more biomedical and medical directions of research. While some consider this development as a risk of losing identity, it may also be seen as an opportunity for developing further and more sophisticated co
Anim. Reprod.. Publicado em: 28/11/2019
-
3. In vitro embryo production in buffaloes: from the laboratory to the farm
Abstract Transvaginal follicular aspiration technique together with in vitro embryo production are the biotechnological alternatives currently available to support genetic improvement breeding programs in buffalo species. However, aspects related to animal management, lack of knowledge of the metabolic needs and biochemical peculiarities of gametes and embry
Anim. Reprod.. Publicado em: 25/11/2019
-
4. Assessing the association between hypoxia during craniofacial development and oral clefts
Abstract Objectives To evaluate the association between hypoxia during embryo development and oral clefts in an animal model, and to evaluate the association between polymorphisms in the HIF-1A gene with oral clefts in human families. Material and Methods The study with the animal model used zebrafish embryos at 8 hours post-fertilization submitted to 30%
J. Appl. Oral Sci.. Publicado em: 21/05/2018
-
5. Cardio-respiratory development in bird embryos: new insights from a venerable animal model
ABSTRACT The avian embryo is a time-honored animal model for understanding vertebrate development. A key area of extensive study using bird embryos centers on developmental phenotypic plasticity of the cardio-respiratory system and how its normal development can be affected by abiotic factors such as temperature and oxygen availability. Through the investiga
R. Bras. Zootec.. Publicado em: 2016-11
-
6. Teratogenic processes in an embryo without gills and low yolk absorption of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae)
Resumo Este é o primeiro relato de anomalias morfológicas em embriões de Zapteryx brevirostris, espécie comum no Brasil. As brânquias estiveram ausentes, e as nadadeiras peitorais mostraram-se assimétricas e não totalmente formadas e fundidas à cabeça. A nadadeira esquerda, a maior, se projetou destacadamente em direção à cabeça, quase alcançan
Braz. j. oceanogr.. Publicado em: 2015-12
-
7. Comparison of breeding value prediction for two traits in a Nellore-Angus crossbred population using different Bayesian modeling methodologies
The objectives of this study were to 1) compare four models for breeding value prediction using genomic or pedigree information and 2) evaluate the impact of fixed effects that account for family structure. Comparisons were made in a Nellore-Angus population comprising F2, F3 and half-siblings to embryo transfer F2 calves with records for overall temperament
Genet. Mol. Biol.. Publicado em: 14/11/2014
-
8. 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
-
9. Use of long-acting progesterone to acyclic embryo recipient mares
The objective of this study was to evaluate the efficiency of cyclic and acyclic progesterone-treated recipient mares in a commercial embryo transfer program. Acyclic recipients were treated with decreasing amounts of estradiol cypionate (ECP® - Pfizer Saúde Animal, São Paulo, Brazil), followed by 1500 mg of a sustained-release progesterone injection (P4L
Revista Brasileira de Zootecnia. Publicado em: 2012-03
-
10. Interferência da infecção experimental pelo vírus da diarréia viral bovina (BVDV) na eficácia da produção in vitro de embriões bovinos
Os materiais de origem animal utilizados na produção in vitro (PIV) de bovinos podem apresentar-se contaminados pelo vírus da diarréia viral bovina (BVDV) quando provenientes de animais infectados. Tendo isso em vista é importante realizar estudos aplicados para minimizar a transmissão de patógenos via biotécnicas de reprodução. Os objetivos desse
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
11. Avaliação do potencial de recuperação oocitária, produção de embrião e gestação em doadoras da raça GIR / Assessment of oocyte recovery potential, production Pregnancy and embryo donors Gir
A produção de embriões bovinos teve um aumento acentuado na última década. No Brasil, esse aumento foi diretamente relacionado à melhoria da produção de embriões in vitro, particularmente em rebanhos leiteiros. O presente experimento utilizou a ultrassonografia transvaginal para a aspiração de folículos ovarianos e produção in vitro de embriõe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/05/2011
-
12. Protocolos hormonais de preparação de doadoras bovinas para produção de embriões in vitro / Different protocols to bovine donor preparation for in vitro embryo production
Efficiency of in vitro bovine embryo production has been affected by low quantity and quality of recovered oocytes from ultrasound-guided follicular aspiration (OPU). The objective of this study was to evaluate the effect of different synchronization of follicular wave protocols in the production of oocytes and embryos in vitro, of Bos taurus taurus and Bos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011