Sperm
Mostrando 25-36 de 1420 artigos, teses e dissertações.
-
25. Cryopreservation of semen from goats fed a diet supplemented with flaxseed
RESUMO O objetivo com o estudo foi avaliar o efeito da inclusão de semente de linhaça na dieta de machos caprinos sobre a resistência do sêmen frente ao processo de criopreservação. Foram utilizados 16 machos, os quais foram distribuídos em quatro grupos e receberam dieta suplementada com 0, 4, 8 e 12% de semente de linhaça, durante um período de 60
Rev. bras. saúde prod. anim.. Publicado em: 20/12/2019
-
26. Utilização da lipoproteína de baixa densidade, em diferentes concentrações, em meio diluidor para criopreservação do sêmen ovino
RESUMO A utilização da gema de ovo dificulta a padronização de meios diluidores e apresenta riscos biológicos. Assim, este estudo avaliou diferentes concentrações da lipoproteína de baixa densidade (LDL), em substituição à gema de ovo, para a confecção de diluentes para criopreservação espermática em ovinos. Foram utilizados um diluidor contr
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
-
27. Bovine semen thermoresistance tests and their correlation with pregnancy rates after fixed-time artificial insemination
RESUMO O objetivo do presente estudo foi determinar se há ou não correlação entre testes de termorresistência (TT) após descongelamento do sêmen e taxa de prenhez (TP) após inseminação artificial em tempo fixo (IATF). Quatro diferentes TT foram realizados nas 10 amostras utilizadas para a IA; um teste rápido (RTT) (30min/46°C) e três testes lent
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
-
28. Fertility Enhancing Potency of Omega-3 Fatty Acids in Male Rats
Abstract Cases of some grave side effects of some allopathic medicines used in treatment of infertility has caused a global need for alternatives with minimal or no side effect, hence the demand to evaluate the fertility enhancing potential of omega-3 fatty acids (O3FA) in male rats. This study evaluated the fertility enhancing potential of omega-3 fatty aci
Braz. arch. biol. technol.. Publicado em: 28/11/2019
-
29. Comparison of sperm selection techniques in donkeys: motile subpopulations from a practical point of view
Abstract The aim of this study was to compare the post-thaw distribution of motile sperm subpopulations, following simple or colloid centrifugation. A new analysis was used to evaluate the available number of sperm from each subpopulation after each centrifugation protocol. Frozen/thawed semen samples were divided into the following after-thawing treatments:
Anim. Reprod.. Publicado em: 25/11/2019
-
30. Association of L-arginine with heparin on the sperm capacitation improves in vitro embryo production in bovine
Abstract We aimed to evaluate the effects of L-arginine (L-arg) in the quality of in vitro heparin-induced capacitation of cryopreserved bovine spermatozoa and its effects on IVP. The experimental groups were: Control 0 hour without pre-capacitation, and groups of sperm capacitated for 30 min in the absence of COC with heparin (Control 30 min), with 1 mM L-a
Anim. Reprod.. Publicado em: 25/11/2019
-
31. Effect of adenosine concentration on quality of cooled ram semen
ABSTRACT This study analyzed the adenosine concentration on quality of ram semen in different refrigerated storage times at 5 °C. The design was in blocks with repeated-measures factorial design. Five levels of adenosine and four refrigeration times were considered as fixed effects and the animal as random effect (block). Ram semen was diluted with Andromed
R. Bras. Zootec.. Publicado em: 25/11/2019
-
32. Can we use LDL instead of egg yolk in BotuCrio® extender to cryopreserve sperm from the Mangalarga Marchador stallion?
Abstract The objective of this study was to compare the BotuCrio® extender with the Merk - egg yolk and the INRA 82 modified by the inclusion of acetamide, methyl cellulose and trehalose in substitution of glycerol for freezing equine semen. The semen was diluted after centrifugation to obtain 100 x 106 of sperm/ml in: BotuCrio® (control); Merk - egg yolk
Anim. Reprod.. Publicado em: 25/11/2019
-
33. Storage of boar semen at 16-18 °C in the long-term commercial extender prepared with deionized water or nanowater
Abstract The aim of this study was to assess the usefulness of nanowater (NW; water declusterized using cold plasma treatment) as a diluent for a commercial boar semen extender during the 15-day storage (Days 1 to 15) at 16-18 °C. Ejaculates collected from 8 boars were subjected to the standard evaluation and then diluted in the extender prepared with deion
Anim. Reprod.. Publicado em: 25/11/2019
-
34. Low Density Lipoprotein - important player in increasing cryoprotective efficiency of soybean lecithin-based bull semen extenders
Abstract Currently, considering cryopreservation of bull semen, there is no clear consensus over the comparability of cryoprotective efficacy of extenders with soybean lecithin and those based on egg yolk. The objective of this study was to prove the use of Low Density Lipoprotein (LDL) extracted from hen-egg yolk as an enhancing factor for soybean lecithin-
Anim. Reprod.. Publicado em: 25/11/2019
-
35. Concentration of soybean lecithin affects short-term storage success of goat semen related with seminal plasma removal
Abstract The objective of this study was to investigate the need of seminal plasma removal for short-term cooling of buck semen in soybean lecithin (SL) based extender. Each pool was divided equally, and one half was subjected to centrifugation to remove seminal plasma (SP-), while the other half remained with seminal plasma (SP+). Then, both SP+ and SP- sam
Anim. Reprod.. Publicado em: 25/11/2019
-
36. Protein profile as a quality indicator of cryopreserved semen from Tambaqui Colossoma macropomum (Cuvier, 1818)
Resumo O objetivo desse estudo foi de avaliar a associação entre a presença de proteínas no plasma seminal do tambaqui Colossoma macropomum (Cuvier, 1818) com indicadores de qualidade seminal pós-descongelamento. O semen foi criopreservado com diluidor a base de BTS com 8% DMSO. Uma amostra de 200 µL de semen de cada animal foi diluída em 800 µL de B
Braz. J. Biol.. Publicado em: 25/11/2019