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Bovine sperm cell motility after incubation in follicular fluid PAB
Vargas Júnior,Sergio Farias; Costa,Vitória Gasperin Guazzelli; Oliveira,Fernando Caetano de; Goularte,Karina Lemos; Haas,Cristina Sangoi; Gasperin,Bernardo Garziera; Lucia Júnior,Thomaz.
Abstract: The objective of this work was to evaluate sperm cell motility after intrafollicular artificial insemination (IFAI) in vivo or after incubation in follicular fluid in vitro. In the in vivo experiment, IFAI was performed, followed by the recovery of follicular content 1 to 4 hours later, in order to assess sperm motility. In the in vitro experiment, spermatozoa from a pool of commercial frozen-thawed semen were evaluated for their kinetics after incubation for 1 or 3 hours, either pure (pool, control group) or in follicular fluid (FF). A low motility of sperm cells was observed in the FF samples, both in vitro and in vivo. In vitro, the main parameters negatively affected in the sperm cells incubated in FF, compared with the control, were: total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Infertility; Insemination; Intrafollicular artificial insemination; Spermatozoa.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000700866
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Prepartum progestagen supplementation in swine: a strategy to facilitate piglet care and prevent early parturition Ciência Rural
Haas,Cristina Sangoi; Santos,Monike Quirino dos; Rovani,Monique Tomazele; Santos,Joabel Tonellotto dos; Mellagi,Ana Paula Gonçalves; Bortolozzo,Fernando Pandolfo; Gasperin,Bernardo Garziera; Gonçalves,Paulo Bayard Dias.
ABSTRACT: Gestation length in swine has a considerable amplitude and both early and delayed parturition are common. This variation increases the occurrence of unassisted farrowing and could lead to a wide-ranging age at weaning for piglets born from one batch. Supervision of sow parturition is crucial to reduce mortality of neonate piglets. To facilitate assistance, induction of farrowing using prostaglandin F2α (PGF) has been widely used in batch farrowing systems, whereby synchronization would concentrate the time of farrowing, allowing for better organization of employees. However, a viable alternative method that can be implemented to manage farrowing is to sustain high progestagen levels in the final days of gestation and, consequently, prevent early...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Farrowing induction; Intravaginal device; Progestagen; Early parturiton.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100652
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