Influence of insemination time on the fertility of sex sorted frozen-thawed Y-sperm in red deer

The aim of this study was to assess the effect of insemination timing on pregnancy rates in red deer (Cervus elaphus) when using sex-sorted sperm samples. Semen was collected by electroejaculation from 8 mature stags and processed to obtain: Conventional samples, following standard freezing procedures for commercial purposes; Control sorted samples, diluted and handled as per sorted samples but without being submitted to the sorter passage; and Y Sex Sorted (YSS) samples. Hinds were synchronized via intravaginal CIDR (Controlled Internal Drug Release) placement and given eCG (Folligon ® PMSG Serum Gonadotrophin) on day 12, upon CIDR removal.

Source: Theriogenology - March 9, 2018 Category: Genetics & Stem Cells Authors: Luis Anel-L ópez, Olga Garcia-Álvarez, Tatiana Tarantini, David Del Olmo, Jose Antonio Ortiz, Sergio Ledda, Emilio Arsenio Martinez, Ana J. Soler, Jordi Roca, María R. Fernández Santos, Juan Maria Vázquez, Inmaculada Parrilla, Jose Julián Garde Source Type: research