Short communication: Evaluation of tubal patency in repeat breeder Holstein cows
Aim of study: To evaluate tubal patency in repeat breeder Holstein cows with the purpose of estimating the frequency of oviduct obstruction as a cause of the repeat breeding syndrome.Area of study: Lugo (NW Spain) layer cake chardonnay 2020 Material and methods: In 50 repeat breeding cows, a solution of the dye phenol-sulphon-phthalein (PSP) was in