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“On our commercial unit milking 190 cows calving all year round we found a big wastage using conventional semen getting 50% bull calves. In 2005 we tried Cogent sexed semen and had tremendous results with 59% holding to first service we got 93% heifer calves. In 2006 we had even better results with 64% holding to first service and 92% heifer calves. The TB restrictions are a continuing issue and we are certainly glad to have the extra replacements available!”

Graham Sanders
Liskeard, Cornwall

“The main reason behind using Cogent sexed semen was to expand the herd to breed better cows. The cows were regularly breeding bull calves and so we really wanted heifers with any surplus being sold. One year we AI'd 15 heifers with 14 holding in calf to the first service. The one that didn't hold we discovered that the straw wasn't thawed properly!”

John Roberts
Knutsford, Cheshire

“Since 2000 Cogent sexed semen has played a significant role in the management of the herd. We source replacements from the top 35 cows and generally we use 1 to 2 straws for each heifer calf produced. Cows not inseminated to sexed semen are put to Blonde bulls with beef cross calves sold at just over a week old!”

Graham Wyrill
East Appleton, Richmond, Yorkshire

“With easier calvings the overall fertility of the herd is a lot better. We especially noticed cows getting back in calf quicker. With 7 years of experience using Cogent sexed semen and strictly following Cogent's guidelines, I tried it on the cows and now I achieve the same results as with conventional semen. I found harmony freezing really made a big difference to the conception rates.”

John MacFarlane
Kilwinning, North Ayrshire

“Expanding the herd from 200 to milk 400 cows was the reason behind using Cogent sexed semen. Buying freshly calved replacement heifers is increasingly expensive so the most cost effective way is to breed our own. We have used Cogent sexed semen from the start and we've found it a great management tool to breed more heifers.”

Keith Agnew
Newry, Northern Ireland