Semex expands Immunity+ with new additions

Semex’s genetic technology pipeline continues to develop its unique offering to help UK dairy farmers breed inherently healthier cows and reduce antibiotic use, with three new sires introduced to the firm’s growing Immunity+ portfolio, two of which are also A2A2 sires. 

Immunity+ sires are exclusive to Semex and only gain this designation after having been tested and shown to have genes which confer the highest levels of immunity. The science behind Immunity+ has recently been validated in the real world through a large-scale study involving 75,000 heifers and 30,000 cows which showed that daughters of Immunity+ sires have significantly lower levels of most common diseases, compared to daughters of non-Immunity+ sires.

The bulls are:

Progenesis Unicorn, an Altaspring son, who tops the billing of the three on PLI with a score of £720, putting him in the top echelons of genomic sires available in the UK. A great blend of milk (+583kg), positive fat & protein %, low SCC at -24, and tremendous daughter fertility (+14.8) make him ideal for breeding productive, fertile, profitable cows. He will sire moderate-sized daughters, and adding to his credentials is his A2A2 status.

View-Home Buffalo, also an Altaspring son, is out of View-Home MCC Alabama (Albania’s dam), and is the second A2A2 sire. His Milk is +482kg, he is positive for fat percentage, and he also has a very good Fertility Index (+10.4) showing his daughters get back in-calf easily. His Type Merit scores strongly at +3.16, with Mammary and Legs & Feet scores of +2.80 and +2.27 respectively, and he will produce daughters with excellent frames, good rump shape and great legs and feet, say Semex’ sire analysts. 

Siemers Bloomfield will breed cows around average size with a lower maintenance requirement, but who punch way above their weight on milk components. He has a PLI score of £675, an excellent fat percentage of +0.41% and a good protein percentage of +0.06%. His high Fertility Index of +11.3 shows he will also breed daughters that are very fertile. Bloomfield is also low on his cell counts, at -20.

“These three new Immunity+ sires provide a good selection of high PLI, components and type, together with excellent health and fertility credentials to meet the needs of UK dairymen whatever their system and requirements,” says Michael Dennison, Semex UK’s sales manager.

“Our genomic bar is rising every year thanks to the continual investment in genomic and Immunity+ technology, and these sires are testimony to that,” he concludes.