Select Mating Service (SMS)
|Percent Inbreeding Calculation|
|One generation between parents||50 percent|
|Two generations between parents||25 percent|
|Three generations between parents||12.5 percent|
|Four generations between parents||6.25 percent|
|Five generations between parents||3.125 percent|
|Six generations between parents||1.56 percent|
|Seven generations between parents||.78 percent|
There is no doubt about it, inbreeding reduces the productivity and profitability of a herd. Inbreeding is a major concern of the genetics department at Select Sires. Consistently their recommendation is to use SMS to manage this important drain from your profitability. SMS allows in-depth pedigree information to be incorporated into the SMS program to help manage inbreeding levels and prevent the losses they cause. The value of accurate parentage identification will continue to grow due to the escalating inbreeding levels of today.
To demonstrate the importance of managing inbreeding the Council on Dairy Cattle Breeding calculates the average each year, click here to see current trends. One can easily see since the genomic era began inbreeding is increasing at a faster rate. The SMS program can provide an accurate analysis of your herd and take this information to assist in sire selection.
"Overall the herd is a lot nicer with better feet and legs and udders. It saves a lot of time and I'm confident in my genetic consultant's recommendations − he sees a lot of cows. The greatest benefit is not worrying about inbreeding. We used to use three or four different suppliers which cost me time. Select Sires has good bulls and a good reputation so I'm comfortable relying on them for genetics. "
-Kevin Eisenga, Sunshine Acres, Marion, Mich., 320 cows
Estimated future inbreeding coefficients:
When you have used great sires that have a positive influence on the Holstein breed, you want to also use their great sons and grandsons. SMS identifies the cows that can be bred to those sires, providing you the comfort of knowing inbreeding levels are managed and genetic return is maximized.
For each one percent inbreeding increase, a herd experiences:(1)
- -24 Lifetime NM$
- +.36 days age at first calving
- -13 days Productive Life
- -790 lbs lifetime milk production
- -25 lbs lifetime protein production
- +.26 month first calving interval
The cost of each additional day a dairy cow is open, beyond the herd's voluntary waiting period, can range from $3.19 to $5.41 per cow per year.(2)
(1) Cassell, B.G. Effect of inbreeding on cow performance and mate selection in dairy cows; Proceedings of the Western Dairy Management Conference; 1999.
(2) De Vries, A; Determinants of the cost of days open in dairy cattle; Proceedings of the 11th International Symposium on Veterinary Epidemiology and Economics; 2006.