This presentation was given at the International Goat Symposium in Lindsay, Ontario, Canada on September 19, 2007. “Profits Through Genetics”. Genetic Improvement Through Central Buck Testing Lessons and Opportunities.
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“Profits Through Genetics”
Susan SchoenianSheep and Goat SpecialistWestern Maryland Research & Education CenterUniversity of Maryland Cooperative Extensionhttp://www.mdgoattest.blogspot.com
I’m a pretty boy!
Yes, but what’s your average daily gain and how many times have you been dewormed?
You can’t judge a book by its cover.
Lags behind other animal industries in the use of performance records.
Selection decisions are made primarily on the basis of appearance.The U.S. Meat Goat Industry
On-farm performance record keeping performance records.
Adjusted weights, ratios, indexes
Central performance testing
Ram, buck, bull, and boar tests
Central performance record keeping
BLUP -- EPD’s and EBV’s
Across herd, across breedMethods of genetic improvement
12007 drought necessitated use of nutritional tubs and hay.
Kiko, Boer, Kiko x Boer, dairy x meat
Managed as a single group on pasture. performance records.
Checked 1 to 2 times per day.
Handled every two weeks for data collection and general health monitoring.Test protocol/management
Average daily gain (ADG)
2006 – 0.190 lbs. (86 g) per day2007 – 0.235 lbs. (107 g) per day
FAMACHA performance records.© scores every two weeks.
1,2 – do not deworm
4,5 – deworm with moxidectin
3 - ?????
Scores of other goats
Body condition score
Average daily gain
Condition of hair coatParasite resilience Ability to maintain production in the face of infection with parasites.
FAMACHA© scores estimate packed cell volume (PCV) [blood hematocrit.
2006 – 1.65 treatments per goat2007 – 0.09 treatments per goat
I’m not just a pretty boy.
Thank you for your attention. performance records.