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.
“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.