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Across-country test-day model evaluations for Holstein, Nordic Red Cattle, and Jersey  Martin H. Lidauer, Jukka Pösö, Jørn Pedersen, Jan Lassen, Per Madsen,

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Presentation on theme: "Across-country test-day model evaluations for Holstein, Nordic Red Cattle, and Jersey  Martin H. Lidauer, Jukka Pösö, Jørn Pedersen, Jan Lassen, Per Madsen,"— Presentation transcript:

1 Across-country test-day model evaluations for Holstein, Nordic Red Cattle, and Jersey 
Martin H. Lidauer, Jukka Pösö, Jørn Pedersen, Jan Lassen, Per Madsen, Esa A. Mäntysaari, Ulrik S. Nielsen, Jan-Åke Eriksson, Kjell Johansson, Timo Pitkänen, Ismo Strandén, Gert P. Aamand  Journal of Dairy Science  Volume 98, Issue 2, Pages (February 2015) DOI: /jds Copyright © 2015 American Dairy Science Association Terms and Conditions

2 Figure 1 Calving age effect by breed on second lactation test-day milk yield in synthetic Danish Red Cattle. Synthetic Danish Red=a cow with a breed composition of 65% Nordic Red Cattle, 14% Brown Swiss, and 21% Holstein. Journal of Dairy Science  , DOI: ( /jds ) Copyright © 2015 American Dairy Science Association Terms and Conditions

3 Figure 2 Average protein yield index for Holstein cows by year of birth. One index point equals 7.9% of the genetic standard deviation. Journal of Dairy Science  , DOI: ( /jds ) Copyright © 2015 American Dairy Science Association Terms and Conditions

4 Figure 3 Average protein yield index for Nordic Red Cattle cows by year of birth. One index point equals 7.9% of the genetic standard deviation. Journal of Dairy Science  , DOI: ( /jds ) Copyright © 2015 American Dairy Science Association Terms and Conditions

5 Figure 4 Average protein yield index for Jersey cows by year of birth. One index point equals 6.8% of the genetic standard deviation. Journal of Dairy Science  , DOI: ( /jds ) Copyright © 2015 American Dairy Science Association Terms and Conditions

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