Arkansas - Agricultural Communication Services - University of ...
Arkansas - Agricultural Communication Services - University of ...
Arkansas - Agricultural Communication Services - University of ...
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AAES Research Series 488<br />
Table 3. 2000 <strong>Arkansas</strong> DHIA for Official Holstein Herds.<br />
Breeding and reproduction traits Quartile 1 Quartile 2 Quartile 3 Quartile 4<br />
1 st Lact AIPL 1 PTA$ 2 - cows 102.3 0.1 -41.2 51.0<br />
2 nd Lact AIPL PTA$ - cows 73.2 0.6 -76.7 -40.8<br />
3+ Lact AIPL PTA$ - cows 0.5 -13.1 -100.7 -37.6<br />
All lact AIPL PTA$ - cows 22.3 -8.1 -91.0 -3.2<br />
1 st Lact AIPL PTA$ - sires 236.0 173.6 156.8 154.2<br />
2 nd Lact AIPL PTA$ - sires 182.3 142.1 121.7 134.0<br />
3+ Lact AIPL PTA$ - sires 100.5 119.0 65.7 67.4<br />
All Lact AIPL PTA$ - sires 177.6 148.5 103.9 131.8<br />
Days to 1 st service, current 86.9 79.7 72.0 58.1<br />
Days to 1 st service, total 82.8 104.8 69.5 57.5<br />
<strong>Services</strong> per pregnancy, preg. 1.8 1.8 1.1 1.4<br />
<strong>Services</strong> per pregnancy, all 2.5 2.4 1.5 1.8<br />
Average days dry 69.6 74.2 77.5 82.7<br />
Days open 160.0 170.6 224.4 207.2<br />
Projected calving interval (mon) 14.5 14.8 16.6 16.0<br />
Successful first breedings, % 41.0 59.0 31.1 26.1<br />
Successful total breedings, % 38.9 56.3 30.5 28.9<br />
Average percentage <strong>of</strong> heats reported 38.9 26.2 28.2 21.8<br />
% Herd bred to proven sires 75.0 43.6 4.7 17.5<br />
% Herd bred to AI young sires 5.1 3.0 0.8 9.5<br />
% Herd bred to other sires 8.7 53.5 54.6 33.0<br />
1 AIPL = From USDA’s Animal Improvement Programs Laboratory<br />
2 PTA$ = Predicted Transmitting Ability Dollars<br />
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