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VikingNews Global 1-2019
15 / 28
table 1 additional profit from using different levels of
beef
semen
in cows, in a 200-cow herd, without (blue bars) and with (grey bars)
genomic
testing of all heifers. all values are in euro with
genomic
seleccion without
genomic
seleccion results percentage of cows inseminated with
beef
semen
150 120 90 60 30 0 -30 -60 30% 40% 50% 60% 70% 80% extra profit per year (x 100 euro) mic testing at herd level, given differ- ent use of
beef
semen
for the cows, can be seen. the assumptions used reflect a nordic dairy herd with good management. improved breeding strategy increases profit in a simulation farm with 200 cows and earning from 5,500 euro to 12,400 euro extra per year using be- tween 30 and 60%
beef
semen
, the highest profit is obtained when using 60%
beef
semen
. the reason why the extra profit is reduced when 70%
beef
semen
is used and becomes neg- ative with 80%
beef
semen
, is due to the lack of replacement heifers. fur- thermore, the results show that by using
genomic
testing you can earn 900 to 1000 euro extra when using 60%
beef
semen
. conclusion use of
beef
semen
and sexed
semen
in combination with
genomic
testing will increase profit levels for a great majority of dairy producers with above average management level. herd assumptions: ? replacement rate: 33% ? reproduction efficiency: 25% ? percentage of heifers inseminated with sexed
semen
: 75% ? accuracy of
genomic
tests: 60% 15 may 2019 | vikingnews
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