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The Blackface Sire Reference Company - Linking blackface genetics in Scotland and Northern Ireland An image of a flock of Blackface Sheep Click here to go to the BFELITE Home Page
 

Better Mothers

To ensure a more profitable sheep stock, a hill farmer needs ewes to be better mothers.

 

Compare:

  • 2 tups, bought at a top breeders’ sale in the early 1990’s, (these were obviously bought by eye with no performance data available)
    The tups Sire X and Sire Y were
    • Bought by the same buyer
    • Used on the same farm,
    • To produce ewes lambs born in the same year.
    • These ewe lambs were kept as breeding stock
  • The ewes bred by these two sires were then compared over their productive life.
  • Daughters of Sire X produced on average almost twice as much weight of lamb at 8 weeks each (and every) year, as daughters of Sire Y

The Signet “Sheepbreeder” scheme updates all the performance records of every animal ever recorded and we can now look at the Estimated Breeding Values (EBVs) of Sire X and Sire Y by calculation from their descendants.

Compare these to the scheme average for bfelite animals in 2005.

 

EBVs

Sire X

Sire Y

2005 bfelite Average

8 week Weight

0.04
-0.17
0.64

Mature Size

0.15
-2.63
2.02

Litter Size

0.18
-0.31
0.07

Maternal

0.29
-1.36
0.36

Scan Weight

-0.25
-1.23
1.60

Muscle Depth

1.04
-1.16
0.55

Fat Depth

0.27
-0.56
0.06

Hill 2 Index

151
-51
141

 

None of us wants a tup that performs like Sire Y – but how do you tell when your money is on the line? The answer is to use EBV's

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Ewe with twins
Twins on the hill
Tup Lamb