Transcript Castle Milk Moorit Breeding Programme

Castle Milk Moorit Breeding
Programme
May 2007 Update
Very early days but still good progress
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With your help we have a improved the data available to us for decision
making
We have wide-spread awareness by members of the actions they could take to
be part of the programme
We have tangible evidence of people considering genetic line when choosing
rams to keep/buy
Highlights so far
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Increased the number of sheep with ‘significant’ line 1 genetics from 139 to 167 (20%)
Increased the number of sheep with ‘significant’ line 2 genetics from 235 to 253 (7.6%)
Increased the number of sheep with ‘significant’ line 3 genetics from 249 to 276 (10.8%)
Maintained or enhanced the overall percentage of Lines 1, 2 and 3 in the overall flock ie we
have stopped the decline
We need to work on
– Continuing to preserve the male lines
– Where possible ensure the preserved male lines are matched to females with the same
genetic lines
June 2006 vs May 2007
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All data assumes:
– Birth notified animals born over 4 years ago that have not been registered are
dead or permanently non-breeding
– Castrates have been excluded from all figures
– Animals over 10 years old are non-breeding
• A review of current data shows that out of 130 ewes over 10 years shown
as alive in the flock book only 5 had lambs registered in 2006.
– The original analysis data was checked and amended to ensure it used the
same principles (it assumed animals over 10 years were dead but did include
older birth notified animals)
– 2007 Data includes all animals notified/registered up to 1 May and does
include some 2007 lambs.
– ‘Significant‘ is:
• Greater than
• Greater than
• Greater than
0.05%
1%
2%
line 1
line 2
line 3
genetics
genetics
genetics
Ram Data
70.0%
300
60.0%
250
50.0%
200
2006
150
2007
100
40.0%
2006
30.0%
2007
20.0%
50
10.0%
0
0.0%
Line 1
Line 2
Line 3
Rest
Line 1
Line 2
Line 3
Rest
Number of significant rams as % of total
ram flock
Number of significant rams vs ‘the rest’
1
0.8
0.6
2006
0.4
2007
0.2
0
% line 1
% line 2
% line 3
% of line genetics in the total ram flock
We have increased the absolute number of genetically significant rams in all 3 lines and
increased the % of rams in the flock carrying significant line 1 genetics but the overall %
of these lines in the flock is still very small, but with both line 2 and 3 improving.
Ewe data
70.0%
1200
60.0%
1000
50.0%
800
2006
600
2007
40.0%
2006
30.0%
2007
400
20.0%
200
10.0%
0.0%
0
Line 1
Line 2
Line 3
Line 1
Rest
Line 2
Line 3
Rest
Number of significant ewes as % of total
ewe flock
Number of significant ewes vs ‘the rest’
1
0.8
0.6
2006
0.4
2007
0.2
0
% line 1
% line 2
% line 3
% of line genetics in the total ewe flock
The absolute number of genetically significant ewes has increased only slightly and as a % of the total
ewe flock has fallen. This may be due to significant ewes becoming non-breeding as they age, an effect
that is less pronounced in rams as we have much fewer 9+ year old rams still alive. Overall the total
flock % is holding steady inspite of these loses and a large increase in ewe numbers (+362)
Total flock data (2104 sheep as at 1/5/07)
70.0%
1600
60.0%
1400
50.0%
1200
1000
2006
800
2007
600
400
40.0%
2006
30.0%
2007
20.0%
10.0%
200
0.0%
0
Line 1
Line 2
Line 3
Line 1
Rest
Number of significant sheep vs ‘the rest’
Line 2
Line 3
Rest
Number of significant sheep as % of total
flock
1
0.8
0.6
2006
0.4
2007
0.2
0
% line 1
% line 2
% line 3
% of line genetics in the total flock
The absolute number of genetically significant sheep has increased overall but as a % of the total
flock has fallen because of the ewes. Though due to the efforts to preserve more of the significant
rams the overall total flock % is holding steady and for line 3 increasing.