September - AHDB Beef & Lambbeefandlamb.ahdb.org.uk/wp-content/uploads/2016/09/Update-on-Ra… ·...
Transcript of September - AHDB Beef & Lambbeefandlamb.ahdb.org.uk/wp-content/uploads/2016/09/Update-on-Ra… ·...
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Update: Consultant WorkshopSeptember 2016
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Experimental design• Direct comparison of the progeny of rams from five terminal sire breeds
• Identify those rams with the most profitable genes for commercial sheep production
• Testing 67 rams over two years• Rams chosen were top 20% EBVs for carcase traits
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Partnership• Six commercial flocks across GB• 16 organisations• Data collection – 3,000 commercial lambs/year
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Not FarmCompare…
….or FarmerCompare
Remember this it Ram Compare
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Project aims• Use progeny performance to compare genetically different rams– Use commercially collected data in genetic evaluations– Could help validate Combined Breed Analysis
• Identify genes with the biggest impact on speed of finishing and carcase value
• The degree of difference between breeding lines for new traits ‐ saleable meat yield & tenderness
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Data collection ‐ lambing
• Date of birth• Birth type / rear type (single or twin)
• Birth weight / lambing ease• Death• Fostering
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Data collection – growth
• 56 day weight• 90‐120 day weight, ultrasound muscle and fat depth
• Pre‐slaughter weights• Ewe body condition score• DNA sample
– Parentage, abattoir checks
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Lamb selection• AB Sustain, Dunbia and Randall Parker• 15‐22kg carcase / R 2‐3H • Final weight at 22 week weight• Consistency between farms and abattoirs– Same pre‐slaughter lairage– Interval between killing and cutting
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Data collection ‐ abattoir
• Sale weight & carcase weight‐ calculate killing‐out %
• Conformation & fat classification
‐ compare against sires values
• Primal meat yield & tenderness measurements
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DNA sampling
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RamCompareJoin in at home……
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AI Team 2016/2017
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AI Team 2016/2017
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Sam Boon’s not Kirsty Moore’s
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Project outcomes 2017
• Ram comparisons irrespective of breed – using EBVs• November 2017 ‐ lists of the top 25 rams
– Progeny growth rates – Progeny carcase traits – Index
• New EBVs for days to slaughter & carcase weight
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Other research: Combined breed analysis
• Currently available in Ireland, New Zealand and Australia
• RamCompare data would help validate a new UK terminal sire evaluation
• Allows multiple breed evaluation. Animals from different breeds can be compared via the resulting EBVs
• UK version available to Signet clients soon
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Thank you
Thank You & Questions