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Lambing rate of Purebred Ewes and Their Crosses Breed PB Crossbred Ewe Composition

Lambing rate of Purebred Ewes and Their Crosses Breed PB Crossbred Ewe Composition Rambouillet 1.50 25 50 50 25 25 Dorset 1.70 50 25 25 25 50 Texel 1.85 25 Suffolk 1.95 25 50 Finn sheep 2.90 25 50 Romanov 4.00 25 50

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Lambing rate of Purebred Ewes and Their Crosses Breed PB Crossbred Ewe Composition

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  1. Lambing rate of Purebred Ewes and Their Crosses Breed PB Crossbred Ewe Composition Rambouillet 1.50 25 50 50 25 25 Dorset 1.70 5025 25 25 50 Texel 1.85 25 Suffolk 1.95 25 50 Finn sheep 2.90 25 50 Romanov 4.00 25 50 Mature ewe 1.78 1.73 1.96 2.32 2.33 2.94 Whole flock 1.58 1.60 1.76 2.08 2.09 2.63 Leymaster, Meat Animal Research Center

  2. Percent Increasevia Crossbreeding Trait Lamb Ewe Birth weight 3.2 5.1 Weaning wt 5.0 6.3 PW gain 5.3 Conception 2.6 8.7 Lambing 2.8 3.2

  3. Percent Increasevia Crossbreeding, cont. Trait Lamb Ewe Survival BW 9.8 2.7 LB/EE 5.3 11.5 LW/EE 15.2 14.7 Pounds wean 17.8 18.0

  4. Crossbreeding Systems • Simple Rambouillet ewes mated to Suffolk rams • Complex 3 breed maternal rotation mated to Hampshire rams

  5. Simple System replacement females one breeding pasture no records Suffolk rams Rambouillet ewes SR offspring all to slaughter

  6. Combination system Rambouillet ewes DorFin rams Suffolk rams DFR females DFR males to market S-DFR offspring all to slaughter

  7. Two Breed Rotational System Polypay ram PS ewes SP ewes Suffolk ram Suffolk ram PS ewes SP ewes Polypay ram

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