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Condition score and feeding katahdin expo 2021

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Condition score and feeding katahdin expo 2021

  1. 1. 8/19/2021 1 Body Condition Scoring & Feeding for Stage of Production Dr. Dan Morrical Premier 1 Supplies Ask an Expert morrical@iastate.edu 515-460-1396 My credentials Hoosier by birth, Boilermaker by education Small farm in Indiana Attended Purdue livestock judging and B&B Graduate school NMSU PhD Ruminant Nutrition Sheep Specialist ISU (33 years) Production specialist Premier 1 Supplies Co-developer NSIP 1987 Co-developer Sheep Brands Condition Scoring Very Thin = CS 1 Thin = CS 2 Average = CS 3 Fat = CS 4 Very Fat = CS 5 1 CS change = 11% bodyweight Condition Scoring Hand example Condition score Condition score
  2. 2. 8/19/2021 2 Flushing Rising body condition Increased ovulation 2.5 3.0 3.5 Condition score Drop rate 200% -- 180% -- 160% -- 140% -- 120% -- Over feeding energy Feeding too much grain >1.5 pounds Subclinical acidosis May reduce embryo survival Split grain feedings into smaller amounts Feeding in TMR does not allow grain gorging Breeding Season Management Reproduction is lowly heritable trait Lambs born .1 Lambs weaned .1 Pounds weaned .15 Management can move drop rate up or down 15% Lambs born per ewe is first step to high revenues in every operation Flushing ewes takes energy .5 condition score Ewe wt. 150 200 250 Mixed grass hay 3.0 4.0 5.0 Cracked corn 1.8 2.5 3.0 Soybean meal .4 .5 .6 Premier TM salt .01 .01 .02 Premier ADE .002 .003 .003 Gain .30 .42 .52 CS change 30 days .5 .5 .5 Intake 93% 92% 92% Flushing ewe rations Better pasture Grazing ewes do not need ADE Concise breeding groups Flushing ewes takes energy .5 condition score Ewe wt. 150 200 250 CS pasture 20 25 30 Cracked corn .5 .75 1.0 Premier TM salt .01 .01 .02 Premier ADE Gain .32 .42 .52 CS change 30 days .5 .5 .5 Intake 89% 84% 80% CAUTION
  3. 3. 8/19/2021 3 Mineral status of diet Base ration Mineral intake Concentration of minerals in mineral source Sheep cannot balance their diets Premier 1 Supplies Early Mid gestation Prevent extreme weight changes Prevent stress Allow enough nutrition for placental development Energy and Protein Feed costs are 50% or more of total costs Hay feeding waste tub grind and feed a TMR better feeders Corn silage excellent yield of nutrients per acre already processed energy dense need enough livestock Feed costs are 50% or more of total costs Feed costs are really high currently Midwest in drought No relief in sight Drought corn silage may be the solution fine chopped 35%+ dry matter 300 or so ewes or also cattle Late Gestation Fetal growth Preparation for milking
  4. 4. 8/19/2021 4 Lactation Highest demand Most ewes lose body condition more than .5 cs reduces WW by 5-10% Using condition scoring Do you feed them all more to help a few? Need more pens to have different groups Thin ewes are generally younger or hardest working Change rations on thins sooner (6weeks pre-breeding) Summary CS goals Breeding 3 or better Early Mid 2.5 to 3 Late gestation 3.5 to 4 Lactation 3.5 down to 2.5 Maintenance 2 to 2.5 Questions

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