Why is this important? Two different topics. Op)mizing feed withdrawal length and fiber levels prior to marke)ng on net return.

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1 Op)mizing feed withdrawal length and levels prior to marke)ng on net return Thank you for par-cipa-ng in PorkBridge To start the presenta-on, advance one slide by pressing enter or the down arrow or right arrow key. HyaA Frobose and Mike Tokach Kansas State University Two different topics 2 Why is this important? 3 1. Removing pigs from feed prior to market 2. Switching pigs from higher to lower diet prior to market Feed remaining in pig at market Measured as reduc)on in yield, but same net carcass weight lb $0.1/lb = $0./pig Yield reduc)on due to 0.6 to 1.% 0.% reduc)on = 1.6 lb/pig = > $1.40/pig gross value Wt change, lb Effect of feed withdrawal on live weight reduc)on and yield Weight change from 4 h prior to market -.0 Linear P < Percentage Yield Quadra)c P < Effect of feed withdrawal on carcass weight and feed savings Carcass wt, lb Carcass weight (based on 20 lb live wt Feed saved, lb/pig Feed savings.7 Quadra)c P < Frobose et al., 20 Frobose et al., 20 1

2 Effect of feed withdrawal on carcass contamina)on 6 Feed withdrawal over )me 7 % prevalence/pen 2% 20% 1% % % Leaking ingesta Linear P <.001.3% 4.34% 3.17% 1.60% 3 x 3 factorial 0, 12, or 24 hours withdrawal 1, 2, or 3 marke)ng events 0% Frobose et al., 20 Influence of feed withdrawal on weight of the gastrointes)nal tract Influence of feed withdrawal and number of )mes withdrawn on carcass weight Gastrointes-nal tract, lb Influence of feed withdrawal and number of )mes withdrawn on percentage of pigs with severe ulcers Influence of feed withdrawal and number of )mes withdrawn on economic return 11 Return compared to no withdrawal, $/pig $2 $0 - $2 - $4 - $6 - $ $0. $0.1 - $0.6 - $3. - $.1 - $ Number of -mes feed withdrawn 2

3 Feed withdrawal Closeout pigs Shut down feeders 1 h before pigs will be processed Prior to closeout Only withdraw feed when pigs being marketed can be removed from pens and remaining pigs can keep receiving feed Ex. Sort scales, large pen barns 12 Feeding of high diets before market Feeding diets containing reduce feed cost in many situa)ons, but also reduce carcass yield.4.0. SEM = 0.0 Quad P < 0.01 Linear, P < % % 20%, % Whitney et al., Effect of (0, 1, ) and Midds (0,., 1%) on pig performance (0 to 2 lb) 14 Effect of (0, 1, ) and Midds (0,., 1%) on pig performance (0 to 2 lb) 1 Carcass weight/farm weight..2. Inter P = 0.0 Midds P<0.37 P=0.17 SEM Dura)on P=.002 Level P= SEM NDF, % Midds, % , % d 0 to 43: Low d 43 to 67: Low Low Med d 67 to 0: Low Low Med Low Med Asmus et al., 2011 Asmus et al., 2011 Effect of (0, 1, ) and Midds (0,., 1%) on pig performance (0 to 2 lb) 16 Effect of level and fat addi)on during withdrawal on pig performance (0 to 2 lb) 17 Full large intes-ne, lb 7 6 Dura)on P<0.01 Level P< 0.0 SEM Fat x P=0.23 Level P< Fat P=0.0 SEM d 0 to 43: Low d 43 to 67: Low Low Med d 67 to 0: Low Low Med Low Med Asmus et al., 2011 d 0 to : Low d to 2: Low Low Med Low Med Fat, %: % 3% 3% Fiber = (0, 1, ) and Midds (0,., 1%) Asmus et al.,

4 Effect of level and fat addi)on during withdrawal on pig performance (0 to 2 lb) Full large intes-ne, lb Fat x P=0.0 Level P<0.01 Fat P=0.1 SEM d 0 to : Low d to 2: Low Low Med Low Med Fat, %: % 3% 3% Fiber = (0, 1, ) and Midds (0,., 1%) Asmus et al., Carcass weight, lb Effect of level and Paylean on finishing pig performance (d ) Paylean P < Withdrawal P = 0.01 Corn- soy vs P < SEM = Control Paylean d 0 to 4: Corn- soy d 4 to : Corn- soy Corn- soy Graham et al., Full large intes)ne, lb Effect of level and Paylean on full large intes)ne weight (d ) Paylean P < 0. Withdrawal P = Corn- soy vs P < SEM = Control Paylean IV, g/0g Effect of level and Paylean on finishing pig performance (d ) Control Paylean Paylean P = 0. Withdrawal P < 0.01 Corn- soy vs P < 0.01 SEM = d 0 to 4: Corn- soy d 4 to : Corn- soy Corn- soy 60 d 0 to 4: Corn- soy d 4 to : Corn- soy Corn- soy Graham et al., 2012 Graham et al., 2012 Effect of level and diet form on finishing pig performance (d 1; BW 27 lb) Interac)on P = 0. Pellet P = 0.2 Diet P = SEM = Meal.1 Pellet.4 d 0 to 64: Corn- soy d 64 to 1: Corn- soy Corn- soy 22 Effect of removal on performance of barrows and IC pigs (d 12) 0 7 Interac)on P = 0.41 Gender P < Diet P = SEM = Barrow..0 d 0 to : Corn- soy d to 12: Corn- soy Corn- soy IC 23 Nemechek et al., 2012 Asmus et al.,

5 Carcass weight, lb Effect of () and Midds (1%) at Exp Corn- soy vs high, P = 0.11 No withdraw effects, P > 0.2 SEM Corn- Soy 20 d 1 d d d Days fed corn- soy from high prior to marke)ng 24 Effect of () and Midds (1%) at Exp. 1 Value, $ Feed, $ Income over feed, $/pig $26. $2.7 $27.1 $27. $26.4 $26.33 Corn- Soy 20 d 1 d d d Days fed corn- soy from high prior to marke)ng 2 Carcass weight, lb Effect of () and Midds (1%) at Exp SEM 2.0 Corn- soy vs high, P < 0.01 Withdrawal, linear P < 0.0; quad P = Effect of () and Midds (1%) at Exp. 2 Farm yield, %...62 Corn- soy vs high, P = 0.1 No withdraw effects, P > 0.27 SEM Corn- Soy 24 d 1 d 14 d d Days fed corn- soy from high prior to marke)ng Corn- Soy 24 d 1 d 14 d d Days fed corn- soy from high prior to marke)ng Effect of () and Midds (1%) at Exp. 2 (at )me of study) Value, $ Feed, $ Income over feed, $/pig $26.01 $26.63 $2.6 $2.04 $27. $26.61 Corn- Soy 24 d 1 d 14 d d Days fed corn- soy from high prior to marke)ng 2 Effect of () and Midds (1%) at Exp. 2 (June 20, 2013 prices) Value, $ Feed, $ Income over feed, $/pig $.33 $.27 $60. $.0 $.2 $7. Corn- Soy 24 d 1 d 14 d d Days fed corn- soy from high prior to marke)ng 2

6 30 Removing pigs from high fiber diets Reduc)on in yield Short term = < days Ex. high oil Removing pigs from high fiber diets 31 Not the same as removal from diets with high levels of unsaturated fat! Yield Fat quality Reduc)on in carcass weight due to lower ADG? Carcass weight appears to increase linearly to 1 to 20 d of withdrawal. Ex. Low oil or wheat midds Shorter withdrawal Longer withdrawal Thank You! 6