Overview Part 2. Use of New Generation Corn DDGS in Feeds for Swine, Poultry, and Aquaculture. Why is there so much interest in feeding DDGS to swine?
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1 Overview Part 2 Use of New Generation Corn DDGS in Feeds for Swine, Poultry, and Aquaculture Dr. Jerry Shurson Professor Dept. of Animal Science University of Minnesota Recommended maximum inclusion rates of new generation DDGS in swine diets Nursery feeding trial results Highlights of grow-finish feeding trial Highlights of gestation-lactation feeding trial Effects of DDGS and phytase on reducing dietary inorganic P supplementation and manure P levels Effects of feeding diets containing DDGS on manure gas and odor emissions U of M DDGS web site New corn distiller s feed ingredients Why is there so much interest in feeding DDGS to swine? New Generation DDGS is high in digestible nutrients Economical partial replacement for: corn soybean meal dicalcium phosphate Increasing production and supply Unique properties reduce P excretion in manure increase litter size weaned/sow gut health benefits? Maximum Inclusion Rates of New Generation DDGS in Swine Diets (Based Upon University of Minnesota Performance Trials) Nursery pigs (> 7 kg) Up to 25 % Grow-finish pigs Up to 2% (higher levels may reduce pork fat quality) Gestating sows Up to 5% Lactating sows Up to 2% Assumptions: no mycotoxins formulate on a digestible amino acid and available phosphorus basis Feeding New Generation DDGS to Weaned Pigs Materials and Methods Nursery Experiments Experiment 1 Pigs weaned at 19. ±.3 d of age Weighed 7.1 ±.7 kg Pigs weaned at 16.9 ±.4 d of age Weighed 5.26 ±.7 kg Pigs were fed a commercial pelleted diet (d to 3 postweaning) II (d 4-17) and III (d 18 35) diets were formulated on a digestible amino acid basis. Diets contained, 5, 1, 15, 2, or 2
2 Effect of DDGS Level on Growth Rate (Experiment 1) Effect of DDGS Level on ADFI (Experiment 1) ADG (g/d) SE = 33.8 SE = 42.1 a b Means not sharing a common superscript letter are significantly different (P <.5) % DDGS 1% DDGS 2% DDGS 2 (P <.1) ADFI (g/d) SE = 46.9 SE = 82.6 % DDGS 1% DDGS 2% DDGS 2 (P <.1) Effect of DDGS Level on Gain/Feed (Experiment 1) Effect of DDGS Level on Growth Rate () G/F SE =.11 SE =.6 % DDGS 1% DDGS 2% DDGS 2 ADG (g/d) SE = 55.1 Linear effect of diet (P =.9) SE = 51.1 % DDGS 1% DDGS 2% DDGS 2 (P <.1) Effect of DDGS Level on Feed Intake () Effect of DDGS Level on Gain/Feed () ADFI (g/d) Linear effect of diet (P =.5) SE = 41.6 b a a SE = 6.9 b b a b % DDGS 1% DDGS 2% DDGS 2 (P <.1) x Diet (P =.2) G/F SE =.13 SE =.3 % DDGS 1% DDGS 2% DDGS 2 (P =.6) Means not sharing a common superscript letter are significantly different (P <.5)
3 Effect of DDGS Level on Final BW () Feeding New Generation DDGS to Grow-Finish Pigs Body weight, kg SE = 1.3 Dietary treatment % DDGS 1% DDGS 2% DDGS 2 Materials and Methods 24 crossbred pigs (approx kg BW) Grow-finish facilities at WCROC Morris, MN Blocked by weight, gender and litter Blocks randomly assigned to 1 of 4 diet sequences 5-phase feeding program, 1, 2, or 3% DDGS diets formulated on total lysine basis 24 pens, 1 pigs/pen, 6 replications/trt Fat Quality Characteristics of Market Pigs Fed Corn-Soy Diets Containing to 3% DDGS Belly thickness, cm Belly firmness score, degrees Adjusted belly firmness score, degrees Iodine number % 3.15 a 27.3 a 25.9 a 66.8 a 1% b 2% c 3% 2.71 b 21.3 b 22.4 b 72. c Means within a row lacking common superscripts differ (P <.5). Feeding New Generation DDGS to Sows Effect of Feeding a Diet on Sow Weight Gain During Gestation (Reproductive Cycle 1) Weight gain (kg) (P >.22) MSE Control DDGS Dietary treatment
4 Effect of Feeding or Gestation Diets and or 2% DDGS Lactation Diets on Pigs Weaned/Litter Effect of Dietary Treatment Combination on Sow Lactation ADFI Number of Pigs Control/Control a x a y a y a y Control/DDGS DDGS/Control DDGS/DDGS Cycle 1 Cycle 2 Feed Intake, kg/day Control/Control a xy b x a y a xy Control/DDGS DDGS/Control Dietary Treatment DDGS/DDGS Cycle 1 Cycle 2 Dietary treatment,x,y Different superscripts indicate significant difference (P <.1).,x,y Different superscripts indicate significant difference (P <.1). Does Feeding DDGS Improve Gut Health? What is Ileitis? Porcine Proliferative Enteropathy Caused by Lawsonia intracellularis Present in 96% of U.S. swine herds (Bane et al., 1997) 28% of pigs affected (NAHMS, 2) Can be shed in infected pigs for up to 1 weeks Animals are infected by oral contact with feces from animals shedding the bacteria 7-1 days after infection: Lesions of the intestinal wall begin to form Lesions maximized around 21 days post-infection Clinical Forms of Ileitis Porcine Intestinal Adenomatosis (PIA) Chronic form Seen in growing pigs (6-2 weeks of age) Decreased feed intake, lethargic Porcine Hemorrhagic Enteropathy (PHE) Acute form, affects heavier pigs Greatest frequency appears to be from kg pigs Massive intestinal hemorrhaging, bloody diarrhea, increase in mortality
5 Healthy Ileitis Effect of Dietary Treatment on Lesion Length (21 d Post-Challenge) Lesion length, cm SE = D1 (P =.2) D1 (P =.2) Jejunum* Ileum* Cecum Colon* Section of gastro-intestinal tract D1 +AR D1+AR * Effect of disease challenge (P <.1). Effect of Dietary Treatment on Lesion Severity (21 d Post-Challenge) Effect of Dietary Treatment on Lesion Prevalence (21 d Post-Challenge) Lesion score (-4) SE = D1 (P =.2) AR (P =.3) D1 (P =.1) D1 (P =.9) D1 +AR D1+AR % of pigs SE = D1 (P =.2) AR (P =.4) D1 (P =.3) D1 +AR D1+AR. Jejunum* Ileum* Cecum Colon* Jejunum* Ileum* Cecum Colon* Section of gastro-intestinal tract Section of gastro-intestinal tract * Effect of disease challenge (P <.1). * Effect of disease challenge (P <.1). Effect of Dietary Treatment on Fecal Shedding (R Analysis) Effect of Treatment on L. intracellularis Infection (IHC Analysis) % of pigs SE = D1xAR (P =.2) D1 +AR D1+AR IHC Score (-4) SE =.12 IHC Score* D1 (P =.5) AR (P =.1) % of pigs positive IHC Prevalence* SE = 2.8 D1 +AR D1+AR.5 2 d d 14* d 21*. * Effect of disease challenge (P <.1). * Effect of disease challenge (P <.1).
6 Summary of Results, Inoculation level was close to goal DDGS inclusion (1%) or antimicrobial regimen had a positive effect on the pig s ability to resist an ileitis challenge No beneficial additive effects of combining DDGS and BMD /Aureomycin regimen DDGS and Phytase are a Key Part of Manure Phosphorus Management Adding 2% DDGS to a corn-soy diet and formulating on an available P basis can reduce manure P by > 12% Adding phytase to a corn-soy diet increases P bioavailability from 15% to > 45% Lowering dietary P, adding 2% DDGS & phytase can reduce manure P excretion by 4 to 5% Diet Composition When 18.8% DDGS and Phytase are Added to the Diet U of M DDGS Web Site Ingredient Corn, kg Soybean meal 44%, kg DDGS, kg Dicalcium phosphate, kg Limestone, kg Salt, kg L-lysine HCl, kg VTM premix, kg Phytase, 5 FTU/kg TOTAL, kg Corn-SBM- kg Lysine % DDGS + Phytase We have developed a DDGS web site featuring: * research summaries - swine, poultry, dairy, & beef - DDGS quality * presentations given * links to other DDGS related web sites * international audiences
7 Research on the Use of Spray Dried Distiller s Solubles Fractions in Baby Pig Feeds Yeast Cream Condensed Distiller s Solubles Residual Solubles Materials and Methods Utilized 56 pigs weaned at 18 days of age 1 pigs per pen 8 replications/treatment 7 dietary treatments Spray Dried Distiller s Solubles () Spray Dried Yeast Cream () Spray Dried Residual Solubles () One pig from each pen (total of 56 pigs) was slaughtered at day 1 to determine effects of diet on intestinal morphology Materials and Methods Materials and Methods 7 dietary treatments fed from day to 1 post-weaning = negative control = spray dried distiller s solubles 15% of the diet 7.5% of the diet replaced animal fat 15% of the diet 5 g/ton 6% of the diet All experimental diets contained: Corn (13 to 36%) Soybean meal 46% 7.5% in and diets 22.5% in all other diets Lactose (2%) Oat groats (12.5%) Fish meal (11%) Minerals and vitamins to meet or exceed requirements = spray dried porcine plasma + carbadox 6% + 5 g/ton
8 Materials and Methods All experimental diets contained: 344 Kcal/kg ME 6.2 to 7.48% crude fat 1.6% lysine.91% methionine + cystine 1.3% threonine.29% tryptophan.87% calcium.8% phosphorus Common phase 2 (days 1 to 21) and phase 3 (days 21 to 42) diets were fed for the remainder of the 6 week-trial Average Daily Gain a a a a a ab b 1 Overall = negative control = spray dried distiller s solubles a, b = Least squares means with different superscripts are different (P <.5) = spray dried porcine plasma + carbadox Average Daily Feed Intake Gain:Feed Overall = negative control = spray dried distiller s solubles = spray dried porcine plasma + carbadox Overall = negative control = spray dried distiller s solubles = spray dried porcine plasma + carbadox Villi Height and Crypt Depth in the Upper 25% of the Small Intestine a a a b a ab b Villi Height, um Crypt Depth, um = negative control = spray dried distiller s solubles a, b = Least squares means with different superscripts are different (P <.5) = spray dried porcine plasma + carbadox Villi Height:Crypt Depth Ratio in the Upper 25% of the Small Intestine a a ab b a ab b Height:Depth Ratio = negative control = spray dried distiller s solubles a, b = Least squares means with different superscripts are different (P <.5) = spray dried porcine plasma + carbadox
9 Villi Measurements from the Upper 25% of the Small Intestine from a Pig Fed the Residual Solubles Diet (1X) Villi Measurements from the Upper 25% of the Small Intestine from a Pig Fed the Carbadox Diet (1X)
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