The effects of medium-oil dried distillers grains with solubles on growth performance and carcass traits in finishing pigs

An experiment was conducted to determine the effects of increasing medium-oil dried distillers grains with solubles (DDGS; 7.4% fat, 28.1% CP, 10.8% ADF, and 25.6% NDF) on growth performance and carcass traits in finishing pigs. A total of 288 pigs (PIC 327 × 1050; initially 151.8 lb) were allotted to 1 of 4 dietary treatments. Treatments consisted of a corn-soybean meal control diet or the control diet with 15, 30, or 45% medium-oil DDGS, with 8 pigs per pen and 8 replications per treatment. Increasing medium-oil DDGS decreased (linear, P < 0.01) ADG and worsened (linear, P < 0.02) F/G. In addition, final BW, HCW, carcass yield, and loin-eye depth decreased (linear, P < 0.03), and jowl iodine value (IV) increased (linear, P < 0.001) with increasing medium-oil DDGS. When pigs are fed traditional DDGS containing >10.5% fat, each 10% DDGS added to the diet increases jowl IV approximately 2 mg/g; however, feeding increasing medium-oil DDGS increased jowl IV only about 1.4 units per each 10% DDGS. In conclusion, swine producers must be aware of the negative ramifications on growth performance of using medium-oil DDGS in swine diets

Effects of added Zn in diets with Ractopamine HCl on growth performance and carcass quality of finishing pigs in a commercial environment

The experiment was conducted in a commercial facility to determine the effects of added Zn on the performance of finishing pigs fed Ractopamine HCl (RAC; Paylean®; Elanco Animal Health, Greenfield, IN). Pigs were randomly assigned to pens based on gender (14 barrow pens, 11 gilt pens, and 23 mixed-gender pens), with 25 to 28 pigs per pen. Previously, pens of pigs were assigned to treatments containing 0, 7.5, or 15% bakery by-product in a completely randomized design while balancing for initial BW and gender. On d 75, treatments were implemented to determine the effects of adding 50 ppm Zn from ZnO on finishing pig performance. A total of 1,234 pigs (PIC 337 × 1050; average BW 224.6 lb) were used in a 28-d study. Pens of pigs were randomly assigned to diets with and without 50 ppm added Zn from zinc oxide (ZnO) and balanced by BW, bakery by-product, and gender. All diets contained 5 ppm RAC and 83 ppm Zn from ZnO provided by the trace mineral premix. There were 24 pens per treatment. Overall (d 75 to 102), no differences (P > 0.22) in growth performance or carcass characteristics were observed when pigs were fed diets with 50 ppm added Zn compared with the RAC control. For pigs subsampled on d 84, pigs fed diets with 50 ppm added Zn had decreased (P < 0.05) edge belly thickness compared with pigs fed the control. For pigs subsampled on d 102, pigs fed diets with 50 ppm added Zn had decreased (P < 0.02) backfat thickness, belly weight, and edge belly thickness; a tendency for decreased (P < 0.07) middle belly thickness; and increased (P < 0.01) percentage lean compared with pigs fed the RAC control. In contrast with our previous research, these data indicate that adding 50 ppm Zn from ZnO to finishing pig diets containing RAC did not improve overall performance. Consistent with the earlier research, income over feed cost (IOFC) was numerically increased with the addition of Zn

The interactive effects of high-fiber diets and Ractopamine HCl on finishing pig growth performance, carcass characteristics, carcass fat quality, and intestinal weights

In previous research, feeding pigs high amounts of dried distillers grains with solubles (DDGS) and wheat middlings (midds) has been shown to reduce carcass yield and negatively affect iodine value (IV). The influence of Ractopamine HCl (RAC; Paylean, Elanco Animal Health, Greenfield, IN) on this response is not known; therefore, a total of 575 finishing pigs (PIC 327 × 1050, initially 123 lb) were used in two consecutive 73-d trials to determine the effects of DDGS and midds (high fiber) withdrawal 24 d before harvest in diets with or without RAC on finishing pig growth performance, carcass characteristics, and fat quality. From d 0 to 49, pigs were allotted to 1 of 2 dietary treatments in a completely randomized design based on initial pen weight. The dietary treatments included a corn-soybean meal–based control diet or diets with 30% DDGS and 19% wheat midds. Twelve pens of pigs were fed the corn-soybean meal control diet, and 24 pens were fed the high-fiber diet. During this 49 d period, pigs fed the corn-soybean meal diets had improved (P < 0.0001) ADG and F/G compared with those fed the high-fiber diets. On d 49, pens of pigs were re-allotted to 1 of 6 dietary treatments; pigs remained on the corn-soybean meal diets, switched from the high-fiber diet to corn-soybean meal (withdrawal diet), or were maintained on the high-fiber diet. These 3 regimens were fed with or without 9 g/ton RAC

Porcine reproductive and respiratory syndrome: characteristic features of the infected fetus

Pregnant gilts were infected at 90 days of gestation with porcine reproductive and respiratory virus (PRRSV) isolate SD-23983. Fetuses recovered between 109 and 112 days of gestation were analyzed for the presence of PRRSV. The results showed that not all fetuses were infected, and that infected fetuses tended to be clustered within the uterine horns, suggesting that virus is spread from fetus to fetus. Even though affected litters exhibited different degrees of gross pathology, the presence of an anatomical abnormality was not an identifier of an infected fetus. Analysis of virus replication in individual tissues identified the thymus as the principal site of PRRSV replication. The results show that PRRSV infection in the developing fetus follows a unique course and that PRRSVinduced alterations may be the result of the effect of PRRSV on maternal tissues. These factors need to be taken into consideration when diagnosing PRRSV infection as the cause for aborted and stillborn fetuses.; Swine Day, 2005, Kansas State University, Manhattan, KS, 200

Foreword and Supplemental Information, Swine Day

It is with great pleasure that we present the 2016 Swine Industry Day Report of Progress. This report contains updates and summaries of applied and basic research conducted at Kansas State University during the past year. We hope that the information will be of benefit as we attempt to meet the needs of the Kansas swine industry

Effect of Soy Protein Sources on Nursery Pig Performance

A total of 480 nursery pigs (PIC C-29 × 359, initially 12.9 lb) were used in a 38-d growth trial to determine the effects of soy protein sources on pig performance. There were 10 pigs per pen and 8 replications per treatment. The 6 dietary treatments were a negative control, corn-soybean meal-based diet (30.1% soybean meal), and diets containing five different specialty protein sources including: Nutrivance, HP 300, soy protein concentrate (SPC), or NF8 or fish meal replacing 10% of the soybean meal in the negative control diet. Experimental diets were fed in two phases (5 lb per pig on d 0 to approximately d 14 and d 14 to 24) with a common diet fed from d 24 to 38. Diets contained 25 and 10% dried whey in phases 1 and 2, respectively. From d 0 to 14, pigs fed diets containing Nutrivance or NF8 had greater (P \u3c 0.05) ADG than pigs fed the negative control, high SBM diet. Also, pigs fed the NF8 diet had greater (P \u3c 0.05) ADG than pigs fed diets containing SPC or fish meal. The growth response was a result of greater (P \u3c 0.05) ADFI for pigs fed the Nutrivance diet and improved (P \u3c 0.05) feed efficiency for the NF8 diet. From d 14 to 24, pigs fed the diets containing fish meal or HP 300 had greater (P \u3c 0.05) ADG than pigs fed NF8, with pigs fed NF8 having poorer (P \u3c 0.05) F/G compared with pigs fed all other treatments. From d 0 to 24, pigs fed the diet containing HP 300 had greater (P \u3c 0.05) ADG than pigs fed the negative control, high SBM diet, with other treatments being intermediate. Pigs fed the diet containing HP 300 had improved (P \u3c 0.05) F/G compared with pigs fed all other protein sources except fish meal. Pigs fed the fish meal diet also had improved (P \u3c 0.05) F/G compared with pigs fed the diet containing NF8. The improvement in performance from d 0 to 14 for pigs fed the diet containing Nutrivance resulted in a 0.5 lb heavier (P \u3c 0.05) pig on d 14 as compared to the negative control diet. The 0.5 lb advantage in BW over the negative control was maintained to the end of the trial (d 38) and was similar to the final BW of pigs fed the HP 300 diet; however, the weight advantage was no longer statistically significant

Swine Day 2015 Supplements

It is with great pleasure that we present the 2015 Swine Industry Day Report of Progress. This report contains updates and summaries of applied and basic research conducted at Kansas State University during the past year. We hope that the information will be of benefit as we attempt to meet the needs of the Kansas swine industry

Swine Day 2016 Full Report

It is with great pleasure that we present the 2016 Swine Industry Day Report of Progress. This report contains updates and summaries of applied and basic research conducted at Kansas State University during the past year. We hope that the information will be of benefit as we attempt to meet the needs of the Kansas swine industry

Effects of a seaweed extract on weanling pig growth performance and immune function during an acute enteric disease challenge

A total of 95 pigs (initially 15 lb and 17 d of age) was used in a 28 d growth trial to determine the effects of Ascophyllum nodosum seaweed extract (ANOD) on weanling pig growth performance and immune function in response to enteric disease challenge with Salmonella typhimurium (ST). Experimental treatments were arranged in a 2 x 4 factorial with main effects of disease challenge (control vs. ST challenge) and dietary addition of ANOD (0, 0.5, 1.0, and 2.0% of diet). Results suggest little beneficial effect of dietary ANOD on growth performance or immune response in the presence or absence of ST challenge

Effects of a Gluco-oligosaccharide on Growth Performance of Nursery Pigs

A total of 3,456 nursery pigs (PIC L337 × 1050, initially 12.4 lb BW) were housed in 3 commercial research rooms and used in a 42-d growth study to determine the effects of gluco-oligosaccharide (Midori USA, Inc., Cambridge, MA) on growth performance. In each room, pens of pigs (27 pigs/pen) were blocked (6, 5, and 5 blocks in rooms 1, 2, and 3, respectively) by initial pen BW. Within blocks, pens were allotted randomly to 1 of 8 dietary treatments in a 2-phase feeding program (d 0 to 14 and d 14 to 42). Dietary treatments were arranged in a 2 × 3 factorial, with or without antibiotic (0 or 55 ppm, Carbadox, Phibro Pro, Teaneck, NJ) and 4 concentrations of gluco-oligosaccharide (0, 200, 400, and 600 ppm). Gluco-oligosaccharide product used in rooms 1 and 2 originated from a different batch than that used in room 3. For the overall feeding period, no room × antibiotic × gluco-oligosaccharide or antibiotic × glucooligosaccharide interactions were observed for any growth responses, but tendencies were found (P \u3c 0.10) for room × gluco-oligosaccharide interaction for final BW and ADG. In rooms 1 and 2, antibiotic treatment increased ADG and ADFI in all feeding periods and improved F/G from d 14 to 28 and d 28 to 42. Increasing gluco-oligosaccharide improved (linear, P \u3c 0.05) ADG and F/G from d 0 to 14. It also increased (P = 0.047) ADG and tended (P = 0.087) to increase ADFI from d 14 to 28, but did not alter the growth responses from d 28 to 42. For the overall period (d 0 to 42), adding an antibiotic to the diet increased (P \u3c 0.01) ADG and ADFI, but did not affect F/G. Increasing gluco-oligosaccharide improved (linear, P \u3c 0.01) ADG and F/G and tended (P = 0.063) to linearly increase ADFI. In room 3, a much smaller response was observed for antibiotic inclusion with only improved (P = 0.005) F/G from d 14 to 28 and increased (P \u3c 0.05) ADG and ADFI from d 28 to 42. Pigs fed increasing glucooligosaccharide tended (linear, P \u3c 0.10) to have reduced ADG and ADFI; however, the overall growth performance was not affected by antibiotic or gluco-oligosaccharide treatments. In conclusion, feeding gluco-oligosaccharide may improve growth performance in nursery pigs, and this effect appears to be independent of the use of antibiotic and more prominent during the early nursery phase. However, due to some room × gluco-oligosaccharide interactions, further research is required to confirm the consistency of the responses to the gluco-oligosaccharide used in this study