scholarly journals PSVI-14 Interactive effects of Cordyceps mushroom powder and carbadox on nursery pig performance

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 207-208
Author(s):  
Jacob A Richert ◽  
Jorge Y P Palencia ◽  
Clayton S Chastain ◽  
Morgan T Thayer ◽  
Brian T Richert ◽  
...  
Keyword(s):  
Positive Control ◽  
Interactive Effects ◽  
Experimental Unit ◽  
Nursery Pigs ◽  
Feeding Program ◽  
Nursery Pig ◽  
Copper Zinc ◽  
Pig Performance ◽  
Dietary Treatments ◽  
Growth Trial

Abstract The objective was to evaluate the independent and additive effects of Cordyceps mushroom powder and carbadox to pharmacological copper+zinc in nursery pig diets. Two hundred-ten crossbred weanling pigs [(Duroc × (York × Landrace)] avg. 19 d of age and 5.8 kg were used in a 33 day growth trial. Pigs were alloted by weight, sex, ancestry, and assigned to body weight (BW) blocks. Within BW blocks, sex ratios were constant in each pen. Pen was the experimental unit and growth performance was analyzed using BW, ADG, ADFI, and G:F. There were 7 pigs/pen and 6 pens/treatment. Treatments were: 1) a negative diet (NC); 2) positive control (PC; Carbadox, 55 ppm); 3) NC+300 ppm Cordyceps mushroom powder (NC+MP); 4) PC +300 ppm mushroom(PC+MP); 5) supplemental copper sulfate (125 ppm) and zinc oxide (3000 ppm d 0-7, 2000 ppm d 7-35), CuZn. Dietary treatments were fed in a four-phase feeding program (d0-7, d7-14, d14-21, and d21-33). There were no interactions between MP and Carbadox at any time point (P > 0.10). Pigs fed the PC, PC+MP and CuZn treatment had increased BW (P < 0.05), ADG (P < 0.05), ADFI (P < 0.10) and G:F (P < 0.05) over the NC at the end of phases 1, 2, and 3, with no main effect of MP treatment. During Phase 4, pigs fed MP, PC, and CuZn diets all had increased ADG (P < 0.05; 431, 477, 455, 505, 486 g/d, diet 1-5, respectively) and ADFI (P < 0.05) over the NC fed pigs. Overall, d0-33, PC diets and CuZn supplemented pigs had increased ADG (P < 0.05) and ADFI (P < 0.05), with pigs fed MP tending to have increased ADFI (P < 0.08) over NC fed pigs. Feeding nursery pigs pharmacological levels of Cu+Zn and carbadox have economical value to increase nursery pig performance with MP may increase pig ADFI and final BW through potentially complimentary modes of action.

scholarly journals 80 Determining the effects of tryptophan biomass on growth performance of 11 to 23 kg nursery pigs

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 43-43
Author(s):  
Madison R Wensley ◽  
Jason C Woodworth ◽  
Joel M DeRouchey ◽  
Steve S Dritz ◽  
Mike D Tokach ◽  
...  
Keyword(s):  
Block Design ◽  
Positive Control ◽  
Negative Control ◽  
Experimental Unit ◽  
Growth Data ◽  
Nursery Pigs ◽  
Nursery Pig ◽  
Pig Performance ◽  
Dietary Treatments ◽  
Growth Trial

Abstract A total of 320 barrows (DNA 200×400, initially 11.3 ± 0.65 kg BW) were used in a 21-d growth trial evaluating the effects of feeding Trp biomass (CJ America-Bio, Downers Grove, IL) as a source of Trp on nursery pig performance. Pigs were weaned at approximately 21 d of age, placed in pens based on initial BW, and fed a common diet. On d 21 after weaning, pigs were weighed and pens were allotted to 1 of 4 dietary treatments with 5 pigs/pen and 16 replicates/treatment. Dietary treatments included a negative control (16% SID Trp:Lys), positive control (21% SID Trp:Lys from crystalline L-Trp), or diets containing Trp biomass to provide 21 or 23.5% SID Trp:Lys (included at 0.104 or 0.156% of the diet, respectively). Diets were corn-soybean meal based and contained 1.25% SID Lys with other AA set to meet or exceed NRC (2012) requirement estimates. The Trp biomass contained 69% Trp. Growth data were analyzed as a randomized complete block design using PROC GLIMMIX of SAS with pen as the experimental unit. Overall (d 0 to 21) pigs fed 21% Trp from L-Trp or Trp biomass had increased (P < 0.05) ADG compared to the control, with pigs fed the 23.5% SID Trp biomass intermediate. Pigs fed the 21% Trp from Trp biomass had improved (P < 0.05) G:F compared to the control with others intermediate. In conclusion, Trp biomass is a viable alternative to crystalline Trp, but further evaluation at higher inclusion levels is needed.

scholarly journals 176 Evaluation of a novel threonine source for nursery pig diets

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 85-86
Author(s):  
Dalton Humphrey ◽  
Spenser Becker ◽  
Jason Lee ◽  
Keith Haydon ◽  
Laura L Greiner
Keyword(s):  
Growth Performance ◽  
Positive Control ◽  
Negative Control ◽  
Experimental Unit ◽  
Nursery Pigs ◽  
Nursery Pig ◽  
Weaning Pigs ◽  
Dietary Treatments ◽  
Similar Growth ◽  
Source Test

Abstract Four hundred and eighty (PIC 337 X 1050, PIC Genus, Hendersonville, TN) pigs were used to evaluate a novel threonine source (ThrPro, CJ America-Bio, Fort Dodge, IA) for nursery pigs from approximately 7 kg to 20 kg. At weaning, pigs were sorted by gender and fed a common diet for one week. Upon completion of the first week, pigs were sorted into randomized complete blocks, equalized by weight, within 16 replications. Pigs were allocated to one of three dietary treatments: positive control (POS)-SID LYS:THR 0.60, negative control (NEG)-SID LYS:THR ≤0.46 and alternative threonine source (TEST)-SID LYS:THR 0.60. All other nutrients met or exceeded the NRC (2012) recommendations. Growth and intake data were analyzed using PROC MIXED procedure in SAS. The experimental unit was the pen. During the first 14 days, pigs fed TEST had similar ADG (0.417 vs. 0.414 kg/d, P=0.81) and G:F (0.977 vs. 1.030, P=0.18) compared to POS, and increased ADG (0.417 vs. 0.387 kg/d, P=0.01) and G:F (0.977 vs. 0.898, P=0.05) compared to NEG. Over days 14-28, pigs fed TEST had similar ADG (0.523 vs. 0.532 kg/d, P=0.49) and G:F (0.712 vs. 0.707, P=0.71) compared to POS, and increased ADG (0.523 vs. 0.479 kg/d, P=0.002) and G:F (0.712 vs. 0.627, P&lt; 0.0001) compared to NEG. Overall (d 0 to 28), pigs fed TEST had similar ADG (0.466 vs. 0.474 kg/d, P=0.48) and G:F (0.808 vs. 0.816, P=0.55) compared to POS, and increased ADG (0.466 vs. 0.433 kg/d, P=0.002) and G:F (0.808 vs. 0.725, P&lt; 0.0001) compared to NEG. ADFI was not significantly different across treatments for the entirety of the study. In conclusion, the replacement of L-threonine with a novel threonine source resulted in similar growth performance in nursery pigs from approximately 7 kg to 20 kg.

scholarly journals PSV-4 Direct-fed microbial program improved survivability of nursery pigs in commercial production

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 156-156
Author(s):  
Victor G Perez ◽  
Terry Parrott ◽  
Janet C Remus ◽  
Michael Perry
Keyword(s):  
Drinking Water ◽  
Antibiotic Therapy ◽  
Phase 1 ◽  
Nursery Pigs ◽  
Pig Production ◽  
Severe Diarrhea ◽  
Feeding Program ◽  
Nursery Pig ◽  
Pig Performance ◽  
Parametric Survival

Abstract A total of 2,304 newly weaned pigs (5.8±0.06 Kg BW, ~21-day old, DNA Genetics) were used in a RCBD to evaluate the effect of a direct-fed microbial (DFM) program on pig performance and survivability, under commercial pig production. Pigs were housed in 2 barns (blocking factor) with 36 pens each (32 pigs/pen, mixed-sex), and pens randomized to treatments: Control or DFM program (36 pens/treatment). The program consisted of a DFM (blend 1) delivered through drinking water (1.32x108 CFU/pig/day) from day 0 to 7, followed by another DFM (blend 2) in feed (1.5x105 CFU/g of feed) from day 7 through 49. Those DFM consisted of spore-forming Bacillus sp. selected to inhibit enterotoxigenic E. coli growth (blend 1) and reduce local inflammation (blend 2). The feeding program included phases 1 and 2 (7 days each) in pellet, and phases 3 (11 days) and 4 (24 days) in meal. Phase 1 feeds included antibiotics Chlortetracycline and Tiamulin; both phase 4 feeds included Carbadox. A severe diarrhea outbreak was observed in week 3; antibiotic therapy (Neomycin, Sulfadiazine or Trimethoprim) throughout drinking water was used in both treatments alike between days 19 and 28. Pig and feed weight were recorded by pen; ADG and ADFI were calculated on pig-days. Pigs removed included mortality and those ill, nonresponsive to antibiotics. Performance data were analyzed by ANOVA, using the GLM procedure. Pigs removed did not follow normal distribution and was analyzed using a parametric survival option with days as time variable (JMP v14.2.0). No differences were detected through day 25. Pigs in DFM consumed less feed (923 vs. 951 g/d; SEM=10.33; P=0.05) and were more efficient (0.61 vs. 0.59 kg/kg; SEM=0.004; P&lt; 0.05) from days 25 to 49. Total pigs removed were reduced (P&lt; 0.05) by 23% in DFM vs. Control (Table 1). In conclusion, the DFM program improved nursery pig survivability and late performance, under commercial pig production that included a diarrhea outbreak and antibiotic therapy.

248 Impact of Adding a Stimbiotic or Sugar Beet Pulp to Nursery Pig Diets on Growth Performance and Individual Injections

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 93-94
Author(s):  
Laura A Merriman ◽  
Pete Wilcock ◽  
Gustavo Cordero ◽  
Ben Haberl
Keyword(s):  
Sugar Beet ◽  
Sugar Beet Pulp ◽  
Contingency Analysis ◽  
Rotavirus A ◽  
Soluble Fibre ◽  
Feeding Program ◽  
Beet Pulp ◽  
Nursery Pig ◽  
Pig Performance ◽  
Dietary Treatments

Abstract Utilizing different dietary fiber sources has been studied in piglets to help mitigate post-weaning diarrhea and improve post-weaning performance. An experiment was conducted to investigate the effect of adding sugar beet pulp or a stimbiotic (Signis; AB Vista) on nursery pig performance. Barrows (n = 216; average initial BW = 5.1kg) were randomly allotted to one of three dietary treatments and fed a 4 phase feeding program; 1) Control (Con), Insoluble/Soluble fibre ratio (I/S), P1; 4.47, P2; 5.84, P3; 5.82, P4; 7.08. 2) High Soluble (HS) with sugar beet pulp added at 5% (P1 and P2) and 2.5% (P3 and P4) giving the following I/S ratio; P1; 2.63, P2; 2.91, P3; 5.02 and P4; 5.42. 3) Control plus stimbiotic added at 100 g/t (SIG). Pen weight and feed disappearance were recorded weekly to calculate ADG, ADFI, and G:F. Fecal score was visually ranked by pen daily from wean to 35 days. Blanket water medications were not provided. Instead, individual pigs that needed treatment were identified and injected with individual antibiotic interventions, and the number of interventions per pig was recorded. Performance data were submitted to ANOVA using JMP with mean separation by Tukey test and a contingency analysis was used to compare antibiotic injections. At day 14, pigs had a Rotavirus A and B challenge. Addition of HS or SIG reduced (P &lt; 0.05) individual antibiotic treatments by 56 and 32% compared to the CON, respectively. No differences were observed in scour scores or overall ADG. Overall intake was greater (P &lt; 0.01) in HS (0.560 kg) than CON (0.491 kg) or SIG (0.492 kg). Pigs fed SIG (0.671) had a better (P = 0.011) G:F over SBP (0.602), with CON (0.649) being intermediate. In conclusion, HS increased intake where stimbiotic improved feed efficiency, and both decreased antibiotic treatments.

scholarly journals 177 Effect of supplementing a fatty acid-based product, Monomix, or pharmacological levels of zinc oxide on growth performance of nursery pigs

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 84-85
Author(s):  
Kelsey L Batson ◽  
Lori Thomas ◽  
Jason C Woodworth ◽  
Mike D Tokach ◽  
Robert D Goodband ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Experimental Unit ◽  
Acid Product ◽  
Nursery Pigs ◽  
Medium Chain ◽  
Randomized Design ◽  
Quality Technology ◽  
Nursery Pig ◽  
Fatty Acid Product ◽  
Pig Performance

Abstract Trials suggest short and medium chain fatty acids can be used as alternatives for ZnO; however, US studies are limited. Therefore, the objective of this study was to evaluate the effects of a short and medium chain fatty acid product (Monomix, Quality Technology International, Inc., Elgin, IL) added alone or in combination with pharmacological levels of ZnO on nursery pig performance. A total of 354 pigs (DNA 200×400, initial BW=5.9 kg) were randomized to pens (5 pigs/pen) and pens were allotted to 1 of 4 treatments with 18 replicates/treatment. Treatments were arranged in a 2×2 factorial with main effects of added ZnO (0 vs. 3,000/2,000/0 ppm of Zn in phases 1, 2, and 3 respectively) and Monomix (0 vs. 0.4% in phases 1, 2, and 3). Treatment diets were formulated in three phases fed from d 0 to 7, 7 to 18, and 18 to 35 post-weaning with all diets containing 110 ppm Zn from the trace mineral premix. Data were analyzed as completely randomized design using the PROC GLIMMIX procedure of SAS with pen as the experimental unit. No ZnO × Monomix interactions (P=0.399) were observed. Feeding Monomix decreased ADFI (P=0.002) and ADG (P=0.012) from d 0 to 7, resulting in decreased d 7 BW (P=0.015) but there was no evidence for other differences. Feeding ZnO from d 0 to 7 and 7 to 18,increased ADG (P&lt; 0.001), ADFI, and BW, and improved G:F. Overall from d 0 to 35, pigs fed diets with added ZnO in phases 1 and 2 had increased (P&lt; 0.05) ADG, ADFI, and d 35 BW, with no evidence for differences in performance in pigs fed diets with Monomix. The addition of Monomix failed to improve pig performance, whereas pharmacological levels of ZnO improved ADG and ADFI.

scholarly journals 245 Evaluation of Cellulose in Diets with and Without Added Zno on Nursery Pig Performance

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 92-93
Author(s):  
Jenna A Chance ◽  
Mike D Tokach ◽  
Hilda I Calderon ◽  
Jason C Woodworth ◽  
Joel M DeRouchey ◽  
...  
Keyword(s):  
Dry Matter ◽  
Phase 1 ◽  
Interactive Effects ◽  
Phase 2 ◽  
Nursery Pig ◽  
Weaning Pig ◽  
Pig Performance ◽  
Two Phases ◽  
Dietary Treatments ◽  
Main Effects

Abstract A total of 1,296 pigs (PIC L337×1050; initially 4.8 kg) were used in a 42-d study to evaluate cellulose in diets with and without pharmacological levels of Zn on nursery pig performance. Our hypothesis was that added fiber (cellulose) may provide more benefit in diets without ZnO. Pens were assigned to 1 of 4 dietary treatments in a RCBD by BW with 27 pigs/pen and 12 pens/treatment. Dietary treatments were arranged in a 2×2 factorial with main effects of cellulose (0 vs 1%; J. Rettenmaier USA, Schoolcraft, MI) and Zn (200 vs. 3,000 mg/kg in phase 1 and 110 vs. 2,000 mg/kg in phase 2). Treatment diets were formulated in two phases fed from d 0 to 7 and 7 to 21 with a common diet fed from d 21 to 42 post-weaning. Pig weights and feed disappearance were collected weekly to determine ADG, ADFI, and G:F. On d 16 or 17, fecal samples were collected from 3 pigs/pen to determine fecal DM, and all pens were visually evaluated for fecal consistency. There were no Zn×cellulose interactions. For the experimental and overall period, pigs fed diets containing added Zn had increased (P &lt; 0.001) ADG, ADFI, G:F and BW while those that were fed cellulose had decreased (P &lt; 0.05) ADG. For fecal dry matter, there was no evidence for difference (P &gt;0.10) between any of the treatments but those fed added ZnO had visually firmer feces as evidenced by lower (P &lt; 0.001) fecal scores. When fed a common diet from d 21 to 42, pigs previously fed added ZnO had increased (P &lt; 0.001) ADG (502 vs. 523 g/d) and ADFI (697 vs. 734 g/d). In conclusion, there were no interactive effects between added cellulose and Zn; however, cellulose reduced ADG while the inclusion of pharmacological levels of Zn improved all growth criteria.

scholarly journals 172 Standardized total tract digestible phosphorus requirement of 11- to 23-kg pigs fed diets containing phytase

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 97-98
Author(s):  
Carine M Vier ◽  
Steve S Dritz ◽  
Mike D Tokach ◽  
Jason C Woodworth ◽  
Robert D Goodband ◽  
...  
Keyword(s):  
Block Design ◽  
Experimental Unit ◽  
Nursery Pigs ◽  
Nonlinear Mixed Models ◽  
Feed Cost ◽  
Randomized Complete Block Design ◽  
Phosphorus Requirement ◽  
Dietary Treatments ◽  
Quadratic Models ◽  
Growth Trial

Abstract The objective of this study was to determine the standardized total tract digestible phosphorus (STTD P) requirement of nursery pigs from 11 to 23 kg fed diets containing 1,000 phytase units (FYT). A total of 2,140 barrows and gilts (PIC 359×Camborough, initial BW 11.1 ± 0.24 kg) were used in a 21-d growth trial with 24 to 27 pigs per pen and 12 pens per treatment in a randomized complete block design. The 7 dietary treatments consisted of 0.30, 0.33, 0.38, 0.43, 0.48, 0.53, and 0.58% STTD P, which represented 90, 100, 115, 130, 145, 160 and 175%, respectively, of the NRC (2012) requirement estimate for STTD P for pigs weighing 11 to 23 kg. All diets contained 1,000 FYT of Ronozyme Hiphos 2500 (DSM Nutritional Products, Inc., Parsippany, NJ) with assumed release values of 0.15% available P and 0.132% STTD P. Treatments were achieved by increasing the amount of calcium carbonate and monocalcium phosphate at the expense of corn, while maintaining a similar 1.17:1 total Ca:total P ratio across treatments. Experimental data were analyzed with pen as the experimental unit, using generalized linear and nonlinear mixed models, which included quadratic polynomial, broken-line linear, and broken-line quadratic models. Increasing STTD P quadratically improved (P < 0.05) ADG and feed efficiency (G:F). Final BW and ADFI increased linearly (P < 0.05) up to the highest STTD P level. Income over feed cost improved quadratically (P < 0.05), with the highest income observed at 0.43% STTD P. The broken-line linear plateau was estimated at 0.40% STTD P for ADG and at 0.37% STTD P for G:F. In conclusion, the estimated STTD P requirement for nursery pigs from 11 to 23 kg fed diets containing 1,000 FYT were greater than NRC (2012) requirement estimates and ranged from 0.37 to 0.43% to optimize performance and economic return.

scholarly journals 117 Determining high-lysine sorghum amino acid digestibility and the effects on nursery pig performance

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 67-67
Author(s):  
Lori L Thomas ◽  
Robert D Goodband ◽  
Charmaine D Espinosa ◽  
Hans H Stein ◽  
Jason C Woodworth ◽  
...  
Keyword(s):  
Amino Acid ◽  
Soybean Meal ◽  
Terminal Ileum ◽  
Experimental Diet ◽  
High Lysine ◽  
Nursery Pig ◽  
Pig Performance ◽  
Dietary Treatments ◽  
Growth Trial

Abstract Two experiments determined the SID of AA in a high-lysine sorghum cultivar, followed by a growth trial to determine its effects on pig performance using increasing feed-grade AA at the expense of soybean meal. In Exp. 1, ten barrows (initially 25.9 kg) were surgically fitted with a T-cannula at the terminal ileum and randomly assigned to 1 of 5 diets in a 5-period, cross-over design. Experimental diets included a corn-based diet, a diet containing high-lysine sorghum, or two diets with either white or red sorghum cultivars. The fifth experimental diet was N-free to determine endogenous AA loss. In corn, SID CP, lysine, methionine, threonine, and valine were greater (P < 0.020) than sorghum-based diets, with no evidence for differences among the sorghum cultivars. In Exp. 2, a total of 293 pigs (initially 9.6 kg) were used. Dietary treatments were randomly assigned 20 d after weaning and consisted of a corn-based diet, a diet based on conventional sorghum, and 4 diets with high-lysine sorghum with 10 replications/treatment. The corn-based, conventional sorghum, and the first high-lysine sorghum (low) diets each contained the same amount of soybean meal with varying amounts of feed-grade AA. The 3 remaining high-lysine sorghum diets included incrementally increasing amounts of feed-grade AA (low-medium, medium-high, and high), replacing soybean meal. Overall, there was no evidence for differences in ADG or ADFI between treatments. However, pigs fed the high-lysine sorghum with the greatest amount of feed-grade AA had decreased G:F (P = 0.045) compared with those fed other experimental diets. In summary, SID AA values for the high-lysine sorghum in this study were not different from sorghum cultivars; however, these values were all lower when compared with corn. When nursery diets were formulated on an equal SID AA basis, there were no differences in ADG among pigs fed any of the diets.

scholarly journals PSIII-35 The effects of cold pelleting and separation of fine corn particles on growth performance of nursery pigs

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 371-371
Author(s):  
Caitlin E Evans ◽  
Marut Saensukjaroenphon ◽  
Haley Wecker ◽  
Jason C Woodworth ◽  
Cassandra K Jones ◽  
...  
Keyword(s):  
Growth Performance ◽  
Block Design ◽  
Hot Water ◽  
Nursery Pigs ◽  
Complete Diet ◽  
Randomized Complete Block Design ◽  
Nursery Pig ◽  
Pig Performance ◽  
Dietary Treatments ◽  
Ground Corn

Abstract A total of 320 pigs (DNA 241×600; initially 10.2 kg BW) were utilized in a 21-d experiment to determine the effects of corn fractionation and pelleting technique on nursery pig growth performance. There were 5 pigs per pen, 8 pens per treatment and 8 dietary treatments in a randomized complete block design. Treatments 1–3 contained 400 µm ground corn and were fed as either mash, pelleted using a steam conditioner plus traditional vertical ring die (steam pellet) or pelleted with hot water plus a horizontal die (cold pellet). Treatments 4–6 contained corn ground to 400 µm with fines &lt; 150 um removed and were fed as either mash, steam pellet or cold pellet. Treatments 7 and 8 contained ground corn with only fines &lt; 150 um steam or cold pelleted prior to dietary inclusion without complete diet pelleting. Overall, pigs fed mash diets had improved (P &lt; 0.05) ADG and d 21 BW compared to those fed steam pelleted diets with those fed cold pelleted diets being intermediate. There was no difference in G:F between pigs fed mash, steam pellet and cold pellet diets; however, pigs fed diets containing pelleted fines had decreased (P &lt; 0.05) G:F due to an observed increased feed wastage and sorting. There was no difference in growth performance between pigs fed diets with fines removed or not. Cold pelleting was a viable option to steam pelleting in the current experiment; however, pelleting diets reduced pig performance compared to pigs fed mash diets, which was unexpected. Further research is needed to validate the response to cold pelleting when the expected response to pelleting using steam conditioning is achieved.

scholarly journals PSVI-1 Dietary protease supplementation on growth performance and post-weaning diarrhea of nursery pigs

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 191-192
Author(s):  
Jorge Y Perez-Palencia ◽  
David A Clizer ◽  
Christian Ramirez-Camba ◽  
Ryan S Samuel ◽  
Crystal L Levesque
Keyword(s):  
Growth Performance ◽  
Phase 1 ◽  
Dietary Treatment ◽  
Experimental Period ◽  
Phase 2 ◽  
Deficient Diet ◽  
Nursery Pigs ◽  
Feeding Program ◽  
Dietary Treatments ◽  
Fecal Score

Abstract This experiment evaluated the effect of dietary protease supplementation on pig’s growth performance and post-weaning diarrhea in a 43-d trial. A total of 936 weaned pigs [21 d of age, initial BW 5.87 ± 0.31 kg] were used in a 2 × 2 factorial design (2 nutritional levels × 2 protease levels). The nutritional levels corresponded to a standard feeding program and a reduced feeding program (15% lower SID Lys) and without or with protease supplementation (0.0125% inclusion). Piglets were distributed in 36 pens with 26 pigs per pen and 9 replicates per dietary treatment. Pigs received a common Phase 1 diet and experimental diets in Phase 2, 3, and 4, (0.91, 3.4, 4.5, and 24.0 kg/pig, respectively). Phytase was included at 2,500 U in Phase 2 – 4, all diets met energy and AA:Lys requirements for nursery pigs. Feed intake and body weight were determined every 2 weeks. A pen fecal score assessment was performed at d7, 10, and 14. Performance data were analyzed using the PROC MIXED procedure and fecal score data using the PROC FREQ procedure (SAS Inst., Inc., Cary, NC). No significant interactions (P &gt; 0.05) were observed between dietary treatments. From d15 to 43 and during overall experimental period, pigs fed standard diets had greater BW, ADG, and G:F (P &lt; 0.05) than pigs fed deficient diets (Table 1). On d7, pigs fed deficient diet had more (X2 &lt; 0.05) soft and watery feces, and consequently less normal feces compared to pigs fed standard diets (Figure 1). On d7, 10, and 14, pigs fed diets with protease supplementation had more (X2 &lt; 0.05) normal feces compared to control pigs. Overall, effects of dietary protease supplementation on growth performance were not expressive under the conditions of this study but protease addition benefited intestinal health of nursery pigs.

Sign in / Sign up

Export Citation Format

Share Document