PSXV-23 Effects of a nutritional packet composed of live yeast, vitamins, and electrolytes on the feeding behavior of intensively managed beef steers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 323-324
Author(s):  
Kymberly D Coello ◽  
Andrea M Osorio ◽  
Kaue Tonelli Nardi ◽  
Kaliu G Scaranto Silva ◽  
Angel A Raudales ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Block Design ◽  
Random Effect ◽  
Neutral Detergent Fiber ◽  
Experimental Unit ◽  
Beef Steers ◽  
Eating Time ◽  
Ch4 Production ◽  
Intensively Managed ◽  
Live Yeast

Abstract The effect of a nutritional-packet was evaluated on time spent ruminating, eating, and chewing (ruminating + eating) by intensively managed beef steers consuming a finishing diet during the final 65 d of feeding prior to slaughter. Furthermore, the influence of behavior on CH4 production was determined. Twenty-four Angus-crossbreed steers were distributed into pens with SmartFeed (C-Lock) technology in which they were treated with: control or nutritional-packet [0.29% DM basis; live yeast (8.7 Log CFU/g); Vitamin C (5.4 g/kg); Vitamin B1 (13.33 g/kg); NaCl (80 g/kg); KCl (80 g/kg)]. An ear tag containing multiple accelerometers (CowManager) was placed on steers, and such device continuously recorded rumination and eating time (min/day). Enteric CH4 emissions were measured for 15 d using the SF6 tracer technique. Feeding behavior data were analyzed as a randomized complete block design using the MIXED procedure of SAS. The model included the fixed effect of treatment and the random effect of block. Steer was considered experimental unit. The GLM procedure of SAS was used for regressing behavior and CH4 production data. There were no differences between treatments for time (within 24 h) spent ruminating, eating, or chewing (P ³ 0.197). When nutrient intake was taken into account, no differences (P ³ 0.139) were observed between treatments for time spent ruminating, eating, and chewing per kg of dry matter, organic matter, neutral detergent fiber intake, and acid detergent fiber intakes. The production of CH4 was not affected by time spent ruminating (0.93 g/min; R2 = 0.0003; P = 0.935), eating (3.34 g/min; R2 = 0.03; P = 0.409), or chewing (0.69 g/min; R2 = 0.006; P = 0.728). The feeding behavior of intensively managed beef steers during the final 65-d of feeding was not driven by the nutritional-packet supplied, neither was CH4 production associated with feeding behavior variables measured.

305 Methane Emissions and Apparent Total Tract Nutrient Digestibility of Feedlot Beef Steers Under Intensive Management with or Without an Added Nutritional Packet

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 166-167
Author(s):  
Andrea M Osorio ◽  
Kaue T Tonelli Nardi ◽  
Igor Gomes Fávero ◽  
Kaliu G Scaranto Silva ◽  
Kymberly D Coello ◽  
...  
Keyword(s):  
Treatment Period ◽  
Repeated Measures ◽  
Fixed Effects ◽  
Block Design ◽  
Random Effect ◽  
Methane Emissions ◽  
Nutrient Digestibility ◽  
Experimental Unit ◽  
Beef Steers ◽  
Ch4 Production

Abstract The effects of a nutritional packet were evaluated on CH4 emissions and apparent total tract nutrient digestibility of feedlot beef steers. Thirty Angus-crossbred steers (BW = 542 ± 8.4 kg) were used in a randomized complete block design and allocated into pens equipped with SmartFeed (C-Lock; 15 steers/treatment). Steers were consuming a steam-flaked corn-based diet (88% concentrate DM basis) ad libitum for the last 65 d on feed, and received the following treatments: 1) control and 2) a nutritional packet [0.29% DM basis; live yeast (Saccharomyces cerevisiae; 8.7 Log CFU/g); Vitamin C (5.4 g/kg); Vitamin B1 (13.33 g/kg); NaCl (80 g/kg); KCl (80 g/kg)]. Methane emissions and apparent total tract nutrient digestibility were measured during 3 periods with 5-d of collections each. Gas emissions from steers were measured utilizing the SF6 tracer technique. Feed and fecal samples were collected once and twice (0700 h and 1600 h) daily, respectively, to determine digestibility of nutrients using iNDF as an internal marker. Steer was considered the experimental unit. Data were analyzed as repeated measures using the MIXED procedure of SAS with the fixed effects of treatment, period, and their interaction, and the random effect of block. No treatment × period interactions (P ≥ 0.125) were observed for DMI and any of the CH4 production variables (g/day, g/kg BW0.75, g/nutrient intake, and g/nutrient digested). Moreover, treatments did not affect digestibility of DM, OM, or ADF (P ≥ 0.300); however, digestibility of NDF was increased for treated cattle (P = 0.013), which resulted in a tendency (P = 0.098) to decrease CH4 production in g per kg NDF intake and decreased (P = 0.020) grams CH4 per kg NDF digested. The nutritional packet may be altering ruminal fermentation on intensively managed steers and improving fiber digestibility, which can have benefits on CH4 emission intensity.

scholarly journals PSXIV-18 Feeding behavior of feedlot steers fed combinations of feed additives

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 437-437
Author(s):  
Evandro Dias ◽  
Jhones O Sarturi ◽  
Tosha opheim ◽  
Darren D Henry ◽  
Carly A Hoffmann ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Block Design ◽  
Random Effect ◽  
Feedlot Cattle ◽  
Feed Additives ◽  
Feed Additive ◽  
Experimental Unit ◽  
Beef Steers ◽  
Single Animal ◽  
The Difference

Abstract The effects of dietary feed additives (single or combination) on feeding behavior of feedlot cattle, and the representativeness of one individual animal within the experimental unit were evaluated. Crossbred-Angus beef steers (n = 240; initial BW = 319 ± 29 kg) were used in an randomized complete block design (block = BW), 4 steers/pen (experimental unit; n = 12/treatment), and randomly assigned to the following treatments: 1) no feed additive; 2) monensin (300 mg/animal-daily) + tylosin (90 mg/animal-daily); 3) monensin + L. salivarius L28 (106 CFU/animal-daily); 4) tylosin; and 5) L. salivarius. Animals were fed (steam-flaked corn-based finishing diet) once-daily (clean-bunk management). Feeding behavior (24 h; 5 min intervals) was measured as time spent in activities. In addition, one steer/pen was individually assessed. The Glimmix procedures of SAS were used for statistical analyses (fixed effect = treatment; random effect = block). Feed additives did not affect time spent eating (163 min/d; P = 0.42); ruminating (71 min/d; P = 0.82); chewing (234 min/d; P = 0.21); drinking (18 min/d; P = 0.59); ruminating/kg of DM (9 min/d; P = 0.75); chewing/kg of DM (30 min/d; P = 0.40); resting (1085 min/d; P = 0.25); or other activities (102 min/d; P = 0.32). The difference between feeding behavior pen average and the value from the single animal marked within the same pen was different from zero for rumination (P ≤ 0.04), eating (P = 0.03), and other activities (P = 0.04), while not different from zero for chewing (P ≥ 0.21), drinking (P ≥ 0.13; except for one treatment P < 0.01), and resting (P ≥ 0.12; tendency exhibited by one treatment P < 0.09). Feed additives seem to not affect feeding behavior half-way-through the finishing phase. One animal within a 4-animal/pen unit did not represent the pen average feeding behavior.

315 Feeding Behavior of Beef Steers Consuming Finishing Diets with Added Nutritional Packet

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 170-170
Author(s):  
Igor Gomes Fávero ◽  
Jhones O Onorino Sarturi ◽  
Kaue T Tonelli Nardi ◽  
Daren D Henry ◽  
Kaliu G Scaranto Silva ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Block Design ◽  
Vitamin B1 ◽  
Experimental Unit ◽  
Beef Steers ◽  
Yeast Saccharomyces Cerevisiae ◽  
Eating Time ◽  
Finishing Diets ◽  
D 63 ◽  
Randomized Complete Block Design

Abstract The effects of a nutritional packet fed to beef steers during the feedlot finishing phase (final 64 d) on feeding behavior were evaluated. Crossbred-Angus steers (n = 120; initial BW = 544 ± 52 kg) were assigned to 30 pens (4 steers/pen; 15 pens/treatment; pen = experimental unit) in a randomized complete block design. Steers were fed, ad libitum, a steam-flaked corn-based finishing diet and treatments were applied as follows: 1) control and 2) 30 g/steer-daily (DM-basis) of a nutritional packet (containing live yeast [Saccharomyces cerevisiae; 8.7 Log CFU/g], vitamin C [5.4 g/kg], vitamin B1 [13.33 g/kg], NaCl [80 g/kg], and KCl [80 g/kg]). The nutritional packet used ground corn as a carrier and was included at 1% of diet DM. Orts were subtracted from the total dietary DM offered to calculate DM intake. Feeding behavior activities were visually assessed by trained personnel twice (d 27 and d 63) for 24 h, when time spent on each activity was recorded every 5 min. Data were analyzed using the GLIMMIX procedure of SAS. Treatment × period interactions (P ≤ 0.03) were observed for eating time (min/d) and eating rates (min/kg of consumed DM, OM, fiber, and digestible DM, OM, and fiber), in which steers fed the nutritional packet spent less time in such activities on d 27 and more time during the assessment on d 63, compared with control. Regardless of period, steers fed the nutritional packet tended (P = 0.07) to spend less time chewing per kg of digestible ADF. Rumination (P ≥ 0.28), drinking (P ≥ 0.40), active (P ≥ 0.92), and resting (P ≥ 0.53) times were not affected by treatment. The nutritional packet affected eating behavior more intensively during the first 27 d of treatment, and digestible ADF seems to be the main feed-fraction inducing such effect.

scholarly journals Evaluation of different inclusion levels of dry live yeast impacts on various rumen parameters and in situ digestibilities of dry matter and neutral detergent fiber in growing and finishing beef cattle

2019 ◽  
Vol 97 (12) ◽  
pp. 4987-4998 ◽  
Author(s):  
Caitlyn M Cagle ◽  
Luiz Fernando D Batista ◽  
Robin C Anderson ◽  
Mozart A Fonseca ◽  
Matt D Cravey ◽  
...  
Keyword(s):  
Block Design ◽  
Random Effect ◽  
Gas Production ◽  
Neutral Detergent Fiber ◽  
Repeated Measure ◽  
Beneficial Result ◽  
Ch4 Concentration ◽  
Live Yeast

Abstract This study evaluated the effects of supplementing dry live yeast (LY; Saccharomyces cerevisiae) on in vitro gas production (IVGP) fermentation dynamics, pH, and CH4 concentration at 48 h, and in situ rumen parameters and digestibility of DM (DMD) and NDF (NDFD) of growing cattle during 3 feeding phases: grower (GRW) for 17 d (38% steamed-flaked corn; SFC), transition (TRANS) for 15 d (55.5% SFC: 1.2 Mcal/kg NEg), and finisher (FIN) for 13 d (73% SFC: 1.23 Mcal/kg NEg). Twenty British-crossbred, ruminally cannulated steers (183 kg ± 44 kg) 6 mo of age were blocked by weight into 5 pens containing Calan gate feeders and received a control (CON) diet (17.2% CP, 35.8% NDF, 86.7% DM) without LY on days −12 to 0. After that, animals were randomly assigned to treatments (TRT), 5 animals per TRT: CON or LY at inclusion rates of 5 g/d (LY1), 10 g/d (LY2), or 15 g/d (LY3) top dressed every morning at 0800 for 45 d. The DMD and NDFD were assessed during 7 separate collection days using in situ nylon bags containing 5 g of GRW, TRANS, or FIN diets, incubated at 1200 for 48 h. Protozoa counts (PC) were determined during 5 collection periods. Data were analyzed as a repeated measure within a randomized complete block design, assuming a random effect of the pen. For GRW, TRT altered the total gas production of the nonfiber carbohydrate (NFC; P = 0.045) and the fractional rate of degradation (kd) of the fiber carbohydrate (FC) pool (P = 0.001) in a cubic pattern (P ≤ 0.05): LY2 had the most gas production and fastest kd. TRT also influenced DMD (P = 0.035) and NDFD (P = 0.012) with LY2 providing the greatest digestibility. For TRANS, TRT tended to affect the NFC kd (P = 0.078) and influenced pH (P = 0.04) and DMD (P < 0.001) in which LY2 yielded the fastest kd, highest pH, and greatest DMD. For FIN, there was an effect of TRT on total gas production (P < 0.001) and kd (P = 0.004) of the NFC pool, FC kd (P = 0.012), in vitro CH4 concentration (P < 0.001), PC (P < 0.001), DMD (P = 0.039), and NDFD (P = 0.008). LY1 had the highest PC and provided the greatest DMD and NDFD. LY2 had the fastest kd of both the NFC and FC pools and had the least CH4 concentration. LY3 had the greatest NFC gas production. No specific dose–response pattern was observed, but 10 g/d provided the most beneficial result for all diets. We concluded that supplementation with LY affected IVGP as well as ruminal parameters and digestibilities.

PSVI-30 Feedlot performance and carcass characteristics of beef steers under intensive management with or without an added nutritional packet

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 446-446
Author(s):  
Andrea M Osorio ◽  
Kaue Tonelli Nardi ◽  
Igor Gomes Fávero ◽  
Kaliu G Scaranto Silva ◽  
Kymberly D Coello ◽  
...  
Keyword(s):  
Block Design ◽  
Random Effect ◽  
Vitamin B1 ◽  
Carcass Characteristics ◽  
Quality Data ◽  
Experimental Unit ◽  
Beef Steers ◽  
Intensive Management ◽  
Feedlot Performance ◽  
Yeast Saccharomyces Cerevisiae

Abstract The effects of a nutritional packet on performance and carcass characteristics of feedlot beef steers were evaluated. Thirty Angus-crossbred steers (BW = 542 ± 8.4 kg) were used in a randomized complete block design and allocated into pens with SmartFeed (C-Lock; 15 steers/treatment). Steers were consuming a steam-flaked corn-based finishing-diet, ad libitum, for the last 65-d on feed prior to slaughter, in which treatments were: 1) control and 2) a nutritional-packet [0.29% DM basis; live yeast (Saccharomyces cerevisiae; 8.7 Log CFU/g); Vitamin C (5.4 g/kg); Vitamin B1 (13.33 g/kg); NaCl (80 g/kg); KCl (80 g/kg)]. Individual BW was recorded every 14 d and carcass quality data was collected at slaughter. Steer was considered the experimental unit. The MIXED procedure of SAS was used with the fixed effect of treatment and the random effect of block. Total DMI was unaffected (P = 0.610) by treatment from d 0–65; however, control steers had greater (P = 0.030) DMI from d 54–65. The G:F was unaffected (P = 0.830) by treatment from d 0–35; however, it was greater (P ≤ 0.001) for steers fed the nutritional packet from d 0–50, and 0–65. Treatment did not affect (P = 0.920) ADG from d 0–35, however it increased (P ≤ 0.001) ADG from d 0–50 and tended (P = 0.060) to increase ADG from d 0–65. Carcass adjusted final BW tended (P = 0.060) to increase by 28% for treated cattle, whereas the Longissimus dorsi area tended to decrease (P = 0.090). No differences (P = 0.240) were observed for fat thickness, while yield-grade (P = 0.03) increased for treated cattle. The nutritional packet appears to improve performance in the final days of feeding steers under intensive management, and energy partitioning may be altered to fat deposition.

scholarly journals 230 Effects of encapsulated calcium-ammonium nitrate on performance and methane production of beef steers grazing mixed winter forage

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 166-167
Author(s):  
Andrea M Osorio Doblado ◽  
Sebastian E Mejia-Turcios ◽  
Miranda K Stotz ◽  
David Vargas ◽  
Rafael Canonenco de Araujo ◽  
...  
Keyword(s):  
Ammonium Nitrate ◽  
Methane Production ◽  
Repeated Measures ◽  
Block Design ◽  
Random Effect ◽  
Experimental Unit ◽  
Beef Steers ◽  
Adaptation Period ◽  
Calcium Ammonium Nitrate ◽  
Supplement Intake

Abstract The effects of encapsulated calcium-ammonium nitrate (eCAN) on in vivo methane production and performance were evaluated. A generalized randomized block design was used with beef steers grazing a mixed winter forage (Triticum aestivum, Triticosecale rimpaui, and Secale cereale) for 49 d. Thirty-six Angus-crossbred steers (332 ± 53 kg) were blocked by BW and randomly assigned to 1 of 3 treatments: 1) winter pasture + corn (WC), 2) WC + 328 mg/kg of BW eCAN (WCN) and 3) WC + 124 mg/kg of BW UREA (WCU), all supplemented with corn (0.3% BW treatments). Treatments WCN and WCU were isonitrogenous. A 14d adaptation period was used to adapt cattle to treatments. Methane emissions were measured using the sulfur hexafluoride tracer technique. Blood samples and BW were taken at d 0, 24, 35, and 49. Supplemental corn and NPN orts were collected daily. Data were analyzed using the MIXED procedure of SAS with the fixed effect of treatment and random effect of pasture (block); BUN, supplement intake and CP intake were analyzed with repeated measures. Steer was considered the experimental unit. Methane production was not different (P > 0.05) considering g/d, g/kg of BW, g/kg of MBW, or g/kg of ADG. Treatments did not affect ADG (P = 0.941). Supplement intake was affected by treatment (P < 0.001), with WC (0.979 kg) being greater compared to WCU (0.887 kg) and WCN (0.706 kg). Total CP intake increased (P < 0.001) with WCU (0.155 kg) and WCN (0.116 kg), compared to WC (0.074 kg), which did not have a non-protein source. Blood urea nitrogen was affected by day, with d 24 (18.598 mg/dL) being greater compared to d 0 (8.215 mg/dL), 35 (10.549 mg/dL) and 49 (14.5744 mg/dL). The eCAN did not effectively replace urea as a NPN source to mitigate enteric methane.

Determining the Rate of Ergot-alkaloid Degradation in Toxic Endophyte-infected Tall Fescue Hay and Haylage During Long Term Storage

2021 ◽  
Vol 99 (Supplement_2) ◽  
pp. 22-22
Author(s):  
Charles A Zumbaugh ◽  
Susannah A Gonia ◽  
Kathryn M Payne ◽  
Thomas B Wilson
Keyword(s):  
Tall Fescue ◽  
Ergot Alkaloid ◽  
Fixed Effects ◽  
High Performance ◽  
Nutritive Value ◽  
Day Treatment ◽  
Random Effect ◽  
Storage Period ◽  
Neutral Detergent Fiber ◽  
Experimental Unit

Abstract The objectives of this experiment were to determine changes in the nutritive value and ergot alkaloid concentrations of endophyte-infected tall fescue hay and haylage during a 180-d storage period. Forage from a single field of Kentucky-31 tall fescue was cut for hay in late June and allowed to dry in the field. The dry matter (DM) of the windrow of cut forage was measured every 2 h after clipping. Forage was sampled from the windrow in 6 location blocks once forage DM reached target levels for haylage and hay treatments. Haylage and hay samples were taken when the DM of the windrow reached 50% and 80%, respectively. Seven subsamples of each treatment within block were chopped to 1.91 cm in length with a lettuce chopper and vacuum sealed in oxygen-excluding bags. Sample bags were stored indoors and opened at 30 d intervals over the 180-d storage period. Samples were analyzed for pH, nutritive value, and individual ergot alkaloid concentrations using high-performance liquid chromatography. Within each storage day, treatment within block was considered the experimental unit. Data were analyzed in SAS using the MIXED procedure with fixed effects of treatment, day, and the treatment by day interaction. Location block was considered a random effect. As expected, pH was decreased for haylage compared to hay at all time points (P < 0.01) and DM was greater (P < 0.01) for hay compared to haylage. Neutral detergent fiber values were greater (P < 0.01) for hay compared to haylage and declined during storage (P < 0.01). Total ergot alkaloid concentrations did not differ by treatment (P = 0.61), but ergovaline concentrations declined (P < 0.01) during storage. Collectively, these results indicate minimal differences in nutritive value and ergot alkaloid concentrations between hay and haylage during storage, and that ergovaline concentrations decline during storage.

scholarly journals 251 Evaluation of Condensed Algal Residue Solubles as an Ingredient in Cattle Finishing Diets

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 137-138
Author(s):  
Calvin Gibbons ◽  
Andrea K Watson ◽  
Galen E Erickson ◽  
Bradley M Boyd ◽  
Levi J McPhillips ◽  
...  
Keyword(s):  
Great Plains ◽  
Fixed Effects ◽  
Block Design ◽  
Random Effect ◽  
Distillers Grains ◽  
Experimental Unit ◽  
Omega 3 ◽  
Finishing Diets ◽  
Randomized Block Design ◽  
Algae Oil

Abstract Algae oil production for Omega-3 fatty acid supplementation yields a byproduct called Condensed Algal Residue Solubles (CARS; 25.4% DM, 19.3% CP, 8.3% Fat, 9.96% Na on DM basis), de-oiled algae cells with residual fermentation substrates. This study evaluated the use of CARS in feedlot finishing diets. Crossbreed steers, (n=480) were blocked and stratified by initial body weight (BW) into 4 blocks, and assigned randomly to treatments. Treatments were designed as a 2 x 3 factorial with 3 inclusions of CARS (0, 2.5, 5% of diet DM) and 2 different base diets representing Northern and Southern Great Plains diets. The Southern diets contained steam flaked corn and dry distillers grains while the Northern diets had dry rolled and high moisture corn with wet distillers grains. CARS replaced corn in both diets. All blocks were harvested after 148 days on feed. Performance data were analyzed as a randomized block design with CARS inclusion, base diet, and interactions as fixed effects, BW block as a random effect and pen (n=48) as the experimental unit. Orthogonal contrasts were used to test linear and quadratic effects of CARS inclusion. There were no significant interactions between CARS inclusion and diet type (P ≥ 0.49). Main effects of CARS indicated positive quadratic responses for carcass adjusted ADG, G:F, 12th rib back fat, yield grade (P < 0.01; increasing to 2.5% inclusion, decreasing at 5%) and hot carcass weight was both linear and quadratic (P ≤ 0.01 and P ≥ 0.06 respectively; 969, 977, 935 as CARS increased). Linear decrease in DMI, final adjusted BW and ribeye area (P ≤ 0.01) as CARS increased. Cattle fed the Southern diets had greater ADG and G:F compared to Northern diets (P < 0.01). Including 2.5% CARS in the diet improved feed efficiency in both Northern and Southern based feedlot diets.

309 Nutrient Digestibility of Beef Steers Consuming Finishing Diets with an Added Nutritional Packet

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 168-169
Author(s):  
Kaue T Tonelli Nardi ◽  
Jhones O Onorino Sarturi ◽  
Darren D Henry ◽  
Francine M Ciriaco ◽  
Nelson O Huerta-Leidenz ◽  
...  
Keyword(s):  
Block Design ◽  
Vitamin B1 ◽  
Nutrient Digestibility ◽  
Experimental Unit ◽  
Beef Steers ◽  
Yeast Saccharomyces Cerevisiae ◽  
Finishing Diets ◽  
Time Of Feeding ◽  
Internal Marker ◽  
Feed Samples

Abstract The effects of a nutritional packet fed to beef steers during the final 64 d of the feedlot finishing phase on apparent total tract nutrient digestibility were evaluated. Angus-crossbred steers (n =120; initial BW = 544 ± 52 kg) were assigned to 30 pens (4 steers/pen; 15 pens/treatment; pen = experimental unit) in a randomized complete block design. A steam-flaked corn-based finishing diet was fed ad libitum and treatments applied as follows: 1) control and 2) 30 g/steer-daily (DM-basis) of the nutritional packet [containing live yeast (Saccharomyces cerevisiae; 8.7 Log CFU/g), vitamin C (5.4 g/kg), vitamin B1 (13.33 g/kg), NaCl (80 g/kg) and KCl (80 g/kg)]. The nutritional packet used ground corn as a carrier and was included at 1% of diet DM. Orts were quantified daily (if any) and subtracted from the total dietary DM offered to calculate DM intake. Fecal samples were collected twice daily (0700 and 1700 h) for 5 consecutive days (d 47 to 51) from at least 3 steers within pen. Feed samples were collected daily at time of feeding (0630 h). Fecal and feed samples were composited to represent the collection period, dried (55oC), ground (1 mm), and analyzed to assess DM, OM, NDF, ADF, and hemicellulose. In situ (288 h) iNDF was used as an internal marker to measure apparent total tract nutrient digestibility. Data were analyzed using the GLIMMIX procedure of SAS. Intake of DM, OM, and fiber components during the digestibility period was not affected (P ≥ 0.44) by treatment. Steers fed the nutritional packet had increased apparent total tract digestibility of OM (P = 0.02), DM (P = 0.01), NDF (P = 0.02), ADF (P = 0.01), and hemicellulose (P = 0.08; tendency). Improved nutrient digestibility without affecting nutrient intake may warrant an enhanced energy deposition in the carcass.

scholarly journals PSIV-16 Effect of a 1-monoglyceride, 1,2-diglyceride of butyric-, caproic- and caprilic acid, and Avilamycin on performance and intestinal E. coli when fed to piglets challenged with E. coli

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 188-189
Author(s):  
Michael Coelho ◽  
Peter Ader
Keyword(s):  
Caprylic Acid ◽  
Block Design ◽  
Random Effect ◽  
Fixed Effect ◽  
Experimental Unit ◽  
Infection Model ◽  
E Coli ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
T1 And T2

Abstract This study examined the effect of 1-monoglycerides and 1,2-diglycerides of butyric-, caproic- and caprylic acid (SILOHealth™ 104L [monoglycerides]) and avilamycin on day 14 and 21 post weaning performance of E. coli (GN-Ent and O157:H7) day 5 challenged piglets fed corn/soy diets that met or exceeded current NRC (2012) recommendations. A total of 96, Choice Genetics CG32, piglets were used in a randomized complete block design with pen as the experimental unit, treatment as the fixed effect, and block as the random effect (4 piglets/pen x 3 treatments x 8 replications). Pigs were blocked by sex and weight and were orally dosed with 5 ml (1x109 CFU/g, strain GN-Ent and O157:H7) E. coli d 5 after weaning (Ec). The treatment were: NC with Ec; T1=NC + 3 kg/MT monoglycerides; T2=NC+ 80 ppm avilamycin. Least significant difference was used to compare means of treatment. Mortalities and pen removals were weighed and recorded. The E. coli infection model was effective in causing E. coli mortality of 25% at d14 post weaning and 33% at d21 post weaning in NC. T1 and T2 reduced mortality versus NC at d14 (25, 3 and 0%, P < 0.05) and d21 (33, 4 and 0%, P < 0.05), increased ADG at d14 (203, 255 and 259 g, P < 0.05) and d21 (456, 511 and 515 g, P < 0.05), decreased FCR at d21 (1.90, 1.85 and 1.83, P < 0.05), and decreased intestinal E. coli, log 10 of CFU/g, versus NC (4.1, 2.2 and 2.1, P < 0.05). Monoglycerides and avilamycin performance, mortality and intestinal E. coli log 10 were not significantly different at P < 0.05. In conclusion, the use of monoglycerides improved ADG, reduced FCR, reduced mortality and reduced intestinal E. coli log 10 at day 14 and 21 post weaning versus NC and monoglycerides were not significant different (P < 0.05) than avilamycin.

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