scholarly journals Impacts of bunk management on steer performance and ruminal hydrogen sulfide concentrations in steers fed modified distillers grains with solubles

2021 ◽  
Author(s):  
B W Neville ◽  
L A Lekatz ◽  
R L Moore ◽  
W J Pickinpaugh ◽  
C J Kassetas
Keyword(s):  
Hydrogen Sulfide ◽  
Growth Performance ◽  
Management Strategy ◽  
Management Strategies ◽  
Distillers Grains ◽  
Beef Steers ◽  
Marbling Score ◽  
Distillers Grains With Solubles ◽  
Dietary Adaptation ◽  
Quality Grade

Abstract Two experiments were conducted to evaluate the impacts of bunk management on dry matter intake (DMI), growth performance, carcass characteristic, and hydrogen sulfide (H2S) concentrations in beef steers fed modified distillers grains with solubles (MDGS; DM basis). In Experiment 1, 139 steers (440.4 ± 31.0 kg) were randomly assigned to one of 16 pens with pen randomly assigned to one of two treatments: 1) Control (CON, bunks managed to be devoid of feed prior to feeding), or 2) Over-fed (OVF, bunks managed to have minimum of 2.54 cm of feed remaining each morning) during adaptation. Following adaptation all steers in experiment 1 were transitioned to CON bunks and followed to finishing. In Experiment 2, 126 steers (445.4 ± 40.63 kg) were randomly assigned to one of 16 pens. Treatments in Experiment 2 were arranged in a 2 × 2 factorial and include the two bunk management strategies utilized in Experiment 1 (OVF or CON) and either 25% MDGS or 50% MDGS (DM basis). Ruminal H2S was measured via rumenocentesis during dietary adaptation. There were no differences (P ≥ 0.13) observed in either experiment for growth performance due to bunk management. In Experiment 1, OVF steers had greater (P = 0.001) DMI during adaptation; however, overall DMI was not different (P = 0.14) between treatments. In Experiment 2, DMI (d 0 to 104) tended to decrease (P = 0.09) with greater MDGS inclusion. Hot carcass weight, ribeye area, marbling score and quality grade were not affected (P ≥ 0.48) by either bunk management or MDGS inclusion. In Experiment 2, back fat (1.30 versus 1.17 ± 0.042 cm) and yield grade (3.2 versus 3.0 ± 0.11) were greater (P = 0.03) for CON steers compared to OVF but were not affected (P = 0.59) by MDGS inclusion. In Experiment 1, H2S tended (P = 0.07) to be greater in steers on OVF compared to CON. In Experiment 2, bunk management strategy did not impact (P = 0.82) H2S concentrations. There was a MDGS inclusion × day interaction for H2S with steers fed 50% MDGS having greater (P < 0.01) H2S concentrations compared to steers fed 25% MDGS on days 28 and 35. Bunk management strategy during adaptation did not impact growth performance but did reduce intake in Experiment 1. Yield grade decreased when OVF bunk management was applied throughout Experiment 2. Response of hydrogen sulfide concentrations in the rumen were variable and likely influenced by inconsistencies in bunk management and resulting DMI during the early portions of the feedlot study.

scholarly journals 224 Impact of bunk management strategy on animal performance, carcass characteristics, and hydrogen sulfide gas concentrations in steers fed modified distillers grains with solubles

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 130-131
Author(s):  
Leslie Lekatz ◽  
Bryan Neville
Keyword(s):  
Hydrogen Sulfide ◽  
Carcass Characteristics ◽  
Distillers Grains ◽  
Beef Steers ◽  
Adaptation Period ◽  
Animal Performance ◽  
Entire Study ◽  
Distillers Grains With Solubles ◽  
Carcass Characteristic ◽  
Treatment Interaction

Abstract The objective of this study was to evaluate the impacts of bunk management on animal performance, carcass characteristic, and hydrogen sulfide gas concentrations in beef steers fed modified distillers grains with solubles (MDGS; DM basis). One hundred and thirty-nine steers (initial BW = 240 ± 5.17 kg) were allocated into 16 pens and assigned to one of two treatments: 1) Control-managed bunks: bunks devoid of feed prior to feeding; and 2) Long-managed bunks: bunks with approximately 2.54cm of feed remaining at the time feeding. Treatments were applied during a 28-d adaptation period, during which time, steers were adapted to a common finishing ration containing 25% MDGS (DM basis). Ruminal hydrogen sulfide gas was collected by rumenocentesis from two steers from each of three pens per treatment on d 0, 7, 14, and 28, which correspond to days of diet transition. Animal performance data were collected throughout the study and carcass characteristic data were collected when steers reached market weight. There were no differences (P < 0.13) in BW, ADG, or F:G between treatments during the adaptation period or throughout the entire study. Steers managed with long bunks had greater (P = 0.001) intake during adaptation; however, overall DMI was not different (P = 0.14) between treatments. Hydrogen sulfide gas concentrations were not affected by the day x treatment interaction (P = 0.30) but were affected by day (P = 0.003) with hydrogen sulfide concentrations increasing throughout adaptation. Hydrogen sulfide concentrations tended (P = 0.07) to be greater in steers with long-managed bunks vs. control-managed bunks. There were no differences (P > 0.53) in carcass characteristics. In summary, bunk management had no effect on performance or carcass characteristics and only tended to impact hydrogen sulfide gas concentrations.

scholarly journals PSIX-9 Impacts of bunk management on feedlot performance, carcass characteristics, hydrogen sulfide concentration and blood oxygen saturation in steers fed 25 or 50% modified distillers grains plus solubles

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 422-422
Author(s):  
Rebecca L Moore ◽  
Cierrah J Kassetas ◽  
Leslie A LeKatz ◽  
Bryan W Neville
Keyword(s):  
Hydrogen Sulfide ◽  
Oxygen Saturation ◽  
Management Strategy ◽  
Distillers Grains ◽  
Feed Ratio ◽  
Sulfide Concentration ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
Feedlot Performance ◽  
Arterial Blood

Abstract One hundred and twenty-six yearling angus steers (initial body weight 445.87 ± 7.13 kg) were utilized in a 2 x 2 factorial design to evaluate the impacts of bunk management and modified distillers grains plus solubles (mDGS) inclusion on feedlot performance, hydrogen sulfide concentrations and blood oxygen saturation. Treatments included bunk management strategy either control bunk management (CON; clean bunks at the time of next day’s feeding) or long bunk management (LONG; feed remaining at time of next day’s feeding), and two inclusion rates of mDGS either 25% or 50% (DM Basis). On d 0, 7, 14, 21, 28 and 35 rumen gas samples were collected via rumenocentesis, and arterial blood samples were collected on two steers from each pen. No differences (P ≥ 0.09) were observed for dry matter intake, average daily gain and gain-to-feed ratio for bunk management or mDGS inclusion. Hot carcass weight, ribeye area, marbling score and quality grade were not affected (P ≥ 0.48) by either bunk management or mDGS inclusion. Back fat was greater (P = 0.04) for CON steers compared to LONG (1.30 vs 1.12 ± 0.05cm, respectively), but was not affected (P = 0.59) by mDGS inclusion. Steers on CON had greater (P = 0.03) yield grades compared to LONG (3.21 vs 2.96 ± 0.11, respectively). Bunk management strategy did not impact hydrogen sulfide concentrations or blood oxygen saturation (P = 0.82). Hydrogen sulfide concentrations increased (P &lt; 0.001) with increasing mDGS inclusion. Blood oxygen saturation was influenced by day of sampling (P = 0.01). Blood oxygen saturation was not affected (P = 0.07) by mDGS inclusion. The fact that ruminal hydrogen sulfide concentrations increased while blood oxygen saturation remained similar raises questions about the quantity of hydrogen sulfide and metabolic fate of excess hydrogen sulfide in the blood of ruminant animals.

scholarly journals Effects of increasing dietary level of a commercial liquid supplement on growth performance and carcass characteristics in feedlot steers

2018 ◽  
Vol 2 (2) ◽  
pp. 216-222
Author(s):  
Tara L Felix ◽  
Chloe J Long ◽  
Madeline R Stierwalt ◽  
Pedro H V Carvalho ◽  
Howard M Blalock
Keyword(s):  
Growth Performance ◽  
Block Design ◽  
Carcass Characteristics ◽  
Feedlot Cattle ◽  
Corn Silage ◽  
Distillers Grains ◽  
Dietary Level ◽  
Distillers Grains With Solubles ◽  
Feedlot Steers ◽  
Randomized Complete Block Design

Abstract Feeding cattle liquid supplements has become increasingly popular in the feedlot industry; however, optimal inclusion of liquid supplements in feedlot cattle diets is not known. The objectives of this study were to determine the optimal inclusion of liquid supplementation to maximize growth performance and improve carcass characteristics, as well as estimate the energy value of liquid supplementation when used as a direct corn replacement, for feedlot steers fed a concentrate-based diet. Two hundred and eighty steer calves were stratified by BW into light (BW = 208 ± 9 kg; n = 24) and heavy (BW = 275 ± 8 kg; n = 16) pens. Pens within BW block were randomly assigned to 1 of 4 supplements: 1) dry at 4.5% inclusion (0LIQ), 2) liquid (a proprietary blend from Quality Liquid Feeds; Dodgeville, WI) at 4.5% inclusion (4.5LIQ), 3) liquid at 9% inclusion (9LIQ), or 4) liquid at 13.5% inclusion (13.5LIQ). The remainder of the diet was 47.5% to 55.5% dry rolled corn, 20% corn silage, and 20% modified wet distillers grains with solubles (DM basis). Data were analyzed as a randomized complete block design and linear and quadratic were examined to determine effects of increasing dietary concentrations of liquid. Steers fed 4.5LIQ and 9LIQ had greater (quadratic; P ≤ 0.05) final BW, HCW, and NEm and NEg, and less DMI as a percent of BW compared to steers fed 13.5LIQ. Steers fed 0LIQ were intermediate and not different from other treatments. However, ADG and total BW gain did not differ (P ≥ 0.15) among treatments. Despite the lack of treatment effect on live measures of gain, feeding steers 4.5LIQ and 9LIQ resulted in greater carcass ADG (quadratic; P = 0.03), total carcass gain (quadratic; P = 0.04), and more efficient carcass gain (quadratic; P ≤ 0.01) compared to carcasses from steers fed 13.5LIQ. Feeding steers a liquid supplement at 9% of the diet, DM allowed for the greatest final BW and ADG in this study; however, there was no benefit of increasing liquid to 13.5%.

Short Communication: Effects of supplemental canola meal and various types of distillers’ grains on growth performance of backgrounded steers

2013 ◽  
Vol 93 (2) ◽  
pp. 281-286 ◽  
Author(s):  
W. Z. Yang ◽  
L. Xu ◽  
C. Li ◽  
K. A. Beauchemin
Keyword(s):  
Growth Performance ◽  
Conversion Efficiency ◽  
Short Communication ◽  
Distillers Grains ◽  
Protein Source ◽  
Canola Meal ◽  
Feed Conversion ◽  
Distillers Grains With Solubles ◽  
Dried Distillers Grains ◽  
Communication Effects

Yang, W. Z., Xu, L., Li, C. and Beauchemin, K. A. 2012. Short Communication: Effects of supplemental canola meal and various types of distillers’ grains on growth performance of backgrounded steers. Can. J. Anim. Sci. 93: 281–286. A growth study was conducted to investigate the effects of protein source on growth performance of backgrounded steers. Partly replacing barley grain with canola meal (CM), corn dried distillers’ grains with solubles (cDDGS) or fractionated corn dried distillers grains with solubles (fDDGS) increased averaged daily gain and feed conversion efficiency of backgrounded steers. Steers fed corn DDGS (cDDGS, fDDGS) improved feed conversion efficiency compared with steers fed wheat dried distillers’ grain with solubles (wDDGS). These results indicate that inclusion of protein ingredients in barley-based diets is necessary to improve growth performance of growing cattle. To maximize profits, the choice of protein source in cattle rations will depend upon availability and cost of ingredients.

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