Meat Science Commons^™

Effects Of Feeding A Vitamin And Mineral Supplement To Cow-Calf Pairs Grazing Native Range, Jennifer L. Hurlbert, Friederike Baumgaertner, Kacie L. Mccathy, Timothy Long, Cody Wieland, Kevin K. Sedivec, Carl R. Dahlen

Department of Animal Science: Faculty Publications

Our objectives were to evaluate the impacts of providing vitamin and mineral (VTM) supplements to cow-calf pairs during the summer grazing period on cow and calf performance and liver concentrations of minerals. During a two-year period, 727 crossbred cows and their calves (initial cow BW = 601.7 ± 48.1 kg; calf BW = 87.8 ± 5.0 kg; n = 381 in year 1, n = 346 in year 2) from the Central Grasslands Research Extension Center (Streeter, N.D.) were blocked by parity (young [parity 1 to 3], and old [parity 4+]) and randomly assigned to pastures at the beginning …

Impact Of Shade In Beef Feedyards On Performance, Ear Temperature, And Heat Stress Measures, Thomas M. Winders, Brett A. Melton, Boyd M. Boyd, Casey N. Macken, J. C. Macdonald, Galen E. Erickson

Department of Animal Science: Faculty Publications

A 2-yr study (year 1: March to September 2017; year 2: February to August 2018) was conducted using crossbred steers (year 1: n = 1677; initial body weight [BW] = 372 kg, SD = 47; year 2: n = 1713; initial BW = 379 kg, SD = 10) in a commercial feedyard study in Eastern NE to determine the effects of shade on cattle performance, ear temperature, and cattle activity. Two treatments were evaluated using a randomized complete block design (n = 5 blocks based on arrival). Treatments were assigned randomly to pens and consisted of five pens without …

The Effects Of Excess Dietary Sulfur Using Supplemental Sodium Sulfate On Beef Steer, Heifer, And Progeny Productive And Physiological Responses, Jamie Hawley

Graduate Theses and Dissertations

For studies 1 through 3, 20 steers of predominantly Angus breeding, were stratified by body weight (279 ± 13.2 kg), assigned randomly to 6 paddocks, and fed a low S ground corn and soybean meal supplement that did not contain any byproduct feeds (0.31% total dietary S; LS) or LS supplement with an additional 0.25% S provided from sodium sulfate (Na2SO4; 0.58% total dietary S; HS) for a 114-d growing phase. Steers were moved to feedlot (373 ± 0.2 kg), remained on prior dietary S treatments, and fed corn and soybean meal diets (0.19 and 0.42% total dietary S; LS …

Age End-Point Effects On Performance, Carcass Measurements, And Tenderness In Goats, Kelsey Lynn Basinger

Graduate Theses and Dissertations

Goat meat is consumed all across the world, especially in developing countries. Moreover, the meat goat industry is growing in popularity in the United States due to ethnic demand of an increasing immigrant population. The objective of this study was to measure age end-point effects on performance, carcass measurements, and tenderness in goats. Intact Kiko × Boer F1 male (n = 46) kids were born on pasture in the spring of 2014 and 2015, weaned at approximately 100 d of age, and weighed monthly. Creep feed was offered to kids from birth to weaning and a high concentrate diet was …

Cooled Perch Effects On Performance And Well-Being Traits In Caged White Leghorn Hens, J Y. Hu, P Y. Hester, M M. Makagon, G Vezzoli, R S. Gates, Y Xiong, H W. Cheng

Department of Animal Science: Faculty Publications

We assessed the effects of chilled water cooling perches on hen performance and physiological and behavioral parameters under “natural” high temperatures during the 2013 summer with a 4-hour acute heating episode. White Leghorns at 16 wk of age (N = 162) were randomly assigned to 18 cages (n = 9) arranged into 3 units. Each unit was assigned to one of the 3 treatments through 32 wk of age: 1) cooled perches, 2) air perches, and 3) no perches. Chilled water (10◦C) was circulated through the cooled perches when cage ambient temperature exceeded 25^◦C. At the age of …

Effects Of Increasing Soybean Hulls In Finishing Diets With Wet Or Modified Distillers Grains Plus Solubles On Performance And Carcass Characteristics Of Beef Steers, Curtis Bittner, Brandon L. Watson, C. J. Schneider, Dirk Burken, L. J. Johnson, Terry J. Klopfenstein, Galen E. Erickson

Department of Animal Science: Faculty Publications

Two experiments evaluated feeding soybean hulls (SBH) in finishing diets that contain distillers grains plus solubles on performance and carcass characteristics. Dietary concentrations of SBH were 0, 12.5, 25, and 37.5% of diet DM. In Exp. 1, 167 crossbred yearling steers (395 ± 22 kg of BW) were fed for 117 d in a randomized block design in which pelleted SBH replaced dry-rolled corn. All diets contained 25% modified distillers grains plus solubles, 15% corn silage, and 5% liquid supplement. As SBH concentration increased, DMI decreased linearly (P = 0.04). Gain and G:F decreased linearly (P < 0.01) in response to increasing concentrations of SBH, which decreased relative energy value from 91 to 79% of corn. Hot carcass weight linearly decreased (P < 0.01) by 24 kg as SBH increased. In Exp. 2, a randomized block design used 160 backgrounded steer calves (363 ± 16 kg of BW) in a 138-d finishing study with 0, 12.5, 25, or 37.5% SBH in the meal form. Basal ingredients consisted of a 1:1 ratio of high-moisture corn and dry-rolled corn, 40% wet distillers grains plus solubles, 8% sorghum silage, and 4% dry meal supplement. There was a tendency (P = 0.12) for a quadratic increase in ADG and G:F as dietary SBH increased, with numerically greatest ADG and G:F with 12.5% SBH. Feeding 12.5 to 25% SBH with 40% wet distillers grains plus solubles (Exp. 2) had little effect on performance but decreased ADG and G:F in diets with 25% modified distillers grains plus solubles (Exp. 1).

High-Sulfur In Beef Cattle Diets: A Review, M. E. Drewnoski, D. J. Pogge, S. L. Hansen

Department of Animal Science: Faculty Publications

While many cattle feeding areas in the United States have long dealt with high sulfate water, increased feeding of ethanol co-products such as distillers grains with solubles to beef cattle has led to a corresponding increase in dietary sulfur. As a result, sulfur metabolism in the ruminant has been the focus of many research studies over the past ten years, and advances in our knowledge have been made. Excessive sulfur in cattle diets may have implications on trace mineral absorption, dry matter intake, and overall cattle growth. This review will focus on what we have learned about the metabolism of …

Application Of Broken-Line Analysis To Assess Floor Space Requirements Of Nursery And Grower-Finisher Pigs Expressed On An Allometric Basis, Anna K. Johnson, H. W. Gonyou, M. C. Brumm, E. Bush, J. Deen, S. A. Edwards, T. Fangman, J. J. Mcglone, M. Meunier-Salaun, R. B. Morrison, H. Spoolder, P. L. Sundberg

Anna K. Butters-Johnson

Few issues in swine production are as complex as floor space allowances. One method for pork producers to calculate floor space allowance (A) is to convert BW into a 2-dimensional concept yielding an expression of A = k * BW(0.667). Data on ADG, ADFI, and G:F were obtained from published peer-reviewed studies. Five data sets were created: A = grower-finisher pigs, fully slatted floors, and consistent group size; B = grower-finisher pigs and fully slatted floors (group size did not need to be consistent); C = grower-finisher pigs, partially slatted floors, and consistent group size; D = grower-finisher pigs, partially …

Effectiveness Of Albendazole Against Parasites And Cow And Calf Performance, H.L. Miller, J. Berthelsen, B.A. Petitjean, R.H. Haigh

South Dakota Beef Report, 1986

Albendazole was utilized in drench and feed additive form to determine its effectiveness against parasite control, cow weight and conception rate and calf weaning weights. Fecal oocyte number was decreased by administration of Albendazole. Calf weaning weights from treated cows were heavier the first two years (14.5 lb for heifers and 10.5 lb for bulls) but decreased the third year (13 lb and 6 lb for heifers and bulls, respectively). Conception rates were similar between the two groups, with the only difference occurring the third year when control cows had a higher conception rate from the second AI than treated …

Effects Of Preconditioning On Pre- And Postshipment Performance And Health Of Feeder Steers, J.K. Swann, R.H. Pritchard, M.A. Robbins

South Dakota Beef Report, 1986

Four hundred steer calves were used to determine the effect of preconditioning on performance and health of calves fed either a high or low energy diet. In each of 2 years, 200 steer calves were selected from four western South Dakota ranches to participate in the study. Preconditioned (PC) calves were treated according to the South Dakota Beef Cattle Improvement Association and Cooperative Extension Service's guidelines for the "Green Tag" program. Preconditioning and implanting with zeranol produced a heavier calf at market time. No difference in weight loss during transit was noted between the PC and control treatments (CO), but …

Effect Of Dietary Energy Intake During Lactation On Performance Of Primiparous Sows And Their Litters, J. L. Nelssen, A. J. Lewis, E. R. Peo, J. D. Crenshaw

Department of Animal Science: Faculty Publications

A total of 146 primiparous sows was used in four replications of an experiment to investigate the effect of energy intake during a 28-d lactation on sow and litter performance. Dietary treatments consisted of three energy intakes; 10, 12 or 14 Mcal of metabolizable energy (ME)·sow^{– 1} ·d^–1. All sows were fed equal amounts of crude protein, vitamins and minerals daily, which met or exceeded standard recommendations. The experiment was initiated at parturition. Sow weight and backfat loss during lactation decreased linearly (P

Producing 20-Month Old Beef Steers Off Annual Pasture, K D. Greathead, D. J. Barker, W. J. Ryan

Journal of the Department of Agriculture, Western Australia, Series 4

A recent Mt Barker experiment compared two systems of fodder conservation with continuous grazing, using two types of steers, at three stocking rates. Year-round performance, carcass composition, and resulting costs and returns per hectare were assessed.

Production per hectare was greatest from crossbred steers at the intermediate stocking rate with either type of fodder conservation.

Profitability Of Finishing Cattle On Grain : Recent Research Results, W J. Ryan

Journal of the Department of Agriculture, Western Australia, Series 4

Some thoughts on how to finish beef cattle in time for the autumn-winter period.