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Articles 1 - 29 of 29
Full-Text Articles in Life Sciences
Evaluation Of Growth Performance, Energy Utilization, And Carcass Trait Responses Of Finishing Lambs Administered Zeranol, Emily Nold
Schultz-Werth Award Papers
The objective of this research was to determine the influence of implanting heavy wether lambs with 12 mg zeranol (1 pellet Ralgro, Merck Animal Health. Madison, NJ) 59 d before harvest. Average daily gain (ADG), feed efficiency, and carcass merit were evaluated. Polpypay and crossbred wethers (n = 32 total) were equally divided into two treatment groups within a randomized complete block design. Sixteen pens were used resulting in 8 replicate pens per treatment. Wethers were fed a finishing diet consisting of cracked corn, soybean meal and soybean hulls ad libitum for 59 d. Lambs had access to clean water …
Alternative Treatment Options For Controlling Anthelmintic-Resistant Haemonchus Contortus Populations In South Dakota Sheep Herds, Adam Sarah
Electronic Theses and Dissertations
Haemonchus contortus is a common economically important gastrointestinal nematode that obliges the survival and productivity of small ruminants, especially sheep and goats. Anthelmintic resistance is a primary challenge in ruminant health management programs in preventing and controlling the H. contortus populations; therefore, there is a great necessity in finding and developing natural plant products for use as alternatives to commercial anthelmintics for controlling H. contortus in pastured sheep and goats. This dissertation has three major aims conducted in three separate studies: the first in vivo one was to evaluate the extended effect of a springtime, combined-treatment with 3 anthelmintics having …
Effect Of Pre-Marketing Management Practices On Shrink Loss In Lambs, Ann Kolthoff
Effect Of Pre-Marketing Management Practices On Shrink Loss In Lambs, Ann Kolthoff
Electronic Theses and Dissertations
Two experiments were conducted to evaluate the effects of three common lamb pre-marketing management practices on live weight shrink loss. Additionally a producer survey was conducted to assess current marketing practices in the North Central region of the US. In these experiments, Exp. 1 (feeder lambs) and 2 (finished lambs), 60 commercial Polypay lambs (Exp. 1: 37.65 ± 0.30 kg of BW; Exp. 2: 52.56 ± 0.14 kg of BW) were allocated for each experiment to 3 treatment groups (n=20 lambs) in a 3 x 3 Latin square design. Treatments were the pre-marketing practices: original pen (ORG), transition pen (TRANS), …
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 3), J.E. Held, A. Kolthoff, K. Bruns
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 3), J.E. Held, A. Kolthoff, K. Bruns
South Dakota State University Sheep Research Report, 2014
To demonstrate the use of the EAZI-BREED CIDR in ewe reproductive management 6 d, 9 d, or 12 d insertion of the EAZI-BREED CIDR on seasonally anestrous ewes in the Upper Midwest.
Effects Of Increasing The Energy Density Of A Lactating Ewe Diet By Replacing Hay With Soyhulls (Sh) And Dried Distillers Grains With Solubles (Ddgs), R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
Effects Of Increasing The Energy Density Of A Lactating Ewe Diet By Replacing Hay With Soyhulls (Sh) And Dried Distillers Grains With Solubles (Ddgs), R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
South Dakota State University Sheep Research Report, 2014
Objectives: To evaluate the effects of increasing the ewe’s dietary energy by replacing hay with SH and DDGS on milk production, nutrient composition, lamb growth, and changes in ewe body weight and body condition score (BCS).
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 3), J.E. Held, A. Kolthoff, K. Bruns
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 3), J.E. Held, A. Kolthoff, K. Bruns
South Dakota State University Sheep Research Report, 2014
To demonstrate the use of the EAZI-BREED CIDR in ewe reproductive management 6 d, 9 d, or 12 d insertion of the EAZI-BREED CIDR on seasonally anestrous ewes in the Upper Midwest.
A Comparison Of Corn Or Soybean Hull Based Diets With Dried Distillers Grain With Solubles (Ddgs) As The Protein Source In Finishing Diets Comparing Lamb Growth, Feed Efficiency, And Carcass Merit, R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
A Comparison Of Corn Or Soybean Hull Based Diets With Dried Distillers Grain With Solubles (Ddgs) As The Protein Source In Finishing Diets Comparing Lamb Growth, Feed Efficiency, And Carcass Merit, R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
South Dakota State University Sheep Research Report, 2014
Objectives: To evaluate growth, carcass merit and mineral status in wether lambs fed finishing diets formulated with dried distillers grain with solubles (DDGS) and soybean hulls (SH).
Effect Of Vitamin E Supplementation On Reproductive Performance In Spring Mated Ewes, J.E. Held, R. Zelinsky, K. Bruns, C. Wright
Effect Of Vitamin E Supplementation On Reproductive Performance In Spring Mated Ewes, J.E. Held, R. Zelinsky, K. Bruns, C. Wright
South Dakota State University Sheep Research Report, 2014
Objectives: To evaluate reproductive performance in commercial Polypay ewes fed supplemental vitamin E at the level recommended in the sheep NRC (1985) compared to the small ruminant NRC (2007) during spring mating.
Effects Of Glycerol And Sire Breed On Growth And Carcass Traits Of Finishing Wether Lambs, R.M. Beck, A.E. Wertz-Lutz, C.L. Wright, J.E. Held
Effects Of Glycerol And Sire Breed On Growth And Carcass Traits Of Finishing Wether Lambs, R.M. Beck, A.E. Wertz-Lutz, C.L. Wright, J.E. Held
South Dakota State University Sheep Research Report, 2014
Objectives: To evaluate crude glycerin as an energy source for finishing lambs and to determine the effect of sire breed on finishing lamb growth performance and carcass characteristics. In light of previous research, the hypothesis for this experiment was that glycerol would have an energy value similar to that of corn when fed in high concentrate diets to finishing lambs.
Effect Of Level Of Soyhulls On Finishing Lamb Growth Efficiency And Carcass Merit, J.E. Held, R.D. Zelinsky, R. Beck, K. Bruns
Effect Of Level Of Soyhulls On Finishing Lamb Growth Efficiency And Carcass Merit, J.E. Held, R.D. Zelinsky, R. Beck, K. Bruns
South Dakota State University Sheep Research Report, 2014
Objectives: To determine the effects of soyhull (SH) based diets on finishing lamb growth performance, feed efficiency and carcass merit.
2014 South Dakota State University Sheep Research Report, Animal Science Department
2014 South Dakota State University Sheep Research Report, Animal Science Department
South Dakota State University Sheep Research Report, 2014
This is the complete document containing all reports.
Effects Of Increasing Dietary Energy Density By Replacing Hay With Soyhulls (Sh) And Dried Distillers Grains With Solubles (Ddgs) On Nutrient Digestibility And Rumen Physiology, R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
Effects Of Increasing Dietary Energy Density By Replacing Hay With Soyhulls (Sh) And Dried Distillers Grains With Solubles (Ddgs) On Nutrient Digestibility And Rumen Physiology, R.D. Zelinsky, A.E. Wertz-Lutz, J.E. Held
South Dakota State University Sheep Research Report, 2014
Objectives: To determine the effects of increasing dietary energy density in lamb diets from soybean hulls (SH) and dried distillers grain with solubles (DDGS) on nutrient digestibility and rumen physiology.
Dry Matter Intake, Feed Efficiency And Animal Growth Response To Treated Corn Stover Inclusion In Lamb Finishing Diets, P.L. Reading, A. Kolthoff, J.E. Held, K. Bruns
Dry Matter Intake, Feed Efficiency And Animal Growth Response To Treated Corn Stover Inclusion In Lamb Finishing Diets, P.L. Reading, A. Kolthoff, J.E. Held, K. Bruns
South Dakota State University Sheep Research Report, 2014
To evaluate the effect of varying levels of treated corn stover on the dry matter intake and growth performance of growing lambs.
Effect Of Sorting And Feeding Management Practices On Finished Lamb Shrink Loss, K. Manthei, J.E. Held, A. Kolthoff, K. Bruns
Effect Of Sorting And Feeding Management Practices On Finished Lamb Shrink Loss, K. Manthei, J.E. Held, A. Kolthoff, K. Bruns
South Dakota State University Sheep Research Report, 2014
To determine the effect of common pre-marketing sorting and feeding management practices on finished lamb shrink loss.
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 1), J.E. Held, R.D. Zelinsky, K. Bruns, A. Kolthoff
Effect Of Eazi-Breed Cidr On Reproductive Efficiency In Seasonally Anestrous Mated Ewes (Year 1), J.E. Held, R.D. Zelinsky, K. Bruns, A. Kolthoff
South Dakota State University Sheep Research Report, 2014
To demonstrate the use of the EAZI-BREED CIDR in ewe reproductive management, and evaluate the effect of EAZI-BREED CIDR insertion period of 6 or 12 d on reproductive efficiency in seasonally anestrous ewes in the Upper Midwest.
Presence Of Mycoplasma Sp. In Lambs With Lung Lesions, J.A. Daniel, J.E. Held, L. Holler
Presence Of Mycoplasma Sp. In Lambs With Lung Lesions, J.A. Daniel, J.E. Held, L. Holler
South Dakota State University Sheep Research Report, 2014
Objectives: To test the impact of NPCoat administration on the prevalence of lung lesions in lambs.
Disease And Predation: Sorting Out Causes Of A Bighorn Sheep (Ovis Canadensis) Decline, Joshua B. Smith, Jonathan A. Jenks, Troy Grovenburg, Robert W. Klaver
Disease And Predation: Sorting Out Causes Of A Bighorn Sheep (Ovis Canadensis) Decline, Joshua B. Smith, Jonathan A. Jenks, Troy Grovenburg, Robert W. Klaver
Natural Resource Management Faculty Publications
Estimating survival and documenting causes and timing of mortality events in neonate bighorn sheep (Ovis canadensis) improves understanding of population ecology and factors influencing recruitment. During 2010–2012, we captured and radiocollared 74 neonates in the Black Hills, South Dakota, of which 95% (70) died before 52 weeks of age. Pneumonia (36%) was the leading cause of mortality followed by predation (30%). We used known fate analysis in Program MARK to estimate weekly survival rates and investigate the influence of intrinsic variables on 52-week survival. Model {S1 wk, 2–8 wks, .8 wks} had the lowest AICc (Akaike’s Information Criterion corrected for …
Evaluating Glycerin Supplementation On Reproductive Performance Of Sheep, J.A. Walker, G.A. Perry, R. Salverson, P. Nester, C. Schauer, J. Held, K. Olson
Evaluating Glycerin Supplementation On Reproductive Performance Of Sheep, J.A. Walker, G.A. Perry, R. Salverson, P. Nester, C. Schauer, J. Held, K. Olson
Animal Science Faculty Publications
This 3-year study evaluated the effect ofglycerin supplementation on ewe reproductive efficiency,blood glucose and insulin concentrations. Mature Polypayand Rambouillet ewes (n = 225) were orally dosed withglycerin following estrus synchronization at rates of 0, 50,100, 200 or 300 g/hd. In year 3 an additional 16 ewes weresupplemented (SUP) with 0.57 kg of range cake for 21 daysprior to breeding. Blood samples were collected (n = 25ewes) for 10 hours post drenching. Blood was analyzed forinsulin and glucose concentrations. Ewes were exposed torams for 35 days. Pregnancy was determined byultrasonography evaluation. Number of lambs born per eweexposed was not different (P …
Effects Of Increasing The Energy Density Of A Lactating Ewe Diet By Replacing Grass Hay With Soybean Hulls And Dried Distillers Grains With Solubles, Aimee Wertz-Lutz, Robert Zelinsky, Jeffrey Held
Effects Of Increasing The Energy Density Of A Lactating Ewe Diet By Replacing Grass Hay With Soybean Hulls And Dried Distillers Grains With Solubles, Aimee Wertz-Lutz, Robert Zelinsky, Jeffrey Held
South Dakota Sheep Research Reports, 2006-07
The objective of this experiment was to determine the effects of increasing the energy density of a lactating ewe diet by replacing grass hay (GH) with soybean hulls (SH) and replacing soybean meal (SBM) with dried distillers grains with solubles (DDGS) on ewe body condition, milk production and nutrient composition, and lamb performance. Sixteen 2-year-old ewes were selected based on a common lambing date. All diets contained 60% roughage and 40% concentrate. Dietary roughage source, however varied from completely GH to completely SH, and SBM was replaced by DDGS. Diets were formulated to contain 13.9% CP and an increasing amount …
Effects Of Increasing The Dietary Energy Density By Replacing Grass Hay With Soybean Hulls And Dried Distillers Grains With Solubles On Nutrient Digestibility And Rumen Fermentation, Aimee Wertz-Lutz, Robert Zelinsky, Jeffrey Held
Effects Of Increasing The Dietary Energy Density By Replacing Grass Hay With Soybean Hulls And Dried Distillers Grains With Solubles On Nutrient Digestibility And Rumen Fermentation, Aimee Wertz-Lutz, Robert Zelinsky, Jeffrey Held
South Dakota Sheep Research Reports, 2006-07
We hypothesize that soybean hulls (SH) and dried distillers grains with solubles (DDGS) can be used in lamb diets to increase dietary energy density compared with a traditional grass hay (GH) and soybean meal (SBM) diet without causing adverse effects on nutrient digestibility and rumen function. To test this hypothesis, four ruminally-cannulated wethers were used in a 4x4 Latin square design to determine the effects of replacing GH with SH and replacing SBM with DDGS on nutrient digestibility and rumen fermentation. All diets were formulated to contain 60% roughage and 40% concentrate on DM basis. Dietary roughage source, however, varied …
Shearing Lambs Improves Growth Performance During Periods With Elevated Thermal Load, Jake J. Herrig, Simone M. Holt, J.A. Daniel
Shearing Lambs Improves Growth Performance During Periods With Elevated Thermal Load, Jake J. Herrig, Simone M. Holt, J.A. Daniel
South Dakota Sheep Research Reports, 2006-07
The purpose of this study was to determine if average daily gain (ADG) is improved in shorn lambs versus non-shorn lambs in the summer months in the upper Midwestern United States. Forty-nine purebred Hampshire and Columbia ram (n = 10 Hampshire and 4 Columbia) and ewe (n = 22 Hampshire and 13 Columbia) lambs were grouped by breed, sex, age (104 ± 1.7 days of age), and initial weight (109 ± 3.5 lbs) into shorn (n=26) and non-shorn (n=23) groups. After shearing (3 June 2004), shorn sheep had approximately 0.1 inches of wool-cover. Lambs were weighed 1, 29, and 57 …
The Effect Of Corn Or Soybean Hull Diets Supplemented With Dried Distillers Grain With Solubles (Ddgs) On Finishing Lamb Performance And Carcass Merit, Rob Zelinsky, Jay A. Daniel, Jeff E. Held
The Effect Of Corn Or Soybean Hull Diets Supplemented With Dried Distillers Grain With Solubles (Ddgs) On Finishing Lamb Performance And Carcass Merit, Rob Zelinsky, Jay A. Daniel, Jeff E. Held
South Dakota Sheep Research Reports, 2006-07
Eighty 78.1 ± 1.6 lb white-faced and brockle-faced wether and ewe lambs were used in an experiment to test the effects of soybean hulls and dried distillers grains with solubles (DDGS) on growth, feed efficiency and carcass merit. Lambs were placed on test between 79 to 105 days of age (average 92 days) and fed the experimental diets for 60 days. Each pen consisted of 10 lambs. Diets were formulated to meet or exceed NRC requirements. The diets were corn or soybean hull based and DDGS served as the protein supplement in both diets. No treatment differences were observed in …
Testing Intervention Strategies To Reduce The Prevalence Of Lung Lesions In Lambs, Jay A. Daniel, Jeff E. Held
Testing Intervention Strategies To Reduce The Prevalence Of Lung Lesions In Lambs, Jay A. Daniel, Jeff E. Held
South Dakota Sheep Research Reports, 2006-07
We have previously demonstrated that lung lesions decrease average daily gain in lambs. We have also observed fall born lambs have a lower prevalence of lung lesions than spring born lambs. The different prevalence in lung lesions between spring and fall born lambs suggests that lung lesions can be prevented. Mannheimia (Pasteurella) haemolytica and/or Pasteurella multocida are present in lambs with moderate or severe lung lesions, but not in lambs with normal lung tissue. In serial slaughter studies, we observed lung lesions formed post-weaning. Therefore, we designed two studies to test possible intervention strategies to reduce the prevalence or severity …
Studies On Beneficial And Adverse Effects Of Dietary Buffers For Lambs, Jong Kyu Ha
Studies On Beneficial And Adverse Effects Of Dietary Buffers For Lambs, Jong Kyu Ha
Electronic Theses and Dissertations
Experiments using lambs were conducted to study the effects of buffers or roughages against acidosis occurring during rapid dietary changes. Experiments using rats were conducted to investigate vitamin A and thiamin stability and/or utilization as influenced by bentonite. Incubating rumen fluid in vitro at a pH lower than 6 reduced volatile fatty acid (VFA) production and increased lactate accumulation. Limestone or bentonite at levels of 2% in 92% concentrate diets had little effect on feed intake or rumen and blood parameters during a 7-day treatment period using rumen-canulated sheep. However, 2% NaHCO3 increased rumen pH and feed intake on …
Flumethasone Induction Of Parturition In The Ewe, Donald H. Rommereim
Flumethasone Induction Of Parturition In The Ewe, Donald H. Rommereim
Electronic Theses and Dissertations
The idea of controlling the time of parturition in domestic mammals has arisen in the last 15 years from the development of techniques of estrous synchronization and from studies achieved on the mechanism of birth. Controlling the time of parturition is a management technique by which a producer might reduce livestock losses at birth and/or cut production costs. Birth for the new-born, or parturition for the mother is a critical time. Controlling the time of parturition allows the producer to exercise a constrained supervision at this critical time, and therefore limit possible losses. Being present at birth allows the producer: …
Pregnancy Diagnosis In The Ewe, Michael J. Trapp
Pregnancy Diagnosis In The Ewe, Michael J. Trapp
Electronic Theses and Dissertations
The ability to diagnose pregnancy accurately, rapidly and economically before the last six weeks of gestation in the ewe could be of real value as a sheep management tool. An efficient non-surgical pregnancy test could enable the producer to reduce feed costs, increase percent lamb crop and select for fertility. It is important to the health of the ewe and to the survival of the lamb that highly productive animals should be adequately fed. About 75% of the fetus' growth occurs during the last trimester of pregnancy. Therefore undernutrition of the ewe during this part of pregnancy leads to the …
A Comparison Between Crossbred And Straightbred Production Of Targhee Range Ewes, James M. Pajl
A Comparison Between Crossbred And Straightbred Production Of Targhee Range Ewes, James M. Pajl
Electronic Theses and Dissertations
This investigation was initiated. to determine the effect of crossbred vs. straightbred production under the environmental conditions found at the Antelope Range Research Station, Buffalo, South Dakota.
Induction Of Parturition In The Ovine, Ernest L. Harman
Induction Of Parturition In The Ovine, Ernest L. Harman
Electronic Theses and Dissertations
The effects of flumethasone and prostaglandin F2 (PGF) on the time of parturition were studied in the ewe. Pregnant ewes with known conception dates were allotted into a 3 x 3 x 2 factorial designed experiment (1973 study) and into a completely random designed experiment (1974 study). In the 1973 study treatments consisted of three hormones (flumethasone, PGF and saline control), three levels (low, .5 mg flumethasone, 5 mg PGF, 1 cc saline; medium, 1.0 mg flumethasone, 10 mg PGF, 2 cc saline; high, 1.5 mg flumethasone, 15 mg PGF, 3 cc saline) and two routes of administration (IM …
The Apparent Digestibility By Sheep Of Prairie Hay Harvested At Three Stages Of Maturity, Robert Manseau Jordan
The Apparent Digestibility By Sheep Of Prairie Hay Harvested At Three Stages Of Maturity, Robert Manseau Jordan
Electronic Theses and Dissertations
Grass is the greatest asset of the Northern Great Plains. Grass does and must serve as the basic feed for the flocks and herds of this area. Without grass, much of the Northern Great Plains would be waste land with little or no value. In the states of North and South Dakota, Nebraska, Colorado, Wyoming, and Montana, about 67 per cent of the total land is in pasture and hay. Seventy five to 95 per cent of the total feed needed by cattle and sheep in the Northern Plains states is furnished by pasture and roughage. With an ever-increasing demand …