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Articles 1081 - 1110 of 1392
Full-Text Articles in Animal Sciences
Urea, Corn Gluten Meal Or Soybean Meal As Supplemental Crude Protein Sources For Feedlot Steers Limit-Fed High Energy Growing Diets, J.J. Wagner, T.L. Mader
Urea, Corn Gluten Meal Or Soybean Meal As Supplemental Crude Protein Sources For Feedlot Steers Limit-Fed High Energy Growing Diets, J.J. Wagner, T.L. Mader
South Dakota Beef Report, 1987
Urea, corn gluten meal and soybean meal were compared as supplemental crude protein sources for growing steers fed limited amounts of a high energy diet. Interactions between level of urea and natural protein source were not significant, indicating that source of natural protein did not influence urea utilization. Level of urea and source of natural protein did not affect average daily gain. These data indicate that up to 1% of diet dry matter as urea can be effectively utilized by limit-fed cattle.
Limit-Fed, High Energy Diets For Growing Cattle, J.J. Wagner, T.L. Mader
Limit-Fed, High Energy Diets For Growing Cattle, J.J. Wagner, T.L. Mader
South Dakota Beef Report, 1987
Limit-fed, high energy (57 Mcal per cwt dry matter) diets were compared to full - fed, Low energy (46 Mcal per cwt dry matter) corn silage and alfalfa hay diets. Feed conversions were 5.68 and 5.78 lb of dry matter per lb of gain for the limit-fed silage and alfalfa diets vs 6.86 and 7.45 lb of dry matter per lb o f gain for the full - fed silage and alfalfa hay diets, respectively. Break-even roughage prices were calculated from feed efficiency and ration cost information. If corn is valued to the bunk at 31.50 per bushel and soybean …
Current Knowledge Concerning Silica Urinary Calculi, Royce J. Emerick
Current Knowledge Concerning Silica Urinary Calculi, Royce J. Emerick
South Dakota Beef Report, 1987
Laboratory research has shown phosphate to inhibit the formation of insoluble silica - protein complexes that are believed to be important in the formation of silica urinary calculi. In work with laboratory animals, increases in dietary phosphorus and urine acidifying salts reduced the incidence of silica urinary calculi. These findings translate into feeding and management practices that may be beneficial in reducing the incidence of silica urinary calculi in cattle and sheep.
Sdsu Purebred Beef Herds, R.J. Pruitt, R.M. Haigh
Sdsu Purebred Beef Herds, R.J. Pruitt, R.M. Haigh
South Dakota Beef Report, 1987
A herd of purebred Angus and Simmental cows is maintained near the SDSU campus that is used for teaching, research and extension activities. Cattle maintained at this unit are made available for introductory animal science, meats, animal breeding, reproductive physiology, beef production and livestock evaluation courses. Current reproductive physiology research under the direction of Dr. Herley Miller that involves this herd is reported in another paper in this publication. Besides use in the classroom, cattle are used for the annual SDSU Little International, field days and numerous 4-H, FFA and other educational events. In addition to providing research information and …
Interpreting Experimental Results, D.M. Marshall
Interpreting Experimental Results, D.M. Marshall
South Dakota Beef Report, 1987
No abstract provided.
Sdsu Dairy Digest, South Dakota State University Dairy Club
Sdsu Dairy Digest, South Dakota State University Dairy Club
Dairy Digest
No abstract provided.
1987 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University
1987 South Dakota Beef Report, Department Of Animal And Range Sciences, South Dakota State University, Agricultural Experiment Station, South Dakota State University, Cooperative Extension Service, South Dakota State University
South Dakota Beef Report, 1987
This is the complete 1987 South Dakota Beef Report.
Characterization Of The Muscles Within The Beef Forequarter, R.C. Johnson, C.M. Chen, T.S. Muller, W.J. Costello, J.R. Romans, K.W. Jones
Characterization Of The Muscles Within The Beef Forequarter, R.C. Johnson, C.M. Chen, T.S. Muller, W.J. Costello, J.R. Romans, K.W. Jones
South Dakota Beef Report, 1987
Thirty - four muscles/muscle groups, each greater than .1 kg, were dissected from 16 forequarters to establish a data base of individual muscle yields, palatability profiles and chemical composition. Carcass data from the 16 steers revealed the following averages: carcass weight - 288.4 kg, yield grade - 3.2, and quality grade – low choice. Individual muscle yields, tenderness profiles and chemical analyses indicated that the muscles within the forequarter are extremely variable. However, several of the larger muscles within the forequarter possess tenderness profiles comparable to the longissimus dorsi, the major muscle within rib steaks. This study suggests that maximum …
Chickpeas As A Protein And Energy Supplement For High Producing Dairy Cows, Darryl Lynn Hadsell
Chickpeas As A Protein And Energy Supplement For High Producing Dairy Cows, Darryl Lynn Hadsell
Electronic Theses and Dissertations
Thirty lactating Holstein cows were randomly assigned to one of three diets to evaluate chickpeas as a dietary supplement from wk 4 to 16 postpartum. Diets contained chickpeas at 0, 50, and 100 % of the concentrate dry matter in place of corn and soybean meal. Total mixed diets, fed individually, contained concentrate corn silage and alfalfa hay at 52, 32, and 16 % of the dry matter. Milk yield (34.5, 35.1, 35.7 kg/d) was higher for cows fed 100 % chickpeas than 0 % chickpeas. Fat (3.06, 3.09, 3.28 %) was highest for cows fed 100 % chickpeas. Milk …
Growth And Proteolytic Activity Of Selected Psychrotrophic Bacteria In Whole Milk And Whole Milk Retentate, Ravinder Reddy
Growth And Proteolytic Activity Of Selected Psychrotrophic Bacteria In Whole Milk And Whole Milk Retentate, Ravinder Reddy
Electronic Theses and Dissertations
In the last twenty years a number of membrane separation processes have evolved from laboratory scale, through pilot plant investigation, to full scale production units. One such process, ultrafiltration, has been found particularly useful in the dairy industry. Ultrafiltration uses porous polymeric membranes to separate molecules, principally on the basis of their molecular weight. In milk, fat, protein and associated substances are retained on the membrane. Permeate, which passes through the membrane contains mainly water, lactose and other low molecular weight substances. There is interest in ultrafiltration of milk because of it is potential importance in saving costs to both …
1986 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University
1986 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University
Little International "Little I" Agricultural Exposition Catalogs
No abstract provided.
South Dakota Custom Feeding Program, J.J. Wagner
South Dakota Custom Feeding Program, J.J. Wagner
South Dakota Beef Report, 1986
Seventy-five preconditioned steer calves representing 14 different owners and a variety of breeds were placed on feed at Longacre Farms. Wentworth. South Dakota. in late November and early December. Average days on feed for the 15 groups of five head was 191 (range 181-2071. Average daily gain was 2.6 lb head per day (range 2.26-2.83). Feed efficiency was 8.2 lb dry matter per pound of gain. Feed cost averaged $35.53 per cwt. gain and nonfeed cost averaged $11.84 per cwt. gain. Average cost of gain excluding interest was $47.37 per cwt. (range 43.16-53.741. Average loss was $85.00 per head (range …
Respiratory Viruses And Antibodies In Preconditioned South Dakota Feeder Calves, M.L. Vickers, R.H. Pritchard
Respiratory Viruses And Antibodies In Preconditioned South Dakota Feeder Calves, M.L. Vickers, R.H. Pritchard
South Dakota Beef Report, 1986
Nasal swabs and blood samples were taken from a t o t a l of 400 calves on a preconditioning evaluation program during 2 years. Fifty calves from each of four South Dakota ranches were divided into preconditioned (PC) and control (CO) groups and sampled both on the ranch and in the feedlot. The preconditioning program followed the recommendations of the South Dakota Beef Cattle Improvement Association and the Extension Service and included vaccination with live virus vaccines for infectious bovine rhinotracheitis (IBR), bovine viral diarrhea (BVD) and parainfluenza-3 virus (PI3). In both years, viruses were isolated from calves on …
Mechanical Treatment And Burning For High Quality Range Forage, F.R. Gartner, E.M. White, R.I. Butterfield
Mechanical Treatment And Burning For High Quality Range Forage, F.R. Gartner, E.M. White, R.I. Butterfield
South Dakota Beef Report, 1986
Annual yields of western wheatgrass and total vegetation were increased on a clayey range site following mechanical treatment. More important to the range manager, year t o year variability in forage production was reduced, since soil moisture is stabilized. Yields of Japanese brome, an annual grass, increased from the second through the fourth growing seasons after treatment. Three consecutive years of abundant fall precipitation beginning in 1980 probably triggered seed germination of this invader plant. Prescribed burning of the mechanical range treatments drastically reduced production of Japanese brome and increased forage quality. Both quantity and quality of western wheatgrass increased …
Pricklypear Cactus Control In Western South Dakota, J.R. Johnson, W.L. Tucker, C.E. Stymiest, E.J. Bowker
Pricklypear Cactus Control In Western South Dakota, J.R. Johnson, W.L. Tucker, C.E. Stymiest, E.J. Bowker
South Dakota Beef Report, 1986
In a range improvement study, both liquid and pelleted forms of Picloram were effective in controlling pricklypear cactus. Higher rates of chemical hastened control and gave more complete control. At lower rates, cactus was recovering in 1985, the fourth year of study, suggesting that higher rates may be most cost effective. In 1983 noncactus vegetation response was minor. In 1984, "all perennial grass" production increased by more than 50% (312 lb/A) at higher rates of Picloram. Shifts in "cool season" and “warm season" grass components were nonsignificant. In 1985, "cool season grass" was not generally affected by treatments, but "warm …
Effects Of Body Condition On Reproductive Performance Of Beef Cows, P.A. Momont, R.J. Pruitt
Effects Of Body Condition On Reproductive Performance Of Beef Cows, P.A. Momont, R.J. Pruitt
South Dakota Beef Report, 1986
Cows were fed differing nutritional levels before and after calving to create a wide range of cow body condition or fleshiness prior t o calving and at the beginning of the breeding season. Cows that were fleshier prior t o calving and when turned on pasture in early May (30 days prior t o the beginning of the breeding season) had a higher cycling rate in early May, June and July. Cows maintaining or increasing slightly in body condition (precalving to early May) tended to have a higher cycling rate during the breeding season than cows which lost body condition …
Effects Of Bull Exposure On Postpartum Intervals And Reproductive Performance In Beef Cows: A Progress Report, C.D. Naasz, H.L. Miller, B.A. Petijean, R.H. Haigh
Effects Of Bull Exposure On Postpartum Intervals And Reproductive Performance In Beef Cows: A Progress Report, C.D. Naasz, H.L. Miller, B.A. Petijean, R.H. Haigh
South Dakota Beef Report, 1986
The effects of bull exposure on time from calving until estrus, conception rates and calving interval were studied for mature beef cows. In the spring of I985 and 1986, cows were randomly allotted to one of two treatment groups. Cows were exposed to vasectomized bulls after calving until breeding or no bull exposure. Cows were heat detected twice daily and blood samples were collected weekly to determine progesterone levels. Heat detection data and progesterone levels indicated onset of estrous cycles occurred earlier in bull exposed cows than non-exposed cows. Conception rates to a timed insemination were not different between the …
Flow Cytometry Evaluation Of Testis And Sperm Cells And Growth Performance Of Bulls Implanted With Zeranol, B.E. Ballachey, H.L. Miller
Flow Cytometry Evaluation Of Testis And Sperm Cells And Growth Performance Of Bulls Implanted With Zeranol, B.E. Ballachey, H.L. Miller
South Dakota Beef Report, 1986
Effects of preweaning zeranol implants on reproductive function and growth performance were studied in 45 Simmental-Angus bulls. At slaughter, flow cytometry measurements were made on testicular and sperm cells to determine the effects of zeranol on spermatogenesis. There were no differences in weaning or slaughter weights due to implants. Nonimplanted bulls had larger scrota1 circumferences and heavier testicular weights than bulls given one or two implants. The testes of implanted bulls had a lower proportion of developing germ cells relative to nonimplanted bulls. The DNA in sperm from implanted bulls was structurally less stable (i.e., more susceptible to denaturation) than …
Evaluation Of Holstein Bull Sperm Quality By Flow Cytometry, B.E. Ballachey, L.K. Jost, D.P. Evenson
Evaluation Of Holstein Bull Sperm Quality By Flow Cytometry, B.E. Ballachey, L.K. Jost, D.P. Evenson
South Dakota Beef Report, 1986
Frozen semen samples from Holstein bulls were measured by the sperm chromatin structure assay (SCSA), a new procedure utilizing flow cytometry for the valuation of sperm quality. Fertility ratings of the bulls were known based on their use in artificial insemination matings. Values obtained by the SCSA were highly correlated (r= -.58 P<.01 with bull fertility ratings. Results of this research indicate the SCSA may be a valuable technique for measurement of sperm cell quality and detection of suboptimal fertility in bulls.
Performance Of Flank Spayed Rumen Autografted Heifers, David L. Whittington
Performance Of Flank Spayed Rumen Autografted Heifers, David L. Whittington
South Dakota Beef Report, 1986
Flank spaying of intact yearling heifers has been a routine procedure for ranchers for several years. Most recently a new technique called rumen autografting has created a lot of interest with ranchers. The technique involves implanting or grafting a small piece of ovarian tissue into the outside lining of the rumen wall. A trial was initiated on May 14, 1986, to compare summer grazing performance of intact flank spayed and rumen autografted heifers with and without a growth implant. The 231 crossbred heifers were randomly allotted to the trial and grazed together for 99 days as one herd. The results …
Effects Of Anabolic Implants On Reproductive Function, Carcass Characteristics And Performance In Postweaned Beef Bulls, S.J. Gordon, H.L. Miller, D.H. Gee, B.A. Petithean
Effects Of Anabolic Implants On Reproductive Function, Carcass Characteristics And Performance In Postweaned Beef Bulls, S.J. Gordon, H.L. Miller, D.H. Gee, B.A. Petithean
South Dakota Beef Report, 1986
Angus bulls averaging 620 lb were used to study the effects of implants on performance, carcass characteristics and reproductive parameters of intact males. Sixty-six bulls were randomly assigned to four treatments. These treatments were (1) nonimplanted, (2) implanted with 36 mg of Ralgro every 60 t o 70 days, (3) implanted with 220 mg of Synovex-S every 60 t o 70 days, (4) implanted with 24 mg of Compudose every 180 days. Body weights were taken a t the initiation of the trial and every 28 days. Blood samples were collected v i a jugular venipuncture weekly for 9 weeks …
Comparison Of Ralgro, Compudose And Synovex-C Implants On The Growth Performance Of Yearling Steers, D.L. Whittington
Comparison Of Ralgro, Compudose And Synovex-C Implants On The Growth Performance Of Yearling Steers, D.L. Whittington
South Dakota Beef Report, 1986
Growth response to a single implant was measured in yearling steers grazing native range on two ranches in South Dakota. The steers (724 head) were randomly allotted on each ranch to either a Ralgro, Compudose, Synovex-S or no implant treatment. Implants were administered according to manufacturers recommendations. The yearlings were weighed at the time of implanting in the spring and again 116 t o 148 days later. The ears of the steers receiving Compudose were palpated at the end of the trial to determine retention. The weight advantage of implanted steers over controls ranged from 12.1 t o 30.1 lb. …
Comparison Of Ralgro, Compudose And Synovex-C Implants On The Growth Performance Of Suckling Calves, D.L. Whittington
Comparison Of Ralgro, Compudose And Synovex-C Implants On The Growth Performance Of Suckling Calves, D.L. Whittington
South Dakota Beef Report, 1986
Growth response to a single implant was measured in suckling steer and heifer calves grazing native range on three ranches in South Dakota, The steers (628 head) were randomly allotted on each ranch to either a Ralgro, Compudose, Synovex-C or no implant treatment. The heifers (714 head) were randomly allotted on each ranch to either a Ralgro, Synovex-C or no implant treatment. Implants were administered according to manufacturers' recommendations. The calves were weighed at the time of implanting and again 163 days later at weaning. The ears of steers receiving a Compudose implant were palpated at weaning to determine retention. …
Effectiveness Of Albendazole Against Parasites And Cow And Calf Performance, H.L. Miller, J. Berthelsen, B.A. Petitjean, R.H. Haigh
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 …
Determination Of An Optimal Single Dose Of Famphur Administered Om Combination With Levamisole In A Paste Formulation For Grub Control In Beef Calves, H.L. Miller, R.L. Delay, R. Haigh
Determination Of An Optimal Single Dose Of Famphur Administered Om Combination With Levamisole In A Paste Formulation For Grub Control In Beef Calves, H.L. Miller, R.L. Delay, R. Haigh
South Dakota Beef Report, 1986
Eighty-nine bull and heifer crossbred beef calves were utilized in five treatments t o determine the effect of famphur administered as a paste for grub control. The five treatments were (1) experimental paste-0% famphur or control (A), (2) experimental paste-14.4% famphur (B), (3) experimental paste-21.6X famphur (C), (4) experimental paste-28.8% famphur (Dl and (5) Warbex famphur pour-on plus tramisol levamisole gel (El. In all treatments in which famphur was administered (B, C, D and E) effective control of grubs was accomplished. Weight gains were 355, 360, 384, 355 and 356 lb for bulls in groups A, B, C. D and …
The Status Of Horn Fly Resistance In South Dakota, Emmert R. Easton
The Status Of Horn Fly Resistance In South Dakota, Emmert R. Easton
South Dakota Beef Report, 1986
Ear tags containing the organophosphate insecticide chlorpyrifos have been effective in the control of resistant horn flies in three western South Dakota localities during 1986. Resistance levels of 50-fold to pyrethroid insecticide were detected in horn fly populations at Cottonwood, Colome and Sturgis.
The Release Of Insects Sterilized By Colbalt 60 To Control A Wild Population Of Stable Flies At The Sdsu Beef Cattle And Sheep Nutrition Unit In Brookings, Emmert R. Easton, Michael A. Catangui
The Release Of Insects Sterilized By Colbalt 60 To Control A Wild Population Of Stable Flies At The Sdsu Beef Cattle And Sheep Nutrition Unit In Brookings, Emmert R. Easton, Michael A. Catangui
South Dakota Beef Report, 1986
Sterile stable flies were released weekly a t the SDSU Beef Cattle and Sheep Nutrition Unit at Brookings from July 24 through September during the summer 1986 season t o eliminate wild populations of insects. Flies that were sterilized were marked with a dye so when recaptured by an insect net or a sticky trap they could be differentiated from wild, normal or fertile flies. A trend toward reduced f l y numbers was observed 3 weeks following the first release. A 1:5 ratio of sterile to wild flies was achieved in 6 weeks.
The Fly Buster. A Combination Mineral Feeder/Spray Device For The Control Of The Horn Fly And The Face Fly On Pastured Cattle, Emmert R. Easton
The Fly Buster. A Combination Mineral Feeder/Spray Device For The Control Of The Horn Fly And The Face Fly On Pastured Cattle, Emmert R. Easton
South Dakota Beef Report, 1986
A combination mineral feeder/spray device was evaluated as a different approach for the suppression of horn and face flies under range conditions in east central South Dakota during the 1985 season. Ravap, Ectrin and Ciovap were applied at the rates of 1.25. .05 and 1.0%, respectively, to Black Angus cattle in three separate pastures with the spray device containing Morton's Farm and Ranch T-M and salt containing iodine and other trace minerals. Cattle in a fourth pasture that were not treated were used as the control. A canister containing Freon 12 acts as a propellant to force the insecticide under …
Effects Of Preconditioning On Pre- And Postshipment Performance And Health Of Feeder Steers, J.K. Swann, R.H. Pritchard, M.A. Robbins
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 …
National Beef Cattle Genetic Evaluation, D.M. Marshall
National Beef Cattle Genetic Evaluation, D.M. Marshall
South Dakota Beef Report, 1986
Use of artificial insemination permits some bulls to have offspring evaluated in more than one herd. Such bulls serve as benchmarks for comparison or links between herds. For some breeds, sufficient links exist between herds that current technology may provide valid genetic comparisons between cattle from different herds, as well as within-herd comparisons. The current industry standard expression for reporting relative genetic merit of beef cattle in national evaluations is expected progeny difference (EPD). The EPD for a sire represents the expected difference in performance of a sire’s offspring when compared t o the average offspring performance of all sires …