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Animal Sciences

Kansas State University Libraries

Kansas Agricultural Experiment Station Research Reports

2000

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Articles 31 - 60 of 100

Full-Text Articles in Life Sciences

Salmonella Dublin: A Threat To Dairy Heifer Survival And Future Performance (2000), D.G. Schmidt, D.P. Gnad, J.M. Sargeant, John E. Shirley Jan 2000

Salmonella Dublin: A Threat To Dairy Heifer Survival And Future Performance (2000), D.G. Schmidt, D.P. Gnad, J.M. Sargeant, John E. Shirley

Kansas Agricultural Experiment Station Research Reports

Salmonella dublin is a bacterium that can have devastating effects in dairy herds. It is most deadly with calves that range in age from 10 days to 5 months. Salmonella dublin is shed from carrier animals through feces, milk, and colostrum and spread by oral ingestion. Clinical signs are not detected easily until after the infection is well established. Calves may suffer from septicemia, diarrhea, fatigue, and unthriftiness. Death is not an uncommon outcome of this disease. Clinical signs of infection in adults may range from none to enteritis or abortion. Combating the disease requires an awareness of the disease, …

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Total Blood Protein As An Indicator Of Colostral Sufficiency And Morbidity In Dairy Calves (2000), D.G. Schmidt, D.P. Gnad, J.M. Sargeant, John E. Shirley Jan 2000

Total Blood Protein As An Indicator Of Colostral Sufficiency And Morbidity In Dairy Calves (2000), D.G. Schmidt, D.P. Gnad, J.M. Sargeant, John E. Shirley

Kansas Agricultural Experiment Station Research Reports

Total blood protein measured in calves between 1 and 7 days of age is a good indicator of the sufficiency of colostral intake and level of immunity passed to the calf. This measurement can be used to improve calf management strategies and thereby calf performance. Total blood protein concentrations are associated with immunoglobulin absorption in the neonatal calf, which can impact calf morbidity and mortality. Blood protein>5.5 g/dl indicates sufficient immunoglobulin absorption, and blood protein <5.0 g/dl indicates insufficient absorption. Insufficient immunoglobulin absorption increases the risk of calf morbidity and mortality. The dry cow health program, proper collection, and management of colostrum help ensure that quality colostrum is available for the newborn calf. Proper colostrum administration and low-stress calf management also ensure maximal immunoglobulin absorption. Timing of colostral intake affects total blood protein concentrations. The calf's ability to absorb immunoglobulins is reduced significantly 12 hr after birth. Therefore, it is critical to administer colostrum during the first few hours of life. Total blood protein can be used to determine if the calf has absorbed sufficient immunoglobulins from the colostrum.; Dairy Day, 2000, Kansas State University, Manhattan, KS, 2000;

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Antibiotic Versus Nonantibiotic Products For The Treatment Of Papillomatous Digital Dermatitis (Hairy Heel Wart) In Dairy Cattle (2000), J.M. Sargeant, D.P. Gnad, J. Isch, H. Bathina Jan 2000

Antibiotic Versus Nonantibiotic Products For The Treatment Of Papillomatous Digital Dermatitis (Hairy Heel Wart) In Dairy Cattle (2000), J.M. Sargeant, D.P. Gnad, J. Isch, H. Bathina

Kansas Agricultural Experiment Station Research Reports

A field trial was conducted to compare oxytetracycline to three nonantibiotic therapies using bandage protocols for the treatment of hairy heel warts. Affected feet were bandaged for 4 days with either of the four products. Over a 28-day period following bandage removal, heel warts on 44 cows (11 per treatment group) were evaluated based on size, degree of pain, color, and lesion appearance. No differences were detected among treatments, suggesting that nonantibiotic therapies used in bandage protocols may be as effective as oxytetracycline.; Dairy Day, 2000, Kansas State University, Manhattan, KS, 2000;

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Economics Of Cooling Cows To Reduce Seasonal Variation In Peak Milk Production (2000), Kevin C. Dhuyvetter Jan 2000

Economics Of Cooling Cows To Reduce Seasonal Variation In Peak Milk Production (2000), Kevin C. Dhuyvetter

Kansas Agricultural Experiment Station Research Reports

The economic impact of cooling cows to reduce the seasonal variation in peak milk production was estimated using researchbased lactation curves and peak production numbers for a commercial dairy operation in Kansas. Reducing the seasonal drop in peak production that occurs in the late summer and fall months by 29% or more is profitable for second or higher lactation cows. This reduction represents an increase in total milk production over the entire lactation of slightly over 1% and an increase in the average annual peak production of only 1 lb. This indicates that achieving at least the breakeven level for …

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Monensin: An Overview Of Its Application In Lactating Dairy Cow Diets (2000), J.M. Defrain, John E. Shirley Jan 2000

Monensin: An Overview Of Its Application In Lactating Dairy Cow Diets (2000), J.M. Defrain, John E. Shirley

Kansas Agricultural Experiment Station Research Reports

The efficiency of feedstuff utilization by ruminal microorganisms and the cow's genetic ability to convert feed nutrients into milk and milk components are major factors that influence the profitability of a dairy herd. Monensin's ability to modify the movement of ions across biological membranes leads to alterations in bacterial populations and subsequent changes in the proportion of volatile fatty acids produced during ruminal fermentation. Manipulating ruminal microbial populations with ionophores has the potential to improve performance by reducing ketosis, acidosis, and bloat and increasing digestive efficiency. Monensin improves fiber digestion by preventing suboptimal ruminal pH, enhances amino acid use by …

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Effect Of Level Of Surface-Spoiled Silage On Teh Nutritive Value Of Corn Silage-Based Rations, L.A. Whitlock, M.K. Siefers, Ronald V. Pope, B.E. Brent Jan 2000

Effect Of Level Of Surface-Spoiled Silage On Teh Nutritive Value Of Corn Silage-Based Rations, L.A. Whitlock, M.K. Siefers, Ronald V. Pope, B.E. Brent

Kansas Agricultural Experiment Station Research Reports

Twelve ruminally cannulated crossbred steers were used to determine the effect of level of surface spoilage in corn silage-based rations on dry matter (DM) intake and nutrient digestibilities. Irrigated corn was harvested at the 80% milkline stage of maturity and ensiled in pilot-scale bunker silos, which were 3 ft in depth, and a 9-ft-diameter AgBag®. After 90 days, the bunkers were sealed with a single sheet of polyethylene, and this silage was designated "spoiled". The silage in the AgBag was designated "normal". The four rations contained 90% silage and 10% supplement (DM basis), and the proportions of silage in the …

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Intake And Performance Of Dairy Cows Fed Wet Corn Gluten Feed During The Periparturient Period (2000), A.F. Park, J.M. Defrain, M. J. Meyer, Evan C. Titgemeyer Jan 2000

Intake And Performance Of Dairy Cows Fed Wet Corn Gluten Feed During The Periparturient Period (2000), A.F. Park, J.M. Defrain, M. J. Meyer, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Eight primiparous and nine multiparous Holstein cows were used in a randomized block design to determine the effect of wet corn gluten feed in the diet during the last 21 days of gestation on dry matter intake and early postpartum performance. Multilactation cows fed wet corn gluten feed maintained a higher dry matter intake and intake as a percentage of body weight during the last week before calving than cows fed the control diet. First-lactation cows fed wet corn gluten feed consumed less dry matter, both total and as a percentage of body weight, across calving than first-lactation cows fed …

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Relationship Among Concentrations Of Milk Urea Nitrogen And Plasma Urea Nitrogen And Feeding Time (2000), E.E. Ferdinand, M. J. Meyer, A.F. Park, M. J. Vanbaale Jan 2000

Relationship Among Concentrations Of Milk Urea Nitrogen And Plasma Urea Nitrogen And Feeding Time (2000), E.E. Ferdinand, M. J. Meyer, A.F. Park, M. J. Vanbaale

Kansas Agricultural Experiment Station Research Reports

Eight Holstein cows were used to determine the relationship among milk urea nitrogen (MUN), plasma urea nitrogen (PUN), and feeding time. We first established that MUN concentrations were similar in concentration among quarters by comparing milk samples from each quarter just before milking. In order to determine if collecting a sample of milk from a quarter influenced the MUN in samples taken later, samples were obtained from the right front quarter (RF) at 2, 4, 6, and 8 hr after the AM milking and from the left front quarter (LF), right rear (RR), and left rear (LR) at 4, 6, …

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Keeping Cows Cool (2000), John F. Smith, Joseph P. Harner, Michael J. Brouk Jan 2000

Keeping Cows Cool (2000), John F. Smith, Joseph P. Harner, Michael J. Brouk

Kansas Agricultural Experiment Station Research Reports

Heat stress occurs when a dairy cow's internal heat load is greater than her capacity to lose unwanted heat to the environment. Effects of heat stress include: increased respiration rate, increased water intake, increased sweating, decreased dry matter intake, slower rate of feed passage, decreased blood flow to internal organs, decreased milk production, and poor reproductive performance. Lower milk production and reproductive performance cause economic losses to dairy producers. The ordered priorities for reducing heat are: increasing water availability; providing shade in the housing areas (both dry and lactating cows) and holding pen; reducing walking distance to the parlor; reducing …

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Factors Affecting Dry Matter Intake By Lactating Dairy Cows (2000), John F. Smith, Michael J. Brouk Jan 2000

Factors Affecting Dry Matter Intake By Lactating Dairy Cows (2000), John F. Smith, Michael J. Brouk

Kansas Agricultural Experiment Station Research Reports

Feed intake is the single most critical factor of dairy production, and performance of dairy cattle can be enhanced or hindered by environmental factors that affect it. These environmental factors can by divided into physical and climatic conditions. On modern dairies, the physical factors may be of more concern. Modern facilities provide the cow with protection from the natural elements. However, these same facilities can enhance or hinder dry matter intake. Facilities should provide adequate access to feed and water, a comfortable resting area, and adequate protection from the natural elements. Critical areas of facility design related to feed intake …

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Anestrus In Lactating Dairy Cows Before Ovulation Synchronization (2000), J.A. Cartmill, S.E. Zarkouny, Hensley, Jeffrey S. Stevenson Jan 2000

Anestrus In Lactating Dairy Cows Before Ovulation Synchronization (2000), J.A. Cartmill, S.E. Zarkouny, Hensley, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

The incidence of anestrus in dairy cattle prior to first inseminations carried out after a minimum of 60 days postpartum ranged from 4 to 58% in first-lactation cows and 14 to 50% in older cows. Dairy cows with more days in milk, older than 2 years, and in better body condition (probably reflective of greater postpartum dry matter intakes) were more likely to cycle than thinner cows. Cows that were not cycling before the first week of insemination conceived at lower rates and took longer to become pregnant.; Dairy Day, 2000, Kansas State University, Manhattan, KS, 2000;

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Embryo Survival In Lactating Dairy Cows (2000), J.A. Carmill, S.E. Zarkouny, B.A. Hensley, Jeffrey S. Stevenson Jan 2000

Embryo Survival In Lactating Dairy Cows (2000), J.A. Carmill, S.E. Zarkouny, B.A. Hensley, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Rates of embryo survival in lactating dairy cows were assessed in three separate studies. Based on pregnancy diagnoses 27 to 29 days after timed inseminations, survival to days 40 to 50 or day 57, depending on the study, varied from 9 to 88% in cows that were not cycling before insemination compared to 57 to 90% in cows that were cycling. Previously anestrous cows had lower rates of survival. In one study, supplementing cows with progesterone before insemination improved embryo survival.; Dairy Day, 2000, Kansas State University, Manhattan, KS, 2000;

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Effects Of Stage Of Maturity At Harvest And Kernel Processing On The Nutrient Digestibility Of Corn Silage (2000), T.J. Wistuba, L.A. Whitlock, M.K. Siefers, K.K. Bolsen, Ronald V. Pope Jan 2000

Effects Of Stage Of Maturity At Harvest And Kernel Processing On The Nutrient Digestibility Of Corn Silage (2000), T.J. Wistuba, L.A. Whitlock, M.K. Siefers, K.K. Bolsen, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Twelve ruminally cannulated crossbred steers were used to evaluate the effects of stage of maturity and kernel processing (rolling) of whole-plant corn silage on nutrient digestibilities. The six silage rations were: 50% milkline, 80% milkline, and 7 days after-black layer (7BL) each ensiled processed (rolled) or unprocessed. Steers consuming the 80% milkline and 7BL processed rations had numerically higher DM and OM digestibilities, and all processed rations had numerically higher starch digestibilities. However, the three processed rations had numerically lower fiber digestibilities (NDF and/or ADF). Steers consuming the 80% milkline rations had numerically higher nutrient digestibilities than those fed the …

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Alfalfa Hay Levels In Limit-Fed, High-Energy, Growing Diets For Beef Steers (2000), Sean P. Montgomery, J.J. Sindt, T.B. Farran, H.J. Labrune, R.D. Hunter, James J. Higgins, T.A. Nutsch, R.A. Stock, James S. Drouillard Jan 2000

Alfalfa Hay Levels In Limit-Fed, High-Energy, Growing Diets For Beef Steers (2000), Sean P. Montgomery, J.J. Sindt, T.B. Farran, H.J. Labrune, R.D. Hunter, James J. Higgins, T.A. Nutsch, R.A. Stock, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

One hundred sixty-four crossbred beef steers were used in a 102-day growing study to determine optimum levels of alfalfa hay in limit-fed, high-energy, growing diets. Diets contained steam-flaked corn and 40% Sweet Bran® brand wet corn gluten feed (dry matter basis) with 0, 10, or 20% ground alfalfa hay. A fourth diet containing steam-flaked corn (no Sweet Bran) and 20% ground alfalfa hay was used as a control. Average daily gains and feed efficiencies in the growing phase were greater (P.40) among diets during the finishing phase.

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Supplementation Strategies For Forage-Fed Beef Steers (2000), R.D. Hunter, T.A. Nutsch, James S. Drouillard, Dale A. Blasi Jan 2000

Supplementation Strategies For Forage-Fed Beef Steers (2000), R.D. Hunter, T.A. Nutsch, James S. Drouillard, Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

A comparison was made of different supplementation strategies for steer calves wintered on brome hay for 109 days. Treatments consisted of no supplement, 1.33 lb/head daily of a 30% protein range cube, a commercially available free-choice block supplement containing 40% crude protein (19% as non-protein nitrogen), and a soy-based block supplement containing soy solubles and full-fat soybeans with 40% crude protein (25% as nonprotein nitrogen). Following the backgrounding phase, steers were placed onto finishing rations and fed for an additional 152 days before being slaughtered. Gain during the growing phase was greater for all supplemented cattle than for unsupplemented controls. …

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Effect Of Level Of Surface-Spoiled Silage On The Nutritive Value Of Corn Silage-Based Rations, L.A. Whitlock, T. Wistuba, M.K. Siefers, B.E. Brent, K.K. Bolsen, Ronald V. Pope Jan 2000

Effect Of Level Of Surface-Spoiled Silage On The Nutritive Value Of Corn Silage-Based Rations, L.A. Whitlock, T. Wistuba, M.K. Siefers, B.E. Brent, K.K. Bolsen, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Twelve ruminally cannulated crossbred steers were used to determine the effects of level of surface-spoiled silages on dry matter (DM) intake and nutrient digestibilities of corn silage-based rations. Irrigated corn was harvested at the 80% milkline stage of maturity and ensiled in 3-ft-deep, pilot-scale, bunker silos and a 9-ft-diameter AgBag®. After 90 days, the bunkers were sealed with a single sheet of polyethylene, and this silage was designated "spoiled". The silage in the AgBag was designated "normal". The four rations contained 90% silage and 10% supplement (DM basis). The silages in the rations were: A) 100% normal; B) 75% normal: …

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Effects Of Feeding Two Microbial Additives In Sequence On Growth Performance And Carcass Characteristics Of Finishing Heifers (2000), G.L. Huck, K.K. Kreikemeier, G.A. Ducharme Jan 2000

Effects Of Feeding Two Microbial Additives In Sequence On Growth Performance And Carcass Characteristics Of Finishing Heifers (2000), G.L. Huck, K.K. Kreikemeier, G.A. Ducharme

Kansas Agricultural Experiment Station Research Reports

Four hundred fifty heifers (846 lb) were used in a 126-day experiment to investigate the effects of feeding two microbial additives, Lactobacillus acidophilus BG2FO4 (MicroCell) and Propionibacterium freudenreichii P-63 (MicroCell PB), alone or in sequence, on feedlot growth performance and carcass characteristics. A 21-day step-up period preceded heifers being placed on a final finishing diet containing 10% corn silage, 42% steam-flaked corn, 42% high-moisture corn, 3% soybean meal, and 3% mineral supplement. Premeasured amounts of microbial additive were mixed with water before being mixed directly with the total ration. Treatments consisted of 1) no microbial additive; 2) MicroCell for the …

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Effects Of Carnitine On Performance Of Finishing Steers (2000), R.H. Greenwood, C.A. Löest, Evan C. Titgemeyer, James S. Drouillard Jan 2000

Effects Of Carnitine On Performance Of Finishing Steers (2000), R.H. Greenwood, C.A. Löest, Evan C. Titgemeyer, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Ninety-five crossbred steers (787 lb initial body weight) were fed finishing diets (14.5% crude protein) for 129 days. Diets were based on steam-flaked corn and contained 6% alfalfa and 4% tallow. Steers were supplemented with 2 g per day of L-carnitine, or not supplemented (control). Feed intakes, gains, and feed efficiencies were not impacted by carnitine supplementation. However, steers receiving L-carnitine had fatter carcasses as indicated by tendencies (P<.2) for more subcutaneous fat, higher marbling scores, and higher yield grades. Carnitine supplementation may increase fat deposition and alter carcass quality of finishing cattle.

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Betaine Supplementation For Finishing Cattle (2000), C.A. Löest, C.M. Coetzer, R.D. Hunter, B.D. Lambert, Evan C. Titgemeyer, James S. Drouillard Jan 2000

Betaine Supplementation For Finishing Cattle (2000), C.A. Löest, C.M. Coetzer, R.D. Hunter, B.D. Lambert, Evan C. Titgemeyer, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Crossbred heifers (756 lb) were used to evaluate the effects of feed-grade betaine on animal performance and carcass characteristics. Heifers had ad libitum access to a finishing diet without betaine or with 4, 8, or 12 g/day of feed-grade betaine top-dressed at feeding. Feed intakes, gains, and feed efficiencies were not significantly altered by feed-grade betaine. Hot carcass weights tended to increase with the betaine supplementation, but dressing percent; percentage of kidney, pelvic and heart fat; fat thickness; or ribeye area were not altered. Yield grades were numerically greater, and marbling scores significantly greater for heifers supplemented with 4 or …

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Increasing Levels Of Rumensin® In Limit-Fed, High Energy, Growing Diets For Beef Steers And Effects On Subsequent Finishing Performance (2000), Sean P. Montgomery, J.J. Sindt, T.B. Farran, H.J. Labrune, R.D. Hunter, James J. Higgins, T.A. Nutsch, James S. Drouillard Jan 2000

Increasing Levels Of Rumensin® In Limit-Fed, High Energy, Growing Diets For Beef Steers And Effects On Subsequent Finishing Performance (2000), Sean P. Montgomery, J.J. Sindt, T.B. Farran, H.J. Labrune, R.D. Hunter, James J. Higgins, T.A. Nutsch, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

One hundred sixty-four crossbred beef steers were used to determine optimal Rumensin ® concentrations in limit-fed, high-energy, growing diets. Diets contained 30, 40, or 50 grams of Rumensin per ton of dry matter (R30, R40, and R50). Average daily gain and feed efficiency during the growing phase were not different (P>.80) among treatments. Steers that received R50 in the growing phase had the highest average daily gains during the finishing phase (P.40).

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Effects Of Supplementation Of Limit-Fed Growing Diets With Either Soybean Meal Or Nonenzymatically Browned Soybean Meal On Steer Performance (2000), C.M. Coetzer, C.A. Löest, D.J. Bindel, H. Labrune, R.D. Hunter, T.A. Nutsch, James J. Higgins, James S. Drouillard Jan 2000

Effects Of Supplementation Of Limit-Fed Growing Diets With Either Soybean Meal Or Nonenzymatically Browned Soybean Meal On Steer Performance (2000), C.M. Coetzer, C.A. Löest, D.J. Bindel, H. Labrune, R.D. Hunter, T.A. Nutsch, James J. Higgins, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Seventy two individually fed Angus x Hereford steers (642 lb) were used to evaluate the effects of supplementing limit-fed, growing diets with either soybean meal (SBM) or nonenzymatically browned soybean meal (NSBM). Eight steers were allotted to a control diet composed of 39.1% high-moisture corn, 42% cottonseed hulls, 10.4% ground corn, 5% cane molasses 2.25% urea, and 1.5% vitamins and minerals (dry basis). The remaining steers were allotted to diets that derived 100, 80, 60, or 40% of their supplemental protein from SBM or 60, 45, 30, or 15% of their supplemental protein from NSBN. The balance of supplemental protein …

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Effects Of Late-Summer Protein Supplementation On Stocker Cattle Performance, Feedlot Gain, And Carcass Traits (2000), T.T. Marston, D.O. Yauk, L.E. Wankel, J.F. Gleghorn Jan 2000

Effects Of Late-Summer Protein Supplementation On Stocker Cattle Performance, Feedlot Gain, And Carcass Traits (2000), T.T. Marston, D.O. Yauk, L.E. Wankel, J.F. Gleghorn

Kansas Agricultural Experiment Station Research Reports

A 2-year trial was conducted to study the effects of feeding an Arsoy™-based, 32% crude protein supplement to stocker cattle grazing late-summer native pastures. During about 90 days of late-summer/fall grazing, the steers efficiently converted the Arsoy supplement (5.3:1, as fed basis) into significantly greater weight gains (55 lb) relative to nonsupplemented contemporaries. Both groups of steers then were finished and slaughtered in commercial facilities to determine if the supplementation program had any carryover effects. Late-summer supplementation did not influence steers' feedlot gain or carcass traits including ribeye area, fat thickness, and quality grade. However, average hot carcass weight and …

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Relationship Of Plasma Glucose To Performance And Carcass Traits In Finishing Cattle (2000), H.J. Labrune, D.J. Bindel, C.C. Coetzer, C.A. Löest, R.D. Hunter, James J. Higgins, James S. Drouillard Jan 2000

Relationship Of Plasma Glucose To Performance And Carcass Traits In Finishing Cattle (2000), H.J. Labrune, D.J. Bindel, C.C. Coetzer, C.A. Löest, R.D. Hunter, James J. Higgins, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Blood glucose levels of finishing cattle were measured between 3 and 30 days prior to slaughter and compared to performance and carcass traits. In trial 1, blood samples were obtained from 318 heifers at 2 hours postfeeding at 30 days before slaughter. Plasma glucose levels were correlated positively with fat thickness (P<.01) and kidney, pelvic, and heart fat (P<.02). Trial 2 utilized 72 steers from which blood was collected at 15 hours postfeeding at 3 days before slaughter. Blood glucose was correlated positively with average daily gain (P<.01); dry matter intake (P<.01); hot carcass weight (P<.01); ribeye area (P<.01); fat thickness (P<.06); and kidney, pelvic, and heart fat (P<.01). A third trial was conducted with 77 individually fed steers to determine if blood glucose levels could be used to predict finishing performance and carcass traits. Contrary to trials 1 and 2, plasma glucose did not reflect performance or carcass traits except marbling score (P<.03).

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Refractive Index: A Rapid Method For Determination Of Starch Availability In Grains (2000), J.J. Sindt, Sean P. Montgomery, T.B. Farran, James S. Drouillard Jan 2000

Refractive Index: A Rapid Method For Determination Of Starch Availability In Grains (2000), J.J. Sindt, Sean P. Montgomery, T.B. Farran, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Steam-flaked corn samples were used in a series of experiments to determine if refractive index could be used as a rapid, inexpensive method to predict starch availability. Results were best when samples were incubated for 15 min with 500 to 600 active units of enzyme/gm of grain prior to measuring on a hand-held refractometer. Correlations to starch availability determined from gas production by a commercial lab were R=.64 for whole flakes and R=.79 when samples were ground. Samples of corn flaked to different densities produced estimates of solubility similar to an in situ dry matter disappearance assay (R2 = .84, …

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Drylot Receiving Program Vs Pasture Conditioning With Micotil® Metaphylaxis For Grazing Stocker Calves (2000), S.I. Paisley, Thomas R. Falkner, F.K. Brazle, Gerald L. Stokka Jan 2000

Drylot Receiving Program Vs Pasture Conditioning With Micotil® Metaphylaxis For Grazing Stocker Calves (2000), S.I. Paisley, Thomas R. Falkner, F.K. Brazle, Gerald L. Stokka

Kansas Agricultural Experiment Station Research Reports

Three stocker cattle field studies were conducted comparing a traditional 4- to 5-week drylot receiving program with injectable antibiotics administered on a pull-and-treat basis versus a pasture-based conditioning program using an initial metaphylaxis with Micotil® followed by immediately placing cattle on grass. Although daily gains were similar (P=.80) for both receiving programs during the first 28 days, pasture conditioning reduced the number of cattle treated and increased (P<.01) daily gains during the subsequent grazing phase.

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Combinations Of Wet Corn Gluten Feed And Steam Flaked Corn In Finishing Cattle Diets (2000), J.J. Sindt, Sean P. Montgomery, T.B. Farran, H.J. Labrune, R.D. Hunter, James J. Higgins, R.T. Ethington, R.U. Lindquist, James S. Drouillard Jan 2000

Combinations Of Wet Corn Gluten Feed And Steam Flaked Corn In Finishing Cattle Diets (2000), J.J. Sindt, Sean P. Montgomery, T.B. Farran, H.J. Labrune, R.D. Hunter, James J. Higgins, R.T. Ethington, R.U. Lindquist, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

A 152-day experiment was conducted using 615 crossbred steers to evaluate cattle performance when steam-flaked corn in finishing diets was replaced partially with wet corn gluten feed (CGF). Finishing diets contained no wet CGF (0CGF) or 30 and 60% CGF on a dry matter basis (30CGF and 60CGF). Ruminal and fecal pH increased linearly (P<.01) as the proportion of wet corn gluten feed increased. Cattle fed 60CGF gained less than those fed 30CGF (P<.01) and were less efficient than cattle fed 0CGF or 30CGF (P<.05). Dressing percentage was lower (P<.03) for cattle fed 60CGF compared to cattle fed 30CGF. Incidence of liver abscesses increased linearly (P<.01) as the level of CGF increased. Replacing steamflaked corn with wet CGF at 30% of the diet did not alter performance.

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Effects Of Sickness On Weight Gain And Radiant Energy Loss In Recently Received Feeder Cattle (2000), M.F. Spire, J.M. Sargeant, James S. Drouillard Jan 2000

Effects Of Sickness On Weight Gain And Radiant Energy Loss In Recently Received Feeder Cattle (2000), M.F. Spire, J.M. Sargeant, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Sickness from undifferentiated respiratory disease in recently received feeder cattle reduced weight gain and altered radiant energy loss. Over a 35-day receiving period, weight gains were reduced 26.3% if an animal was diagnosed as sick once and 48.1% if diagnosed sick more than once. Thermal profiles obtained 10 or more days following clinical illness were cooler than profiles of animals never diagnosed as being sick. Our data suggest that respiratory disease alters metabolic activity as evidenced by reduced weight gain and a detectable decrease in radiant energy loss from the body surface.

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Effects Of Florfenicol Metaphylaxis In Reducing Morbidity And Associated Performance Losses In Stressed Beef Calves (2000), G.L. Huck, Gerald L. Stokka, T.T. Marston, Thomas R. Falkner Jan 2000

Effects Of Florfenicol Metaphylaxis In Reducing Morbidity And Associated Performance Losses In Stressed Beef Calves (2000), G.L. Huck, Gerald L. Stokka, T.T. Marston, Thomas R. Falkner

Kansas Agricultural Experiment Station Research Reports

In February, 1998, 191 crossbred steers (885 lb) were used in a 28-day feeding trial to evaluate the effects of florfenicol (Nuflor®) on morbidity of newly weaned, lightweight cattle. No clinical signs of illness were observed in either the medicated or control group. No statistically significant differences in daily gain, feed intake, or feed efficiency were observed between treated and nontreated cattle.

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Effects Of A Clostridial Bacterin-Toxoid Administered Subcutaneously At The Base Of The Ear On Stocker Heifer Performance, Testosterone Serum Concentrations, And Infrared Thermal Characteristics Of The Injection Site And Adjacent Tissues (2000), J.M. Sargeant, M.F. Spire, S.I. Paisley, J. Ernest Minton, Dale A. Blasi Jan 2000

Effects Of A Clostridial Bacterin-Toxoid Administered Subcutaneously At The Base Of The Ear On Stocker Heifer Performance, Testosterone Serum Concentrations, And Infrared Thermal Characteristics Of The Injection Site And Adjacent Tissues (2000), J.M. Sargeant, M.F. Spire, S.I. Paisley, J. Ernest Minton, Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

A 129-day field study was conducted to evaluate the effects of a clostridial bacterintoxoid administered subcutaneously at the base of the ear on heifer calf performance, surfaceear temperature, and testosterone concentration. Two hundred previously non-implanted heifers averaging 372 lb were assigned to one of four treatments: 1) α-7 (clostridial toxoid) in left neck, Synovex-H in left ear (NL); 2) α-7 in left neck, Synovex-H in right ear (NR); 3) α-7 in right ear, Synovex-H in opposite ear (OP); and 4) α-7 in right ear, Synovex-H in same ear (SM). On day 7, the right ear of each heifer was thermographically …

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Differences In Serum Immunoglobulin G1 And Total Protein Concentrations In Neonatal Calves On Days 1, 5, And 10 (2000), L.E. Wankel, T.T. Marston, Gerald L. Stokka, Timothy G. Rozell Jan 2000

Differences In Serum Immunoglobulin G1 And Total Protein Concentrations In Neonatal Calves On Days 1, 5, And 10 (2000), L.E. Wankel, T.T. Marston, Gerald L. Stokka, Timothy G. Rozell

Kansas Agricultural Experiment Station Research Reports

Immunoglobulin G1 (IgG1) serum concentrations are used to evaluate passive transfer of immunity in neonatal calves. Total serum proteins also can be measured to evaluate calf health. If IgG1 and total serum protein concentrations change with age, it becomes imperative to compare samples only from a narrow time period. Otherwise, differences might be due to age and not immune status. To help define this time period, blood was drawn from 10 beef calves when they were 1, 5, and 10 days of age. Serum samples were analyzed for IgG1 and total protein concentrations. Total protein concentrations decreased from days 1 …

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