Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Journal

Kansas Agricultural Experiment Station Research Reports

1993

Discipline
Keyword

Articles 1 - 30 of 111

Full-Text Articles in Life Sciences

Use Of Cystorelin® And Artificial Insemination In Repeat-Breeding Beef Heifers After Estrous Synchronization, J.P. Holz, P.L. Houghton, M.F. Spire Jan 1993

Use Of Cystorelin® And Artificial Insemination In Repeat-Breeding Beef Heifers After Estrous Synchronization, J.P. Holz, P.L. Houghton, M.F. Spire

Kansas Agricultural Experiment Station Research Reports

Gonadotropin-releasing hormone (GnRH) was administered to a group of 13- to 14- month-old Angus and Angus crossbred repeat-breeding heifers at the time of the second or third artificial insemination to determine its effect on conception rates. Little benefit was derived from the use of GnRH at either second or third service in highly developed repeat-breeding heifers.


A Laboratory System For Modeling Hay Storage, W.K. Coblentz, J.O. Fritz, K.K. Bolsen Jan 1993

A Laboratory System For Modeling Hay Storage, W.K. Coblentz, J.O. Fritz, K.K. Bolsen

Kansas Agricultural Experiment Station Research Reports

A simple system is described that uses a hinged metal baling unit and a hydraulic press to make 4.0 x 4.3 x 5.3 inch wire-tied, laboratory- scale, hay bales. A comparison of densities of conventional, small, alfalfa bales (15x18x37 inches) and laboratory bales was made over a wide range of moisture levels (15 to 36%) and conventional bale densities (10 to 25 lb/ft3). Laboratory bale densities were regressed against conventional bale densities and agreement was excellent. The system is inexpensive to build and easy to use and can be reproduced easily.


Reproductive Performance Of Yearling Beef Heifers After Estradiol Benzoate And Estrous Synchronization, R.P. Bolze, C.W. Peters Jan 1993

Reproductive Performance Of Yearling Beef Heifers After Estradiol Benzoate And Estrous Synchronization, R.P. Bolze, C.W. Peters

Kansas Agricultural Experiment Station Research Reports

Injectable estradiol (estradiol benzoate) was evaluated for its effect on the reproductive performance of yearling beef heifers whose estrous cycles were synchronized using the melengestrol acetate/prostaglandin F 2 α (MG- 2 A®/PG) system. Estradiol was injected 40 h after prostaglandin. Heifers were inseminated artificially (AI) 12 h after first observed heat during a 35-d AI period followed by 28 d of bull exposure. Estradiol had no effect on heat response or first-service pregnancy rate to AI during the synchronized period (5 d) and had no significant effect on overall AI pregnancy rate (35 d), cumulative pregnancy rate (63 ...


Storage Losses In Net-Wrapped, Large, Round Bales Of Alfalfa Hay, R.K. Taylor, D.L. Kueck, C.E. Addison, Dale A. Blasi, Thomas Mark Maxwell, James P. Shroyer Jan 1993

Storage Losses In Net-Wrapped, Large, Round Bales Of Alfalfa Hay, R.K. Taylor, D.L. Kueck, C.E. Addison, Dale A. Blasi, Thomas Mark Maxwell, James P. Shroyer

Kansas Agricultural Experiment Station Research Reports

Net- and twine-wrapped alfalfa hay bales were stored from July, 1990 to April, 1991 in three Kansas counties (Reno, Saline, and Stafford). Dry matter losses and changes in acid detergent fiber and acid detergent insoluble nitrogen levels during storage were not significantly different between net- and twine-wrapped bales. Although a significant difference in dry matter recovery between inside and outside bale storage occurred in Saline County, it was not considered important because all recoveries were high. No significant differences in ADF or ADIN increases were found between initial core samples and samples from the outer 4 in. of the bales ...


Progesterone Concentrations, Estrous Response, And Fertility In Beef Heifers After Estrous Synchronization Using Melengestrol Acetate® And Prostaglandin F2Α, C.W. Peters, Robert L. Larson, L.R. Corah Jan 1993

Progesterone Concentrations, Estrous Response, And Fertility In Beef Heifers After Estrous Synchronization Using Melengestrol Acetate® And Prostaglandin F2Α, C.W. Peters, Robert L. Larson, L.R. Corah

Kansas Agricultural Experiment Station Research Reports

Melengestrol acetate (MGA®) and prostaglandin F2α(PG; Lutalyse®) were used to synchronize estrus in 757 yearling, virgin, beef heifers on six commercial ranches. Heifers were inseminated artificially (AI) 12 h after first detected estrus; those not detected in estrus were time-inseminated 72 h post-PG injection. Heifers detected in estrus by 72 h had higher AI and overall pregnancy rates than their counterparts not detected in estrus. Heifers with serum progesterone > 1 ng/ml at PG administration were generally more fertile than those with progesterone < 1 ng/ml. Of the heifers not detected in estrus and with low progesterone (<1 ng/ml), 24% still conceived to the timed insemination at 72 h, but only 73% became pregnant during the entire breeding period. Overall AI conception rate, based on estrous detection and timed insemination, was 49% and varied from 24% to 69% among the six ranches. Heifers exhibiting estrus and with elevated (>1 ng/ml) serum progesterone showed acceptable pregnancy rates (63% AI and 94% overall).


Summer Annual Forages In South Central Kansas, William F. Heer, Dale A. Blasi, Dale L. Fjell Jan 1993

Summer Annual Forages In South Central Kansas, William F. Heer, Dale A. Blasi, Dale L. Fjell

Kansas Agricultural Experiment Station Research Reports

Six summer annuals and three forage sorghums were evaluated for forage yield and quality under south central Kansas dryland conditions. When cut in the late boot to early heading stage, all forage types (millet, sudan, sorghum-sudan, and forage sorghum) produced similar dry matter yields, with no consistent differences in nutritional quality. Allowing the forages to reach maturity prior to cutting increased total yield per acre but decreased the crude protein content. The millets were higher in protein at maturity than the sudans or forage sorghums. However, the forage sorghums produced the most mature forage, whereas common sudan yielded the least ...


Aflatoxins: Contamination Of Animal Feeds And Food Products, Randall K. Phebus Jan 1993

Aflatoxins: Contamination Of Animal Feeds And Food Products, Randall K. Phebus

Kansas Agricultural Experiment Station Research Reports

Mycotoxins are toxic chemicals produced by certain species of molds during their growth on numerous substrates. Molds can invade the food and feed supply at various points throughout production, storage, processing, and distribution. Of most concern are the aflatoxins, which are highly toxic and classified as probable human carcinogens. Aflatoxins are often associated with crops that have undergone stress or feeds and foods that have been stored improperly. Tremendous economic implications are associated with regulation, testing, and loss of agricultural products from aflatoxin contamination. Dairy cattle excrete a portion of consumed aflatoxins into milk, thus, leading to a strict action ...


Kansas Farm Management Association Dairy Cow Herd Enterprise Management Analysis, F. D. Delano, Michael R. Langemeier Jan 1993

Kansas Farm Management Association Dairy Cow Herd Enterprise Management Analysis, F. D. Delano, Michael R. Langemeier

Kansas Agricultural Experiment Station Research Reports

Actual dairy cow herd enterprise records from Kansas Farm Management Association farms over the past 4 years have shown an increase in returns over variable costs from $17,900 to $23,300 per farm for a 100-cow dairy herd in favor of herds with higher milk-producing cows. Cost per hundred weight of milk produced per cow decreased for the higher-producing herds compared with lower-producing herds, even though total cost per cow increased. In 1992, for every extra $1.00 spent on feed and other variable costs, the higher producing herds earned $1.71. This was a 71% return per dollar ...


Body Condition Scoring: A Management Tool, John E. Shirley Jan 1993

Body Condition Scoring: A Management Tool, John E. Shirley

Kansas Agricultural Experiment Station Research Reports

Body condition scoring provides a tool to help the dairy herd manager evaluate his/her nutrition and management program. It takes time, has an associated cost, and will result in a positive economic return if one makes management changes suggested by the results. Body condition scoring done simultaneously with other herd events reduces the time required and provides the herd manager with coordinated information.; Dairy Day, 1993, Kansas State University, Manhattan, KS, 1993;


Components Of A Progressive Reproductive Management Program, Jeffrey S. Stevenson Jan 1993

Components Of A Progressive Reproductive Management Program, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

These are somewhat exciting times for dairy producers because of the new arsenal of hormones available for controlling estrous cycles and improving fertility. Using Bovilene® seems to assist cows in releasing a retained placenta. Most studies have demonstrated that using GnRH as a followup treatment (day 10 to 18 postpartum) for dairy cows with periparturient problems such as retained placenta improves their subsequent reproductive performance. Prophylactic treatment of early postpartum cows with GnRH (days 10 to 18) or prostaglandin F2α (days 20 to 40) improved their reproductive performance in most studies as well. Injections of GnRH at the time of ...


Evaluation Of Spray-Dried Wheat Gluten As A Component Of Calf Starters, H. Terui, J. L. Morrill, M. Yashima Jan 1993

Evaluation Of Spray-Dried Wheat Gluten As A Component Of Calf Starters, H. Terui, J. L. Morrill, M. Yashima

Kansas Agricultural Experiment Station Research Reports

Holstein calves (n =52) were on experiment from birth to 10 wk of age. Control calves were fed starters containing soybean meal as the protein supplement. The other calves were fed starters in which part of the soybean meal was replaced by spraydried wheat gluten. Bull calves fed starters containing wheat gluten consumed more starter during the third and fourth week and gained more weight during the third week than control calves, but overall differences in weight gain or feed intake were not significant, nor was there a significant carryover effect when all calves were fed the same diet.; Dairy ...


High Quality Alfalfa In Short Supply - Now What?, James R. Dunham Jan 1993

High Quality Alfalfa In Short Supply - Now What?, James R. Dunham

Kansas Agricultural Experiment Station Research Reports

Wetter than normal growing and harvesting conditions have resulted in a short supply of high quality alfalfa. Because forage quality affects milk production in early lactation cows, dairy farmers are encouraged to consider other alternatives to feeding low quality alfalfa to high-producing dairy cows.; Dairy Day, 1993, Kansas State University, Manhattan, KS, 1993;


In Vitro Digestibility Of Sorghum Parent Lines Predicts Nutritional Value Of Their Hybrid Offspring In Cannulated Finishing Pigs, B J. Healy, P J. Bramel-Cox, Robert H. Hines, Joe D. Hancock Jan 1993

In Vitro Digestibility Of Sorghum Parent Lines Predicts Nutritional Value Of Their Hybrid Offspring In Cannulated Finishing Pigs, B J. Healy, P J. Bramel-Cox, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Nutritional value of eight sorghum hybrids, resulting from matings of four male lines with two male-sterile lines, was determined. The male lines were two sorghums with consistently high in vitro digestibility (High-digestibility 1 and Highdigestibility 2) and two sorghums with consistently low in vitro digestibility (Lowdigestibility 1 and Low-digestibility 2). The male-sterile lines were Kansas 52 and Redlan, two lines commonly used for genetic testing by sorghum breeders. The hybrids were fed to eight barrows fitted with ileal T-cannulas and also evaluated for starch digestibility in ruminal fluid. Corn was used as a control. Corn had greater ileal and total ...


Effect Of Methionine:Lysine Ratio On Growth Performance And Blood Metabolites Of Growing-Finishing Pigs, L J. Kats, K G. Friesen, B T. Richert, K Q. Owen, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach Jan 1993

Effect Of Methionine:Lysine Ratio On Growth Performance And Blood Metabolites Of Growing-Finishing Pigs, L J. Kats, K G. Friesen, B T. Richert, K Q. Owen, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

Eighty growing-finishing pigs (40 barrows and 40 gilts) were used in three consecutive growth assays to determine the optimum methionine:lysine ratio for pigs weighing from 48 to 107 lb, 120 to 179 lb, and 191 to 245 lb, respectively. Each growth assay was to be conducted for a 28-d period with a 14-d transition period between assays. Pigs were allotted by weight and placed in pens each containing one barrow and one gilt. Pigs were assigned to one of eight experimental treatments with five replicate pens per treatment. Pigs were fed diets containing either high lysine (1.0, .9 ...


Integrated Swine Systems "The Animal Component " - Phase One; The Kansas State University Survey, B T. Richert, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1993

Integrated Swine Systems "The Animal Component " - Phase One; The Kansas State University Survey, B T. Richert, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A total of 650 questionnaires were sent to Kansas swine producers, and 279 were returned. There was an excellent distribution in producer size based on number of pigs marketed per year and producer age and educational level. The use of a lagoon to store swine waste is the most popular method in Kansas (38.8% of the respondents). One-third of the swine waste is disposed of by surface spreading and only 10.0% is applied primarily by soil injection. Less than one-half (45.5%) of the producers feel that nitrates in swine waste are environmental concerns and even less (27 ...


Economies Of Size For Farrow-To-Finish Hog Production In Kansas, Michael R. Langemeier, Ted C. Schroeder Jan 1993

Economies Of Size For Farrow-To-Finish Hog Production In Kansas, Michael R. Langemeier, Ted C. Schroeder

Kansas Agricultural Experiment Station Research Reports

Economies of size measure the impact on average cost of production of increasing the size of operation. Data from 91 farrow-to- finish operations enrolled in the Kansas Farm Management Associations in 1992 were used to empirically estimate economies of size. Results indicate that average total cost and operation size are significantly correlated, and that average total cost declines as operations become larger. Results also indicate a substantial variability in costs of production between producers. In fact, costs of production between producers of a given size vary more than costs of production between operations of different sizes.; Swine Day, Manhattan, KS ...


Pellet Quality Affects Growth Performance Of Nursery And Finishing Pigs, C R. Stark, Robert H. Hines, Keith C. Behnke, Joe D. Hancock Jan 1993

Pellet Quality Affects Growth Performance Of Nursery And Finishing Pigs, C R. Stark, Robert H. Hines, Keith C. Behnke, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the effects of diet form (meal vs pellet) and amount of fines in pelleted feed on growth performance of nursery and finishing pigs. One hundred twenty-six weanling pigs, with an average initial body wt of 12.5 lb, were used in the 35-d nursery experiment. The same phase I diet (pelleted) was fed to all pigs for 7 d, then the pigs were switched to phase II diet treatments (d 7 to 35 postweaning). Treatments were the same phase II diet fed as: 1) meal; 2) screened pellets (fines removed); and 3) the screened ...


Effects Of Cellulase Enzyme And A Bacterial Feed Additive On The Nutritional Value Of Sorghum Grain For Finishing Pigs, I H. Kim, C R. Risley, Robert H. Hines, Joe D. Hancock Jan 1993

Effects Of Cellulase Enzyme And A Bacterial Feed Additive On The Nutritional Value Of Sorghum Grain For Finishing Pigs, I H. Kim, C R. Risley, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

One hundred and twenty-eight finishing pigs (113 lb average initial body wt) were used to determine the effects of adding cellulase enzyme and Bacillus bacteria to sorghum-based diets on growth performance, carcass merit, and nutrient digestibility in finishing pigs. Treatments were: 1) corn-soybean meal-based positive control; 2) sorghum-soybean meal-based negative control; 3) Diet 2 with cellulase; and 4) Diet 2 with a bacterial feed additive (i.e., a mixture of Bacillus licheniformis, Bacillus subtilis, and Bacillus pumilus). There was a trend for greater average daily gain in pigs fed corn vs the sorghum treatments from d 0 to 28, but ...


The Effects Of Dietary Soy Protein Source Fed To The Early-Weaned Pig On Subsequent Growth Performance, K Q. Owen, B T. Richert, K G. Friesen, L J. Kats, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 1993

The Effects Of Dietary Soy Protein Source Fed To The Early-Weaned Pig On Subsequent Growth Performance, K Q. Owen, B T. Richert, K G. Friesen, L J. Kats, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two hundred and ninety five pigs (initially 12.3 lb and 21 d of age) were used to determine the effect of different soy protein sources fed during phase I on subsequent growth performance. Dietary treatments were based on different soy protein sources added to the phase I (d 0 to 14 postweaning) diet. Pigs were fed one of five experimental treatments: 1) control diet (casein); 2) moist extruded soy protein concentrate (MESPC); 3) soybean meal (SBM); 4) soy protein concentrate (SPC); 5) moist extruded soy flour (MESF). The phase I diet contained 20% dried whey (DW), 7.5% spray ...


Appropriate Level Of Lactose In A Plasma Protein-Based Diet For The Early-Weaned Pig, K Q. Owen, L J. Kats, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz Jan 1993

Appropriate Level Of Lactose In A Plasma Protein-Based Diet For The Early-Weaned Pig, K Q. Owen, L J. Kats, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 367 weanling pigs (initially 11.8 lb and 21 d of age) was used in a 28 d growth assay to determine the appropriate level of lactose needed in phase I diets containing spray-dried porcine plasma (SDPP) for the early-weaned pig. Pigs were blocked by weight and randomly assigned to one of six experimental diets: a positive control or five diets calculated to contain 7, 11, 15, 19, or 23% lactose. The positive control was a high nutrient density diet (HNDD) containing 7.5% SDPP, 1.75% spray-dried blood meal (SDBM), and 20% edible grade dried whey ...


Optimum Level Of Spray-Dried Porcine Plasma For Early-Weaned (10.5 D Of Age) Starter Pigs, K Q. Owen, Steven S. Dritz, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1993

Optimum Level Of Spray-Dried Porcine Plasma For Early-Weaned (10.5 D Of Age) Starter Pigs, K Q. Owen, Steven S. Dritz, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A total of 290 early-weaned pigs (initially 7.6 lb and 10.5 d of age) was used to evaluate various levels of spray-dried porcine plasma. Pigs were assigned to one of five experimental diets with either 5, 7.5, 10, 12.5, or 15% spray-dried porcine plasma replacing dried skim milk. Pigs were fed this diet for the first 14 days postweaning. Common diets were fed from d 14 to 42 postweaning in order to monitor subsequent performance. During the first phase (d 0 to 14 postweaning), linear improvements in average daily gain (ADG) and average daily feed intake ...


Growth And Microbiology Of Nonmedicated, Segregated, Early-Weaned Pigs, M M. Chengappa, M W. Vorhies, Steven S. Dritz, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband Jan 1993

Growth And Microbiology Of Nonmedicated, Segregated, Early-Weaned Pigs, M M. Chengappa, M W. Vorhies, Steven S. Dritz, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

Seventy pigs, 7 to 10 d of age, were randomly selected by litter of origin from a commercial farm in Northeast Kansas to compare the growth and microbiology of nonmedicated, segregated, early-weaned pigs to controls raised at the farm of origin. After weaning, both groups were fed a similar nutritional programs consisting of dry diets. No antimicrobial drugs were administered to the pigs except for a feed grade antimicrobial (carbadox) from weaning to 50 lb. Pigs were monitored for 12 weeks. Individual pigs weights, nasal swabs, and serum samples were collected on d 0 and then every 14 d thereafter ...


Extrusion Of Sorghum Grain And Soybeans For Lactating Sows, C G. Mills, Terry L. Gugle, Robert H. Hines, Joe D. Hancock Jan 1993

Extrusion Of Sorghum Grain And Soybeans For Lactating Sows, C G. Mills, Terry L. Gugle, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

One hundred-seventeen primiparous sows were used to determine the effects of extruded sorghum grain and soybeans in lactation diets on sow and litter performance. The sows were fed a sorghum-soybean-based diet with the sorghum and soybeans extruded either singly or together. Treatments were: 1) ground sorghum-soybean meal (SBM)-soy oil-based control; 2) extruded sorghum-SBM-soy oil; 3) ground sorghum-extruded soybeans; and 4) sorghum and extruded soybeans blended then extruded together (extruded blend). All diets were formulated to .80% lysine, .90% Ca, .80% P, and 1.47 Mcal ME/lb. Sows fed diets with extruded ingredients tended to wean more pigs with ...


Valine: A Limiting Amino Acid For High-Producing Lactating Sows, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1993

Valine: A Limiting Amino Acid For High-Producing Lactating Sows, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A total of 152 lactating sows was used to determine the influence of dietary valine level on sow and litter performance. During lactation, sows were fed corn-soybean meal based diets containing .9% lysine and either .75 or .9% valine. Lactation diet had no influence on litter birth weight, pig survivability, pigs weaned per litter, or daily sow feed intake. However, sows fed the .90% valine diet had increased pig and litter weaning weights. These differences were magnified as number of pigs weaned and sow milk production increased. These results indicate that further research is needed to determine the valine requirement ...


Embryonic Survival And Variation In Embryonic Development On Day 11 Of Gestation, R M. Blair, C M. Coughlin, J Ernest Minton, Duane L. Davis Jan 1993

Embryonic Survival And Variation In Embryonic Development On Day 11 Of Gestation, R M. Blair, C M. Coughlin, J Ernest Minton, Duane L. Davis

Kansas Agricultural Experiment Station Research Reports

The primary objective of this study was to determine if embryo survival in gilts and primiparous sows was related to variations in the periovulatory profiles of estradiol- 17β, progesterone, and luteinizing hormone. A secondary objective was to compare embryo development and certain endocrine characteristics in gilts and primiparous sows. Sows (n=6) and gilts (n=6) were catheterized in the jugular vein on the day after weaning and day 14 of the estrous cycle, respectively. Additional females (1 gilt and 7 sows) were examined for characteristics of embryonic development, but blood samples were not collected. Embryo size and volume on ...


Evaluation Of 24 Corn Hybrids For Silage Agronomic Performance Under Both Irrigated And Dryland Conditions, R.N. Sonon, B.S. Dalke, D.L. Holthaus, D.R. Bonilla, L. Pfaff, John E. Boyer, B.E. Brent, K.K. Bolsen, Matthew A. Young Jan 1993

Evaluation Of 24 Corn Hybrids For Silage Agronomic Performance Under Both Irrigated And Dryland Conditions, R.N. Sonon, B.S. Dalke, D.L. Holthaus, D.R. Bonilla, L. Pfaff, John E. Boyer, B.E. Brent, K.K. Bolsen, Matthew A. Young

Kansas Agricultural Experiment Station Research Reports

In 1992, 24 corn hybrids were grown under both irrigated and dryland conditions and were harvested at 90% of the kernel milk line. Growing condition and hybrid significantly affected plant height and the number of days to the tasseling and silking stages. Most dryland hybrids had higher dry matter (DM) contents than irrigated hybrids, but all 24 hybrids had higher grain yields under irrigation. Growing condition and hybrid also significantly affected whole-plant DM and stover yields and percentages of cob and stover. The grain portion made the greatest contribution to the higher whole-plant silage yields for the irrigated hybrids compared ...


Luteinizing Hormone Release And Plasma Metabolites In Mature, Ovariectomized Beef Cows Fed Various Lipid Diets, C.W. Peters, L.R. Corah, R.C. Cochran Jan 1993

Luteinizing Hormone Release And Plasma Metabolites In Mature, Ovariectomized Beef Cows Fed Various Lipid Diets, C.W. Peters, L.R. Corah, R.C. Cochran

Kansas Agricultural Experiment Station Research Reports

Feeding rumen-escape lipid or soybean oil in a range supplement to beef cow resulted in elevated blood cholesterol and enhanced luteinizing hormone (LH) release compared to a control (milo and soybean meal) supplement. Cholesterol was elevated (P<.01) within 14 d of lipid feeding. The amplitude of each LH pulse and maximal pulse height were greater (P<.05) when cows were fed high-lipid diets. The positive influence of high-lipid diets on reproductive function may be explained in part by enhanced LH release.


Effects Of Hybrid, Growing Condition, Storage Time, And Pioneer 1174® Silage Inoculant On Agronomic Performance And Nutritive Value Of Wholeplant Corn And Grain Sorghum Silages, R. Suazo, R.N. Sonon, K.K. Bolsen Jan 1993

Effects Of Hybrid, Growing Condition, Storage Time, And Pioneer 1174® Silage Inoculant On Agronomic Performance And Nutritive Value Of Wholeplant Corn And Grain Sorghum Silages, R. Suazo, R.N. Sonon, K.K. Bolsen

Kansas Agricultural Experiment Station Research Reports

In 1989, two Pioneer corn hybrids, 3377 and 3389, were grown under irrigation and harvested at 80% milk line kernel maturity. Voluntary intakes and ADF digestibilities were similar for all hybrid, inoculant, and storage time combinations; however, DM digestibility was higher for 3377 silage than for 3389, and DM, CP, and NDF digestibilities were higher at the 50- than the 250-day storage time. The inoculant did not influence either voluntary intake or digestibility. In 1990, the same corn hybrids and DeKalb DK 42Y and Pioneer 8358 grain sorghum hybrids were grown under both irrigated and dryland conditions. Whole-plant DM contents ...


Influence Of Method Of Processing Supplemental Alfalfa On Intake And Utilization Of Dormant, Bluestem-Range Forage By Beef Steers, B.A. Lintzenich, R.C. Cochran, E.S. Vanzant, J.L. Beaty, Robert T. Brandt Jr., Tiruvoor G. Nagaraja, G. St. Jean Jan 1993

Influence Of Method Of Processing Supplemental Alfalfa On Intake And Utilization Of Dormant, Bluestem-Range Forage By Beef Steers, B.A. Lintzenich, R.C. Cochran, E.S. Vanzant, J.L. Beaty, Robert T. Brandt Jr., Tiruvoor G. Nagaraja, G. St. Jean

Kansas Agricultural Experiment Station Research Reports

A digestion trial was conducted to determine the effect of method of processing supplemental alfalfa on the intake and utilization of dormant, bluestem-range forage. Supplement treatments were 1) control: no supplement; 2) ground and pelleted, suncured alfalfa; 3) ground and pelleted dehydrated alfalfa; and 4) longstem alfalfa hay. Bluestem forage intake (% BW), diet digestibility, and ruminal dry matter fill 4 hours after feeding were increased (P<.10) when supplemental alfalfa was fed, compared with no supplementation. Little difference was evident among different forms of supplemental alfalfa for most of the forage utilization characteristics measured. However, a weak trend (P=.18) was observed for increased intake of bluestem forage by the steers supplemented with dehydrated alfalfa pellets compared with suncured alfalfa pellets.


Effect Of Density Of Steam Flaked Milo On Animal Performance, Mill Production Rate, And Subacute Acidosis, Robert T. Brandt Jr., A.S. Freeman, T.P. Eck, Christopher D. Reinhardt, Keith C. Behnke Jan 1993

Effect Of Density Of Steam Flaked Milo On Animal Performance, Mill Production Rate, And Subacute Acidosis, Robert T. Brandt Jr., A.S. Freeman, T.P. Eck, Christopher D. Reinhardt, Keith C. Behnke

Kansas Agricultural Experiment Station Research Reports

In Trial 1, 336 yearling steers (755 lb) were fed diets containing milo flaked to 22 (L), 25 (M), or 28 (H) lb/bu. The steers fed L consumed 3.2% less dry matter than cattle fed H (P<.05) and had 6.9% lower gains (P<.05). Feed efficiency tended (P=.15) to favor cattle fed H. The H milo was flaked 27% faster than M and 67% faster than L (P<.0001), resulting in lower production cost for the heavy flakes. In Trial 2, six ruminally cannulated steers were fed the same diets used in Trial 1 in a replicated 3x3 Latin square. After adaptation to the respective diets, the cattle were fasted and then overfed to simulate a drastic intake fluctuation. The L diet was fermented more rapidly than the H diet, resulting in greater ruminal pH depression (P<.10) following overconsumption. Under the conditions of this experiment, flaking milo more intensively than 28 lb/bu (58.7% starch gelatinization) resulted in decreased consumption, lower mill efficiency, and increased propensity for acidosis in finishing steers.