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Cattlemen's Day

1993

Articles 1 - 30 of 54

Full-Text Articles in Life Sciences

Factors Affecting Pregnancy Rates And Calving Difficulty In Commercial Beef Heifers, S.D. Utter, P.L. Houghton, L.R. Corah, M.F. Spire, James J. Higgins, M.D. Butine Jan 1993

Factors Affecting Pregnancy Rates And Calving Difficulty In Commercial Beef Heifers, S.D. Utter, P.L. Houghton, L.R. Corah, M.F. Spire, James J. Higgins, M.D. Butine

Kansas Agricultural Experiment Station Research Reports

Data from yearling Angus and Angus crossbred beef heifers from a commercial ranch were used to identify factors affecting pregnancy rates (n=342) and calving difficulty (n=295). Production data analyzed included prebreeding weight, average daily gain during the breeding season, and postbreeding weight; evaluations of hip height, frame score, weight:height ratio, and reproductive tract score were made at approximately 1 yr of age. Pregnancy rates were affected significantly by weight:height ratio, prebreeding weight, and reproductive tract score. However, based on correlation coefficients, the magnitude of influence of these traits on first-service conception and overall pregnancy rates was ...


Effect On Summer Stocker Gains When Native Grass Pastures Were Either Grazed Short During The Dormant Season Or Burned In April, F.K. Brazle Jan 1993

Effect On Summer Stocker Gains When Native Grass Pastures Were Either Grazed Short During The Dormant Season Or Burned In April, F.K. Brazle

Kansas Agricultural Experiment Station Research Reports

Four hundred and ten mixed-breed heifers were intensively early grazed for 81 days on native tall grass pastures where dormant growth had been removed by either winter grazing or April burning. Heifers grazing the burned pastures gained .19 lb/day more (1.99 vs 1.80 lb; P<.05) than those grazing pastures that had the dormant grass removed by heavy grazing during February and March.


How Does Cow-Calf Association Inhibit The Onset Of Estrous Cycles After Calving?, J. Ernest Minton, E.L. Knoppel, R.E. Stewart, S.D. Viker, G.H. Kiracofe, Jeffrey S. Stevenson Jan 1993

How Does Cow-Calf Association Inhibit The Onset Of Estrous Cycles After Calving?, J. Ernest Minton, E.L. Knoppel, R.E. Stewart, S.D. Viker, G.H. Kiracofe, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

The "suckling response" maintains anestrus in beef cows for about 40 to 60 days postpartum. The suckling response remains intact in mastectomized cows, so stimulation of the inguinal area, and not milk flow or teat stimulation, must be part of the response. Cow-calf recognition is part of the suckling response because suckling by cross-fostered calves after nose-to-nose contact followed by suckling of an alien calf does not prevent cycling. We believe the suckling response involves a cow recognizing her own calf, followed by the calf stimulating her inguinal area. It may be possible to initiate estrus by simply blocking the ...


Protein Supplementation Of Ammoniated Wheat Straw: Effect On Intake And Digestion In Beef Steers, G.D. Fike, D.D. Simms, R.C. Cochran, Robert T. Brandt Jr., E.S. Vanzant, Gerry L. Kuhl Jan 1993

Protein Supplementation Of Ammoniated Wheat Straw: Effect On Intake And Digestion In Beef Steers, G.D. Fike, D.D. Simms, R.C. Cochran, Robert T. Brandt Jr., E.S. Vanzant, Gerry L. Kuhl

Kansas Agricultural Experiment Station Research Reports

Sixteen ruminally fistulated steers (avg wt. = 998 lb) were used in a 30-day conventional digestion trial to examine the effects of protein supplementation on intake and digestion of ammoniated wheat straw. Steers were assigned to one of four protein supplementation programs: 1) Control (C) - no supplement, 2) Low Protein (LP) - 4.5 lb of a 10% crude protein (CP) supplement, 3) Medium Protein (MP) - 4.5 lb of a 20% CP supplement, or 4) High Protein (HP) - 4.5 of a lb 30% CP supplement. Supplements were mixtures of milo and soybean meal. Supplementation increased (P<.05) dry matter intake, tended (P=.09) to increase intake of digestible neutral detergent fiber (NDF), and increased (P<.05) intake of forage dry matter. Dry matter digestibility was higher (P<.05) for HP steers than C and LP steers, but no difference was detected between MP, and HP steers. Steers on HP, MP, and C treatments exhibited higher NDF digestibility than LP steers. Rumen pH, total volatile fatty acid concentration, and acetate to propionate ratio were unaffected by supplementation.


The Relationships Of Color To Performance And Carcass Traits In Cattle, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman Jan 1993

The Relationships Of Color To Performance And Carcass Traits In Cattle, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

The effects of primary color (black, red, or white) on performance and carcass characteristics of 253 cross-bred calves were evaluated. The only effect of color was that white calves had lighter birth weights than red calves, which was probably the result of the maternal influence of the Brahman breed. White calves also had a lower carcass yield grade than red calves. No other effects of color on performance or carcass traits were found. It can be concluded that knowledge of breed and expected progeny differences (EPD) of the sire within the breed are more accurate methods of predicting the future ...


Comparison Of Conventional And Laboratory-Scale Alfalfa Hay Bales In Small Haystacks, W.K. Coblentz, J.O. Fritz, K.K. Bolsen Jan 1993

Comparison Of Conventional And Laboratory-Scale Alfalfa Hay Bales In Small Haystacks, W.K. Coblentz, J.O. Fritz, K.K. Bolsen

Kansas Agricultural Experiment Station Research Reports

A system for making laboratory-scale alfalfa hay bales was evaluated in two trials. In the first, conventional rectangular and laboratory-scale bales were made at each of seven different combinations of moisture and density. Laboratory bales were incubated between two parent conventional bales of identical moisture content and bale density. Laboratory bales remained different (P<.05) from parent conventional bales for most temperature-related storage traits. Agreement between bale types was better for most quality traits. To achieve closer agreement between bale types, a second experiment was conducted in which the laboratory bales were made at 1.0, 1.3, 1.6, and 2.0 times the density of the conventional bales. Agreement improved between laboratory bales of higher densities and conventional bales for most temperature traits. High-density laboratory bales had significantly greater acid detergent insoluble nitrogen values than conventional bales, particularly at the highest moisture level. These results implicate bale density as an important factor in heat damage to proteins in alfalfa hay.


Use Of Visual Appearance As An Indicator Of Degree Of Doneness In Ground Beef Patties, K.E. Warren, Melvin C. Hunt, M.A. Hague, Donald H. Kropf, Sally L. Stroda Jan 1993

Use Of Visual Appearance As An Indicator Of Degree Of Doneness In Ground Beef Patties, K.E. Warren, Melvin C. Hunt, M.A. Hague, Donald H. Kropf, Sally L. Stroda

Kansas Agricultural Experiment Station Research Reports

Outbreaks of food-borne illness have emphasized the need for proper cooking of ground beef patties. Because of difficulties in measuring internal temperature of ground beef patties, visual indicators usually are used to estimate degree of doneness. As internal temperature increases from 130 to 170 ÌŠF, the internal appearance is expected to change from very red to brown and juice color from red to clear. Based on ground beef patties from three sources, we found that internal color over-estimated internal temperature. Expressible juice decreased in redness as internal temperature increased but did not run clear even at temperatures over 160 ÌŠF ...


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.


Ultrasound-Measured Ribeye Area Epd For Brangus Cattle, R.R. Schalles, J.B. Glaze, R. Mallen-Spinzi, K.M. Andries, C.J. Rost, M.Z. Johnson, W. Olson, Michael E. Dikeman Jan 1993

Ultrasound-Measured Ribeye Area Epd For Brangus Cattle, R.R. Schalles, J.B. Glaze, R. Mallen-Spinzi, K.M. Andries, C.J. Rost, M.Z. Johnson, W. Olson, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Ultrasound-measured ribeye area (REA) expected progeny differences (EPD) were calculated for 2974 Brangus cattle. Carcass data were collected from 168 steer progeny sired by eight bulls with ultrasound-measured ribeye area EPDs. A heritability estimate of .40 for ultrasound-measured REA and a 2.82 sq. in. range in genetic differences in ultrasound- measured REAs in this population indicate considerable opportunity to make genetic change in this trait. The regression of progeny average carcass REA on the sire's ultrasound measured ribeye area EPD indicated that for each square inch change in the EPD, the carcass REA of their progeny changed by ...


Factors Affecting Cost Of Gain Of Feedlot Steers, M. Albright, Ted C. Schroeder, Michael R. Langemeier Jan 1993

Factors Affecting Cost Of Gain Of Feedlot Steers, M. Albright, Ted C. Schroeder, Michael R. Langemeier

Kansas Agricultural Experiment Station Research Reports

This study examined the relative effects of corn price and cattle performance factors on steer finishing cost of gain. Seasonal analysis of cost of gain and the factors affecting it was also conducted. Using over 10 years of closeout data from two western Kansas feedyards, corn prices, feed conversion, and daily gain explained 93 to 94% of the variation in steer finishing cost of gain. About 60% of the variability was explained by corn price alone. Cost of gain and feed conversion rates were seasonally below average for steers placed in February through August. Daily gain was seasonally high for ...


Rate And Extent Of Losses From Top Spoilage In Alfalfa Silages Stored In Bunker Silos, D.L. Holthaus, D.R. Bonilla, L. Pfaff, D. Haverkamp, B.S. Dalke, R.N. Sonon, K. Budiongo, K.K. Bolsen, Matthew A. Young Jan 1993

Rate And Extent Of Losses From Top Spoilage In Alfalfa Silages Stored In Bunker Silos, D.L. Holthaus, D.R. Bonilla, L. Pfaff, D. Haverkamp, B.S. Dalke, R.N. Sonon, K. Budiongo, K.K. Bolsen, Matthew A. Young

Kansas Agricultural Experiment Station Research Reports

Alfalfa silages were made in pilot- and farm-scale silos, and five sealing treatments were compared. After 90 days, sealing dramatically reduced DM losses at the 5 and 10 in. depths in the farm silos and at the 0 to 12, 12 to 24, and 24 to 36 in. depths in the pilot silos. Extending the storage period to 180 days in pilot silos had no effect on DM losses for sealed or delay sealed silages, but DM losses for unsealed silages continued to increase at all three depths. Placing a roof over the unsealed, farm-scale silo increased the silage DM ...


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 ...


Preservation Of Alfalfa Hay With A Microbial Inoculant, R.K. Taylor, W.C. Mahanna, Dale A. Blasi, Thomas Mark Maxwell, James P. Shroyer Jan 1993

Preservation Of Alfalfa Hay With A Microbial Inoculant, R.K. Taylor, W.C. Mahanna, Dale A. Blasi, Thomas Mark Maxwell, James P. Shroyer

Kansas Agricultural Experiment Station Research Reports

Eleven large, round, alfalfa bales were treated with Pioneer® Brand 1155 Alfalfa Hay Inoculant and nine bales were untreated. The initial baling moistures were 14.1% (low) or 17.6% (medium). No significant differences were found in dry matter recovery or changes in acid detergent fiber, neutral detergent fiber, and acid detergent insoluble nitrogen levels during the 2-month storage period. Average temperature was highest in the medium moisture bales, but was not high enough to cause heat damage. The microbial inoculant did not improve preservation or quality of the alfalfa hay at the baling moistures used in this study.


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 ...


Value-Added Beef Processing: Increasing The Value Of Beef Shanks Using Baadertm Processing Technology, R.E. Campbell, Melvin C. Hunt Jan 1993

Value-Added Beef Processing: Increasing The Value Of Beef Shanks Using Baadertm Processing Technology, R.E. Campbell, Melvin C. Hunt

Kansas Agricultural Experiment Station Research Reports

Using a BaaderTM desinewing machine on beef shanks can increase the value of a beef carcass by $1 to $5 by improving palatability and texture and reducing fat. By varying belt pressure and drum opening size and passing shanks twice through the desinewer, we obtained commercially acceptable yields. Maximum lean yield was 93% of the shank using 5 mm drum holes for both passes. With 3 mm drum holes, very lean produced on the first pass. Using desinewed lean and flaking the sinew with an Urschel Commitrol®, we produced low-fat (10%) ground beef patties. Patties from desinewed lean alone and ...


Large Round Bale Hay Wastage By Various Feeding Methods, R.K. Taylor, G.W. Warmann, B.M. Plaschka, Dale A. Blasi, Glenn E. Newdigger Jr. Jan 1993

Large Round Bale Hay Wastage By Various Feeding Methods, R.K. Taylor, G.W. Warmann, B.M. Plaschka, Dale A. Blasi, Glenn E. Newdigger Jr.

Kansas Agricultural Experiment Station Research Reports

The amounts of wheat or hybrid sudan hay wasted with three large round bale feeding methods were evaluated at two ranch locations. The feeding methods were: 1) bale processor (Hay Forage Industries BP 25®) used to shred forage into bunks; 2) the same processor used to shred forage onto the ground; and 3) unrolling large round bales on the ground. Estimated forage wastages or refusals from unrolling, shredding onto ground, and shredding into bunks were 23, 13, and 8% with wheat hay and 22, 16, and 11% with sudan hay, respectively. These results demonstrate the potential for substantial savings of ...


Can "Natural" Flavorings Enhance The Flavor Of Low-Fat Ground Beef?, C.F. Carmack, Melvin C. Hunt, Donald H. Kropf, J.R. Schwenke, Curtis L. Kastner Jan 1993

Can "Natural" Flavorings Enhance The Flavor Of Low-Fat Ground Beef?, C.F. Carmack, Melvin C. Hunt, Donald H. Kropf, J.R. Schwenke, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

Natural flavorings were evaluated for use in low-fat ground beef, which frequently lacks flavor intensity. Three lean sources, A-maturity (young), E-maturity (mature cow), and imported (cow) beef round muscles, were used to formulate 7% and 25% fat ground beef. A-maturity fat was added to adjust fat levels. Controls (no added flavors) were prepared for each lean source. No additives were used in 25% fat controls, but 7% fat controls contained water (10%), carrageenan (.5%), and encapsulated salt (.38%). Four "natural" flavorings; Dried Cream Extract (DCE, Cumberland Packing Co., Inc.); Natural Prime Beef Base WONF #224545 and #224546 (224545, 224546, Tastemaker ...


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 ...


Effect Of Protein Concentration In Supplements And Frequency Of Supplementation On The Performance Of Beef Cows Grazing Dormant Bluestem Range, J.L. Beaty, R.C. Cochran, E.S. Vanzant, J.L. Morrill, Robert T. Brandt Jr., D.E. Johnson Jan 1993

Effect Of Protein Concentration In Supplements And Frequency Of Supplementation On The Performance Of Beef Cows Grazing Dormant Bluestem Range, J.L. Beaty, R.C. Cochran, E.S. Vanzant, J.L. Morrill, Robert T. Brandt Jr., D.E. Johnson

Kansas Agricultural Experiment Station Research Reports

One hundred twenty-eight, pregnant, Angus x Hereford cows were used to determine whether response to altering frequency of winter range supplementation depends on the protein concentration in the supplements. Supplements containing 12%, 21%, 31%, or 41% crude protein (CP) were fed either daily (7X) or three times weekly (3X). Both groups consumed 31 lbs of supplement per head weekly. Frequency of supplementation exerted only minor influences on cow performance and had no effect on calf performance. However, cows lost less body weight and condition as CP concentration in the supplement increased. In addition, calf weaning weights were improved with increasing ...


Agronomic Performance And Silage Quality Traits Of Forage Sorghum Hybrids In 1992, R.N. Sonon, B.S. Dalke, D.L. Holthaus, D.R. Bonilla, L. Pfaff, K.K. Bolsen, Matthew A. Young Jan 1993

Agronomic Performance And Silage Quality Traits Of Forage Sorghum Hybrids In 1992, R.N. Sonon, B.S. Dalke, D.L. Holthaus, D.R. Bonilla, L. Pfaff, K.K. Bolsen, Matthew A. Young

Kansas Agricultural Experiment Station Research Reports

Rainfall was much above and temperature much below normal during the 1992 growing season. Both whole-plant dry matter (DM) and grain yields were excellent for all 11 hybrids. The two short, mid-maturing, forage sorghums (Northrup King 300 and Golden Harvest H-45) had the highest silage and grain yields; the early-maturing (Cargill 200F) and male sterile (Golden Harvest H-1) forage sorghums and the grain sorghum (DeKalb DK 42Y) the lowest silage yields. A storm with high winds on October 7 and 8 caused severe lodging in all six mid- and late-maturing hybrids (earlier-maturing hybrids had already been harvested). The 10 forage ...


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.


Influence Of Frequency Of Supplementation And Protein Concentration In Supplements On Digestion Characteristics Of Beef Steers Offered Wheat Straw, J.L. Beaty, R.C. Cochran, B.A. Lintzenich, E.S. Vanzant, J.L. Morrill, Robert T. Brandt, D.E. Johnson Jan 1993

Influence Of Frequency Of Supplementation And Protein Concentration In Supplements On Digestion Characteristics Of Beef Steers Offered Wheat Straw, J.L. Beaty, R.C. Cochran, B.A. Lintzenich, E.S. Vanzant, J.L. Morrill, Robert T. Brandt, D.E. Johnson

Kansas Agricultural Experiment Station Research Reports

Eight ruminally cannulated steers were used to determine digestion characteristics of soybean meal/sorghum grain supplements containing 12%, 20%, 30%, or 39% crude protein (CP) fed either daily (7X) or three times weekly (3X). The basal forage was wheat straw. Weekly supplement intake was the same per week (30.5 lb) for both frequency groups. The effect of feeding supplements differing in protein concentration on wheat straw intake and dry matter digestibility (DMD) did not depend on frequency of supplementation. Increased frequency of supplementation resulted in greater intake of straw, although DMD was slightly depressed. Increasing protein concentration in the ...


Whole-Plant Corn, Forage Sorghum, And Grain Sorghum Silages For Growing Cattle, B.S. Dalke, R.N. Sonon, S.M. Gramlich, K.K. Bolsen Jan 1993

Whole-Plant Corn, Forage Sorghum, And Grain Sorghum Silages For Growing Cattle, B.S. Dalke, R.N. Sonon, S.M. Gramlich, K.K. Bolsen

Kansas Agricultural Experiment Station Research Reports

Agronomic and cattle performance traits were measured for eight silages produced in 1991. The silages were: irrigated Pioneer 3377 corn; dryland (early-planted) DeKalb 535 corn; irrigated and dryland DeKalb DK 42Y grain sorghum; and dryland forage sorghums Cargill 200F, Pioneer 947, Northrup King (NK) 300, and Funk's 102F. The irrigated corn and NK 300 and Funk's 102F forage sorghums had the highest whole-plant dry matter (DM) yields per acre; early-planted corn had the lowest yield. The dryland grain sorghum had the highest grain yield and the early-planted corn, the lowest. Average daily gains (ADG) were excellent for steers ...


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 ...


Effect Of Level Of Supplemental Alfalfa And Its Method Of Processing On Intake And Utilization Of Wheat Straw, B.A. Lintzenich, R.C. Cochran, E.S. Vanzant, J.L. Beaty, G. St. Jean, Robert T. Brandt, Tiruvoor G. Nagaraja Jan 1993

Effect Of Level Of Supplemental Alfalfa And Its Method Of Processing On Intake And Utilization Of Wheat Straw, B.A. Lintzenich, R.C. Cochran, E.S. Vanzant, J.L. Beaty, G. St. Jean, Robert T. Brandt, Tiruvoor G. Nagaraja

Kansas Agricultural Experiment Station Research Reports

Sixteen ruminally fistulated steers were used to study the effects of supplemental alfalfa level (.25 or 1.0% body weight [BW]) and method of processing (hay or pellets) on wheat straw utilization. Response to increased level of supplemental alfalfa did not dependent on method of processing (longstem vs pelleted) for the quality of alfalfa (22.7% CP) used in this trial. Increasing the level of alfalfa from .25 to 1.0% of BW reduced (P#.02) straw intake and diet digestibility, but increased (P<.002) digestible dry matter intake by steers. With high quality hay, ground and pelleted alfalfa elicits the same type of response as longstem alfalfa.


Effect Of Molybdenum/Sulfur-Induced Copper Deficiency Upon Enzyme Levels And Reproduction In Heifers, J.D. Arthington, L.R. Corah Jan 1993

Effect Of Molybdenum/Sulfur-Induced Copper Deficiency Upon Enzyme Levels And Reproduction In Heifers, J.D. Arthington, L.R. Corah

Kansas Agricultural Experiment Station Research Reports

To evaluate the effects of molybdenum (Mo)- and sulfur (S)- induced copper (Cu) deficiency, 99 prepubertal heifers were allotted into two groups. Treated heifers (n = 72) were fed a grass hay naturally high in Mo (Mo = 8 ppm and Cu = 3.2 ppm). Sulfur was supplemented to achieve a dietary level of .3%. Control heifers (n = 27) received a grass hay with normal levels of Mo (Mo = .47 ppm and Cu = 1.5 ppm). Copper was supplemented to achieve a dietary level of 8 ppm. Diets were fed for a period of 163 d. Liver samples were collected and analyzed ...