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Articles 5251 - 5280 of 5550

Full-Text Articles in Life Sciences

Iron Dextran And Farbegen Compared As Methods Of Preventing Iron Deficiency Anemia In Neonatal Pigs (1977), D A. Schoneweis, G L. Allee Jan 1977

Iron Dextran And Farbegen Compared As Methods Of Preventing Iron Deficiency Anemia In Neonatal Pigs (1977), D A. Schoneweis, G L. Allee

Kansas Agricultural Experiment Station Research Reports

The experiment suggests that a primary need of the neonatal pig is iron and that hematinics such as cobalt and liver extract are of little value if iron is insufficient.; Swine Day, Manhattan, KS, November 10, 1977


Calcium Phosphorus Levels For Developing Boars (1977), J G. Greer, Duane L. Davis, Robert H. Hines Jan 1977

Calcium Phosphorus Levels For Developing Boars (1977), J G. Greer, Duane L. Davis, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Forty-two boars averaging 67 lbs. were used to study how various levels of calcium and phosphorus in their feed affected their development. Calcium-to phosphorus ratios of 1.2 to 1 were maintained in all treatment diets, which ranged from a low of .55% calcium and .45% phosphorus to a high of 1.30% calcium and 1.05% phosphorus. Seven treatment groups were replicated three times. No significant differences were observed for average daily gain, feed efficiency, carcass length, and backfat. Based on this trial, it appears that 0.55% calcium and 0.45% phosphorus is adequate for optimum growth of developing boars.; Swine Day, Manhattan, …


Restricting Energy Intake Of Gestating Sows With 50% Alfalfa Meal Ration (1977), G L. Allee, B A. Koch, Robert H. Hines Jan 1977

Restricting Energy Intake Of Gestating Sows With 50% Alfalfa Meal Ration (1977), G L. Allee, B A. Koch, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Gestating Yorkshire sows and gilts were randomly assigned to two dietary treatments immediately after a 25-day breeding season until females were brought to the farrowing house between 105-110th day of gestation. Sows and gilts fed the 50% alfalfa meal ration performed similarly to those fed the basal ration in regard to number of pigs farrowed, pigs weaned, and weights at birth, 14 and 28 days. The reduced caloric intake by sows fed 50% alfalfa meal was not detrimental to farrowing or reproductive performance.; Swine Day, Manhattan, KS, November 10, 1977


Induced Calving In Beef Cattle, V. Hultine, G.H. Kiracofe, R.R. Schalles, R.M. Mckee, R.C. Debenedetti Jan 1977

Induced Calving In Beef Cattle, V. Hultine, G.H. Kiracofe, R.R. Schalles, R.M. Mckee, R.C. Debenedetti

Kansas Agricultural Experiment Station Research Reports

Calving was induced in 26 of 29 Polled Hereford cows that were injected between 271 and 287 days of gestation intramuscularly with 20 mgs. Of dexamethasone (Azium) and 10 mgs. ECP (estradiol cypionate). Oxytocin, give to cows that had not calved by 40 hours after dexamthasone injection, shortened the average interval to calving (15.4 hours if returned to pasture, 16.1 if in confinement compared with 32.6 hours with no oxytocin). Three cows did not respond to treatment. ECP did not reduce retained placentas; 77% of the cows induced to calve retained membranes.


Early Weaning And Creep Feeding Calves In Drylot, K. Kimple, M. Mckee, G. Fink, K. Conway Jan 1977

Early Weaning And Creep Feeding Calves In Drylot, K. Kimple, M. Mckee, G. Fink, K. Conway

Kansas Agricultural Experiment Station Research Reports

Performances of 125 commercial Hereford-cross and percentage Simmental calves were evaluated by comparing early weaning at 50 days of age (+25), nursing calves receiving a creep in drylot, and calves nursing in drylot without creep. Both a starter and growing creep were tested. Early weaned calves gained more (261 lbs., 299 lbs.) than either creep fed (251 lbs., 277 lbs.) or noncreep fed (107 lbs., 125 lbs.) calves during the 107-day trial. The best combined energy efficiency of dam and calf was for the early weaned group, and dams of early weaned calves began cycling sooner in the breeding season.


Forage And Grain Yields Of Barley, Wheat And Oats, K. Bolsen, W. Moore Jan 1977

Forage And Grain Yields Of Barley, Wheat And Oats, K. Bolsen, W. Moore

Kansas Agricultural Experiment Station Research Reports

Interest in small cereal grain silages for beef cattle has increased in recent years. Two years' research at this station (Prog. Rpt. 262) has shown: (1) winter barley and winter wheat had similar forage yields and (2) forage yields were highest in the dough stage of plant growth and lowest in the boot stage. In this trial, we continued to measure effects of type and variety of cereal grain on forage and grain yields.


Forage And Grain Sorghum Double-Cropped Following Harvest Of Small Grain Silages, Gerry L. Posler, K. Bolsen Jan 1977

Forage And Grain Sorghum Double-Cropped Following Harvest Of Small Grain Silages, Gerry L. Posler, K. Bolsen

Kansas Agricultural Experiment Station Research Reports

The attempt to increase total forage TDN per acre by double-cropping was only moderately successful in 1975 and 1976. Limiting factors were relatively poor stands and extremely dry summer growing seasons.


Feeding Monensin To Yearling Cattle On Summer Grass, F. Schwartz, E. Smith, Jack G. Riley, L. Corah Jan 1977

Feeding Monensin To Yearling Cattle On Summer Grass, F. Schwartz, E. Smith, Jack G. Riley, L. Corah

Kansas Agricultural Experiment Station Research Reports

Two grazing trials conducted at different locations in Kansas evaluated feeding Monensin to grazing yearling cattle. In one trial Monensin was fed with and without implant treatments of diethylstilbestrol or Ralgro. Monensin increased weight gain on summer grass; diethylstilbestrol and Ralgro implants also increased weight gains, and the combination of Monensin with either implant was more effective than Monensin alone.


Large-Package And Ensiled Milo Stover For Maintaining Pregnant Cows, K. Kimple, M. Mckee, G. Fink Jan 1977

Large-Package And Ensiled Milo Stover For Maintaining Pregnant Cows, K. Kimple, M. Mckee, G. Fink

Kansas Agricultural Experiment Station Research Reports

One hundred-two mature Simmental and Hereford cows in mid to late gestation were used to compare three maintenance rations during an 83-day trial: (1) milo stover silage, (2) large package milo stover (stacks and bales), and (3) forage sorghum silage. Each breed was represented by a pen of 17 cows in each of the forage groups. Cows fed forage sorghum silage gained significantly more than cows on other rations. Cows receiving milo stover silage lost heavily early because amounts were inadequate. They gained when stover silage was increased. Cows fed ad libitum on dry milo stover lost weight during the …


A New Tool For Evaluating Forages, L.H. Harbers, F.K. Brazle, Clenton E. Owensby Jan 1977

A New Tool For Evaluating Forages, L.H. Harbers, F.K. Brazle, Clenton E. Owensby

Kansas Agricultural Experiment Station Research Reports

The scanning electron microscope has been used to observe the digestion of alfalfa hay and warm- and cool-season grasses. Photomicrographs show that leaves of all species are digested by bacteria and protozoa attacking either the upper part of the leaf or exposed edges; lower leaf surfaces are never attacked. Intake of a forage depends on how rapidly rumen bacteria and protozoa can enter the upper leaf surface and digest underlying material (mesophyll) leaving most of the highly lignified nutrient-carrying vessels (vascular tissue) undigested.


Micronized Corn And Urea-Liquid Supplements In Growing Rations For Calves, K. Bolsen, Leslie J. Chyba, W. Ibbetson Jan 1977

Micronized Corn And Urea-Liquid Supplements In Growing Rations For Calves, K. Bolsen, Leslie J. Chyba, W. Ibbetson

Kansas Agricultural Experiment Station Research Reports

In growing rations containing fescue hay, micronized corn + urea-liquid gave: (1) 20.5% faster gains and 11.5% more efficient gains than cracked corn + urea-liquid and (2) similar rate and efficiency of gains as cracked corn + soybean meal.


Operational Procedures Of Kansas Feedyards, L. Koons, Jack G. Riley Jan 1977

Operational Procedures Of Kansas Feedyards, L. Koons, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Twenty-four Kansas feedyards with 432,000 head capacity participated in a survey on operation procedures. The survey covered five areas: processing, animal health, rations, facilities, and marketing. Methods differed most in processing and starter-ration ingredients.


Value Of Sprinkling Feedlot Cattle During Heat, D.R. Ames, C. Willms Jan 1977

Value Of Sprinkling Feedlot Cattle During Heat, D.R. Ames, C. Willms

Kansas Agricultural Experiment Station Research Reports

Four lots of growing-finishing cattle were sprinkled when dry bulb temperature exceeded 80 F the summer of 1976 and compared with lots not sprinkled. Sprinkled lots gained significantly (P<.01) more (1.20 kg per day compared with 1.04) (2.64 vs. 2.29 lbs.) than controls. Sprinkling also improved feed efficiency (F/G).


Antibiotics - Yes Or No? (1977), J E. Mosier Jan 1977

Antibiotics - Yes Or No? (1977), J E. Mosier

Kansas Agricultural Experiment Station Research Reports

From January, 1976, to January, 1977, I served as chairman of a subcommittee of the National Advisory Food &Drug Consultants charged with examining several issues concerned with the "Use of Antibiotics in Animal Feeds". It was through the activities of this subcommittee that I have had the opportunity to review papers and to hear presentations and discussions by many knowledgeable people concerning such use. Most of you are fully cognizant that the use of antibiotics in animal feeds originated from the observations of Jukes and Stokstad in 1949. Subtherapeutic levels are used for increasing weight gain, improving feed efficiency, and …


Sources Of Supplemental Protein For Cows Wintered On Milo Stubble, M. Mckee, K. Kimple, K. Conway Jan 1977

Sources Of Supplemental Protein For Cows Wintered On Milo Stubble, M. Mckee, K. Kimple, K. Conway

Kansas Agricultural Experiment Station Research Reports

We used 63 pregnant Hereford cows in mid gestation to evaluate need and source of supplemental protein on milo stubble. Cows fed free choice a 16% experimental nonprotein-nitrogen-based liquid supplement lost significantly more weight than cows receiving 2 lbs/head/day of a 16% natural protein cube or cows getting no protein supplement. Cows with access free choice to an 18% commercial nonprotein-nitrogen-based liquid supplement lost significantly more than cows receiving 2 lbs/head/day of 16% natural protein cube.


Testosterone-Treated Cows To Aid In Heat Detection, G.N. Laaser, G.H. Kiracofe Jan 1977

Testosterone-Treated Cows To Aid In Heat Detection, G.N. Laaser, G.H. Kiracofe

Kansas Agricultural Experiment Station Research Reports

Eight cull Hereford cows were given 200-mg. injections of testosterone proprionate repository (Haver-Lockhart, Shawnee, KS) every other day for 20 days (10 injections). Four cows were given weekly booster injections with the same testosterone proprionate; the other four were injected every three weeks with testosterone enanthate (sigma Chemical Co., St. Lois, MO.). Each cow was equipped with a chin-ball marker and each was used to detect heat in other cows. The detection period lasted approximately 45 days. Testosterone-treated cows served satisfactorily as heat detectors; those given boosters of testosterone proprionate marked more cows in heat than those given testosterone enanthate.


Micronized Milo, Urea And Prairie Hay For Growing Beef Heifers, K. Bolsen, J. Oltjen, Jack G. Riley Jan 1977

Micronized Milo, Urea And Prairie Hay For Growing Beef Heifers, K. Bolsen, J. Oltjen, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Twenty-four individually fed heifers were used 1n two heifer trials to evaluate four combinations of micronized or dry-rolled milo and soybean meal or urea supplements 1n prairie hay growing rations. Feeding 4 to 5 lbs. of micronized milo produced an average of 17% faster and 16% more efficient gains than feeding 4 to 5 lbs. of dry-rolled milo.


Effect Of Monensin On Performance Of Finishing Steers, D. Tobyne, G. Fink, Jack G. Riley Jan 1977

Effect Of Monensin On Performance Of Finishing Steers, D. Tobyne, G. Fink, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

We used 72 Hereford and Hereford x Angus cross yearling steers to further evaluate 200 mg Monensin (trade name Rumensin) per head daily. Monensin improved gain 6.7% and significantly improved efficiency, 12.3%.


Iron Dextran And Iron Dextran-Gentamycin Combined, Compared As Methods Of Preventing Iron-Deficiency Anemia In Neonatal Pigs (1977), D A. Schoneweis, G L. Allee Jan 1977

Iron Dextran And Iron Dextran-Gentamycin Combined, Compared As Methods Of Preventing Iron-Deficiency Anemia In Neonatal Pigs (1977), D A. Schoneweis, G L. Allee

Kansas Agricultural Experiment Station Research Reports

Giving an iron iron dextran-gentamycin combination to young pigs had no advantages over giving them iron dextran alone, as measured by hemoglobin levels, packed cell volumes, or weight (when 28 days old).; Swine Day, Manhattan, KS, November 10, 1977


Efficacy Of Iron Proteinate Fed To Sows In Meeting The Iron Needs Of Baby Pigs (1977), D A. Schoneweis, G L. Allee Jan 1977

Efficacy Of Iron Proteinate Fed To Sows In Meeting The Iron Needs Of Baby Pigs (1977), D A. Schoneweis, G L. Allee

Kansas Agricultural Experiment Station Research Reports

Two trials involving 33 litters of pigs and more than 1,300 blood samples demonstrated that feeding iron proteinate (250 PPM) to the sows during the last one-third of gestation and lactation is not an effective way to supply the iron needs of baby pigs if they have limited access to the sows' fecal material.; Swine Day, Manhattan, KS, November 10, 1977


Performance Of Young Pigs As Affected By Energy Density Of And Method Of Adding Fat To Rations (1977), G L. Allee Jan 1977

Performance Of Young Pigs As Affected By Energy Density Of And Method Of Adding Fat To Rations (1977), G L. Allee

Kansas Agricultural Experiment Station Research Reports

One hundred twenty-six crossbred pigs averaging 11.7 kg. (25.7 lbs.) were used to determine the effects of energy density (added fat or fiber) and calorie-protein, calorie-lysine, and calorie-nutrient ratios of rations on pig performance. The basal sorghum-soybean meal ration contained 16.0% crude protein, 0.80% lysine, 0.70% calcium, and 0.60% phosphorus. Soybean oil was the fat source and cellulose the fiber source. Adding 6% fat and maintaining a constant calorie-lysine, calorie-protein, or calorie-nutrient ratio increased (P<.05) average daily gain and improved (P<.05) feed efficiency, compared with gain and efficiency of pigs fed the basal ration. Pigs fed rations containing 6% fiber had similar average daily gain and feed efficiency as did pigs feed the basal ration.; Swine Day, Manhattan, KS, November 10, 1977


Effect Of Using One Versus Two Growth Promoting Implants On The Gains Of Nursing Calves, L.R. Corah, M. Mckee, R.R. Schalles Jan 1977

Effect Of Using One Versus Two Growth Promoting Implants On The Gains Of Nursing Calves, L.R. Corah, M. Mckee, R.R. Schalles

Kansas Agricultural Experiment Station Research Reports

One hundred twenty-seven suckling calves were allotted to one of three treatments: (1) Control group - not implanted (2) Implanted (Ralgro) once during sucking period (3) Implanted (Ralgro) twice during sucking period - at average age of 44 days and 70 days later Using one Ralgro implant improved the weight at weaning by 8.4 pounds, while re-implanting, thus utilizing two implants during the suckling phase, resulted in an extra 43.0 pounds.


Effect Of Feeding Rumensin During The Growing Phase On Subsequent Reproductive Performance Of Yearling Heifers, L. Corah, K. Bolsen, M. Mckee, Jack G. Riley Jan 1977

Effect Of Feeding Rumensin During The Growing Phase On Subsequent Reproductive Performance Of Yearling Heifers, L. Corah, K. Bolsen, M. Mckee, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Seventy five purebred heifers were used to determine whether Monensin, (trade name Rumensin) fed during the initial growing period after weaning, would affect the reproductive performance of yearling heifers. Rumensin had virtually no effect on reproductive performance as determined by the percentage of heifers cycling at the start of the breeding season or the percentage of heifers that conceived at first service and during the breeding season. A slightly higher percentage of the Rumensin fed heifers were cycling at the start of the breeding season. Although the study shows that replacement heifers on roughage rations can successfully be fed Rumensin, …


Protein Adjustments In Heat Stressed Finishing Cattle, D.R. Ames, C.L. Willms Jan 1977

Protein Adjustments In Heat Stressed Finishing Cattle, D.R. Ames, C.L. Willms

Kansas Agricultural Experiment Station Research Reports

A summer feedlot trial indicates that protein can be removed from finishing rations in proportion to magnitude of heat stress without causing a decline in average daily lain. Cattle consumed .13 kg/hd/day (.30 lb) less supplemental protein soybean oil meal) during the 82-day period with no decline in average daily gain when compared to controls.


Inducing Puberty In Beef Heifers With Hormones, R. Debenedetti, G.H. Kiracofe, V. Hultine, R.M. Mckee, R.R. Schalles Jan 1976

Inducing Puberty In Beef Heifers With Hormones, R. Debenedetti, G.H. Kiracofe, V. Hultine, R.M. Mckee, R.R. Schalles

Kansas Agricultural Experiment Station Research Reports

Twenty-six Polled Hereford and Simmental-cross heifers that had not cycled by the beginning of the breeding season were given an ear implant and injected with an estrogen-progestogen compound. The implant was removed after 9 days and all heifers were in estrus 1 to 5 days later. Six heifers conceived the first insemination, 11 the second, and 24 during the 65-day breeding season.


Synchronizing Estrus In Beef Heifers With Prostaglandin And Syncromate B, R.C. Debenedetti, G.H. Kiracofe, V. Hultine, R.M. Mckee, R.R. Schalles Jan 1976

Synchronizing Estrus In Beef Heifers With Prostaglandin And Syncromate B, R.C. Debenedetti, G.H. Kiracofe, V. Hultine, R.M. Mckee, R.R. Schalles

Kansas Agricultural Experiment Station Research Reports

Forty-five of 50 heifers were in estrus 1 to 5 days after 7-day synchronization implants were removed. Prostaglandin was injected one day before implants were removed. Thirty-one of the 45 (68.9%) heifers conceived to first artificial insemination service.


Inheritance Of Some Reproductive Traits By Young Bulls, J.H. Warren, J. Blum, R.R. Schalles, G. Kiracofe, K. Henry, V. Hultine Jan 1976

Inheritance Of Some Reproductive Traits By Young Bulls, J.H. Warren, J. Blum, R.R. Schalles, G. Kiracofe, K. Henry, V. Hultine

Kansas Agricultural Experiment Station Research Reports

Severa1 reproductive traits of yearling Polled Hereford bulls were evaluated during and immediately after a 140-day feeding test. Results indicate that concentration of sperm and percentages of live sperm are heritable and genetically independent of each other. Heritability was low for sex drive or libido.


Feeding Propionic Acid-Treated, Flaked Sorghum To Finishing Steers, Terry L. Gugle, G. Fink, Jack G. Riley Jan 1976

Feeding Propionic Acid-Treated, Flaked Sorghum To Finishing Steers, Terry L. Gugle, G. Fink, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Fifty-four yearling Hereford steers averaging 805 pounds were used in an 86-day finishing trial to determine the effect of adding low levels of propionic acid to steam flaked sorghum grain. Three treatments were examined. Treatment one consisted of sorghum grain steam flaked twice weekly for a maximum of 4 days between flaking. Treatment two was the same as treatment 1 except that propionic acid was added into the discharge auger at 0.15% of the weight of the flakes. Treatment three was flaking once a week with propionic acid added at 0.25% of the weight of the flakes. Both acid levels …


Adjusting Protein In Cattle Rations During Cold Weather, D.R. Ames Jan 1976

Adjusting Protein In Cattle Rations During Cold Weather, D.R. Ames

Kansas Agricultural Experiment Station Research Reports

Two winter trials have indicated that protein can be removed from growing rations during cold weather without lowering average daily gain. Cattle consumed 0.29 and 0.33 lb/hd/da (0.11 and 0.15 kg/hd/da) less protein supplement (soybean oil meal) during winters 1975 and 1976, respectively.


Factors Influencing Net Income From A Steer Through Feedlot, J.K. Blum, R.R. Schalles, K.O. Zoellner Jan 1976

Factors Influencing Net Income From A Steer Through Feedlot, J.K. Blum, R.R. Schalles, K.O. Zoellner

Kansas Agricultural Experiment Station Research Reports

Steers entering feedlots with higher starting weight per day of age had greater net value a t slaughter than lighter steers. Faster gaining steers brought the highest net income. Age on feed did not influence net income. High dressing percentage increased the net income but generally the relationship was low between carcass traits and net income.