Cattlemen's Day, 1981

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https://hdl.handle.net/2097/6638

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Open Access
Selenium content of native bluestem pastures
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Harbers, L.H.; Sapienza, D.A.; Schwanke, L.; Kazemi, S.M.; Smith, E.F.
We used steers with esophageal cannulas to measure selenium in burned and unburned bluestem pastures between May and September. Individual variation among steers sampled varied as much as two fold in selenium content. All values were considered adequate for cattle.
Open Access
Steer gains on burned and nonburned bluestem pasture and reimplanting with Ralgro at mid-summer
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Smith, E.F.; Behnke, R.; Owensby, Clenton E.; owensby
Steers on a late spring burned bluestem pasture gained 1.4 lbs daily during the summer compared with 1.0 lb. by steers on a nonburned pasture. All steers were implanted with Ralgro at the start of the grazing season (May 1) and half in each pasture were reimplanted July 15. Reimplanting did not affect weight gain.
Open Access
Effects of Sila-bac and Silo Guard on alfalfa silage quality and corn supplementation on steer performance
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Bolsen, K.; Ilg, H.; Hinds, M.
Inoculant (Sila-bac) and enzyme (Silo Guard) silage additives were evaluated with first-cutting alfalfa silage. Control and treated silages were made in 50-ton concrete stave silos and three types of experimental silos (nylon bags buried in the stave silos, 5-ga11on plastic containers, and 55-gallon metal drums). Each silage from the stave silos was full-fed to 16 steers in individual pens. Half the steers received 2 lbs. of supplement; the other half received supplement + 2 lbs. of cracked corn. Steers fed Sila-bac and Silo Guard silages performed slightly better than those fed control silage. Adding cracked corn improved rate of gain (.37 lb./day) and feed efficiency (.71 lb. less DM/lb. of gain). Each 1.0 lb. of extra gain required 5.5 lbs. of air-dry corn.
Open Access
Sila-bac, Cold-flo, and sodium hydroxide for forage sorghum silage
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Bolsen, K.; Ilg, H.
Inoculant (Sila-bac), non-protein nitrogen (Cold-flo), and alkali (NaOH) silage additives were evaluated with whole-plant forage sorghum silage. All three additives decreased ensiling temperatures. Calves fed Sila-bec or NaOH silages gained 12.0% faster but calves fed Cold-flo silage gained 7.7% slower than those fed control silage. NaOH silage was consumed in the greatest amount; Cold-flo silage, in the least. Calves fed Sila-bec silage were more efficient than calves fed any of the other silages.
Open Access
Ensila Plus and Cold-flo additives for corn silage
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Bolsen, K.; Ilg, H.
Enzyme (Ensila Plus) and non-protein nitrogen (Cold-flo) silage additives were evaluated with whole-plant corn silage. Cold-flo increased ensiling temperatures 6 to 80 F during the first week. Growing steers fed Ensila Plus, Cold-flo, or control + SBM silage rations had similar performances, and better than steers fed a control + urea ration. Cold-flo corn silage was more stable in air than control or Ensila Plus silages. No heating or molding was observed in Cold-flo silage after 28 days of air exposure; control silage heated after 10 days; Ensila Plus after 8 days. Dry matter removed from the silos and fed was similar for control (93.3%) and Ensila Plus (94.1%) silages, but only 88.55% of the Cold-flo silage was removed and fed. When fermentation, storage, and feedout losses were combined with steer performance, one ton of control silage (supplemented with SBM) produced 2.1 lbs. more gain than one ton of Ensila Plus silage (93.7 vs. 91.6 lbs.) and 9.5 lbs. more gain than one ton of Cold-flo silage (93.7 vs. 84.2 lbs.). Control silage supplemented with urea produced 85.8 lbs. of gain per ton.
Open Access
NaOH and Ensila plus additives for wheat silage and alfalfa haylage for growing steers
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Bolsen, K.; Ilg, H.; Nuwanyakpa, M.
Enzyme (Ensila Plus) and alkali (NaOH) silage additives were evaluated with whole-plant wheat silages which were fed with or without alfalfa haylage (45% moisture). Steers fed NaOH silage consumed the most feed but were the least efficient. Although adding haylage increased feed intake, daily gain was not improved. Ensila Plus wheat silage was used 5.2% more efficiently than control wheat silage. NaOH increased ensiling temperatures by 5 to 80 C during the 4-week ensiling period. The amount of silage dry matter removed from the silos and fed was unusually low for all three wheat silages (77.6,79.4, and 77.1% for control, Ensila Plus, and NaOH silages, respectively).
Open Access
Commercial silage additive trials
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Bolsen, K.
Most Kansas grown crops can be harvested, stored, and fed as silage. A good silage fermentation should produce a well-preserved, palatable feed with minimum nutrient loss, but making a good silage requires good management. The crop must be harvested at the proper maturity and moisture, be finely chopped, and be tightly packed in the silo. Numerous commercial silage additives, whose manufacturers make various claims for improving silage quality, are available. Last year, we reported on 5 trials involving six commercial additives (Report of Progress 377). Each additive improved the silage in at least one of the four criteria we evaluate.
Open Access
Growing rations of forage sorghum silage and alfalfa haylage
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Ilg, H.; Bolsen, K.; Dikeman, Michael E.; mdikeman
Growing rations containing forage sorghum silage (FSS) or equal amounts of FSS and alfalfa haylage were fed to crossbred steer calves for 112 days. Steers consumed more of the FSS + haylage but rate and efficiency of gain were best for steers fed the FSS. We calculated the value of alfalfa haylage at various prices for FSS and soybean meal.
Open Access
Feeding MGA to grazing heifers
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Corah, L.; Brazle, F.; Davidson, Jeffrey L.
Feeding MGA to grazing heifers suppressed estrus but did not improve gain.
Open Access
The effects of Rumensin® and two levels of energy prior to calving on reproductive performance in first calf heifers
(Kansas State University. Agricultural Experiment Station, 2011-02-09) Sprott, L.R.; Corah, L.R.; Riley, Jack G.; Kiracofe, G.H.
Heifers fed low energy diets gained less before calving, took longer from calving to first estrus, and dropped lighter calves. Their conception rates were lower and fewer showed estrus the first 20 days of breeding. Rumensin lengthened the time from calving to estrus with no effect on calf birth weight, milk production, or percentage of calves weaned. However, calves from heifers fed Rumensin gained faster. Long-term Rumensin feeding to heifers (from weaning through second breeding) increased weight gain and hastened puberty with no effect on reproductive performance. Rumensin-fed dams tended to wean heavier calves.
Open Access
Effect of Rumensin on the growth and sexual development of beef bulls
(Kansas State University. Agricultural Experiment Station, 2011-02-08) Corah, L.R.; Busby, W.D.; McKee, R.M.; Kiracofe, G.H.
Fifty percentage Simmental bull calves were fed either with or without Rumensin. Although Rumensin improved gain by 9.2%, it had no effect on sexual development.
Open Access
Four ear tags evaluated
(Kansas State University. Agricultural Experiment Station, 2011-02-08) Sprott, L.R.; Corah, L.R.
Four types of ear tags were evaluated for retention over 2 years. Retention was low for one type, and high for the other three types.
Open Access
The effects of stocking rate and level of winter supplementation on pregnancy rates in spring calving cows in the Kansas Flint Hills
(Kansas State University. Agricultural Experiment Station, 2011-02-08) Sprott, L.R.; Corah, L.R.; Kiracofe, G.H.; Owensby, Clenton E.; owensby
Pregnancy rates the first 40 days of breeding were lower in cows stocked at less than 6 acres/AU than in those allowed more grazing acres. Supplementation rate during the last 100 days of gestation had little effect on pregnancy rates. Thin cows that had weaned their firs calf had lowest pregnancy rates.
Open Access
Use of Kamar® heatmount detectors in beef cattle synchronized with Lutalyse®
(Kansas State University. Agricultural Experiment Station, 2011-02-08) Kiracofe, G.H.; Heekin, M.; Odde, Kenneth G.; King, M.; kenodde
The ability of the Kamar Heatmount Detector to identify cows ready for insemination 80 hours after two Lutalyse injections was tested with 439 beef cows and heifers. The detector was placed on the rump at the second injection and was “read” at insemination. Conception rate from the 80-hour timed insemination for cows with red (activated) and lost detectors was 56.5% compared with 7.6% of the cows with white detectors.
Open Access
Effects of weaning weight on reproductive performance in beef heifers
(Kansas State University. Agricultural Experiment Station, 2011-02-08) Sprott, L.R.; Corah, L.R.; Kiracofe, G.H.
Fertility during the first two breeding seasons was not affected by the dam's weaning weight, but lightest heifers at weaning reached puberty later, had smaller pelvic areas at calving, more difficult deliveries, had more calves die, and weaned a smaller percentage of their calves.
Open Access
Effect of limited suckling on reproductive performance and milk production of cows and weight gains and suckling behavior of calves
(Kansas State University. Agricultural Experiment Station, 2011-02-08) Odde, Kenneth G.; Kiracofe, G.H.; Schalles, R.R.; kenodde
We used 109 Polled Hereford and percentage Simmental cows to evaluate limited suckling as an aid to induce cows to cycle after calving. Cows were allotted to: 1. once daily suckle; 2. twice daily suckle; 3. 48 hr calf removal (just before breeding season); and 4. controls (suckle ad libitum). Half of each group was implanted with Norgestomet 9 days before the breeding season. Limited suckling increased the number of cows showing estrus and conceiving early in the breeding season, and Norgestomet increased the percentage pregnant the first 21 days of the breeding season.
Open Access
Factors affecting conception after synchronization with Lutalyse® and timed insemination
(Kansas State University. Agricultural Experiment Station, 2011-02-08) King, M.; Kiracofe, G.H.; McKee, R.M.
With heifers given two injections of Lutalyse 11 days apart, and inseminated 80 hours after the second injection, only 20% in heat before 48 hours conceived compared with 65% that were in heat 48 to 80 hours after injection. Those showing heat early may have been inseminated too late. Heifers receiving their second injection on day 7. 8, or 9 of the cycle came into heat earlier than those injected on days 10 through 15.
Open Access
Continuous versus intermittent electrical stimulation of beef carcasses and their effect on hot-boned Muscle-pH decline
(Kansas State University. Agricultural Experiment Station, 2011-02-08) Bowles, J.E.; Hunt, Melvin C.; Kendall, J.L.A.; Lyon, M.; Kastner, Curtis L.; Dikeman, Michael E.; ckastner; mdikeman
Short bursts of electricity (intermittent electrical stimulation) to beef carcasses accelerated pH decline and the onset of rigor mortis more than continuous stimulation did.
Open Access
Effects of dressing procedures upon yield and quality of the beef tenderloin
(Kansas State University. Agricultural Experiment Station, 2011-02-08) De Felicio, P.E.; Allen, Dell M.; Kastner, Curtis L.; ckastner
Removing kidney fat at slaughter did not affect (P>.05) the chilled or chilled-and-aged weights of the tenderloin. But small differences in tenderness and color at the beginning of the display period favored the conventional dressing procedure.
Open Access
Nutritional effects of beef connective tissue characteristics and eating qualities
(Kansas State University. Agricultural Experiment Station, 2011-02-08) Wu, J.J.; Hunt, Melvin C.; Kropf, Donald H.; Allen, Dell M.; Kastner, Curtis L.; ckastner
We compared taste panel and connective tissue characteristics of beef fed a high energy diet with beef fed grass. The high energy diet produced higher USDA quality and yield grades, more rapid weight gain, and increased connective tissue collagen synthesis arid breakdown. But, it did not consistently improve taste panel and shear characteristics over grass-feeding.