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Other Animal Sciences

Kansas State University Libraries

Kansas Agricultural Experiment Station Research Reports

1993

Keyword

Articles 91 - 95 of 95

Full-Text Articles in Life Sciences

Effect Of Zinpro 100® In A Mineral Mixture On Gain And Incidence Of Footrot In Steers Grazing Native Grass Pastures, F.K. Brazle Jan 1993

Effect Of Zinpro 100® In A Mineral Mixture On Gain And Incidence Of Footrot In Steers Grazing Native Grass Pastures, F.K. Brazle

Kansas Agricultural Experiment Station Research Reports

In a 3-year study, crossbred steers averaging 585 lb were allotted to groups given either a control or zinc methionine-supplemented mineral mixture while grazing burned native pastures in early summer. The steers were monitored for weight gain and incidence of footrot. The addition of 100 lb Zinpro 100® (50% zinc methionine) per ton of free-choice mineral mixture improved (P<.06) steer daily gain .08 lb. and reduced the incidence of footrot 55% (5.38 vs. 2.45%; P<.06). The gain benefit could not be attributed entirely to reduced footrot, but appeared to also have a nutritional basis.

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Comparison Of Synovex-S® And Two Levels Of Revalor-S® In Heavy-Weight Holstein Steers, Gerry L. Kuhl, D.D. Simms, Dale A. Blasi, Curtis L. Kastner Jan 1993

Comparison Of Synovex-S® And Two Levels Of Revalor-S® In Heavy-Weight Holstein Steers, Gerry L. Kuhl, D.D. Simms, Dale A. Blasi, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

In two field trials, 434 Holstein steers averaging 849 lbs were assigned randomly to three single implant treatments: 1) Synovex- S®, 2) Revalor®-S 120 (120 mg trenbolone acetate (TBA) + 24 mg estradiol), and 3) Revalor®-S 140 (140 mg TBA + 28 mg estradiol). Revalor-implanted steers gained .05 to .10 lb per day faster, but this improvement was not statistically significant (P>.05). Both Revalor-implanted groups produced trimmer carcasses with less (P<.05) backfat than Synovex steers. All other carcass characteristics and beef sensory properties, including taste panel evaluations of tenderness, juiciness, and flavor, were not influenced by implant used.

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Sequential Implant Strategies With Synovex-S® And Trenbolone Acetate-Containing Implants In Calf-Fed Holstein Steers, D.D. Simms, Gerry L. Kuhl Jan 1993

Sequential Implant Strategies With Synovex-S® And Trenbolone Acetate-Containing Implants In Calf-Fed Holstein Steers, D.D. Simms, Gerry L. Kuhl

Kansas Agricultural Experiment Station Research Reports

In a commercial feedyard trial, 242 Holstein steer calves averaging 378 lb were used to compare effects of six alternative implant programs, consisting of sequential use of Synovex-S® or a combination of estradiol and trenbolone acetate (Revalor-S® or Finaplix- S® plus Synovex-S®), on feedlot performance and carcass characteristics. The calves were implanted three times at 78- to 90-day intervals while on feed an average of 252 days. The combination implant increased (P<.05) gain by .13 to .21 lb per day in all three implant periods compared to Synovex alone. Total feedlot gain was increased in direct relation to the number of times steers received the combination implant. However, marbling score and the percentage of carcasses grading USDA Choice tended to be reduced with repeated use of Revalor or Finaplix.

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Effect Of Mass Medication On The Health And Gain Of Calves In Grass Paddocks Or Feedlot Pens, F.K. Brazle Jan 1993

Effect Of Mass Medication On The Health And Gain Of Calves In Grass Paddocks Or Feedlot Pens, F.K. Brazle

Kansas Agricultural Experiment Station Research Reports

Four hundred and ninety mixed-breed, long-hauled, bull calves averaging 275 lb were used in a winter study to determine whether mass medicating calves in grass paddocks or feedlot pens would reduce health problems and improve performance. All calves were started in feedlot pens for 3 days, then half of the calves were turned out into grass paddocks. Mass medication with injectable oxytetracycline did not improve health or gain of the calves. Calves housed in grass paddocks during the recurring period had less sickness (P<.01), fewer (P<.05) sick days per animal purchased, and lower (P<.05) drug treatment costs than their counterparts housed in feedlot pens.

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Management Of Stable Flies In Cattle Feedlots With Releases Of Parasitic Wasps, G.L. Greene, J.E. Cilek Jan 1993

Management Of Stable Flies In Cattle Feedlots With Releases Of Parasitic Wasps, G.L. Greene, J.E. Cilek

Kansas Agricultural Experiment Station Research Reports

During 1992, adult stable fly populations were sampled in 25 Kansas feedlots. A native stable fly parasitic wasp, Spalangia nigroaenea, was released in 19 of these feedlots. Stable fly populations were reduced up to 48% and parasite emergence was increased 21% when compared with feedlots where S. nigroaenea was not released. The percentage of total parasites that were S. nigroaenea nearly doubled in the release feedlots, compared to the nonrelease feedlots. This parasitic wasp has shown considerable promise for stable fly control in cattle feedlots. Overall, sampling and parasite costs averaged 32 cents per animal for the season.

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