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Kansas Agricultural Experiment Station Research Reports

Journal

1993

Keyword

Articles 91 - 95 of 95

Full-Text Articles in Life Sciences

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

Factors Affecting Cost Of Gain Of Feedlot Steers (1993), 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 …


Results Of A Production Analysis Survey Of Cow Herds In Kansas (1993), D. Simms, Michael R. Langemeier, S. Utter, G. Fike, C. Bandyk Jan 1993

Results Of A Production Analysis Survey Of Cow Herds In Kansas (1993), D. Simms, Michael R. Langemeier, S. Utter, G. Fike, C. Bandyk

Kansas Agricultural Experiment Station Research Reports

A survey of production levels and management practices of 205 cow herds representing over 26,000 cows in Kansas was conducted in 1991. These operations were located throughout Kansas except for the Northwest corner. Emphasis was placed on determining levels of production and reproductive parameters. Breeders emphasized calf crop. For example, the average calf crop was 91.6%, with 4.3% open females and 4.4% calf death loss. Cumulative calving percentages by 21-day calving periods were 32, 55, and 68%. Average weaning weights were 550 lb. for steers and 515 lb for heifers. Additionally, information was collected on breeding, nutrition, health, and general …


Effect Of Zinpro 100® In A Mineral Mixture On Gain And Incidence Of Footrot In Steers Grazing Native Grass Pastures (1993), 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 (1993), 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.


Comparison Of Synovex-S® And Two Levels Of Revalor-S® In Heavy-Weight Holstein Steers (1993), 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 (1993), 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.


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

Sequential Implant Strategies With Synovex-S® And Trenbolone Acetate-Containing Implants In Calf-Fed Holstein Steers (1993), 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.