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Feedlot performance and carcass traits of serially slaughtered finishing heifers

Two experiments were conducted at the KSU Agricultural Research Southeast Agricultural Research Center Center, Hays, Kansas, to measure feedlot gain and carcass traits of serially slaughtered, yearling crossbred heifers. In Exp. 1, 159 heifers averaging 792 lbs were randomly assigned to one of four slaughter groups, and slaughtered at 21-day intervals beginning at 92 days on feed...

Effect of castration time on feedlot performance, carcass characteristics, and beef tenderness

Crossbred Angus calves (n=120) were randomly assigned to early-castrated, early-castrated plus implant, and late-castrated treatment groups. After weaning, calves were placed on feed at the Western Kansas Agricultural Research Southeast Agricultural Research Center Station in Hays, Kansas, for finishing. On-feed weights and final weights were similar among treatments. During the...

Effects of pregnancy in feedlot heifers on performance and carcass characteristics

Sixty-eight, spring-born, yearling heifers were raised, estrous synchronized, artificially inseminated once, and then finished at the Kansas State University Western Kansas Agricultural Research Southeast Agricultural Research Center Center at Hays to determine the effects of pregnancy status on feedlot performance and carcass traits. To achieve a common endpoint at slaughter...

Effects of vaccinating beef dams precalving and calves preweaning with a Pasteurella haemolytica vaccine

, T.T. Marston, Gerald L. Stokka, J.R. Brethour, and Timothy G. Rozell This Research Report article is available in Kansas Agricultural Experiment Station Research Reports: http://newprairiepress.org

Performance and carcass characteristics of cull beef cows implanted with growth promotants and fed a high concentrate ration

Open, cull beef cows fed a high concentrate ration for 28 or 56 days and implanted with Finaplix-H®, Synovex-H®, or both had improved gain and feed efficiency compared to controls (nonimplanted cows). Changes in ultrasound-measured backfat (12th rib) of implanted cows and controls were similar in both feeding periods. Marbling, fat color, and tenderness, as measured by Warner...

Performance, carcass, and meat palatability traits of open and 30-month old heifers that produced one calf

Eighty-seven 3/8 Simmental x 5/8 Hereford heifers calved at 2 years of age and were designated as Single-Calf-Heifers (SCH). Twenty-six heifer mates that did not calve were designated as 2-year-old open heifers (2-OH), and 22, 1 year-old open heifers (1-OH) from the same source served as controls. All heifer groups were fed a high-grain diet for 112 to 137 days before slaughter...

Effect of hay quality and breed on the onset of puberty and subsequent reproductive performance in beef heifers

The effect of hay quality on the onset of puberty and subsequent reproductive performance was evaluated in 51 3/4 Hereford x 1/4 Angus (HA) heifers and 47 3/4 Hereford x 1/4 Brahman (HB) heifers. Two qualities of alfalfa hay were fed ad libitum. along with an average of 3.1 lbs/hd/day of ground sorghum grain. HB heifers were heavier and carrying more backfat and body condition (P...

Comparison of feedlot performance of steer calves produced by Angus x Hereford and Brahman x Hereford cows

Steer calves that were 75 percent Hereford and either 25 percent Angus (BWF) or Brahman (BRX) were compared in a feedlot study that involved either high-concentrate or high-silage finishing rations. The BRX steers gained significantly faster, but there was no concomitant response in feed efficiency. The ration energy utilization by BRX steers appeared to be less than that of BWF...

Adding fat and/or sodium bicarbonate to steer finishing rations that contain wheat

Adding .6 pound fat or .22 pound sodium bicarbonate (soda) to finishing rations containing rolled wheat significantly improved performance and appeared to increase the substitution value of wheat. Both fat and soda increased feed intake. The improved gains from adding fat corresponded to increased energy intake. However, soda seemed to enhance nutrient utilization. There was more...

Relationship of age at puberty and postpartum interval to estrus in Angus x Hereford and Brahman x Hereford Females

Records of age at puberty (AAP) and postpartum interval to estrus (PPI) for heifers calving first at 2 years of age were used to determine the relationship between the two reproductive parameters. In Brahman x Hereford (BxH) females, there was no relationship between AAP and PPJ. In Angus x Hereford (AxH) females, PPI increased as AAP decreased. The data suggest that heifers...

Calving and reproductive performance of Angus x Hereford and Brahman x Hereford heifers fed to prebreeding target weights

The effect of heifer development on first calving and subsequent reproductive performance was evaluated in Angus x Hereford (AxH) and Brahman x Hereford (BxH) females. Heifers were fed to reach either 55% or 65% of their projected mature body weight by the start of their first breeding season. After breeding, the heifers were managed as a typical commercial range beef cow herd...

Effects of MGA and PGF on estrus induction and synchronization in cows and heifers

Three trials were conducted in the spring of 1985 to evaluate the effectiveness of MGA feeding and Prostaglandin (PGF) injection on estrus induction and synchronization. Trials 1 and 2 were both done on a Kansas ranch and involved 70 heifers and 86 cows, respectively. In both trials, all cycling and non-cycling females were fed MGA (7 days in trial 1, 9 days in trial 2) and half...

Reproductive performance of Angus x Hereford and Brahman x Hereford heifers fed to prebeeding target weights

than those on the low-energy diet. Creative Commons License This work is licensed under a Creative Commons Attribution 4.0 License. Authors D.J. Patterson, L.R. Corah, D.D. Simms, J.R. Brethour, and

Follicular development and reproductive hormone changes during postpartum anestrus in suckled beef cows

Commons Attribution 4.0 License. Authors R.C. Perry, L.R. Corah, W.E. Beal, G.H. Kiracofe, J. Ernest Minton, R.C. Cochran, J.R. Brethour, and Jeffrey S. Stevenson This Research Report article is

Effects of dietary energy on reproductive function and production in suckled beef cows

Commons License This work is licensed under a Creative Commons Attribution 4.0 License. Authors R.C. Perry, L.R. Corah, W.E. Beal, G.H. Kiracofe, R.C. Cochran, D.D. Simms, J.R. Brethour, and Jeffrey S