152 research outputs found
Insecticide ear tags numerically improve grazing cattle performance
Stocker cattle grazing pastures during the summer months face challenges due to horn
flies, which can result in reduced weight gains and less efficient use of forages. One strategy
for controlling horn flies is insecticide-impregnated ear tags. The use of pesticide ear
tags may be an effective management practice to improve overall productivity during
a grazing season. The objective of this study was to evaluate the efficacy of insecticide
ear tags as a means of improving growth of stocker calves grazing native pastures in the
Flint Hills region of Kansas
Backgrounding health associated with area of the truck where cattle were housed during transport
Cattle are commonly moved between geographic regions by using commercial transport
carriers, and the vast majority of cattle are transported at least one time during their lives. Both handling and travel associated with moving cattle between locations have been identified as potentially stressful events. The objective of this research was to identify potential associations between calf location within the transport carrier and subsequent calf wellness in the short term (40 to 60 days) following shipment. Health outcomes and average daily gain (ADG) were used to measure calf wellness during the backgrounding period. Although some research has described the overall effect of hauling cattle, we are aware of no recent literature describing the effects of location within the vehicle on subsequent animal wellness and performance
Backgrounding health associated with area of the truck where cattle were housed during transport
Cattle are commonly moved between geographic regions by using commercial transport carriers, and the vast majority of cattle are transported at least one time during their lives. Both handling and travel associated with moving cattle between locations have been identified as potentially stressful events. The objective of this research was to identify potential associations between calf location within the transport carrier and subsequent calf wellness in the short term (40 to 60 days) following shipment. Health outcomes and average daily gain (ADG) were used to measure calf wellness during the backgrounding period. Although some research has described the overall effect of hauling cattle, we are aware of no recent literature describing the effects of location within the vehicle on subsequent animal wellness and performance
Comparison of Synovex-S® and two levels of Revalor-S® in heavy-weight Holstein steers
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
Characteristics of pelleted wheat middlings that affect summer storage
Pelleted wheat middlings samples were collected from four Kansas flour mills in March, April, and May, 1997 to characterize their moisture content and bulk density as they would be purchased directly from the mills by a livestock producer. The average moisture content of pelleted wheat middlings was 14% as they left the mills but declined during the spring to 13.6%. Pellets purchased from Kansas mills during the summer months are likely to contain 13.0 to 13.5% moisture. The average bulk density was approximately 40 lb/ft3 , which is equivalent
to about 50 lb/bu. Based on the equilibrium moisture contents determined from the collected
samples, if air at typical Kansas summertime temperatures is above 65% relative humidity, pellets will absorb moisture during storage
Feeding a Novel Trace Mineral at Lower Levels to Grazing Stocker Cattle Does Not Impair Performance
When grazing stocker cattle on native Flint Hills pasture, optimizing growth rate is important in determining overall profitability. The correct selection of mineral supplements is an important decision that can be used to help promote overall productivity during a grazing season
Evaluation of Trace Mineral Sources on Newly Arrived Stocker Cattle
Light weight stocker calves experience variable degrees of physiological and psychological stressors as they are assembled from various marketing points and transported to their destination. Susceptibility to disease in young, long hauled calves is greatly enhanced and the consequence of sickness is a major cause for poor production outcomes. Enhanced nutritional trace mineral programs that contain zinc, copper, and manganese from organic or hydroxy sources may be more efficacious as a means of minimizing disease or realizing improved performance than the sulfate form of these respective trace minerals
Using a mixture of cottonseed hulls and cottonseed meal to replace alfalfa hay in diets for stressed feeder calves
One 28-day receiving experiment was
conducted using 625 exotic Ă— British cross
heifers to evaluate growth performance and
morbidity on receiving diets that contained
either alfalfa hay or a pellet composed of
65% cottonseed hulls and 35% cottonseed
meal as the roughage source. Heifers fed the
cotton byproduct pellet consumed more feed
(P<0.01) but tended to be less efficient than
those fed alfalfa hay. Daily gain was comparable
between diets (P>0.05), and the percentages
of heifers diagnosed, treated, or
retreated for respiratory disease were similar
Receiving Stocker Cattle Performance is Similar With Either Corn or Sorghum Wet Distillers Grains
Distillers grains are an excellent energy and protein feed source for beef cattle. Corn distillers grains have been fed to beef cattle for many years, but sorghum distillers grains are becoming more popular and may be more cost effective than corn. Sorghum is very comparable to corn in terms of energy, but has a higher crude protein value. All distillers grains are available in a wet and dry form. The moist texture of wet distillers grains can help to reduce sorting at the bunk and appears to improve intake in young calves. The objective of this study was to evaluate the effect of corn and sorghum wet distillers grains on performance and digestibility of receiving stocker calves
Supplementation of Methionine or Choline Did Not Improve Health or Growth Performance in High-Risk, Newly Received Beef Heifers
Objective:This study was conducted to determine if supplemental methionine or choline improves health or growth performance in high-risk, newly received beef heifers.
Study Description:In a 3-year experiment, 1,440 beef heifers (480 per year; 493 lb initial weight; Tennessee origin) were received in 15 truckloads (five per year) in October of 2020, 2021, and 2022. Heifers were limit-fed in 60-day receiving trials to evaluate the effects of supplemental methionine or choline on health and growth performance. Cattle received one of five treatments: control (no added methionine or choline); 5 or 15 g/day available methionine (8.33 or 25 g/day Smartamine M; Adisseo USA Inc., Alpharetta, GA; ruminally protected methionine); or 1.17 or 3.5 g/day available choline (26 or 78 g/day ReaShure; Balchem Corp., Montvale, NJ; ruminally protected choline).
Results:Small differences among treatments were observed for final body weight, average daily gain, and gain:feed (P ≤ 0.10), but none of the treatments differed from the control. No differences among treatments were observed for respiratory morbidity or mortality (P≥ 0.30).
The Bottom Line:Supplemental methionine or choline did not affect health or growth performance of high-risk, newly received heifers
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