Value of implanting and reimplanting feedlot heifers
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چکیده
منابع مشابه
Salinomycin Levels For Feedlot Steers and Heifers
A new feed additive, salinomycin, was fed to 70 finishing steers (initial weight of 772lb) and 70 finishing heifers (initial weight of 4951b) for 139 and 145 days, respectively. Salinomycin was fed at 0, 5, 10, 15, and 20 g per ton of a ground corn based diet. Averaged across salinomycin levels, gain was increased 2.6 percent and efficiency of feed use was improved by 7.8 percent. Feed intake w...
متن کاملHeat stress risk factors of feedlot heifers
Heat stress in cattle results in millions of dollars in lost revenue each year due to production losses, and in extreme cases, death. Death losses are more likely to result from animals vulnerable to heat stress. A study was conducted to determine risk factors for heat stress in feedlot heifers. Over two consecutive summers, a total of 256 feedlot heifers (32/ breed/ year) of four breeds were o...
متن کاملComparison of heat tolerance of feedlot heifers of different breeds
Heat stress in cattle causes decreases in feed intake and feed efficiency; in extreme cases, it can cause death. These losses amount to millions of dollars each year. A study was designed to determine severity of heat stress among four breeds of cattle. Throughout two summers, 256 feedlot heifers of four different breeds were observed. Respiration rates, panting scores, and surface temperatures...
متن کاملDietary zilpaterol hydrochloride. I. Feedlot performance and carcass traits of steers and heifers.
Experiments were conducted at 3 US locations (CA, ID, and TX) to determine the effects of dietary zilpaterol hydrochloride (Zilmax, Intervet Inc., Millsboro, DE) and duration of zilpaterol feeding on performance and carcass merit of finishing steers and heifers. At each site, 160 steers and 160 heifers were stratified within sex by initial BW (study d -1) and assigned randomly within BW strata ...
متن کاملPerformance and Carcass Characteristics of Feedlot Steers: Effects of Delayed Implanting and Programmed Feeding During the Growing Period
This experiment was conducted to determine the effect of programming the rate of gain and delaying the first implant in feedlot steers on feedlot performance and carcass characteristics. Ninety-six growing steers (269 ± 16.2 kg) were assigned to 12 pens in a completely randomized design. Treatments were implant (Synovex-S; 20 mg estradiol benzoate and 200 mg progesterone; Fort Dodge Animal Hea...
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ژورنال
عنوان ژورنال: Kansas Agricultural Experiment Station Research Reports
سال: 1983
ISSN: 2378-5977
DOI: 10.4148/2378-5977.2538