Efficacy of Lutalyse® as an Abortifacient in Feedlot Heifers
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چکیده
منابع مشابه
Heat 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...
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The abortifacient effect of antiplacental sera was confirmed with the use of goat and rabbit anti-Rhesus monkey placental globulin (IgG). To induce abortion, a total of 600-1000 mg IgG (from goats and rabbits treated to produce antiplacental sera) was injected intravenously over 3 days into 9 monkeys at 39-54 days of gestation. As a control a similar dose of normal goat globulin was injected ...
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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...
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as far as bandura’s (1977) conceptualization of the sense of self-efficacy is concerned, it is argued to be context- and even task-specific, compared to other concepts like self-esteem (brown, 2000); therefore, upon the previous research studies, related theories and definitions, and the ideas and views obtained from the interviews conducted with the scholars, the current research study aimed a...
Comparison 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...
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ژورنال
عنوان ژورنال: Kansas Agricultural Experiment Station Research Reports
سال: 1983
ISSN: 2378-5977
DOI: 10.4148/2378-5977.2521