A Comparison of Melengestrol Acetate Fed at Two Dose Levels to Feedlot Heifers
Tài liệu tham khảo
Ashmore, 1973, Experimental prevention of dark-cutting meat, J. Anim. Sci., 36, 33, 10.2527/jas1973.36133x
Bloss, 1966, Effects of oral melengestrol acetate on the performance of feedlot cattle, J. Anim. Sci., 25, 1048, 10.2527/jas1966.2541048x
1974, Elanco. Tylan premix for beef cattle, Technical B Manual. Elanco, Indianapolis, IN.
Imwalle, 2002, Melengestrol acetate blocks the preovulatory surge of luteilizing hormone, the expression of behavioral estrus, and ovulation in beef heifers, J. Anim. Sci., 80, 1280, 10.2527/2002.8051280x
Kenny, 1988, The effect of oestrus behaviour on muscle glycogen concentration and dark-cutting in beef heifers, Meat Sci., 22, 21, 10.1016/0309-1740(88)90024-1
Kreikemeier, 1998, Factors affecting the occurrence of dark-cutting beef and selected carcass traits in finished beef cattle, J. Anim. Sci., 76, 388, 10.2527/1998.762388x
Kreikemeier, 2004, Effects of growth-promoting agents and season on yearling feedlot heifer performance, J. Anim. Sci., 82, 2481, 10.2527/2004.8282481x
Lauderdale, 1983, Use of MGA (melengestrol acetate) in animal production. in Anabolics in Animal Production: Public Health Aspects, Analytical Methods and Regulation, Office International des Epizooties, Paris, France., 193
Macken, 2003, Effects of final implant type and supplementation of melengestrol acetate on finishing heifer performance, carcass characteristics, and feeding economics, Prof. Anim. Sci., 19, 159, 10.15232/S1080-7446(15)31395-4
Mader, 2000, Growth-promoting systems for heifer calves and yearlings finished in the feedlot, J. Anim. Sci., 78, 2485, 10.2527/2000.78102485x
McKenna, 2002, National Beef Quality Audit—2000: Survey of targeted cattle and carcass characteristics related to quality, quantity, and value of fed steers and heifers, J. Anim. Sci., 80, 1212, 10.2527/2002.8051212x
Moseley, 2003, A dose-response study of melengestrol acetate on feedlot performance and carcass characteristics of beef steers, J. Anim. Sci., 81, 2699, 10.2527/2003.81112699x
1996, NRC. 1996. Nutrient Requirements of Beef Cattle, 7th rev. ed. Natl. Acad. Press, Washington, DC.
O’Brien, 1968, Effect of melengestrol acetate on the growth and reproductive physiology of fattening heifers, J. Anim. Sci., 27, 664, 10.2527/jas1968.273664x
Purchas, 1970, Pituitary and plasma growth hormone levels in bulls from birth to one year of age, J. Anim. Sci., 31, 358, 10.2527/jas1970.312358x
Purchas, 1971, Some endocrine influences on the growth and carcass quality of Holstein heifers, J. Anim. Sci., 33, 836, 10.2527/jas1971.334836x
Romans, 1988, Characterization of heifer beef color related to natural onset of estrus and estrus onset caused by withdrawal of melengestrol acetate, in Proc 34th Int. Congr. Meat Sci. and Technol. CSIRO Meat Research Laboratory, Brisbane, Australia., 231
Roussel, 1969, Effect of melengestrol acetate on synchronization of estrus, subsequent fertility and milk constituents of lactation dairy cows, J. Dairy Sci., 52, 2020, 10.3168/jds.S0022-0302(69)86889-X
Scanga, 1998, Factors contributing to the incidence of dark cutting beef, J. Anim. Sci., 76, 2040, 10.2527/1998.7682040x
2008, USDA. 2008. National Weekly Direct Slaughter Cattle—Premiums and Discounts for the Week of 4/7/2008, Accessed April 11, 2008.
1968, US Food and Drug Administration. Melengestrol acetate, in The Code of Federal Regulations, Section 558.342. Food and Drug Admin., Washington, DC., 419
Voisinet, 1997, Feedlot cattle with calm temperaments have higher average daily gains that cattle with excitable temperaments, J. Anim. Sci., 75, 982, 10.2527/1997.754892x
Wettemann, 1973, Luteinizing hormone, prolactin, and interval to ovulation after melengestrol acetate in cattle, J. Dairy Sci., 56, 261, 10.3168/jds.S0022-0302(73)85159-8
Young, 1969, Effects of an oral progestogen on feedlot heifers, J. Anim. Sci., 28, 224, 10.2527/jas1969.282224x
Zimbelman, 1966, Control of ovulation in cattle with melengestrol acetate. II. Effects of follicular size and activity, J. Reprod. Fertil., 11, 193, 10.1530/jrf.0.0110193