Reproductive effects of pyrethroid use in beef cattle
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Effects of Label-Dose Permethrin Administration on Reproductive Function and Embryo Quality on Superovulated Beef Heifers
and Implications Commercial pyrethroid pour-ons are commonly applied in cow-calf operations to eliminate the potential for insect borne diseases and to improve productivity. However, recent literature has focused on potential negative reproductive effects in the bull after exposure to pyrethroids. While the female bovine has been primarily neglected from the debated pyrethroid concern on reprod...
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and Implications To eliminate the potential for insect borne diseases and improve productivity in cow-calf operations, many producers use pour-on pyrethroids. However, popular press literature has identified potential links between use of pyrethroids and reproductive function failures in bulls. While literature in mice and rats have reported potential endocrine disruption of sex steroids result...
متن کاملEffects of Fat Supplementation on Reproduction in Beef Cattle
Introduction Adequate nutrition is critical for successful reproductive function. Inadequate dietary energy intake and poor body condition can negatively affect reproductive function. Supplemental lipids have been used to increase the energy density of the diet and avoid negative associative effects often experienced with cereal grains (Coppock and Wilks, 1991; Bowman and Sanson, 1996). Supplem...
متن کاملDoes Disposition Affect Reproduction in Beef Cattle?
Disposition has been shown to significantly affect feed intake and growth rates of beef cattle. However, little research has evaluated the effects of poor disposition, and methods to improve this trait, on reproductive function of beef females. Thus, two experiments were conducted to determine the effects of disposition and acclimation to human handling on reproductive function of mature cows a...
متن کاملUse of Dichlorvos in a Portable Automatic Sprayer Mineral Station to Control Face Flies ( Diptera : Muscidae ) and Pyrethroid - Resistant Horn Flies ( Diptera : Muscidae ) on Beef Cattle '
J. Agric. Entomol. 9(4);273-281 (October 1992) ABSTRACT A portable automatic sprayer, actuated when cattle obtain mineral, was tested against face fiies and pyrethroid·resistanL horn nics using 0.5% Al dichlorvos in a waler spray mixture. Horn ny populations were initially 48-fold resistant to pCt-methrin with no '"esistancc to diazinon. Horn Oy control averaged 90.3 to 99.1% reduction. Resista...
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