Supplementing narasin or monensin to control coccidiosis in naturally infected calves.

This experiment compared narasin and monensin as anticoccidials for calves naturally infected with spp. Twenty-four weaned, non-castrated male calves ( ×  cross) were assigned to this experiment (days -8 to 42). All calves were infected by spp.

Effects of supplementing narasin to heifers during late-gestation and lactation on development of the offspring.

This experiment evaluated the effects of supplementing narasin during late-gestation and lactation on productive and physiological responses of beef heifers and their offspring. Pregnant, nulliparous Nelore heifers ( = 88) that conceived under the same fixed-time artificial insemination protocol and to the same sire were used. Heifers were ranked by maternal ability genomic score, body weight () and body condition score () and allocated to 44 drylot pens (2 heifers per pen; 10 × 25 m).

Persistent efficacy of 3.5% doramectin compared to 3.15% ivermectin against gastrointestinal nematodes in experimentally-infected cattle in Brazil.

The present study aimed to evaluate the persistent efficacy of a 3.5% doramectin(*) (700 μg/kg) formulation compared to 3.15% ivermectin(**) (630 μg/kg) treatment, administered subcutaneously at a dose of 1 mL/50 kg body weight in cattle experimentally infected with gastrointestinal nematodes.