NOVEL COMBINATION OF FIPRONIL (1%) AND EPRINOMECTIN (0.5%) FOR INTERNAL AND EXTERNAL PARASITE CONTROL AND ITS IMPACT ON DAILY AVERAGE WEIGHT GAIN ON BEEF CATTLE, FED IN JALISCO, MEXICO.

• DOI: 10.22533/at.ed.8133102307114

• Palavras-chave: -

• Keywords: Feedlot, beef cattle, ADG, parasites, Mexico.

• Abstract: Parasite control on beef cattle is necessary to ensure health and good performance. Our chemical tools to control parasites sometimes put at risk the environment, animal workers or endanger natural resources such as fresh water or soil; other times are a source of stress and pain for the animals when they are applied by immersion, sprayed, or injected, respectively. A novel combination of Fipronil 1% plus Eprinomectin 0.5% applied pour-on could prevent environmental over exposure and reduce stress or pain in the animals. 299 male and female growing beef cattle were followed over 116-day period and the use of this novel combination was compared to the conventional Moxidectin 1% injected treatment. ADG was increased in 0.063kg /head in 149 animals that received Fipronil 1% plus Eprinomectin 0.5%. Gender or Breed interactions with treatment did not influence ADG. Novel combination of Fipronil 1% plus Eprinomectin 0.5% provided internal and external parasite control and increased ADG when compared to Moxidectin 1% use, under feedlot conditions in Jalisco, Mexico