A diarréia está entre as principais causadoras de morbidade e mortalidade em bezerros, tanto rebanho corte quanto leiteiro. É caracterizada como um aumento na quantidade frequência da defecação, causando grandes perdas minerais líquidos do organismo. Pode ser causada por diferentes agentes etiológicos parasitos gastrointestinais, bactérias, fungos vírus. Dentre espécies os helmintos mais recorr...

Sixteen grey duikers were culled on the farm Riekert 's Laager in the central Transvaal at irregular intervals from May 1979-March 1981. One trematode species, 3 cestode species and 16 nematode species were recovered from these animals. Of these the following are new helminth records for this antelope: Cooperia hungi , Cooperia neitzi , Cooperia pectinata , Trichostrongylus axei, Trichostrongyl...

Resistance to benzimidazoles (BZs) in trichostrongyloid nematodes is a worldwide problem for livestock production, particularly regarding small ruminants. Sensitive and reliable methods are required to assess anthelmintic resistance status. Currently available methods for BZ resistance detection can be divided into three main groups, in vivo (e.g. faecal egg count reduction test), in vitro (e.g...

Parasitic nematodes have significant detrimental effects on the profitability of beef production in South Dakota. Administering anthelmintics can be inconvenient and expensive when treating cattle on pasture. Free-choice anthelmintics were developed to improve the ability of beef producers to effectively deworm cattle without passing them through a cattle chute. The convenience of free-choice a...

We screened the fecal samples of 179 individuals of small mammal species (Primates: Cheirogaleus major, C. medius, Microcebus murinus, Rodentia: Eliurus webbi, Rattus rattus, and Afrosoricida: Setifer setosus) for gastrointestinal parasites. Nematodes with direct life cycles were most abundant. They included ascarids (Ascaris sp. and probably Ascaris petiti), strongylids (Strongyloïdes spp. and...

Three species of trichostrongylid nematodes; Trichostrongylus colubri-fonnis (GILES, 1892), Impalaia tuberculata MONNIG, 1923 and Paraheligmonel-loides kenyensis gen. et sp. n. are described. All worms were found in the small intestines of the Pronolagus sp. from Kenya. This is the first record of parasitic nematodes from the genus Pronolagus. 1. tuberculata is the first record of the genus Imp...

Sheep grazed on natural pastures heavily infested with infective larvae of Haemonchus contortus. Sixty-eight weaned Merinos were divided into 6 groups on Day 0 (23 November 1977), and on Day +14 (7 December) 79 Merinos were divided into 7 groups. There were 2 groups of undosed controls and other groups were either dosed with infective larvae of Trichostrongylus axei (bovine strain) only on Days...

El impacto productivo de los nematodos gastrointestinales (NGI) sobre pequeños rumiantes es conocido a nivel mundial. Las infestaciones por NGI constituyen una limitante alto en la producción y las perdidas comprendidas este problema sanitario varían desde reducciones subclínicas ganancia peso hasta muerte animales con altas cargas parasitarias. objetivo trabajo presentar resultados un test efi...

Anthelmintic drug resistance has led to the search for alternatives in controlling helminth infections. Fifty West African Dwarf goats without history of anthelmintic treatment were divided equally into five groups. Group A was treated with ivermectin injection subcutaneously, group B with levamisole subcutaneously, group C with albendazole orally, and group D with aqueous extract of Vernonia a...