Encontrados 24 documentos, a visualizar página 1 de 3
Trichostrongylus colubriformis affecting sheep phosphorus metabolism and precis...
Dias-Silva,Tairon Pannunzio; Louvandini,Helder; Amarante,Alessandro Francisco Talamini doAbstract This review details the negative effects of Trichostrongylus colubriformis infection in sheep phosphorus metabolism and direct and indirect impacts from high excretion from susceptible animals, as well as the advantages offered by precision feeding as potential strategies to mitigate loss. In sheep infected with T. colubriformis there is a high reduction in P bioavailability, because of depression in t...
Performance of lambs under four levels of dietary supplementation and artificia...
Carvalho,Nadino; Neves,José Henrique das; Pennacchi,Caio Santos; Castilhos,Andre Michel de; Amarante,Alessandro Francisco Talamini doAbstract The effect of four diets on the performance of Dorper lambs that were artificially mix-infected with 1000 infective larvae (L3) of Haemonchus contortus and 1000 L3 of Trichostrongylus colubriformis every three days for 12 weeks was evaluated. For each diet, one infected group (n = 7) and one control group (n = 4) were set up. The four diets contained the following proportions of hay (H) and concentrate...
Gastrointestinal nematode infections do not hinder the development of Simmental...
Neves,José Henrique das; Carvalho,Nadino; Amarante,Alessandro Francisco Talamini doAbstract An evaluation was made of the effect of anthelmintic treatments on the performance of Simmental X Nellore crossbred calves before and after weaning. To this end, the calves were divided into three groups: (1) treated monthly with a low efficacy anthelmintic drug, ivermectin; (2) treated monthly with a highly effective anthelmintic drug, albendazole; and (3) untreated control group. All the groups in th...
Trichostrongylus colubriformis infection in Santa Inês lambs: impact on feed di...
Dias-Silva,Tairon Pannunzio; Abdalla Filho,Adibe Luiz; Katiki,Luciana Morita; Amarante,Alessandro Francisco Talamini do; Abdalla,Adibe LuizAbstract This study aimed to evaluate the effects of Trichostrongylus colubriformis infection on the hemato-biochemical parameters, feed digestibility, and nitrogen balance in Santa Inês lambs. Eighteen three-month-old Santa Ines castrated male lambs (16.9 ± 1.43 kg of body weight) were randomly distributed in two experimental treatments: infected with T. colubriformis (I, n = 9) and uninfected (U, n = 9). The ...
Losses caused by gastrointestinal nematode infections in Dorper lambs under two...
Starling,Renan Zappavigna Costa; Almeida,Fabiana Alves de; Viana,Marcus Vinícius Gonçalves; Castilhos,André Michel deAbstract The aim of this study was to evaluate the effect of two nutritional statuses on the productive performance of Dorper lambs naturally infected with gastrointestinal nematodes. Thirty-two lambs, grazing together on the same pasture, were allocated into four experimental groups: (G1) infected-supplemented diet, (G2) control-supplemented diet, (G3) infected-basal diet, and (G4) control-basal diet. Control ...
Helminth infections and hybridization between Haemonchus contortus and Haemonch...
Almeida,Fabiana Alves de; Bassetto,César Cristiano; Amarante,Mônica Regina Vendrame; Albuquerque,Ana Cláudia Alexandre deAbstract The occurrence and intensity of helminth infections were evaluated in sheep from pastures shared with cattle. In 2015 and 2016, young male sheep acquired in Santana do Livramento, Rio Grande do Sul, Brazil, were finished in integrated crop-livestock system. We selected the 12 sheep that showed the highest number of nematode eggs per gram of faeces to search for worms in the gastrointestinal tract. Haem...
Immune humoral response of young lambs naturally infested by Oestrus ovis (Dipt...
Silva,Bruna Fernanda da; Bassetto,César Cristiano; Amarante,Alessandro Francisco Talamini doAbstract Twenty-six newborn lambs were evaluated for 21 weeks, from birth to slaughter, to assess their plasma anti-Oestrus ovis immunoglobulin (IgG) using the ELISA technique. On the last day of sampling, all the lambs were slaughtered and O. ovis larvae were recovered, quantified and identified according to the larval stage. High levels of IgG were observed over the first three weeks of life, thus indicating ...
Comparative study of five techniques for the diagnosis of canine gastrointestin...
Coelho,Willian Marinho Dourado; Gomes,Jancarlo Ferreira; Falcão,Alexandre Xavier; Santos,Bianca Martins dos; Soares,Felipe AugustoDifferences in the efficacy of diagnostic techniques employed in the parasitological examination of feces are a limiting factor of this laboratory procedure in the field of Veterinary Parasitology. To verify advances in this type of examination in dogs, we conducted a study using a new technique (TFGII/Dog). Fifty naturally infected dogs were housed in individual stalls, and their feces were evaluated comparati...
Gastrointestinal nematode infections in sheep raised in Botucatu, state of São ...
Wilmsen,Maurício Orlando; Silva,Bruna Fernanda; Bassetto,César Cristiano; Amarante,Alessandro Francisco Talamini doGastrointestinal nematode infections were evaluated in sheep raised in Botucatu, state of São Paulo, Brazil between April 2008 and March 2011. Every month, two tracer lambs grazing with a flock of sheep were exposed to natural infection with gastrointestinal nematodes for 28 consecutive days. At the end of this period, the lambs were sacrificed for worm counts. Haemonchus contortus presented 100% of prevalence....
Retrieval of Trichostrongylus colubriformis infective larvae from grass contami...
Rocha,Raquel Abdallah da; Bricarello,Patrizia Ana; Rocha,Gilberto Pedroso da; Amarante,Alessandro Francisco Talamini doThe survival of infective larvae (L3) of Trichostrongylus colubriformis was evaluated on Brachiaria, Coast-cross and Aruana forage grasses. Feces of sheep parasitized exclusively by T. colubriformis were deposited in winter and spring on experimental plots whose grasses were cut at two heights: 5 cm and 30 cm. One, two, four, eight, 12 and 16 weeks after depositing the feces, fecal and forage samples were colle...