Incidence of Toxocara vitulorum in Creole calves of Guadeloupe

Mahieu, Maurice; Naves, Michel

doi:10.1007/s11250-007-9094-1

Cited by 10 publications

(8 citation statements)

References 10 publications

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“…The ADG of heifers was similar to that demonstrated in previous studies (400 g/day) investigating Creole and Nellore steers in the pasture (Boval et al, 2002;Ribeiro et al, 2008;Agastin et al, 2010). However, the ADG of Creole cattle has been shown to reach 800 g/day in the absence of supplementation (Mahieu and Naves, 2008;do Canto et al, 2009).…”

Section: Discussionsupporting

confidence: 86%

Mixed grazing systems of goats with cattle in tropical conditions: an alternative to improving animal production in the pastureq

d'Alexis¹,

Périacarpin²,

Jackson

et al. 2014

Animal

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Mixed grazing systems combining sheep and cattle have shown better growth performance for one or both species. This observation has been attributed to their complementary feeding behaviour and the reduced host infection by gastrointestinal nematodes. Less attention has been paid to mixed grazing systems combining goats and cattle. Here, continuously grazing goats mixed with cattle (M) were compared with control goats reared alone (C) under tropical conditions. The comparison was conducted with gastrointestinal nematode-infected (I) and non-infected (nI) goats. Thus, the four treatments were cattle with gastrointestinal nematode-infected goats (MI), gastrointestinal nematode-infected goats alone (CI), cattle with non-infected goats (MnI) and non-infected goats (CnI). Average daily gain (ADG, g/day) and grass production were measured for the four groups of animals (six goats and two heifers treated with MI or MnI) grazing for 3 months on 4 subplots. Monthly measurements were performed over 5-day periods. This pattern was replicated in space for a second set of four subplots and in time for six successive cohorts of animals (bands 1 to 6). The ADG of goats in mixed grazing conditions was higher than controls irrespective of the infection status (32.6 v. 18.4 g/day for MI v. CI; 44.2 v. 33.5 g/day for MnI v. CnI). Concomitantly, the average biomass was lower for mixed grazing animals compared with controls (174 v. 170 for MI and MnI; 235 v. 208 for CI and CnI, respectively), suggesting better use of the sward. For daily BW gain (g/kg DM), mixed grazing also yielded better results than the control (1.88 v. 0.52 g BW/kg DM per day for MI v. CI; 2.08 v. 1.47 g BW/kg DM per day for MnI and CnI). Mixed grazing of goats and heifers offers a promising alternative for increasing goat and overall animal production as well as improving the management of pastures.Keywords: mixed grazing, BW, goat, agro-ecological management, tropical ImplicationsThis study conducted over 2 years showed a higher average daily gain of grazing goats pastured together with cattle compared with goats reared alone, considering either the individual gain or gain per hectare. This increased gain occurred irrespective of the infection status of the goats. Moreover, the biomass was lower in mixed grazing conditions, likely due to improved use of the pasture by goats that were mixed with cattle. These results suggest that integrated grazing could be employed as an alternative agroecological strategy to increase performance per hectare and control residual biomass. In addition, this strategy represents an important alternative to reduce the use of anthelmintics.

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Section: Discussionsupporting

confidence: 86%

Mixed grazing systems of goats with cattle in tropical conditions: an alternative to improving animal production in the pastureq

d'Alexis¹,

Périacarpin²,

Jackson

et al. 2014

Animal

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“…It is transmitted to calves both transplacentally before birth and via lactation after birth (Starke et al 1996;Muhammad et al 2007). The parasitized animals eliminate T. vitulorum eggs in the feces after 22 days of birth, contaminating the environment and other animals (Mahieu and Naves 2008). Roberts (1990) pointed out that the prevalence of T. vitulorum in most countries is between 5 and 50% and has been influenced by animal species, sex and seasonal variations.…”

Section: Introductionmentioning

confidence: 99%

Predatory activity of Pochonia chlamydosporia fungus on Toxocara (syn. Neoascaris) vitulorum eggs

Braga

Ferreira

Araújo

et al. 2009

Trop Anim Health Prod

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Toxocara (Neoascaris) vitulorum is a gastrointestinal nematode parasite of young ruminants, responsible for high mortality rates in parasitized cattle and buffalo calves. The objective of this work was to compare the predatory capacity under laboratory conditions of four fungal isolates of the nematophagous fungus Pochonia chlamydosporia (VC1, VC4, VC5 and VC12) on T. vitulorum eggs in 2% water-agar (2% WA). T. vitulorum eggs were plated on 2% WA Petri dishes which contained cultured fungal isolates and control plates without fungi. After 10 and 15 days one hundred eggs were removed and classified according to the following parameters: type 1, biochemical and physiological effect without morphological damage to the eggshell, type 2, lytic effect with morphological alteration of the eggshell and embryo and type 3, lytic effect with morphological alteration of eggshell and embryo in addition to hyphal penetration and internal egg colonization. The fungal isolates were effective in the destruction of T. vitulorum eggs presenting the type 3 effect at 10 and 15 days after contact with the fungus. No nematophagous fungi were observed in the control group during the experiment. There was no variation in the predatory capacity of the fungal isolates (P > 0.01) at the intervals of 10 and 15 days. These results indicate that P. chlamydosporia (VC1, VC4, VC5 and VC12) negatively influenced the development of T. vitulorum eggs and can be considered a potential candidate for the biological control of nematodes.

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“…In the live stock industry, the parasite causes worldwide economic losses in terms of anorexia and subsequent weight loss, and even death [3,4]. Until now, several widespread incidences of the parasite infestation have been reported from various regions of the world [3][4][5][6]. In the absence of an effective vaccine, the only fruitful choice is chemotherapy to cure and control parasitic disease, but there are several reports of emergence of anthelmintic resistance in parasites [1].…”

Section: Introductionmentioning

confidence: 99%

Anthelmintic effects of zinc oxide and iron oxide nanoparticles against Toxocara vitulorum

et al. 2017

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In the present study, zinc oxide (ZnO) and iron oxide (FeO) nanoparticles were examined for their possible, in vitro anthelmintic effects against Toxocara vitulorum. The worms were incubated for 24 h with different concentrations (0.004, 0.008 and 0.012% w/v) of the nanoparticles. The parasite mobility, mortality, superoxide dismutase (SOD) activity, malondialdehyde (MDA) and nitric oxide (NO) level were recorded at different time intervals. The results showed that both of the nanoparticles could significantly decrease worm's mobility, increase mortality rate as well as elevate MDA and NO content as compared to control group in a time-and concentrationdependent manner. SOD activity was elevated with the low concentration of the nanoparticles but it was decreased in higher ones. It can be concluded that ZnO and FeO nanoparticles exert their anthelmintic effects via induction of oxidative/nitrosative stress.

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Incidence of Toxocara vitulorum in Creole calves of Guadeloupe

Cited by 10 publications

References 10 publications

Mixed grazing systems of goats with cattle in tropical conditions: an alternative to improving animal production in the pastureq

Mixed grazing systems of goats with cattle in tropical conditions: an alternative to improving animal production in the pastureq

Predatory activity of Pochonia chlamydosporia fungus on Toxocara (syn. Neoascaris) vitulorum eggs

Anthelmintic effects of zinc oxide and iron oxide nanoparticles against Toxocara vitulorum

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