Gastrointestinal nematode populations with multiple anthelmintic resistance in sheep farms from the hot humid tropics of Mexico

Herrera-Manzanilla, F.A.; Ojeda-Robertos, Nadia Florencia; González-Gardúño, Roberto; Cámara-Sarmiento, Ramón; Torres-Acosta, J.F.J.

doi:10.1016/j.vprsr.2017.04.007

Cited by 20 publications

(18 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of commercial anthelmintic (AH) drugs for the con trol of gastrointestinal nematodes (GIN) is threatened by the presence of AH-resistant worm populations. Frequency of sheep farms with multi-resistant worm populations is increas ing at an alarming rate in tropical regions (Mahieu et al 201 5;Herrera-Manzanilla et al 2017;Sepulveda-Vazquez et al 2017). As a result, farmers need alternative methods of GIN control to reduce their dependence on commercial drugs.…”

Section: Introductionmentioning

confidence: 99%

An in vitro approach to evaluate the nutraceutical value of plant foliage against Haemonchus contortus

et al. 2018

View full text Add to dashboard Cite

Nutraceutical plants provide nutrients for the animal as well as secondary compounds that can affect the biology and survival of gastrointestinal nematodes (GIN). Current screening of nutraceutical plants is based on in vitro evidence of anthelmintic (AH) activity against different life stages of GIN, but nutritional information is omitted or scarce. This study proposes an integral in vitro screening protocol to identify the nutraceutical value of the foliage from plant species consumed by small ruminants, using Haemonchus contortus as a biological model. The leaves from Acaci a col/i,nsii, A. pennatula, Bunchosi a swartziana, Gymnopodium jloribundum, Havardia a/hicans, Leucaena leucocephala, Lysiloma latisiliquum, Mimosa bahamensis, Piscidia piscipula, and Senegalia gaumeri were evaluated for their chemical composition and in vitro digestibility. Acetone:water extracts (70:30) fr om leaves of each plant were evaluated using the egg hatch assay and larval exsheathment inhibition assay. Respective effective concentrations 50% (EC 50) were determined for each assay. The ten plant species showed good nutritional value for ruminants, including crude protein (> 10%), metabolizable energy (> 2.9 MJ/kg DM), and varied CT content (fr om 1.0 to 37.6%). The best AH activity againstH. contortus eggs (EC 50 = 401.8 µglmL) and L 3 (EC 50 = 83.1 µglmL) was observed for S. gaumeri extract. Although all the plant species showed in vitro nutraceutical potential, the leaves of S. gaumeri had the best values. The proposed in vitro protocol showed to be useful for the integral assessment of the nutraceutical potential of different plant species as it included the nutritional value and the AH activity against eggs and L.3 in the selected plant species.

show abstract

Section: Introductionmentioning

confidence: 99%

An in vitro approach to evaluate the nutraceutical value of plant foliage against Haemonchus contortus

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Control of gastrointestinal nematode (GIN) populations is becoming a difficult task in many countries around the world due to the widespread existence of worm populations with resistance against two or more anthelmintic (AH) classes (Torres-Acosta et al, 2012). In tropical México, the presence of resistance against two or three AH classes is a common feature in many sheep farms (Herrera-Manzanilla et al, 2017;Sepúlveda-Vázquez et al, 2017). As the situation of AH resistance worsens, it is necessary to seek for new management practices to delay further development of resistant GIN isolates.…”

Section: Introductionmentioning

confidence: 99%

Comparing body condition score and FAMACHA© to identify hair-sheep ewes with high faecal egg counts of gastrointestinal nematodes in farms under hot tropical conditions

Soto-Barrientos

Chan-Pérez

España-España

et al. 2018

Small Ruminant Research

Self Cite

View full text Add to dashboard Cite

“…Their use has proven to be an effective control solution. However, within recent years, the prevalence of anthelmintic resistance has risen sharply all around the world including Mexico [8][9][10]. Besides, even if new molecules could emerge, resistance would build up quickly [11] and this issue would remain.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Gastrointestinal Parasites and Productive Parameters on Sheep Fed on a Ration Supplemented with Guazuma ulmifolia Leaves in Southern Mexico

Bodo

Hornick

Moula

et al. 2020

Animals

View full text Add to dashboard Cite

This study aimed at evaluating the impact of a diet supplemented with Guazuma ulmifolia leaves on the productive performance and gastrointestinal parasites (GI) eggs/oocysts shedding of sheep (Pelibuey breed). Twenty-two non-lactating ewes were used. They were randomly allocated to two similar groups in terms of age, weight, body condition score (BCS), and GI parasites status. For 30 days, while the control group (G0) was given basic forage hay of Cynodon nlemfuensis, the test group (G1) received a blend of G. ulmifolia fresh foliage and C. nlemfuensis hay (respectively 30 and 70% of the diet on a DM basis). Animals were housed in separate covered pens. Quantitative coprological analysis was performed. Weight and BCS were evaluated. The daily feed amounts given and refused were measured in order to assess nutrient components intake (minerals, energy, and nitrogen). The results showed no significant differences between G1 and G0 regarding the anthelmintic and anticoccidial effects (p = 0.57, p = 0.91, respectively). Similarly, no significant overall impact on weight and BCS during the experiment (p = 0.77, p = 0.32, respectively) was observed. Nevertheless, concerning the bromatological analysis of G. ulmifolia, its use as a diet supplement to address protein and mineral deficits due to a poor-quality diet is fully justified.

show abstract

Gastrointestinal nematode populations with multiple anthelmintic resistance in sheep farms from the hot humid tropics of Mexico

Cited by 20 publications

References 24 publications

An in vitro approach to evaluate the nutraceutical value of plant foliage against Haemonchus contortus

An in vitro approach to evaluate the nutraceutical value of plant foliage against Haemonchus contortus

Comparing body condition score and FAMACHA© to identify hair-sheep ewes with high faecal egg counts of gastrointestinal nematodes in farms under hot tropical conditions

Assessment of Gastrointestinal Parasites and Productive Parameters on Sheep Fed on a Ration Supplemented with Guazuma ulmifolia Leaves in Southern Mexico

Contact Info

Product

Resources

About