Consumption of nutritional pellets with Duddingtonia flagrans fungal chlamydospores reduces infective nematode larvae of Haemonchus contortus in faeces of Saint Croix lambs

Two groups of six Haemonchus contortus infected Saint Croix lambs each received different diets for 11 weeks: control group, commercial food, molasses and lucerne hay; and treated group, nutritional pellets (NPs) containing Duddingtonia flagrans at 2 × 106 chlamydospores/kg body weight (BW), sorghum...

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Bibliographic Details
Published in:Journal of helminthology 2017-11, Vol.91 (6), p.665-671
Main Authors: Aguilar-Marcelino, L., Mendoza-de-Gives, P., Torres-Hernández, G., López-Arellano, M.E., Becerril-Pérez, C.M., Orihuela-Trujillo, A., Torres-Acosta, J.F.J., Olmedo-Juárez, A.
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animal Feed - microbiology
Animals
Body weight
Cell size
Chlamydospores
Diet
Duddingtonia - physiology
Eggs
Feces
Feces - parasitology
Feed conversion
Fungi
Haemonchiasis - parasitology
Haemonchiasis - prevention & control
Haemonchus - microbiology
Haemonchus - physiology
Haemonchus contortus
Hay
Infections
Lamb
Larva - microbiology
Larvae
Molasses
Parasites
Parasitology
Pellets
Pest Control, Biological - methods
Reduction
Research Papers
Sheep
Sheep - parasitology
Sheep - physiology
Sheep Diseases - parasitology
Sheep Diseases - prevention & control
Sorghum
Spores, Fungal - physiology
Worms
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Summary:Two groups of six Haemonchus contortus infected Saint Croix lambs each received different diets for 11 weeks: control group, commercial food, molasses and lucerne hay; and treated group, nutritional pellets (NPs) containing Duddingtonia flagrans at 2 × 106 chlamydospores/kg body weight (BW), sorghum and lucerne hay. Mean BW gain (BWG), body condition score (BCS) and packed cell volume (PCV) and also eggs/g of faeces (EPG) and recovered L3 were compared using a repeated measures across time model. Groups had similar BWG (control 139.7 ± 0.035 g/day and treated 167.7 ± 0.041 g/day), BCS (control 3.6 ± 0.39 and treated 3.4 ± 0.46) and PCV (control 32.5 ± 1.68% and treated 30.0 ± 1.68%). The mean EPG of the control group was 1215 ± 1040 and in the treated group it was 2097.91 ± 2050. No reduction in larval population was observed during weeks 2 and 3. The greatest larval population reduction in the faeces of treated lambs was observed during the first week (70.5%) and from weeks 6 to 11, with a mean value close to 70% (P < 0.05). In general, both experimental groups showed a similar feed conversion. It was concluded that both diets resulted in similar lamb growth, PCV, BCS and H. contortus EPG. However, NP consumption significantly reduced the H. contortus L3 population in lamb faeces.
ISSN:0022-149X
1475-2697
DOI:10.1017/S0022149X1600081X