Effect of the nutritional status of Creole goats on the density-dependent prolificacy of Haemonchus contortus

•Effects of the nutritional status on the pathophysiological impact of Haemonchus contortus were evaluated.•No impact of the infection was observed on diet intake and digestibility.•The high nutritional status reduced the anemia of infected goat kids.•The high nutritional status reduced the nematode...

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Bibliographic Details
Published in:Veterinary parasitology 2019-12, Vol.276, p.108973-108973, Article 108973
Main Authors: Cériac, Steve, Durbant, Priscilla, Godard, Xavier, Barbier, Claude, Feuillet, Dalila, Félicité, Yoann, Archimède, Harry, Bambou, Jean-Christophe
Format: Article
Language:English
Subjects:
Anemia - prevention & control
Anemia - veterinary
Animal biology
Animal Feed - analysis
Animal Feed - standards
Animals
Density-dependent
Diet - veterinary
Digestion
Eating
Eosinophils - cytology
Feces - chemistry
Feces - parasitology
Female
Goat Diseases - parasitology
Goat Diseases - physiopathology
Goat Diseases - prevention & control
Goat kids
Goats
Haemonchiasis - parasitology
Haemonchiasis - physiopathology
Haemonchiasis - veterinary
Haemonchus - growth & development
Haemonchus contortus
Leukocyte Count - veterinary
Life Sciences
Male
Nutrition
Nutritional Status - physiology
Parasite Egg Count - veterinary
Pepsinogen A - blood
Prolificacy
Veterinary medicine and animal Health
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Summary:•Effects of the nutritional status on the pathophysiological impact of Haemonchus contortus were evaluated.•No impact of the infection was observed on diet intake and digestibility.•The high nutritional status reduced the anemia of infected goat kids.•The high nutritional status reduced the nematode burden but not the faecal egg counts. The objective of this study was to measure the effect of the nutritional status of Creole goat kids on the host responses and the nematode population established after an experimental H. contortus infection. Fifty six kids were fed with 4 diets corresponding to 2 nutritional statuses: the low nutritional status (HAY, hay ad libitum and HB, Hay ad libitum + banana) and the high nutritional status (HS, hay ad libitum + soya meal and HSB, hay ad libitum + banana + soya meal). For each diet, 8 kids were experimentally infected with 10,000 H. contortus infective larvae (L3) and 6 kids were kept as non-infected controls. From the day of infection until 6 weeks post-infection, samples were collected to measure individual intake, total tract digestibility, parasitological and hematological parameters. The dry matter intake (DMI), the average daily gain (ADG), the crude protein (CP) and the digestible CP intake were higher in goats fed the HS and HSB diets, but no statistically significant interaction between the nutritional status and the infection was observed. The packed cell volume (PCV), the red blood cell counts (RBC) and the mean corpuscular volume (MCV) were higher with the HS and the HSB diets. In kids with the high nutritional status the nematode burden and pathophysiological impact of the infection were significantly lower but not the FEC. In conclusion, this reduced establishment rate was associated with an increased production of eggs by the female parasites and suggested a phenomenon of density-dependent prolificacy of H. contortus probably inherent to the fitness of the parasite population.
ISSN:0304-4017
1873-2550
DOI:10.1016/j.vetpar.2019.108973