China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (12): 4936-4944.doi: 10.16431/j.cnki.1671-7236.2022.12.041

• Basic Veterinary Medicine • Previous Articles     Next Articles

Effect of Supplementary Ellagic Acid on Parasitic Infection in Lactating Foals

GUO Cuijie, ZANG Changjiang, HUANG Xinxin, LI Jiahao, HE Linjiao, YANG Fan, REN Fei'er, CHEN Kaixu   

  1. College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2022-05-08 Online:2022-12-05 Published:2022-12-01

Abstract: 【Objective】 The aim of this study was to explore the effect of supplementary feeding ellagic acid on intestinal parasite infection in foals with pure blood during lactation, reveal the role of tannic acid in the prevention and treatment of digestive tract parasites in equines, and provide references for the screening of new anthelmintic drugs.【Method】 15 lactating pure blood foals with average body weight (143.33 ±16.10) kg, date of birth (±5 d) and similar parasite infection rate were randomly divided into control group and test groups Ⅰ and Ⅱ, with 5 foals in each group.Under the same feeding conditions, foals in the control group did not receive any treatment, foals in group Ⅰ were supplemented with 15 mg/kg BW of ellagic acid daily, and those in group Ⅱ were supplemented with 30 mg/kg BW of ellagic acid for a 60-day feeding experiment, and foal fecal samples were collected at 0, 15, 30, 45 and 60 days of the experiment to detect egg species, count the number of eggs and evaluate the deworming effect.【Result】 There were 10 species of parasites with high infection rates in mammalian thoroughbred foals, among which the most infected parasites were parasites, equine roundworm and slender-necked trilodonde.With the prolongation of ellagic acid feeding time and the increase of dose, the infection rate of parasites showed a decreasing trend, and the excretion of Trichodon tenuis eggs, Strongylus equi eggs, Parascaris equi and Strongylus westermani eggs were decreased significantly(P<0.05).The EPG values of test groups Ⅰ and Ⅱ were 66.59% and 97.06% lower than those of the control group on the 60th day after feeding with ellagic acid.The egg reduction rates of the 30th and 60th days of test group Ⅰ were 30.10% and 42.97%, respectively.The egg reduction rates in test group Ⅱ were 37.51% and 49.86%, respectively.【Conclusion】 Under the experimental conditions, the supplementary feeding of ellagic acid to suckling foals could significantly reduce the parasite infection and the output of Trichodon tenuis, Strongylus equi, Parascaris equi and Strongylus westermani in feces, and the supplementary feeding dose of 30 mg/kg BW was more effective.

Key words: ellagic acid; lactating foals; anthelmintic effect

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