The interpretation of faecal egg-counts

1967 ◽  
Vol 28 (3) ◽  
pp. 211-218 ◽  
Author(s):  
M. R. Honer
Keyword(s):  
Faecal Egg Counts

A field survey on the distribution of strongyle infections of horses in Sweden and factors affecting faecal egg counts

1999 ◽  
Vol 31 (1) ◽  
pp. 68-72 ◽  
Author(s):  
E. OSTERMAN LIND ◽  
J. HÖGLUND ◽  
B.-L. LJUNGSTRÖM ◽  
O. NILSSON ◽  
A. UGGLA
Keyword(s):  
Field Survey ◽  
Factors Affecting ◽  
Faecal Egg Counts

The influence of dietary carbohydrates on experimental infection withTrichuris suisin pigs

Parasitology ◽  
2005 ◽  
Vol 132 (6) ◽  
pp. 857-865 ◽  
Author(s):  
L. E. THOMSEN ◽  
S. PETKEVIČIUS ◽  
K. E. BACH KNUDSEN ◽  
A. ROEPSTORFF
Keyword(s):  
Sugar Beet ◽  
Experimental Infection ◽  
Diet Group ◽  
The Other ◽  
Post Inoculation ◽  
Dietary Carbohydrates ◽  
Barley Flour ◽  
Faecal Egg Counts ◽  
The Difference ◽  
Fermentable Carbohydrates

Two experiments (Exps 1 and 2) were carried out to study the effect of dietary carbohydrates on the establishment ofTrichuris suisin pigs. Two experimental diets based on barley flour were used; Diet 1 was supplemented with non-fermentable carbohydrates from oat hull meal, while Diet 2 was supplemented with fermentable carbohydrates from sugar beet fibre and inulin. In Exp. 1, thirty-two pigs were allocated randomly into 4 groups. Two groups were fed Diet 1 and 2 groups were fed Diet 2. Pigs from one of each diet group were inoculated with 2000 infectiveT. suiseggs each and the other two groups were uninfected controls. All pigs were slaughtered 8 weeks post-inoculation (p.i.). In Exp. 2, twenty-four pigs were allocated randomly into 2 groups and fed Diet 1 or Diet 2, respectively. All the pigs were inoculated with 2000 infectiveT. suiseggs. Six pigs from each group were slaughtered 8 weeks p.i. and the remaining 6 pigs from each group were slaughtered 12 weeks p.i. Infections were followed by faecal egg counts and worm burdens were assessed at necropsy. Pigs fed Diet 2 had lower egg counts in both experiments; in Exp. 2 the difference was significant (P<0·05). No differences were found in worm burdens 8 weeks p.i. in both experiments, however, worms from pigs on Diet 2 were significantly shorter (P<0·0001). Pigs fed Diet 2 and slaughtered 12 weeks p.i. had significantly lower worm counts (P<0·01) compared to pigs fed Diet 1. The results indicate that fermentable carbohydrates do not affect the establishment ofT. suisin naïve pigs, but result in earlier expulsion and reduced growth of the established worms. Thus, diets with highly fermentable carbohydrates may be used in the control ofT. suis.

Re: Faecal egg counts as a guide for drench use

2002 ◽  
Vol 50 (3) ◽  
pp. 124-124
Author(s):  
A Vlassoff ◽  
ACG Heath ◽  
DM Leathwick
Keyword(s):  
Faecal Egg Counts

Effects of aggregation and sample size on composite faecal egg counts in sheep

2005 ◽  
Vol 131 (1-2) ◽  
pp. 79-87 ◽  
Author(s):  
E.R. Morgan ◽  
L. Cavill ◽  
G.E. Curry ◽  
R.M. Wood ◽  
E.S.E. Mitchell
Keyword(s):  
Sample Size ◽  
Faecal Egg Counts

scholarly journals Reduction rate of nematode egg counts and third-stage larvae development from sheep and goat faeces preserved at 4οC

2018 ◽  
Vol 67 (3) ◽  
pp. 177 ◽  
Author(s):  
A. DRIMTZIA ◽  
E. PAPADOPOULOS
Keyword(s):  
Reduction Rate ◽  
Small Ruminants ◽  
Storage Period ◽  
Gastrointestinal Nematode ◽  
Sheep And Goats ◽  
Nematode Parasites ◽  
Faecal Samples ◽  
Third Stage ◽  
Faecal Egg Counts ◽  
Larvae Development

Gastrointestinal nematode parasites cause major production losses to small ruminants. The most common way to diagnose or monitor the worm burdens in sheep and goats remains the quantitative parasitological examinations, i.e. the faecal egg counts. However, the reliability of the results of such methods depends greatly on the conditions and duration of the storage of the faecal samples prior to examination. The aim of this research was to evaluate the reduction rate and the maximum storage period, without significant losses, of nematode egg counts and third-stage larvae development from sheep and goat faeces preserved at 4οC. Towards this end, a pooled faecal sample was formed by collecting faeces from naturally infected sheep and goats (separately). Faecal egg counts and coprocultures were performed on fresh faeces and on preserved ones every week and up to 119 days post sampling. It was concluded that the preservation at 4oC, i.e. into a refrigerator, of fresh faeces from sheep and goats for parasitological examinations poses danger of misdiagnosis, if not performed in a period not exceeding 3 weeks of time. The rate of reduction of the faecal nematode egg counts starts to be significant lower than the ones performed with fresh samples, for both sheep and goats, after the third week of storage. The percentage of the gastrointestinal nematode larvae developing to the infective third–stage alters significantly for the Haemonchus genus, soon after the first week of storage (p<0.05).

scholarly journals 159 The effect of multispecies swards on parasite faecal egg counts of grazing lambs

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 170-170
Author(s):  
Romina A Rodriguez ◽  
Cornelia Grace ◽  
Mary B Lynch ◽  
Helen Sheridan ◽  
Stephen Lott ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Perennial Ryegrass ◽  
White Clover ◽  
Repeated Measures ◽  
Perennial Grass ◽  
Red Clover ◽  
The Other ◽  
Birdsfoot Trefoil ◽  
Faecal Egg Counts

Abstract Multispecies swards (MSS) for ruminants are increasing in popularity in temperate regions. The objective of this study was to evaluate the effect of MSS containing grasses, legumes and herbs on lambs faecal egg counts (FEC) compared to a perennial ryegrass monoculture. Over two years (2015 and 2016) lambs (n = 60 per year, n = 120 in total per treatment) grazed one of four sward types. The treatments were: perennial ryegrass only (PRG), perennial grass and white clover (PRGWC), six species sward (perennial ryegrass, timothy, plantain, chicory, white and red clover; 6S) and nine species (9S) additional to the 6S were cocksfoot, greater birdsfoot trefoil and yarrow. Feces samples were collected fortnightly commencing when lambs were six weeks old and FEC were determined by the modified McMaster procedure for quantifying Nematodirus and Trichostrongylus eggs. All lambs were treated with anthelmintic at 12 weeks of age and subsequent anthelmintic treatments were administered when a threshold of 400 egg per gram (epg) was reached. The statistical analysis used was a repeated measures model in PROC MIXED of SAS. Nematodirus FEC did not differ with treatment (P &gt; 0.05). Trichostrongylus FEC was influenced by sward type (P &lt; 0.05), the lambs grazing the PRG sward displaying higher FEC, while the lambs grazing the 9S sward displaying lower FEC compared to other treatments. The lambs offered PRG required fewer days in reach the 400 epg threshold compared to the other treatments (P &lt; 0.05) that did not differ. The repeatability of FEC from one date to the next date was 21.54% and 11.85% for Nematodirus and Trichostrongylus respectively, being considered low. The correlation between FEC (Nematodirus) and ADG (weaning-slaughter) was positive (0.1377), but FEC (Trichostrongylus) and ADG correlation was negative (-0.1084). These results suggest that lambs offered the 9S treatment had lower FEC of Trichostrongylus eggs compared to PRG.

Eosinophilia as a marker of resistance to Teladorsagia circumcincta in Scottish Blackface lambs

Parasitology ◽  
2002 ◽  
Vol 124 (5) ◽  
pp. 553-560 ◽  
Author(s):  
M. J. STEAR ◽  
N. G. HENDERSON ◽  
A. KERR ◽  
Q. A. MCKELLAR ◽  
S. MITCHELL ◽  
...  
Keyword(s):  
Peripheral Blood ◽  
Gastrointestinal Nematodes ◽  
Blood Eosinophil ◽  
Peripheral Blood Eosinophil ◽  
Teladorsagia Circumcincta ◽  
Peripheral Eosinophil ◽  
Faecal Egg Counts ◽  
Eosinophil Counts

Faecal egg counts and peripheral blood eosinophil counts were taken from Scottish Blackface lambs following natural, predominantly Teladorsagia circumcincta infection. Peripheral eosinophil concentrations were higher in animals with lower egg counts but only in lambs that were at least 3 months of age. The reduced egg counts were due to reduced fecundity of T. circumcincta; there was no association with the number of adult T. circumcincta. Associations with the number of parasites from other species of gastrointestinal nematodes appeared to be neutral or favourable. Estimated heritabilities for eosinophil concentrations in 4- and 5-month-old lambs were 0·48±0·16 and 0·43±0·17, respectively. Therefore, under defined circumstances, eosinophil concentrations may be a useful indicator of resistance to predominantly T. circumcincta infection.

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