Effects of anthelmintic treatment on milk production in Sarda dairy ewes naturally infected by gastrointestinal nematodes

Sechi, Stefania; Giobbe, M; Sanna, G.; Casu, Sara; Carta, Antonello; Scala, Antonio

doi:10.1016/j.smallrumres.2009.12.022

Cited by 17 publications

(15 citation statements)

References 16 publications

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“…The situation regarding potential effects on milk composition is not clear. Cruz-Rojo et al (2012) have described that milk from ewes with gastrointestinal nematode parasitism had lower fat and total protein content during the last stage of lactation, but Sechi et al (2010) have not found a significant effect of parasitism on milk composition.…”

Section: Milk Yield and Milk Compositionmentioning

confidence: 97%

Interactions between parasitic infections and reproductive efficiency in sheep

Fthenakis

Mavrogianni

Gallidis

et al. 2015

Veterinary Parasitology

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This review article summarises the many reports in the literature, confirming that, in sheep, parasitic infections can adversely affect reproductive efficiency; examples, which refer to all parts of the reproductive cycle of sheep, are as follows: trichostrongylosis in ewe-lambs (which can lead to delayed attainment of puberty), myiosis of the prepuce (which can cause impediment of mating), chorioptic mange or trypanosomosis in rams (which can lead to testicular degeneration or azoospermia, respectively), trypanosomosis or sarcoptic mange in pre-conceptual ewes (which can lead to poor conception rates or reduced number of ovulations, respectively), toxoplasmosis or neosporosis in pregnant ewes (which are causes of abortion), trichostrongylosis or trematode infections in lactating ewes (which can cause reduction of milk yield and can be a risk factor for mastitis, respectively), cryptosporidiosis in newborn lambs (which can be a cause of deaths), coccidiosis in growing pre-weaned lambs (which can cause suboptimal growth rate). In other cases, the reproductive status of the animal can influence the parasitic infection; examples are as follows: the increase in faecal parasitic output during the peri-parturient period (as a consequence of the peri-parturient relaxation of immunity), the heavier trichostrongylid infections of twin lambs compared to lambs from single parities (as a consequence of developmental origin issues in twin lambs). All the above examples support the idea of presence of interactions between parasitic infections and reproductive efficiency in sheep.

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Section: Milk Yield and Milk Compositionmentioning

confidence: 97%

Interactions between parasitic infections and reproductive efficiency in sheep

Fthenakis

Mavrogianni

Gallidis

et al. 2015

Veterinary Parasitology

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“…Effective anthelmintic treatment of infected dairy ewes appears to lead to longer milking periods ( Suarez et al, 2009 ), improved lactation persistence ( Fthenakis et al, 2005 ) and lower somatic cell counts ( Arsenopoulos et al, 2019 ), whereas effects of GIN infections on milk components are not consistent across studies. While Sechi et al (2010) did not find effects of GIN infection on milk components, Cruz-Rojo et al (2012) reported lower total milk protein contents.…”

Section: Introductionmentioning

confidence: 61%

Potentials of using milk performance data and FAMACHA score as indicators for Targeted Selective Treatment in Lacaune dairy sheep in Switzerland

Schwarz

Bapst²,

Holinger

et al. 2020

Veterinary Parasitology

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“…U owiec kokcydioza często przebiega bezobjawowo, nie pozostając jednak bez wpływu na kondycję zwierząt. W przebiegu inwazji uszkodzeniu ulega nabłonek jelita, co upośledza wchła-nianie składników odżywczych z pokarmu, w konsekwencji prowadząc do zmniejszenia opłacalności produkcji mięsa, mleka i wełny (5,9,17). Kliniczny przebieg eimeriozy występuje prawie wyłącznie u jagniąt.…”

Section: Dynamics Of Lamb Coccidiosis In Indoor Management Systemsunclassified

“…Doniesienia literaturowe oraz wyniki badań włas-nych wskazują, iż u jagniąt utrzymywanych w alkierzowych systemach hodowli ekstensywność kokcydiozy może sięgać ponad 90%. Warto zaznaczyć, że mało intensywne inwazje mogą przebiegać bezobjawowo, jednak nieleczone mogą być przyczyną strat ekonomicznych (9,10,17). Intensywność inwazji nasila się pomiędzy pierwszym a drugim miesiącem życia, a w późniejszym okresie obserwuje się stałą, lecz niską liczbę wydalanych oocyst.…”

Section: Wyniki I Omówienieunclassified

Dynamics of lamb coccidiosis in indoor management systems

Szczepaniak¹,

Studzińska²,

Jankuszew³

et al. 2018

Medycyna Weterynaryjna

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SummaryInvasions of protozoa belonging to the genus Eimeria are a global problem in sheep farming. The clinical course of eimeriosis occurs almost exclusively in lambs. In adult sheep coccydiosis often has an asymptomatic course which, however, is not without an impact on animal conditions. Large flock density and related contamination of the environment with oocysts is conducive to a high extensiveness of the invasion. The aim of the study was to analyze the prevalence and intensity of Eimeria invasion in lambs kept in confined management systems in order to establish the key periods of the course of invasions and schedules for prevention programs. The parasitological examination was conducted on samples of feces collected directly from the rectum of 96 lambs every 14 days at the following time points: the 28 th , 42 nd , 56 th , 70 th and 100 th days of life. The assessment involved the invasion extensity established using a flotation method and invasion intensity expressed as the number of oocysts per gram of feces (OPG) established by using the McMaster technique. On the basis of morphometric parameters of isolated oocysts, the species of coccidia in the studied animals were determined. During the whole study period, the invasion extensity grew from the minimum of 17.6% (CI ± 95%; 9.6-25.6) on day 28 to the maximum of 95.9% (CI ± 95%; 95.3-100.0) on day 100. The average growth in the invasion extensity in the flock was 19.6% every 14 days. The average invasion intensity in the study period was 3039.2 OPG (min-max 50-58,800; SEM 440.2), with the highest excretion of oocysts observed on day 42 of the lambs' life. The average OPG value on this day was 6783.8, and dropped at subsequent measurement points. The experiment revealed exclusively multi-species invasions. In total, seven species of coccidia were found in the studied animals within the study period. These were: E. bakuensis, E. faurei, E. intricata, E. ovinoidalis, E. pallida, E. parva and E. crandallis.

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Effects of anthelmintic treatment on milk production in Sarda dairy ewes naturally infected by gastrointestinal nematodes

Cited by 17 publications

References 16 publications

Interactions between parasitic infections and reproductive efficiency in sheep

Interactions between parasitic infections and reproductive efficiency in sheep

Potentials of using milk performance data and FAMACHA score as indicators for Targeted Selective Treatment in Lacaune dairy sheep in Switzerland

Dynamics of lamb coccidiosis in indoor management systems

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