A multi-country study to assess the effect of a treatment with moxidectin pour-on during the dry period on milk production in dairy cows

Geurden, Thomas; Bartram, David; Vanimisetti, Hima Bindu; Fanke, Jane; Camuset, Philippe; Devos, J.; Sawyer, Andrew J.; Samson‐Himmelstjerna, Georg von; Demeler, Janina; Charlier, Johannes

doi:10.1016/j.vetpar.2017.02.010

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…Research competed in Europe has illustrated that higher ODR vat readings are associated with herds that have spent more time grazing [4]. Many studies investigating milk response to anthelmintics have been conducted in herds where cows are housed indoors for periods of the year [2], [5], [6], or when antibodies have been tested on individual milk samples [7]. An observational study in 2005 suggested that there was a negative relationship between ODR and milk production [8].…”

Section: Introductionmentioning

confidence: 99%

Faecal egg counts and bulk milk Anti-O. ostertagi antibody testing in pasture based dairy cattle of Victoria, Australia

Loughnan

Beggs

2022

Preprint

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Background:International research has suggested that anti Ostertagia ostertagi antibody optical density ratio (ODR) of vat milk can indicate the level of milk production benefit producers will get from applying effective anthelmintic treatments to lactating dairy cows. ODR is an indirect antibody ELISA assessment of the magnitude of antibody production specific to O. ostertagi. In Australian pastoral dairy systems, the worm challenge season can be prolonged with high rainfall temperate climates where lactating cattle and young stock are grazing year-round. The objective of this study was to look for a correlation between ODR and faecal egg count (FEC) or the presence of parasite eggs in faeces in corresponding cohorts.Methods:Fourteen commercial dairy herds in south-west Victoria (Australia) were sampled in the study. Faecal samples were collected from recently calved cows (less than 30 days in milk) for individual FEC (sensitive to 2.5 eggs per gram of faeces) Fifteen primiparous and 15 multiparous animals of representative ages were sampled. On the same day, milk vat samples were collected during the calving period for ODR. Farm management practices including recent and routine anthelmintic use was recorded for each property and each cohort of animals.Results:Bulk milk ODR was not related to measurable FEC in corresponding herds. Bulk milk ODR was also not related to the proportion of animals in each corresponding cohort with detected parasite eggs in faeces. Bulk milk ODR was strongly correlated with days since most recent anthelmintic application (r2=0.73).Conclusion:Anti-O. ostertagi ODR is a good measure of likely antibody presence against O. ostertagi. However, in pastoral systems in Australia where worms are present on pasture for sustained periods, possibly year-round, it may not be a good measure of current parasite load. ODR should not be used as the sole determinant of anthelmintic application in Victorian pastoral dairy herds.

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Section: Introductionmentioning

confidence: 99%

Faecal egg counts and bulk milk Anti-O. ostertagi antibody testing in pasture based dairy cattle of Victoria, Australia

Loughnan

Beggs

2022

Preprint

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“…Favorable reservoirs are controlled by facies belts (Wendt et al, 2017), the exploration of volcanic gas reservoirs is rather difficult. In order to identify the macroscopic rules of the distribution of volcanic reservoirs in different stages of the study area, in order to guide the exploration of volcanic rocks, this paper divides the eruption characteristics of volcanic rocks in Songliao basin into cycles (Geurden et al, 2017). Due to the less drilling and core data in the study area, the virtual reality technology was used to collect the three-dimensional scene data of Songliao Basin, and the characteristics of the distribution and evolution of each sub volcano were obtained.…”

Section: Introductionmentioning

confidence: 99%

Eruption Cycle of Volcanic Rocks Based on Virtual Reality Technology

Yang

Wang

2020

Earth sci. res. j.

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The eruption cycle of volcanic rocks based on virtual reality technology is studied to reveal the spatial distribution of volcanic rocks and the genetic relationship between different lithologic assemblages, and effectively guide volcanic exploration. Taking Xujiaweizi fault depression and Yingshan depression in Songliao Basin as the research area, the monocular vision method of virtual reality technology is used to collect data from the study area. Then, the three-dimensional dynamic scene of the study area was constructed. Based on this, combined with the research steps and division basis of the volcanic eruption cycle, the eruption cycle of the volcanic region in the study area is studied. According to the characteristics of volcanic activity, volcanic facies sequence, and rock rhythm combination in Xujiaweizi fault depression, the first and three sections of Yingcheng formation are divided into three eruption periods according to the contact relationship between sedimentary strata and volcanic rocks in the eruptive intermittent period. Y1C1, Y1C2, Y1C3, Y3C1, Y3C2, and Y3C3 are respectively from bottom to top. Yingshan volcanic rocks in Yingshan depression are divided into three cycles and six periods. Each stage has significant stages and differences, and the eruption intensity is different. The overall performance is gradually enhanced, and the internal cycle is characterized by the first strong and then weak.

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The effect of mid-lactation treatment with topically applied eprinomectin on milk production in nine New Zealand dairy farms

Lawrence

Tulley²,

Scott

et al. 2017

Veterinary Parasitology: Regional Studies and Reports

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A multi-country study to assess the effect of a treatment with moxidectin pour-on during the dry period on milk production in dairy cows

Cited by 6 publications

References 23 publications

Faecal egg counts and bulk milk Anti-O. ostertagi antibody testing in pasture based dairy cattle of Victoria, Australia

Faecal egg counts and bulk milk Anti-O. ostertagi antibody testing in pasture based dairy cattle of Victoria, Australia

Eruption Cycle of Volcanic Rocks Based on Virtual Reality Technology

The effect of mid-lactation treatment with topically applied eprinomectin on milk production in nine New Zealand dairy farms

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