Health knowledge and infection control by event horse owners

Infection control and quarantine measures are essential to minimise the impact of equine infectious diseases, but their uptake by equestrians involved with sport horses in the United Kingdom is undocumented. Using a questionnaire, this study aimed to: i) determine the knowledge and practices of eventing equestrians about their horses’ health and the clinical signs of endemic and exotic equine infectious diseases and ii) assess existing infection control and quarantine measures on event horse yards. A questionnaire was designed, piloted and distributed electronically over six weeks. The target respondents were equestrians involved in eventing, including jumping their horses over fences either 100cms. Data were described qualitatively and analysed statistically to identify any relationships between selected parameters. A total of 146 responses were analysed. The majority of respondents were female, involved as amateurs in eventing and their veterinary surgeon was the first choice for advice. To assess temperature,owners often used touch, but rectal temperature was taken rarely. The majority of horses were vaccinated against tetanus and influenza but a minority against EHV-1/-4. Most respondents identified the clinical signs of influenza and Streptococcus equi, but were less certain about EHV-1/-4. Only 30.1% of respondents had access to quarantine facilities, which were significantly more likely to be available in professional yards (p=0.043) and in riders competing above the 100cm level (p=0.0003). Professionals competing their horses above 100cm were significantly more likely to have quarantine facilities (p<0.05). A majority of yards with quarantine facilities isolated new horses for 2-4 weeks. Facilities included a separate stable (81.8%) or field (68.2%), but separate equipment (47.7%) and access to disinfectant (36.4%) were available less frequently. In conclusion, amateur equestrians involved in eventing require better education on the routine use of infection control and quarantine measures to minimise the impact of equine infectious diseases and thus strengthen infection control nationally

Health knowledge and infection control by event horse owners

Infection control and quarantine measures are essential to minimise the impact of equine infectious diseases, but their uptake by equestrians involved with sport horses in the United Kingdom is undocumented. Using a questionnaire, this study aimed to: i) determine the knowledge and practices of eventing equestrians about their horses’ health and the clinical signs of endemic and exotic equine infectious diseases and ii) assess existing infection control and quarantine measures on event horse yards. A questionnaire was designed, piloted and distributed electronically over six weeks. The target respondents were equestrians involved in eventing, including jumping their horses over fences either 100cms. Data were described qualitatively and analysed statistically to identify any relationships between selected parameters. A total of 146 responses were analysed. The majority of respondents were female, involved as amateurs in eventing and their veterinary surgeon was the first choice for advice. To assess temperature,owners often used touch, but rectal temperature was taken rarely. The majority of horses were vaccinated against tetanus and influenza but a minority against EHV-1/-4. Most respondents identified the clinical signs of influenza and Streptococcus equi, but were less certain about EHV-1/-4. Only 30.1% of respondents had access to quarantine facilities, which were significantly more likely to be available in professional yards (p=0.043) and in riders competing above the 100cm level (p=0.0003). Professionals competing their horses above 100cm were significantly more likely to have quarantine facilities (p<0.05). A majority of yards with quarantine facilities isolated new horses for 2-4 weeks. Facilities included a separate stable (81.8%) or field (68.2%), but separate equipment (47.7%) and access to disinfectant (36.4%) were available less frequently. In conclusion, amateur equestrians involved in eventing require better education on the routine use of infection control and quarantine measures to minimise the impact of equine infectious diseases and thus strengthen infection control nationally

The efficacy of supplying supplemental cobalt, selenium and vitamin B₁₂ via the oral drench route in sheep

Cobalt and selenium are essential trace elements required for ruminants. There are many different methods of supplementation available to sheep including boluses, in feed, free access minerals, pasture dressing and oral drenches. Recent changes in European legislation have resulted in a reduction in the maximum permitted level (MPL) of cobalt to be included in ruminant diets from 2 mg/kg at 88% DM to 1 mg/kg at 88% DM with a suggested supplementary rate of 0.3 mg Co/kg at 88% DM. This study aimed to determine the efficacy of cobalt plus/minus vitamin B₁₂ and selenium supplementation from oral drenching over a 13 day time period. Seven groups of grass silage fed Suffolk cross mule lambs (n=56) were randomly allocated to one of 7 treatments, a 5 ml oral drench containing 700, 2300, 12000 mg Co/l, with or without 2300 mg vitamin B₁₂/l in a factoral design, with an additional control group which received no drench. All drenches also contained selenium at 625 mg/l. Lambs were weighed on days 0 and 13. The lambs were sampled by jugular venepuncture on days 0, 1, 2, 3, 4, 5, 6, 7, 9, 11 and 13, with samples analysed for plasma selenium and cobalt by ICP-MS, erythrocyte glutathione peroxidase by colourimetric assay and vitamin B₁₂ by immunoassay. The results showed that cobalt via a drench was able to raise plasma cobalt in a dose dependent manner, with each dose level significantly higher than the previous level at all post drenching time points (P<0.05). However, the cobalt containing drenches did not significantly raise vitamin B₁₂ concentrations in the plasma. Vitamin B₁₂ containing drenches were able to elevate vitamin B₁₂ in the plasma for a period of 7 days (P<0.05). The selenium content of the drench was able to significantly raise the plasma selenium from day 1 throughout the rest of the trial (day 13) (P<0.001). A significant increase in erythrocyte glutathione peroxidase activity of the sheep did eventually occur at day 13 (P<0.05). In summary, the addition of vitamin B₁₂ via the drench route resulted in a short term elevation (7 days) of plasma vitamin B₁₂ concentrations whereas cobalt sulphate alone was unable to significantly raise vitamin B₁₂ concentrations within this trial in sheep with marginally adequate cobalt status, despite elevating plasma cobalt concentrations. The drench route was also able to elevate plasma selenium concentrations from a marginal selenium status

Liver copper concentrations in cull cattle in the UK: are cattle being copper loaded?

With the release of the Department for the Environment, Food and Rural Affairs/Advisory Committee on Animal Feed Guidance Note for Supplementing Copper to Bovines it was noted that the current copper status of the national herd was not known. Liver samples were recovered from 510 cull cattle at a single abattoir across a period of three days. The samples were wet-ashed and liver copper concentrations determined by inductively coupled plasma mass spectrometry analysis. Breed, age and previous location information were obtained from the British Cattle Movement Service. Dairy breeds had higher liver copper concentrations than beef breeds. Holstein-Friesian and ‘other’ dairy breeds had 38.3 per cent and 40 per cent of cattle above the Animal Health and Veterinary Laboratories Agency (AHVLA) reference range (8000 µmol/kg dry matter), respectively, whereas only 16.9 per cent of animals in the combined beef breeds exceeded this value. It was found that underlying topsoil copper concentration was not related to liver copper content and that age of the animal also had little effect on liver concentration. In conclusion, over 50 per cent of the liver samples tested had greater-than-normal concentrations of copper with almost 40 per cent of the female dairy cattle having liver copper concentrations above the AHVLA reference range, indicating that a significant proportion of the UK herd is at risk of chronic copper toxicity

Health knowledge and infection control by event horse owners

Infection control and quarantine measures are essential to minimise the impact of equine infectious diseases, but their uptake by equestrians involved with sport horses in the United Kingdom is undocumented. Using a questionnaire, this study aimed to: i) determine the knowledge and practices of eventing equestrians about their horses’ health and the clinical signs of endemic and exotic equine infectious diseases and ii) assess existing infection control and quarantine measures on event horse yards. A questionnaire was designed, piloted and distributed electronically over six weeks. The target respondents were equestrians involved in eventing, including jumping their horses over fences either 100cms. Data were described qualitatively and analysed statistically to identify any relationships between selected parameters. A total of 146 responses were analysed. The majority of respondents were female, involved as amateurs in eventing and their veterinary surgeon was the first choice for advice. To assess temperature,owners often used touch, but rectal temperature was taken rarely. The majority of horses were vaccinated against tetanus and influenza but a minority against EHV-1/-4. Most respondents identified the clinical signs of influenza and Streptococcus equi, but were less certain about EHV-1/-4. Only 30.1% of respondents had access to quarantine facilities, which were significantly more likely to be available in professional yards (p=0.043) and in riders competing above the 100cm level (p=0.0003). Professionals competing their horses above 100cm were significantly more likely to have quarantine facilities (

The efficacy of supplying supplemental cobalt, selenium and vitamin B₁₂ via the oral drench route in sheep

Cobalt and selenium are essential trace elements required for ruminants. There are many different methods of supplementation available to sheep including boluses, in feed, free access minerals, pasture dressing and oral drenches. Recent changes in European legislation have resulted in a reduction in the maximum permitted level (MPL) of cobalt to be included in ruminant diets from 2 mg/kg at 88% DM to 1 mg/kg at 88% DM with a suggested supplementary rate of 0.3 mg Co/kg at 88% DM.This study aimed to determine the efficacy of cobalt plus/minus vitamin B₁₂ and selenium supplementation from oral drenching over a 13 day time period.Seven groups of grass silage fed Suffolk cross mule lambs (n=56) were randomly allocated to one of 7 treatments, a 5 ml oral drench containing 700, 2300, 12000 mg Co/l, with or without 2300 mg vitamin B₁₂/l in a factoral design, with an additional control group which received no drench. All drenches also contained selenium at 625 mg/l. Lambs were weighed on days 0 and 13. The lambs were sampled by jugular venepuncture on days 0, 1, 2, 3, 4, 5, 6, 7, 9, 11 and 13, with samples analysed for plasma selenium and cobalt by ICP-MS, erythrocyte glutathione peroxidase by colourimetric assay and vitamin B₁₂ by immunoassay.The results showed that cobalt via a drench was able to raise plasma cobalt in a dose dependent manner, with each dose level significantly higher than the previous level at all post drenching time points (

A reconnaissance survey of farmers’ awareness of hypomagnesaemic tetany in UK cattle and sheep farms

Hypomagnesaemic tetany (HypoMgT) in ruminants is a physiological disorder caused by inadequate intake or impaired absorption of magnesium (Mg) in the gut. If it is not detected and treated in time, HypoMgT can cause the death of the affected animal. A semi-structured questionnaire survey was conducted from July 2016–2017 to assess farmers’ awareness of HypoMgT in cattle and sheep in the UK. The questionnaire was distributed to farmers at farm business events and agricultural shows, and through a collaborative group of independent veterinary practices to their clients. Farmers were asked about (i) the incidence of presumed HypoMgT (PHT); (ii) their strategies to treat or prevent HypoMgT; (iii) mineral tests on animals, forage and soil, and (iv) farm enterprise type. A total of 285 responses were received from 82 cattle, 157 mixed cattle and sheep, and 46 sheep farmers, of whom 39% reported HypoMgT in their livestock, affecting 1–30 animals. Treatment and/or prevention against HypoMgT was reported by 96% respondents with PHT and 79% of those without. Mineral tests on animal, forage, and soil was conducted by 24%, 53%, and 66% of the respondents, respectively, regardless of PHT. There was a highly significant association between the use of interventions to tackle HypoMgT and the incidence of PHT (p < 0.01). The top three treatment/prevention strategies used were reported as being free access supplementation (149), in feed supplementation (59) and direct to animal treatments (drenches, boluses and injections) (45) although these did vary by farm type. Although some (9) reported using Mg-lime, no other pasture management interventions were reported (e.g., Mg-fertilisation or sward composition). Generally, the results indicate that UK farmers are aware of the risks of HypoMgT. A more integrated soil-forage-animal assessment may improve the effectiveness of tackling HypoMgT and help highlight the root causes of the problem

Mineral and vitamin supplementation on sheep farms: &amp;#x2028;a survey of practices and farmer knowledge

Mineral and vitamin (MV) supplementation is a routine management practice in many pasture-based systems of prime lamb production. The aim of the current study was to establish the MV supplementation practices on Irish sheep farms and farmer's knowledge and opinions in relation to supplementation strategies and MV deficiencies. A survey, consisting of 22 questions, was administered to all farmers participating in the Teagasc National Farm Survey (NFS) in 2016 which had a sheep enterprise (n = 177). The Teagasc NFS is a stratified random sample of farms with each farm assigned a weighting factor so the results are representative of the national population of farms. Sixty-nine percent of respondents supplemented their flocks with MV in addition to concentrate feed. Twenty-two percent supplemented based on laboratory analysis results (soil, herbage, blood, or tissue analysis). Thirteen percent supplemented based on veterinary advice with only 30% of this advice based on laboratory analysis results. Sixty-five percent supplemented for reasons other than laboratory analysis or veterinary advice; mainly due to tradition and previous experience. The most common stages to supplement ewes were pregnancy (78%), lactation (61%), and pre-mating (50%). Fifty-one percent supplemented lambs post weaning. Mineral buckets (free access solidified molasses-based licks containing MV and in plastic containers) and drenching (oral dosing with MV containing liquid) were the most common methods of supplementing ewes and lambs, respectively. Generic MV products (containing multiple minerals and vitamins) were the most commonly used followed by cobalt only products. Ease of use/labor requirements and cost were the most important factors influencing choice of supplementation method. Forty-six percent rated their level of knowledge on mineral requirements of sheep as "limited or no education/knowledge". Supplementation with MV did not increase (P > 0.05) ewe productivity (number of lambs reared/ewe joined) or gross margin/ewe. It is concluded that most supplementation decisions in sheep production systems are undertaken in the absence of veterinary advice or laboratory results, therefore are not evidence based. Knowledge transfer activities need to be designed to communicate best practice as regards MV supplementation

A reconnaissance survey of farmers’ awareness of hypomagnesaemic tetany in UK cattle and sheep farms

Hypomagnesaemic tetany (HypoMgT) in ruminants is a physiological disorder caused by inadequate intake or impaired absorption of magnesium (Mg) in the gut. If it is not detected and treated in time, HypoMgT can cause the death of the affected animal. A semi-structured questionnaire survey was conducted from July 2016-2017 to assess farmers' awareness of HypoMgT in cattle and sheep in the UK. The questionnaire was distributed to farmers at farm business events and agricultural shows, and through a collaborative group of independent veterinary practices to their clients. Farmers were asked about (i) the incidence of presumed HypoMgT (PHT); (ii) their strategies to treat or prevent HypoMgT; (iii) mineral tests on animals, forage and soil, and (iv) farm enterprise type. A total of 285 responses were received from 82 cattle, 157 mixed cattle and sheep, and 46 sheep farmers, of whom 39% reported HypoMgT in their livestock, affecting 1-30 animals. Treatment and/or prevention against HypoMgT was reported by 96% respondents with PHT and 79% of those without. Mineral tests on animal, forage, and soil was conducted by 24%, 53%, and 66% of the respondents, respectively, regardless of PHT. There was a highly significant association between the use of interventions to tackle HypoMgT and the incidence of PHT (p < 0.01). The top three treatment/prevention strategies used were reported as being free access supplementation (149), in feed supplementation (59) and direct to animal treatments (drenches, boluses and injections) (45) although these did vary by farm type. Although some (9) reported using Mg-lime, no other pasture management interventions were reported (e.g., Mg-fertilisation or sward composition). Generally, the results indicate that UK farmers are aware of the risks of HypoMgT. A more integrated soil-forage-animal assessment may improve the effectiveness of tackling HypoMgT and help highlight the root causes of the problem

Pregnancy Recruitment for Population Research: the National Children's Study Vanguard Experience in W ayne C ounty, M ichigan

Background To obtain a probability sample of pregnancies, the N ational C hildren's S tudy conducted door‐to‐door recruitment in randomly selected neighbourhoods in randomly selected counties in 2009–10. In 2011, an experiment was conducted in 10 US counties, in which the two‐stage geographic sample was maintained, but participants were recruited in prenatal care provider offices. We describe our experience recruiting pregnant women this way in W ayne C ounty, M ichigan, a county where geographically eligible women attended 147 prenatal care settings, and comprised just 2% of total county pregnancies. Methods After screening for address eligibility in prenatal care offices, we used a three‐part recruitment process: (1) providers obtained permission for us to contact eligible patients, (2) clinical research staff described the study to women in clinical settings, and (3) survey research staff visited the home to consent and interview eligible women. Results We screened 34 065 addresses in 67 provider settings to find 215 eligible women. Providers obtained permission for research contact from 81.4% of eligible women, of whom 92.5% agreed to a home visit. All home‐visited women consented, giving a net enrolment of 75%. From birth certificates, we estimate that 30% of eligible county pregnancies were enrolled, reaching 40–50% in the final recruitment months. Conclusions We recruited a high fraction of pregnancies identified in a broad cross‐section of provider offices. Nonetheless, because of time and resource constraints, we could enrol only a fraction of geographically eligible pregnancies. Our experience suggests that the probability sampling of pregnancies for research could be more efficiently achieved through sampling of providers rather than households.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/97525/1/ppe12047.pd