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Macrae AI, Burrough E, Forrest J, Corbishley A, Russell G, Shaw DJ. Risk factors associated with excessive negative energy balance in commercial United Kingdom dairy herds. Vet J 2019; 250:15-23. [PMID: 31383415 DOI: 10.1016/j.tvjl.2019.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 06/07/2019] [Accepted: 06/08/2019] [Indexed: 11/25/2022]
Abstract
This study assessed risk factors associated with excessive negative energy balance (eNEB) in UK dairy cows between April 2006 and March 2015. Blood samples were analysed for β-hydroxybutyrate (BHB), non-esterified fatty acids (NEFA) and glucose. Following removal of all potential duplicate cows, a final dataset of 69,161 unique individual cows was obtained including biochemical results, individual cow and feed data. Generalised linear mixed-effect models and multivariable classification tree-based models showed that individual cow risk factors for eNEB included: (1) days relative to predicted calving date (dry cows); (2) days in milk (lactating cows); (3) body condition score (BCS; lactating cows ≥ BCS 4; OR 2.1); (4) milk yield (around 40 L per day); (5) parity (first lactation heifers; odds ratio [OR] 0.46 compared to older cows during lactation); and (6) chronic inflammatory conditions as assessed by globulin concentrations ≥ 50 g/L (OR 0.79 for cows with evidence of chronic inflammation). There was a higher prevalence during April to October (OR 1.19), and the lowest prevalence was in November. Feeding grass silage and wholecrop (silage made from cereal crops) to dry cows was associated with a reduced prevalence of eNEB, whereas access to grazed grass was associated with a higher prevalence in both the dry period (OR 1.32) and lactation (OR 1.33). Knowledge of the risk factors associated with eNEB in commercial dairy herds assists in both the implementation of herd monitoring programs and reduction of eNEB in dairy herds, with associated reductions in the risk of periparturient diseases and improved dairy cow performance.
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Affiliation(s)
- A I Macrae
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland, EH25 9RG, UK.
| | - E Burrough
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland, EH25 9RG, UK
| | - J Forrest
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland, EH25 9RG, UK
| | - A Corbishley
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland, EH25 9RG, UK
| | - G Russell
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland, EH25 9RG, UK
| | - D J Shaw
- Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland, EH25 9RG, UK
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Macrae AI, Burrough E, Forrest J, Corbishley A, Russell G, Shaw DJ. Prevalence of excessive negative energy balance in commercial United Kingdom dairy herds. Vet J 2019; 248:51-57. [PMID: 31113563 DOI: 10.1016/j.tvjl.2019.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 04/01/2019] [Accepted: 04/01/2019] [Indexed: 11/25/2022]
Abstract
The objectives of this study were to determine the individual animal and herd level prevalence of excessive negative energy balance (eNEB) in commercial UK dairy herds. Between April 2006 and March 2015, blood samples from 84,369 individual cows from 1748 different UK farms were received by a commercial laboratory service specializing in dairy cow nutritional monitoring. Following removal of all potential duplicate cows, the final dataset comprised 69,161 unique individual cows. The prevalence of eNEB was determined using plasma thresholds of β-hydroxybutyrate (BHB), non-esterified fatty acids (NEFA) and glucose. Overall prevalence of subclinical ketosis (SCK) in the first 20 days of lactation was 28.5%, 17.3% and 11.7% using BHB thresholds of 1.0, 1.2 and 1.4 mmol/L respectively. Prevalence of NEFA values ≥0.5 mmol/L in the last 10 days prior to calving was 26.0%, and 40.3% of cows had NEFA values ≥0.7 mmol/L in the first 20 days in milk (DIM). Combining BHB, NEFA and glucose showed that 52.0% of cows had one or more of the three biochemical measures of energy balance outside the respective threshold value in the last 10 days pre-calving, and 75.2% of cows showed a similar biochemical pattern in the first 20 DIM. The median herd prevalence of elevated BHB and/or NEFA was 37.5% in late pregnancy and 59.8% in the first 20 DIM, with substantial herd variation. Using multiple measures for the assessment of energy balance, this study has shown that eNEB affects substantial numbers of UK dairy cows.
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Affiliation(s)
- A I Macrae
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK; Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK.
| | - E Burrough
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK; Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK
| | - J Forrest
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK; Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK
| | - A Corbishley
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK; Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK
| | - G Russell
- Dairy Herd Health and Productivity Service, Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK; Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK
| | - D J Shaw
- Royal (Dick) School of Veterinary Sciences and the Roslin Institute, The University of Edinburgh, Easter Bush Campus, Roslin, Midlothian, Scotland EH25 9RG, UK
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Gabler N, Helm E, DeMille C, Curry S, Schweer W, Lonergan S, Loving C, Schwartz K, Burrough E. 501 Immunometabolism responses to disease in pigs and its impact on feed efficiency. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- N Gabler
- Iowa State University,Ames, IA, United States
| | - E Helm
- Iowa State University,Ames, IA, United States
| | - C DeMille
- Iowa State University,Ames, IA, United States
| | - S Curry
- ORISE Postdoctoral Researcher, Oak Ridge, TN, United States
| | - W Schweer
- Iowa State University,Ames, IA, United States
| | - S Lonergan
- Iowa State University,Ames, IA, United States
| | - C Loving
- USDA-ARS-National Animal Disease Center,Ames, IA, United States
| | - K Schwartz
- Iowa State University,Ames, IA, United States
| | - E Burrough
- Iowa State University,Ames, IA, United States
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Abstract
Senecavirus A (SVA) is the only member of the genus Senecavirus within the family Picornaviridae. This virus was discovered as a serendipitous finding in 2002 (and named Seneca Valley virus 001 [SVV-001]) while cultivating viral vectors in cell culture and has been proposed for use as an oncolytic virus to treat different types of human neoplasia. SVA was found in lesions in pigs affected by porcine idiopathic vesicular disease in Canada and the USA in 2008 and 2012, respectively. In 2014 and 2015, SVA infection was associated with outbreaks of vesicular disease in sows as well as neonatal pig mortality in Brazil and the USA. Phylogenetic analysis of the SVA VP1 indicates the existence of 3 clades of the virus. Clade I contains the historical strain SVV-001, clade II contains USA SVA strains identified between 1988 and 1997, and clade III contains global SVA strains from Brazil, Canada, China, and the USA identified between 2001 and 2015. The aim of this review is to draw the attention of veterinarians and researchers to a recently described infectious clinical-pathologic condition caused by a previously known agent (SVA). Apart from the intrinsic interest in a novel virus infecting pigs and causing economic losses, the major current concern is the similarity of the clinical picture to that of other swine diseases, because one of them-foot and mouth disease-is a World Organization for Animal Health-listed disease. Because the potential association of SVA with disease is rather new, there are still many questions to be resolved.
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Affiliation(s)
- J Segalés
- 1 UAB, Centre de Recerca en Sanitat Animal (CReSA), IRTA-UAB, Campus de la Universitat Autònoma de Barcelona, Spain.,2 Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona, Spain
| | - D Barcellos
- 3 Departamento de Medicina Animal, Federal University of Rio Grande do Sul/UFRGS, Porto Alegre, RS, Brazil
| | - A Alfieri
- 4 Laboratory of Animal Virology, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - E Burrough
- 5 Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - D Marthaler
- 6 Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, USA
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Dzikamunhenga RS, Wilberts B, Yaeger M, Burrough E, Hostetter J, Bender H, Larson W, Griffith RW. Safety evaluation of lasalocid use in Chinese ring-necked pheasants (Phasianus colchicus). Avian Dis 2014; 57:188-91. [PMID: 24689172 DOI: 10.1637/10320-080612-reg.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Coccidiosis remains a significant threat to the welfare of game farm-reared pheasants in the United States. Although lasalocid has been demonstrated to be effective against pheasant specific coccidia, information regarding its safety in this species is lacking. The purpose of this study was to gather data on the safety of lasalocid when fed to Chinese ring-necked pheasants at one, two, and three times the recommended high dose of lasalocid used for prevention of coccidiosis in other poultry at three times the normal treatment period. Pheasant chicks (approximately 1 day-old; n = 160) were randomly blocked by sex into four treatment groups and given their respective diets continuously for 6 wk. No significant differences were observed in overall feed consumption, weight gain, feed conversion rates, clinical pathology measurements, or tissue gross and histopathologic evaluations between controls and treatment groups associated with lasalocid administration. Based on the results of this study it appears that lasalocid fed at the recommended rate of 125 ppm is safe in Chinese ring-necked pheasants.
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Livesey CT, Payne JH, Sayers AR, Whitaker DA, Burrough E, Macrae AI. Thyroxine concentrations in ruminant health monitoring and diagnostic blood samples. Vet Rec 2014; 174:47. [DOI: 10.1136/vr.101498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- C. T. Livesey
- Chris Livesey Consulting; Givendale House Leppington Malton YO17 9RL UK
| | - J. H. Payne
- AHVLA Sutton Bonington; The Elms Sutton Bonington Loughborough LE12 5RB UK
| | - A. R. Sayers
- AHVLA Weybridge; Woodham Lane, New Haw Addlestone Surrey KT15 3NB UK
| | - D. A. Whitaker
- Dairy Herd Health and Productivity Service; Royal (Dick) School of Veterinary Studies and the Roslin Institute; University of Edinburgh; EBVC, Easter Bush Roslin Midlothian EH25 9RG UK
| | - E. Burrough
- Dairy Herd Health and Productivity Service; Royal (Dick) School of Veterinary Studies and the Roslin Institute; University of Edinburgh; EBVC, Easter Bush Roslin Midlothian EH25 9RG UK
| | - A. I. Macrae
- Dairy Herd Health and Productivity Service; Royal (Dick) School of Veterinary Studies and the Roslin Institute; University of Edinburgh; EBVC, Easter Bush Roslin Midlothian EH25 9RG UK
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Abstract
Between April 1999 and March 2004, metabolic profile analyses were performed on individual blood samples from 35,506 dairy cattle in the UK. Assessment of the cows' energy status by the analysis of plasma samples for beta-hydroxybutyrate, glucose and non-esterified fatty acids showed that 70.4 per cent of the cows in early lactation (10 to 20 days calved), 57.1 per cent of the cows in mid-lactation (51 to 120 days calved) and 57.7 per cent of the dry cows within 10 days of their predicted calving date had one or more energy metabolites outside the optimum range; in addition, 16 per cent of the cows in early lactation, 5.6 per cent of those in mid-lactation and 20.5 per cent of the dry cows within 10 days of their predicted calving date had a low plasma urea nitrogen concentration, indicating poor intakes of effective rumen-degradable protein. Abnormalities in the concentrations of magnesium, inorganic phosphate, copper, selenium and iodine were relatively uncommon. The transitional period, particularly in late pregnancy, was commonly identified as a constraint on productivity. Nutritional problems were most commonly associated with poor feed intakes and poor feed management, rather than with the formulation of the rations.
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Affiliation(s)
- A I Macrae
- Dairy Herd Health and Productivity Service, Division of Veterinary Clinical Studies, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG
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Abstract
Data derived over four years from 434 dairy herds in 1998/99 to 244 in 2001/02 revealed average disposal rates of 22.6 per cent per year, half of which were for poor fertility, mastitis and lameness. The quartile of herds with the lowest disposal rates sold an average of 11.5 per cent annually and the quartile with the highest rates sold 35.5 per cent. Average annual disease rates over the four years were as follows: for assisted calving 7.8 per cent, for digestive disease 1.2 per cent, for ketosis 0.5 per cent, for hypomagnesaemia 0.5 per cent, for hypocalcaemia 5.0 per cent and for injuries 0.8 per cent. The incidence of mastitis increased from 36.0 to 43.3 per cent of cows per year. The incidence of lameness decreased from 23.3 per cent in 1998/99 to 20.7 per cent in 2000/01 but increased to 21.9 per cent in 2001/02. Data received from the same 219 farms during the first three years showed no effective differences from the full set of data for each of the three years. The lowest annual incidences of mastitis and lameness on individual farms were below 7 per cent and 2.5 per cent, respectively. In general, housing cows in cubicles was associated with a greater risk of lameness, and housing them in straw yards with a greater risk of mastitis. However, some of the lowest rates of lameness were recorded in cubicle-housed cows and some of the lowest rates of mastitis were recorded in cows housed in yards. Larger herds were not associated, in general, with higher rates of mastitis.
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Affiliation(s)
- D A Whitaker
- Division of Veterinary Clinical Studies, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Veterinary Centre, Roslin
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