Decision tree analysis to evaluate dry cow strategies under UK conditions

Berry, Elizabeth A.; Hogeveen, H.; Hillerton, J.E.

doi:10.1017/s0022029904000433

Cited by 33 publications

(31 citation statements)

References 28 publications

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“…The previous reports stated that the DCT with antibiotics prevented infections, which occur in the first trimester of lactation (5). Conversely, in this study antibiotic treatment alone was not found to be preventive against new infections occurring in the dry period.…”

Section: Discussioncontrasting

confidence: 51%

Effectiveness of Dry Cow Therapy Comprising Antibiotic Treatment, Internal Teat Sealant, and α-Tocopherol Against New Intramammary Infections in Cows

Cengiz

Baştan

2015

Bulletin of the Veterinary Institute in Pulawy

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The aim of this study was to evaluate the preventive effectiveness of dry cow therapy based on antibiotic, internal teat sealant, and α-tocopherol administered separately or in various combinations at drying-off. The study was performed on 322 uninfected quarters of 95 cows originating from three dairy herds. The new intramammary infection rates after calving were measured to evaluate the effectiveness. The quarters were divided into six groups differing in treatment, namely: control group (group C, n = 40) and five treatment groups. Treatment groups were arranged as follows: group A (antibiotic alone, n = 81), group AS (antibiotic + sealant, n = 40), group AST (antibiotic + sealant + α-tocopherol, n = 40), group T (α-tocopherol alone, n = 40), group S (sealant alone, n = 81). New infection rate amounted to 47.5% in group C. The treatment in group AST significantly prevented from the occurrence of new intramammary infections (12.5%, P < 0.05), especially those caused by major pathogens. Antibiotic treatment alone (group A) did not prevent from new infections (34.6%, P > 0.05), although the use of the sealant alone (group S) decreased the risk of new infection (24.7%, P < 0.05). A decrease in new infection rate (25%, P < 0.05) was also observed in AS group treated with the combination of the sealant and antibiotic. α -tocopherol supplementation alone (group T) had no overall effect on new infections (35%, P > 0.05). Increased α-tocopherol level (P < 0.05) was detected after calving in the quarters from cows that received α-tocopherol injections. In conclusion, the combination of antibiotic, internal teat sealant, and α-tocopherol used in dry cow therapy showed a significantly better preventive effect against new intramammary infections, than the therapeutics administered separately.

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Section: Discussioncontrasting

confidence: 51%

Effectiveness of Dry Cow Therapy Comprising Antibiotic Treatment, Internal Teat Sealant, and α-Tocopherol Against New Intramammary Infections in Cows

Cengiz

Baştan

2015

Bulletin of the Veterinary Institute in Pulawy

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“…It is presumable that peak milk concentration in tylosin treated animals was higher than previously reported, therefore achieving bactericidal activity, which was observed for macrolides when used in high concentrations (14). In conclusion, DCT remains a cost-effective measure compared with no treatment at dryoff (3,16,17). The use of systemic tylosin in combination with the intramammary cephapirin increased the effectiveness of intramammary DCT against Gram-positive IMI.…”

Section: Resultsmentioning

confidence: 83%

Comparison of systemic and intramammary dry cow treatments

Guterbock¹,

Sears

2013

Rev MVZ Córdoba

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Objective. To compare four different dry cow treatments (DCT) and establish their effectiveness in reducing intramammary infections (IIM). Materials and methods. DCTs included systemic tylosin (12g) alone or accompanied by cefapirine intramammary infusions and or an internal teat sealant. A total number of 278 cows at the end of lactation period were randomly assigned to one of 4 dry cow treatment groups: CESE Group (n=89), intramammary cephapirin and teat sealant. TYCESE Group (n=84), intramammary cephapirin, tylosin 12 g intramuscular and teat sealant. TYSE Group (n=86), 12 g intramuscular tylosin and teat sealant; TY Group (n=76) 12 g intramuscular tylosin only. Milk samples for culture were collected at dry-off and 1 and 2 weeks after calving. Somatic cell counts (SCC) were taken from Dairy Herd Improvement Association (DHI) tests at dry-off, and the first two test days after calving. Results. Bacteria cure rate for Gram-positive intramammary infections (IMI) for TYCESE group was 93.6%, CESE group 78.9%, TYSE group 88.2%, and TY group 78.1%. All four groups showed a decrease in the SCC upon the first and second test after calving. Conclusions. The use of systemic tylosin in combination with intramammary antibiotics increased DCT effectiveness improving the Gram-positive cure rate IMI. Furthermore, systemic tylosin alone plus teat sealant is as effective as cephapirin plus teat sealant when used as DCT.Key words: Dry period, mastitis, tylosin (Source: CAB). RESUMENObjetivo. Comparar 4 tratamientos para el periodo seco (TPS) y establecer su efectividad en reducir infecciones intramamarias (IIM). Materiales y métodos. Los TPS incluían tilosina sistémica (12 g) solamente o acompañada con infusiones intramamarias de cefapirina y/o un sellante interno de pezones. Un total de 278 vacas al final de la lactancia fueron asignadas al azar a 1 de 4 grupos de tratamiento. Grupo CESE (n=89), cefapirina y sellante interno de pezones. Gupo TYCESE (n=84), cephapirina intramamaria, tilosina intramuscular y sellador interno de pezones. Grupo TYSE (n=86), tilosina intramuscular y sellante interno de pezones. Grupo TY (n=76) tilosina intramuscular solamente. . Todos los grupos de tratamiento mostraron una disminución en RCS a la primera y segunda prueba despues del parto en comparación con la de secado. Conclusiones. El uso de tilosina en combinación con cefapirina incremento la efectividad del TPS, mejorando las tasas de cura de IIM por Gram positivos. Además TYSE fue tan efectivo como CESE en la reducción de IIM.Palabras Clave: Mastitis, periodo seco, tilosina (Fuente: CAB).

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“…The costs of involuntary culling differ over time, depending on milk production, parity, lactation stage and reproductive status (20). with the economic profit of dry cow treatment (DCT) (6), and one with the economic profit of vaccination against clinical E. coli mastitis (7) ( MPV was calculated by multiplying the average milk price by the marginal products (increased revenues) of using a specific control procedure.…”

Section: Cullingmentioning

confidence: 99%