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Vaccination against Staphylococcus aureus mastitis in two Swedish dairy herds.

Landin H, Mörk MJ, Larsson M, Waller KP - Acta Vet. Scand. (2015)

Bottom Line: In herds where normal control measures are not successful, vaccination might be an additional tool to use if sufficiently efficient.Significant differences between vaccinated and control groups were not found in any of the parameters investigated.Vaccination with a commercial polyvalent vaccine did not have any beneficial effects on udder health, milk production or survival in two commercial dairy herds with mastitis problems due to S. aureus.

View Article: PubMed Central - PubMed

Affiliation: Växa Sverige, SE-104 25, Stockholm, Sweden. hakan.landin@vxa.se.

ABSTRACT

Background: Staphylococcus aureus is a common udder pathogen in dairy cows, and may cause severe mastitis problems in some herds. In herds where normal control measures are not successful, vaccination might be an additional tool to use if sufficiently efficient. The aim of the present study was to evaluate the efficacy of a commercially available vaccine (Startvac(®), Hipra, Spain) in two commercial Swedish dairy herds where the control programs for S. aureus mastitis had been unsuccessful. Within each herd cows were randomly assigned to vaccine or control groups, and effects on udder health and milk production during 120 days after calving, and survival during the following lactation were evaluated.

Results: A field study was performed in two high producing Swedish herds having approximately 600 (herd A) and 200 (herd B) cows. During 12 months, cows with odd numbers were vaccinated three times around calving according to label protocol, while cows with even numbers constituted the not vaccinated control group. Quarter milk samples for bacteriological culturing were collected from all cases of clinical and subclinical mastitis. The outcome was evaluated during 120 days after calving using data on SCC and daily milk yield at monthly milk recordings, and incidence of mastitis due to S. aureus, coagulase-negative staphylococci, streptococci and coliforms. Cow survival throughout lactation was also studied. In herd A, 239 and 240 cows were included in the vaccinated and control groups, respectively. Corresponding numbers for herd B was 126 and 151 cows. Significant differences between vaccinated and control groups were not found in any of the parameters investigated.

Conclusions: Vaccination with a commercial polyvalent vaccine did not have any beneficial effects on udder health, milk production or survival in two commercial dairy herds with mastitis problems due to S. aureus.

No MeSH data available.


Related in: MedlinePlus

Milk production in vaccinated and not vaccinated cows. Milk production (kg milk/day; arithmetic average) at the first 4 monthly milk recordings after calving in vaccinated (vacc) and not vaccinated control (con) cows in herd A and B
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Fig2: Milk production in vaccinated and not vaccinated cows. Milk production (kg milk/day; arithmetic average) at the first 4 monthly milk recordings after calving in vaccinated (vacc) and not vaccinated control (con) cows in herd A and B

Mentions: The SCC (geometric average) and milk production (arithmetic average) at the first four milk recordings after calving per herd and treatment are presented in Figs. 1 and 2, respectively. There were no significant differences between vaccinated and unvaccinated cows for SCC or milk production. The predicted SCC was 67,200 cells/ml (95 % CI 56,300–80,200) in the vaccinated group and 65,700 cells/ml (95 % CI 55,200–78,200) in the control group (p = 0.77). The predicted milk production was 39.8 kg (95 % CI 38.9–40.7) in the vaccinated group and 39.6 kg (95 % CI 38.7–40.5) in the control group (p = 0.69).Fig. 1


Vaccination against Staphylococcus aureus mastitis in two Swedish dairy herds.

Landin H, Mörk MJ, Larsson M, Waller KP - Acta Vet. Scand. (2015)

Milk production in vaccinated and not vaccinated cows. Milk production (kg milk/day; arithmetic average) at the first 4 monthly milk recordings after calving in vaccinated (vacc) and not vaccinated control (con) cows in herd A and B
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4660610&req=5

Fig2: Milk production in vaccinated and not vaccinated cows. Milk production (kg milk/day; arithmetic average) at the first 4 monthly milk recordings after calving in vaccinated (vacc) and not vaccinated control (con) cows in herd A and B
Mentions: The SCC (geometric average) and milk production (arithmetic average) at the first four milk recordings after calving per herd and treatment are presented in Figs. 1 and 2, respectively. There were no significant differences between vaccinated and unvaccinated cows for SCC or milk production. The predicted SCC was 67,200 cells/ml (95 % CI 56,300–80,200) in the vaccinated group and 65,700 cells/ml (95 % CI 55,200–78,200) in the control group (p = 0.77). The predicted milk production was 39.8 kg (95 % CI 38.9–40.7) in the vaccinated group and 39.6 kg (95 % CI 38.7–40.5) in the control group (p = 0.69).Fig. 1

Bottom Line: In herds where normal control measures are not successful, vaccination might be an additional tool to use if sufficiently efficient.Significant differences between vaccinated and control groups were not found in any of the parameters investigated.Vaccination with a commercial polyvalent vaccine did not have any beneficial effects on udder health, milk production or survival in two commercial dairy herds with mastitis problems due to S. aureus.

View Article: PubMed Central - PubMed

Affiliation: Växa Sverige, SE-104 25, Stockholm, Sweden. hakan.landin@vxa.se.

ABSTRACT

Background: Staphylococcus aureus is a common udder pathogen in dairy cows, and may cause severe mastitis problems in some herds. In herds where normal control measures are not successful, vaccination might be an additional tool to use if sufficiently efficient. The aim of the present study was to evaluate the efficacy of a commercially available vaccine (Startvac(®), Hipra, Spain) in two commercial Swedish dairy herds where the control programs for S. aureus mastitis had been unsuccessful. Within each herd cows were randomly assigned to vaccine or control groups, and effects on udder health and milk production during 120 days after calving, and survival during the following lactation were evaluated.

Results: A field study was performed in two high producing Swedish herds having approximately 600 (herd A) and 200 (herd B) cows. During 12 months, cows with odd numbers were vaccinated three times around calving according to label protocol, while cows with even numbers constituted the not vaccinated control group. Quarter milk samples for bacteriological culturing were collected from all cases of clinical and subclinical mastitis. The outcome was evaluated during 120 days after calving using data on SCC and daily milk yield at monthly milk recordings, and incidence of mastitis due to S. aureus, coagulase-negative staphylococci, streptococci and coliforms. Cow survival throughout lactation was also studied. In herd A, 239 and 240 cows were included in the vaccinated and control groups, respectively. Corresponding numbers for herd B was 126 and 151 cows. Significant differences between vaccinated and control groups were not found in any of the parameters investigated.

Conclusions: Vaccination with a commercial polyvalent vaccine did not have any beneficial effects on udder health, milk production or survival in two commercial dairy herds with mastitis problems due to S. aureus.

No MeSH data available.


Related in: MedlinePlus