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Differences in the frequency of mastitis caused by different bacteria in the daughters of specified sires

, : Differences in the frequency of mastitis caused by different bacteria in the daughters of specified sires. Prace i Materialy Zootechniczne (14): 131-140

Using results of routine veterinary examinations, an analysis was made of causes of udder inflammation in 4909 cows after 64 sires. The most frequent cause of mastitis was constituted by streptococci (93.8%), more rarely by staphylococci (4.3%) and other bacteria (1.9%). Differences were noted between frequency of mastitis occurrence in daughters after different sires, which seems to confirm the genetic influence on susceptibility to the illness.

Accession: 005151285

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Related references

Skolasinski, W.; Tyszka, Z.J.; Charon, K.M., 1977: Differences in incidence of mastitis caused by different bacteria among daughters of particular bulls. Examination of quarter milk samples from 4902 daughters and 64 bulls revealed that 93.8% of cases of mastitis were due to streptococci, 4.3% to staphylococci and 1.9% to other bacteria. Daughters of most bulls had 20-30% of quarters infected, but...

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Bolgov, A.E.; Karmanova, E.P.; Onishchenko, N.A., 1987: A study on the stability of estimates of kholmogor sires by their daughters' resistance to mastitis. The influence of sires' genotype on the daughters' resistance to mastitis was investigated. Stability of estimates of this character in reference to the age of progeny was determined. The results obtained from regular examinations in the...

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Hillers, J.K.; Freeman, A.E., 1965: Differences between sires in the rate of maturity of their daughters. The within-sire regression of actual production on age at calving in 1st lactation measured rate of maturity. Only cows calving between 23 and 35 months of age and sires with more than 44 daughters were used. Regressions of production on age diffe...

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