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An Epidemiological and Genetic Study on Registered Diseases in Finnish Ayrshire Cattle
En epidemiologisk och genetisk undersökning au sjukdomsdata från finsk Ayrshire boskap. IV. Klinisk mastit
IV. Clinical Mastitis
Acta Veterinaria Scandinavica volume 27, pages 223–234 (1986)
Abstract
The epidemiology and genetic variability of clinical mastitis were examined. The data consisted of 70,775 Finnish Ayrshire cows. All cows were from milk recorded herds and calved during 1983. Each cow was under observation from the date of calving for 305 days. Only clinical mastitis diagnosed and treated by a veterinarian during the farm visits were taken into account. The lactation incidence rate of clinical mastitis (LIR) was 5.4 %. The cows calving in April-May had the highest LIR, but the seasonal variation was relatively small. The LIR increased with parity from the first to sixth parity. The cows treated for parturient paresis, infertility or ketosis had a higher risk of clinical mastitis than cows not treated for these diseases. The LIR was higher in herds with a high milk production level. The highest odds ratio estimated from parameters of the logit model was 14.8. The heritability estimates for clinical mastitis on the binomial scale were 3.2 % in parity 1, 1.6 % in parity 2, 0.6 % in parity 3 and 4, and 0.8 % in all parities (corresponding to 19.7 %, 8.3 %, 2.6 % and 3.8 % on the normal scale). These estimates indicate sufficient assurance for progeny testing of bulls and some possibilities of genetic selection against clinical mastitis. Genetic correlations between clinical mastitis and 305-days milk yield were 0.39 in parity 1, 0.51 in parity 2, 0.18 in parity 3–4 and 0.58 in all parities. This means that the best sires for milk yield had daughters with a higher LIR for clinical mastitis than the other sires.
Sammanfattning
Epidemiologin och den genetiska variationen av klinisk mastit undersöktes. Det använda datasetet omfattade 70775 finska Ayrshire kor. Alla kor var från kontrollföreningsanslutna besättningar och hade kalvat under år 1983. Varje ko observerades från kalvningen till den 305 dagen efter denna. Bara kliniska niastiter, diagnostiserade och behandlade av en veterinär i samband med sjukbesök, inkluderades i materialet. Lactation incidence rate (LIR) för klinisk mastit var 5.4 %. Kor, som kalvade under april-maj hade den högsta LIR, men säsongvariationen var relativt liten. LIR ökade från den första laktationen till den sjätte. Kor som behandlades för kalvningsförlamning, infertilitet eller ketos hade en högre risk för klinisk mastit än obehandlade kor. LIR var högre i högproducerande besättningar. Den högsta odds ratio enligt logit model var 14,8, Ärftligheten för klinisk mastit i binomiala skalan var 3,2% (1. aktationen), 1,6 % (2.), 0,6 % (3.–4.) och 0,8 % för hela materialet (motsvarande 19,7 %, 8,3 %, 2,6 % och 3,8 % i den normala skalan). Resultaten är tillräckligt noggranna för avkommebedömning av tjurar och ger några möjligheter för genetisk selektion mot klinisk mastit. Genetisk korrelation mellan klinisk mastit och 305-dagars mjölkproduktion var 0,39 (1. laktationen), 0,51 (2.) och 0.18 (3.–4.). Det betyder, att tjurar som har mest producerande döttrar också har döttror med högsta LIR av klinisk mastit.
References
Bakken, G. & R. Gudding: The inter dependen-ce between clinical and subclinical mastitis. Acta agrie, scand. 1982, 32, 17–22.
Banks, D. B., I. L. Mao & J. P. Walter: Robustnes of restricted maximum likelihood estimator derived under normality as applied to data with skewed distributions. J. Dairy Sci. 1985, 68, 1785–1792.
Bäckström, L., J. Mattsson, O. Wallin & B. Vilson: Praktikjournalförsöket i Skaraborgs län 1971-1973. (Practice journal experiment in the county of Skaraborg 1971-1973). Svemsk. Vet.-Tidn. 1975, 27, 238–250, 292-300.
Curtis, C. R., H. N. Erb, C. J. Sniffen, R. D. Smith & D. S. Kronefeld: Path analysis of dry period nutrition, postpartum metabolic and reproductive disorders, and mastitis in Holstein cows. J. Dairy Sci. 1985, 68, 2347–2360.
Cox, D. R.: Analysis of Binary Data. Chapman and Hall, London 1970.
Danell, Ö.: Theoretical aspects in the estimation of breeding values for all-or-none traits. 36th Ann. Meet. Europ. Assoc. Animal Product., Kallithea, Greece 1985.
Dempster, E. R. & I. M. Lerner: Heritability of threshold characters. Genetics 1950, 35, 212–236.
Dodd, F. H.: Progress in mastitis control. Kieler Milchw. Forschnungsb. 1985, 37, 216–223.
Dohoo, I. R. & S. W. Martin: Disease, production and culling in Holstein-Friesian cows. III. Disease and production as determinants of disease. Prev. Vet. Med. 1984, 2, 671–690.
Dohoo, I. R., S. W. Martin, I. McMillan & B. W. Kennedy: Disease, production and culling in Holstein-Friesian cows. II. Age, season and sire effects. Prev. Vet. Med. 1984, 2, 655–670.
Elleby, F., P. Jochumsen & H. N. Veirup: Forekomst af kvægsygdomme i 6 danske kontrolforeningar i 1967/1968. (Disease incidence within six Danish milk recording societies). Kgl. Vet.- og Land-bohøjsk. Inst. Sterilitetsforskn. Aarsberetn. 1969, p. 77–90.
Erb, H. N. & S. W. Martin: Age, breed and seasonal patterns in the occurrence of ten dairy cow diseases: a case control study. Canad. J. comp. Med. 1978, 42, 1–9.
Erb, H. N. & S. W. Martin: Relationship between production and reproductive diseases in Holstein cows. Data. J. Dairy Sci. 1980, 63, 1911–1917.
Feinberg, S. E.: The Analysis of Gross-classified Categorical Data. 2nd ed. MIT Press, Cambridge, Massachusets 1980.
Gianola, D.: A method of sire evaluation for dichotomies, J. Anim, Sci. 1980a, 51, 1266–1271.
Gianola, D.: Genetic evaluation of animals for traits with categorical responses. J. Anim. Sci. 1980b, 51, 1272–1276.
Gianola, D.: Theory and analysis of threshold characters. J. Anim. Sci. 1982, 54, 1079–1095.
Grohn, Y., H. Saloniemi & J. Syväjärvi: An epidemiological and genetic study on registered diseases in Finnish Ayrshire cattle. I. The data, disease occurrence and culling. Acta vet. scand. 1986, 27, 182–195.
Harville, D. A. & R. W. Mee: A mixed model procedure for analysing ordered categorical data. Biometrics 1984, 40, 393–408.
International Dairy Federation (IDF): International progress in mastitis control. Bulletin No. 187, 1985.
Lindström, U. B. & J. Syväjärvi: Use of field recording in breeding for mastitis resistance in dairy cattle. Livest. Prod. Sci. 1978, 5, 29–44.
Meijering, A.: Practical aspects in the estimation of parameters and breeding values for all-or-none traits. 36th Ann. Meet. Europ. Assoc. Animal Product., Kallithea, Greece 1985.
Miller, R. H., J. R. Owen & E. D. More: Heritability of measures of incidence of clinical mastitis in Jersey cattle. J. Dairy Sci. 1975, 58, 751.
Miller, R. H.: Traits for sire selection related to udder health and management. J. Dairy Sci. 1984, 67, 459–471.
Mäntysaari, E., J. Syväjärvi & T. Heitman: A multiple trait selection index for progeny tested dairy bulls in Finland. Progeny testing methods in dairy cattle. IDF/EAAP symposium. Prague, September 1984. Bulletin Document 183, 204–212.
Norman, H. D. & L. D. VanVleck: Type appraisal: II. Variation in type traits due to sires, herds, and years. J. Dairy Sci. 1972, 55, 1717–1725.
O'Blennes, G. V., L. D. Van Vleck & C. R. Henderson: Heritability of some appraisal traits and their genetic and phenotypic correlation with production. J. Dairy Sci. 1960, 43, 1490–1498.
Olausson, A. & K. Rönningen: Estimation of genetic parameters for threshold characters. Acta agrie, scand. 1975, 25, 201–208.
Philipsson, J., B. Thafvelin & J. Hedebro-Velander: Genetic studies on disease recordings in first lactation cows of Swedish dairy breeds. Acta agrie, scand. 1980, 30, 325–335.
Ray, A. A.: SAS User's Guide: Statistics. SAS Institute Inc., Carry, NC 1982.
Saloniemi, H.: Udder diseases in dairy cows — field observations on incidence, somatic cell and environmental factors and control. J. scient, agrie. Soc. Fini. 1980, 52, 85–184.
Saloniemi, H. & K. Roine: Field observations on the incidence of bovine clinical mastitis and teat diseases. Nord. Vet.-Med, 1981, 33, 297–305.
Shook, G. E., F. Ruvna & A. K. A. Ali: Genetic parameters for lactation average of somatic cell concentration in milk. 2nd World Congress on Genetics Applied to Livestock Production. Madrid 1982, 8, 142–147.
Solbu, H.: Disease recording in Norwegian dairy cattle. I. Disease incidence and non-genetic effects on mastitis, ketosis, and milk fever. Z. Tierz. Zuchtungsbiol. 1983, 100, 139–157.
Solbu, H.: Disease recording in Norwegian dairy cattle. II. Heritability estimates and progeny testing for mastitis, ketosis and “all diseases”. Z. Tierz. Zuchtungsbiol. 1984, 101, 51–58.
Van Vleck, L. D.: Estimation of heritability of threshold characters. J. Dairy Sci. 1972, 55, 218–225.
White, F. & E. A. S. Rattray: The in vitro effect of ketone bodies on the growth curves of mastitis organisms in milk. J. comp. Path. 1968, 78, 179–188.
Acknowledgments
The authors thank Pol. Lie. Juni Palmgren for advice on logistic regression, and the Agricultural Data Processing Centre for supplying computer facilities for statistical analysis.
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Syväjärvi, J., Saloniemi, H. & Grohn, Y. An Epidemiological and Genetic Study on Registered Diseases in Finnish Ayrshire Cattle. Acta Vet Scand 27, 223–234 (1986). https://doi.org/10.1186/BF03548166
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DOI: https://doi.org/10.1186/BF03548166