Istraživanje utjecaja pasmine i redoslijeda laktacije na pojavu vrha proizvodnje mlijeka, na vrijeme pojave vrha proizvodnje mlijeka i na perzistenciju, provedeno je s istim alpina i sanskim kozama tijekom prvih pet laktacija. Mliječnost je kontrolirana jednom na mjesec. Rezultati mjesečnih kontrola mliječnosti korigirani su na 50., 100., 150. i 200. dan laktacije, pri čemu se koristila nelinearna funkcija. Korekcija količine mlijeka provedena je jednadžbom Wood-a (1967). Vrijednosti vrha proizvodnje, vrijeme pojave vrha i perzistencije određivani su primjenom izračunatih vrijednosti parametara toka laktacije a, b i c, prema jednadžbi Wooda. Izračunate vrijednosti za svaku pojedinu pasminu i laktaciju statistički su analizirane linearnim modelom (Harvey, 1975). Među pasminama nisu ustanovljene značajne razlike u vrhu proizvodnje mlijeka i perzistenciji, dok su značajne razlike u vremenu pojave vrha ustanovljene samo u I. laktaciji. Redoslijed laktacije značajno je utjecao na vrijeme pojave vrha i na perzistenciju. Vrh proizvodnje mlijeka značajno se povećao s porastom redoslijeda laktacije sve do IV. jarenja.Research relative to the influence of breed and number of lactation, on milk yields peak, time of reaching peak yield and persistency, was carried out using the same Alpina and Saanen goats through the first five lactations. Milk production was controlled once a month. The results were corrected on the 50th, 100th, 150th and 200th day of lactation using a non-linear function. Milk yield\u27s correction was done using Wood\u27s equation (1967). Milk peak yield values, time of reaching milk peak yield and persistency were determined using calculated lactation parameter values a, b and c according to the Wood equation. Each breed\u27s calculated value and lactation was statistically analyzed using linear model (Harvey, 1975). Differences between milk yield peak and persistency as well as between breeds were not significant. Significant were differences within time of reaching milk yield peak during the first lactation. Lactation number influenced significantly time of reaching milk peak and persistency. Milk yield\u27s peak increased significantly with increased number of lactation up to the fourth kidding
