Izvorni znanstveni članak
The influence of breed and lactation number on goats lactation curve parameters
Neven Antunac
orcid.org/0000-0003-1084-5966
; Zavod za mljekarstvo, Agronomski fakultet, Svetošimunska 25, 10000 Zagreb
Miroslav Kapš
Sažetak
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's correction was done using Wood's 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's 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's peak increased significantly with increased number of lactation up to the fourth kidding.
Ključne riječi
peak yield; time of peak yield; persistency; goats milk
Hrčak ID:
95049
URI
Datum izdavanja:
4.9.1995.
Posjeta: 1.522 *