Naslov
Productivity of milk and milk composition of Istrian sheep in Croatia and Slovenia

Autori
Kastelic Miran ; Špehar Marija ; Barać Zdravko

Izvornik
Slovenian veterinary research (1580-4003) 50 (2013), 4; 149-156

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Istrian sheep; dairy production; Croatia; Slovenia; environmental effects

Sažetak
He effects of country, flock nested within country, litter size, parity, lambing season, interval between lambing and the first milk recording, and year of lambing on production of Istrian sheep in Slovenia and Croatia was studied in period between 2005 and 2009. Data consisted of 3, 347 lactations in Croatia and 1, 788 in Slovenia that were collected as a part of separate breeding programs. The Croatian animals produced 124.87 kg total milked milk (TMM) with 7.31 % of fat (FC) and 6.05 % of protein content (PC). Slovenian ewes produced only 79.33 kg TMM with 7.25 % FC and 5.87 % PC. The increase of TMM was 5.40 kg per year (P<0.05). Ewes that lambed between October and the end of January had the highest TMM, fat yield (FY), and protein yield (PY). The productivity did not differ between countries. Flock effect nested within country caused differences (P<0.05) in TMM, FC, and PC. The effect considered genetic, management and climatic conditions (average temperature, above mean sea level (AMSL), and precipitation). Productivity was not affected by the litter size. Higher productivity was observed in ewes reared in the Mediterranean area. The exception was one flock coming from harsher continental conditions. The productivity in such conditions can be improved with earlier lambing, high quality forage before the grazing season and with an extra feeding on pasture after the dry weather begins.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA