Izvorni znanstveni članak
https://doi.org/10.5513/JCEA01/21.2.2662
Udder shape and milk yield of different sheep breeds
Zvonimir PRPIĆ
; University of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb
Ivan VNUČEC
; University of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb
Miroslav BENIĆ
; Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
Miljenko KONJAČIĆ
; University of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb
Nikolina KELAVA UGARKOVIĆ
; University of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb
Boro MIOČ
; University of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb
Sažetak
The aim of this study was to determine the prevalence of individual udder shapes in three dairy sheep breeds, as well as the relationship of udder shape with the production and chemical composition of sheep's milk. For this purpose, the research included 111 Pag sheep, 93 Istrian sheep and 80 East Friesian sheep. During the milking period in all flocks
included in the research, milking control was carried out using the AT method, while the udder shape assessment in all studied ewes was carried out by the same person once during lactation when conducting the first milking control (after weaning of lamb(s)). In Pag sheep four distinct forms or types of udder (types I, II, III and IV) were clearly identified, in Istrian sheep the existence of three udder shapes (types II, III and IV) was determined, while in East Friesian sheep were
found two udder shapes (type II and III). In all three breeds the most frequent were ewes with the udder type III. in all three breeds, higher production of milk was observed in sheep with low and (almost) vertically positioned teats and with a pronounced longitudinal furrow between the udder halves (udder types III and IV) than in sheep with highly placed and horizontally positioned teats (udder types I and II). However, differences in milk production between sheep of different
udder shapes were found to be statistically significant (P<0.05) only in East Friesian sheep. Irrespective to breed, the poorest average milk chemical composition was found in ewes (udder types) with the highest average daily and lactation milk yield.
Ključne riječi
milk chemical composition; lactation; udder shape; parity; sheep milk
Hrčak ID:
239306
URI
Datum izdavanja:
18.6.2020.
Posjeta: 1.261 *