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INFLUENCE OF CERTAIN FACTORS ON THE ANNUAL MILK PRODUCTION OF THE CROSSBREEDS BETWEEN AWASSI AND DOMESTIC POPULATION OF SHEEP
Nikola Pacinovski
; University Ss. Cyril and Methodius, Skopje, Republic of Macedonia
Elena Eftimova
; University Ss. Cyril and Methodius, Skopje, Republic of Macedonia
Goce Cilev
; University Ss. Cyril and Methodius, Skopje, Republic of Macedonia
Sažetak
A study on few production traits (total milk production, commercial milk, lactation period), in a total of 89 crossbreeds between Awassi and domestic population of sheep in Macedonia was carried out in a during two year period (2004, 2005). The sheep were in the first and second lactation and a total of 1145 individual lactation tests were carried out on them, during two years. All the data were analyzed by multi trait fixed model. The separate trait influence was studied by the F-test, and the differences between LS –estimates of each effect were determined by the T-test. The analyses were made by the set of programs SPSS. Several factors (year and lactation), had a highly significant influence (P<0,001) on all the traits from the yearly production of milk. Other factors like the month of lambing showed a highly significant influence (P<0,01) on certain traits (lactation, amount of commercial milk and length of lactation), while this factor did not have any influence on the other traits (suckling period). The fertility did not have any influence (P>0,05).
Ključne riječi
Awasi crossbreeds; production traits; factor influence; year; loctation; month of lambing; fertility
Hrčak ID:
57015
URI
Datum izdavanja:
12.7.2010.
Posjeta: 951 *