Chemical and physical composition of milk from Northestern Bulgarian finewool sheep breed and its crosses
2006
Slavov, R. (Trakijski Universitet, Stara Zagora (Bulgaria)) | Mikhajlova, G. (Trakijski Universitet, Stara Zagora (Bulgaria))
The study was performed on bulked milk samples obtained from ewes from the breeding stock of the Dobrudja Institute of Agriculture that comprised 120 sheep at their first lactation, divided into 6 groups in which lambing occurred between December 15 and December 30 were used. The sheep breeds by groups were as followed: group I - Northestern Bulgarian finewool breed (NEBF), group II -NEBF crosses with S blood of Australian Merino breed ; group III - NEBF crosses with j blood of Australian Merino (AM); group IV - NEBF crosses with S blood of Ill de France (IF) - NEBF x IF; group V - NEBF crosses with j blood of Ill de France breed; groupVI NEBF crosses with 1/4 blood of Booroola breed. It was established that the milk of NEBF crosses with S blood of Ill de France had the highest dry matter content (21.08%), milk fat (8.55%) and total protein (7.18%) and thelowest cholesterol (0.031%). There were not statistically significant differences among gr oups with regard to the content of macro- and trace elements in milk. The lack of considerable differences in studied milk parameters among groups allowed us to assume that the breeding of NEBF with AM, IF or Booroola breeds had no negative impact upon quantitative parameters of milk in their crosses.
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