Abstract
The fraction of oligosaccharides (OS) in goat milk is becoming increasingly important for its bio-functional role. OS profile of goat milk shows more similarity to human milk in comparison to bovine and ovine milk, in addition goat milk contains sialylated OS which play an important role in brain development and increase immunity in infants.In the first study, in order to improve the knowledge on breed effect on sialyloligosaccharides (SOS), we have focused on three of the most representative SOS; 6′ sialyllactose (6′-SL), 3′ sialyllactose (3′-SL) and disialyllactose (DSL) in colostrum and milk from Saanen goats, a cosmopolitan breed, and from Garganica goats, native breed. Successively, we compared the SOS levels in colostrum and milk of Saanen goats in two different parity. The results showed a significant effect of breed on SOS content (P<0.05) and a significant interaction breed×sampling time occurred for 3′-SL (P<0.001) and 6′-SL (P<0.01). Concerning parity, a significant effect was found only for the 3′-SL content (P<0.05). The present finding is particularly relevant in order to preserve and improve native breed production in view of a sustainable land use.
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