The effect of including lupin and triticale in dairy goat diet on performance and fatty acid profile of milk
2016
Otmani, S El | Ayadi, M | Chentouf, M
In Northern Morocco mountainous, goat feeding is based on forest rangelands and characterized by strong seasonal variability responsible of the low productivity of herds. Feed improvement is necessary. Lupin and triticale are both available resources in region. This work aims to study the effect of lupin and trit- icale utilization in dairy goat diet on production performance and fatty acid profile of milk. During 115 days, 21 goats were divided in three lots of 7 each (Control, R2 and R3). The food ration was based on rangeland and ad-libitum oat hay and supplemented by 3 concentrate diets with respectively 0, 25, 50 per cent of lupin and 0, 50, 25 per cent of triticale. Milk production was quantified every two weeks and milk samples were collected month- ly to determine fatty acid profile using gas chromatograph (CG). The monthly daily milk production was not affected by the introduction of lupin and triticale in the diet. The production was statistically the same in every month. Comparing to control group, fatty acids in milk of test groups are not affected by the diet. But in comparing test groups (R2 and R3), C12 fatty acid differs significantly. Groups of desirable fatty acids, unsaturated, monounsaturated and polyunsaturated, omega 3 and 6 are statistically similar in control, R2 and R3 groups. In conclusion, lupin and triticale introduction can reach 50 per cent without adversely affecting production performance and fatty acid profile of goat milk
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