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Effect of feeding dietary protected fat (Magnapac®) with or without injection of fat soluble vitamin (AD3E) during late pregnancy on milk production was studied. Sixteen multiparous Egyptian buffalo cows were divided into 4 comparable groups. All groups were fed a control diet covers their energy and vitamins requirements. The 1st group received no further supplement and served as control (G1), while the 2 nd group was supplemented with 300g/head/day Magnapac® (protected fat as Ca soap of palm oil)/head/d (G2),the 3 rd one was weekly injected i.m with vitamin AD3E mixture (G3) and the 4 th group was subjected to both Magnapac® and vitamin AD3E treatments (G4). All groups were offered the control diet, restrictedly, which covers their energy and vitamins requirements in addition to the above supplementations. Supplementation was started 45 days before the expected calving date and lasted until a decrease in peak milk production by 10%. Animals were hand milked twice a day and milk production was recorded daily for the 1st 100 days in lactation. Milk samples were collected weekly for chemical analysis. Results showed that intake of metabolizable energy was higher in G2 and G4 compared to G1 by ~10 and 15%, respectively. Daily milk yield was increased (P<0.05) in response to different treatments compared to G1 by ~20%. Moreover, 4 % fat corrected milk yield was higher (P<0.05) for G2 and G4 than G1 by 14.65, 15.95 vs. 12.25 kg/d, respectively, while G3 did not differ from G1. Milk protein and lactose percentage did not differ significantly among all studied groups. Conversely milk fat % showed a significant increase in G4 compared to G3 being 6.78, 5.78%, respectively, but with no difference with the other groups. Energy conversion was better (P<0.05) being 3.43, 3.17 and 3.41 Mcal ME/kg milk for G2, G3 and G4, respectively, than 3.68 Mcal ME/kg milk for G1. In conclusion, supplementing periparturient lactating buffalo with protected fat (300 g/day) and/or injecting vitamin AD3E mixture increase milk production efficiency and enhance the feed efficiency throughout the first 100 day in lactation.

ENHANCING MILK PRODUCTION IN PERIPARTURIENT BUFFALO FED PROTECTED FAT WITH AND WITHOUT VITAMIN AD3E TREATMENT