الفهرس 
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Abstract
preceding lactation and animal weight. The treatments were (1) control (2)
control + 10g Yea Sacc1026 (3) control+ 10 g Lacto Sacc (4) control+ 10 g Baker’s Yeast. The daily
control ration consisted of concentrate feed mixture (CFM): berseem and rice straw (55: 45, dry
matter basis).
The treatments extented to 25 weeks after parturition. Yea Sacc1026
supplementation significantly (P<0.05) increased nutrients digestibilities, milk yield,
fat-corrected milk yield, milk protein content, C16 content in milk fat; histidine, phenylalanine,
serine, glycine, proline, tyrosine and total non essential amino acids in milk; total protein,
albumin, urea nitrogen, glucose and cholesterol in blood serum than control. Lacto Sacc
supplementation significantly (P<0.05) increased nutrients digestibilities, C18 in milk fat,
histidine, glycine and proline in milk, albumin and glucose in blood serum, however it decreased
(P<0.05) alkaline phosphatase than control. Baker’s Yeast supplementation significantly (P<0.05)
increased nutrient digestibilities;
C14 and C16 in milk fat and glucose in blood serum, however it decreased
1026
(P<0.05) C18 content in milk fat. It could be concluded that Yea Sacc supplementation to
the ration had a great beneficial effects on the productive performance and the economical
efficiency of lactating buffaloes under the
field condition in Egypt..