DefinePK

Abstract

ABSTRACT


Twenty lactating buffaloes divided into 4 groups five
each were used to evaluate the singular and combined effect of bovine
somatotropin and monensin on the productive performance of Egyptian dairy
buffaloes. Treatments were 1 control, 2 injection of exogenous bovine
somatotropin bST, 3 concentrate feed mixture top dressed with 400
mg of monensin Mdanimal, 4 somatotropin bST and monensin in combination,
during 14 day before expected calving and the first 120 day of lactation
period. Diets and managements were the same for all animals during the
experimental period. Dry matter intake was increased for animals which
treated with rbST. Digestibility co-efficient of DM, OM, CF, EE and NFE
were not affected by treatments, however, digestibility of CP was significantly
higher in animals treated with rbST. Milk yield and 4 fat corrected milk
yield were significantly p0.01 higher in animals treated with rbST
group than other groups. Milk fat, Total Solids TS, Total Protein TP
and ash contents were not significantly p0.05 changed by treatments,
however, milk lactose content was significantly p0.01 increased
by treatments. Plasma total protein and glucose concentrations were significantly
p0.01 increased by rbST treatment, however, plasma albumin, globulin,
AG ratio, urea, GOT, GPT and cholesterol contents were not significantly
affected by treatments. The results of the present study suggest that
rbST is efficacious in increasing milk yield without effect on milk composition
and without any adverse effects on lactating buffaloes.


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