[Effect of recombinant bovine somatotropin on the secretion and composition of milk in Sardinian ewes].
To verify the effect on the milk yield, 5 Sardinian ewes at 45 days from lambing were given two subcutaneous administrations, in a sustained-release vehicle, of recombinant bST in the dose of 3 mg/Kg of live weight, at 28 day intervals. Other 5 ewes of the same age, weight, distance from lambing and milk yield, were kept untreated. The observations lasted 56 days. The individual milk yield was recorded daily while both the milk (dry matter, ash, fat and protein) and some blood parameters (glucose, triglycerides, albumin, total protein, urea nitrogen, phospholipids, total and HDL cholesterol, calcium, phosphorus and magnesium) were checked weekly for each subject, by standard analytical methodology. The rbST significantly influenced the milk yield (+9.75% for the treated group) as already found in cows. The milk composition and the checked blood parameters were unaffected by the treatment.
Floris
B
B
Istituto di Nutrizione ed Endocrinologia, Università di Sassari.
Carcangiu
V
V
Bini
P P
PP
Nuvole
P
P
D000818:Animals; D001786:Blood Glucose / Q000032:analysis; D001798:Blood Proteins / Q000032:analysis; D002417:Cattle / Q000378:metabolism*; D005227:Fatty Acids / Q000032:analysis; D005260:Female; D013006:Growth Hormone / Q000494:pharmacology*; D007558:Italy; D007774:Lactation / Q000187:drug effects*; D008055:Lipids / Q000097:blood; D008892:Milk / Q000032:analysis*; D008894:Milk Proteins / Q000032:analysis; D011994:Recombinant Proteins / Q000494:pharmacology; D012756:Sheep / Q000097:blood / Q000502:physiology*; D013045:Species Specificity
D001786:Blood Glucose; D001798:Blood Proteins; D005227:Fatty Acids; D008055:Lipids; D008894:Milk Proteins; D011994:Recombinant Proteins; D013006:Growth Hormone
Effetto della bST ricombinante sulla secrezione e sulla composizione del latte nella pecora sarda.