Influence of breeding and feeding factors upon the blood proteic picture of goats

Abstract

In the following research the authors endeavors to establish the normal blood protein picture in goats (Capra hircus), raised in the State of São Paulo (Brazil). The authors studied 150 healthy female goats, raised in several areas of the State of São Paulo (Brazil), their breedings were Anglo Nubian (60), Toggenbourg (60) and Angora (30). For verifying the eventual influence of feeding on the blood proteic picture, the Anglo Nubian and the Toggenbourg goats, were separated in 4 groups of 30 animals, each group; 2 groups of each breeding were submitted to different feedings, one group of each breeding, grazed in pangola grass (Digitaria decumbens) pasture and the other received besides the forrage a supplementary concentrated feed. In order to verify whether the breed factor have some influences upon the proteic contents in the results obtained in the serum of the Anglo Nubian, Toggenbourg and Angora animals submitted to a standard feed and raised under the same conditions. The author used the Gornall and cols. (1949) method to determine the total protein, albumin, globulin and ratio of albumin/globulin in the serum. The original method was modified by precipitating the globulins in a 27 g% sodiumsulfite solutions, as recommended by Birgel (1967). The determination of fibrinogen in the plasma was reached by means the Cullen an Van Slyke modified method as recommended Quick (1959).