GENETIC POLYMORPHISM OF -LACTOGLOPULIN (-Lg) IN TWO RUSSIAN SHEEP BREEDS

Document Type : Original Article

Author

Present address: Anim. Prod. Dept., Cool. Agric., Basrah Univ., Basrah, IRAQ.

Abstract

SUMMARY
Milk samples from 120 Russian Merino (Precos) and 30 Romanov sheep were
analyzed by polyacrilamide gel electrophoresis under acid conditions to study the
Genetic polymorphism of -lactoglobulin (-Lg) in two Russian sheep breeds. Five
different -Lg phenotypes (A, B, AB, AC and BC) were observed in Precos breed
milk, but only three phenotypes were found in Romanov breed milk (A, B and AB).
Differences in gene frequencies between flocks were observed. The gene frequencies
of -Lg were: A: 0.617, B: 0.36, C: 0.016 in Precos breed milk and A: 0.600, B:
0.400 in Romanov breed milk.