Genetic polymorphism of milk protein and its effect on milk composition traits in Muzaffarnagari sheep.

The article presents a study which examined the genetic polymorphism of milk protein and its effect on milk composition traits in Muzzaffarnagari sheep in India. Individual milk samples from 86 lactating Muzaffarnagari ewes maintained at the Central Institute for Research on Goats, Makhdoom, Mathura, India were obtained and stored at -20°Centigrade for further use. To identify the effect of milk protein variants on total protein and total casein content of milk, the data were analyzed using the mixed model least-squares analysis for fitting constants. The study revealed that a casein variant had only significant effect on casein content of milk and none of these milk protein variants had significant effect on total protein content of milk in this breed.