AMINO-ACID PROPORTIONS IN SOME MUSCLES OF CHAROLLAIS AND STAVROPOL-MERINO LAMBS

The objective of the study was to determine proportions of the particu lar amino acids in some muscles (musculus semitendinosus, musculus lon gissimus lumborum et thoracis, musculus triceps brachii) from the lamb skeletal muscles. Skeletal muscles from cuts of leg, loin and rack of ram lambs of Charollais breed (CH) and Stavropol Merino breed (SM) we re used for analyses. Particular amino acids (AA) were determined on a n AAA 339 apparatus pursuant to the standard CSN 46 7092. The results indicate that Charollais lambs have better contents of essential amino acids in the muscles m. semitendinosus and m. triceps the difference between CH and SM was highly significant (P less than or equal to 0.01 ). As for the particular essential AA, only lysine and arginine conten ts were significantly higher in all examined cuts in CH breed (P less than or equal to 0.01). Merino lambs had higher methionine contents in all examined cuts; this difference was highly significant in m. longi ssimus lumborum ft thoracis in comparison with CH breed (P less than o r equal to 0.01).