Effect Of Rumen-protected Methionine On The Production Performance And Blood Parameters Of Tan Sheep

Tan sheep is famous for its er-mao skin and meat.Its flesh is tender and rich in nutritious,and its er-mao skin is light and soft.Based on the above background,the effects of rumen-protected methionine on the growth and wool quality of Tan sheep were investigated.This provides data support for the study of rumen-protected methionine addition and the growth and development of Tan sheep.Select 60 weaned male lambs with similar weight and similar birth date and there are in good health.Randomly divide them into three groups.They were group A(0%rumen-protected methionine),group B(0.5%rumen-protected methionine),group C(1%rumen-protected methionine),20 sheeps per group,fed in a single sheep pen.The targets are:body weight of Tan sheep,amino acid content in wool,physical properties of wool quality(average fiber length,average fiber diametcr,avcragc fiber curvature and average wool bending number),blood biochemical indicators and blood amino acid content.The test results are as follows:At the 30th day of the formal test,the daily gain and body weight in group B and uroup C were siunificantly higher than those in group A(P<0.01).At the 60th day of the formal test,there was no significant difference in daily gain and body weight among the three groups A.B and C(P>0.05).Among the physical properties of wool,compared with group A,the average curvature of group C wool significantly decreased(P<0.05),and the average curvature of group B wool also deereased,and group B and C The bending number of wool increascd.Among the wool amino acids,the contents of glycine,alanine,tyrosine and proline in group B were significantly increased compared with groups A and C(P<0.05).At the 30th day of the formal test,the blood total protein and globulin content in group A was significantly lower than that in group B(P<0.05).The blood urea nitrogen content in group A was significantly higher than that in group B(P<0.05);The blood urea nitrogen content in group C was significantly lower than that in group A and group B(P<0.01).At the 60th day of the formal test,the total protein and globulin content in group B was significantly lower than that in group C(P<0.01),which was significantly higher than that in group A(P<0.05).The blood albumin content in group C was significantly higher than that in group A and B(P<0.05);The blood urea nitrogen content in group B and group C was significantly lower than that in group A(P<0.01).The blood creatinine content in group C was significantly higher than that in group A and group B(P<0.01).The blood glucose content in group C was significantly higher than that in group B(P<0.01).And the amino acids in the blood are in the formal test for 30 days,Compared with group A,hydroxyproline,ethanolamine,asparagine,taurine and ?-alanine in group B were significantly increased(P<0.01),and cysteine was significantly increased(P<0.01),and serotonin significantly decreased(P<0.01).In group C,cysteine,taurine,histidine,aspartic acid,carnosine,1-methylhistidine,asparagine,hydroxyproline and 5-aminovaleric acid were significantly higher than group A(P<0.01),citrulline and(3-alanine were significantly increased(P<0.05),and serotonin was significantly decreased(P<0.01).At the 60th day of the formal test,the levels of glutamine,alanine,proline,lysine and cystathionine in group B were significantly lower than those in group A(P<0.05);compared with group A,group C Glycine,arginine,tryptophan,hydroxyammonium,ethanolamine.camosine,3-aminoisobutyric acid.kynurenine,1-methylhistidinc were significantly increased(P<0.05).aspartame The content of acid and homotypic citrullinc was significantly increased(P<0.01).In ummary,the addition of 0.5%rumen-protected methionine can increase the body weight and daily gain of the beach sheep and improve the quality of the wool;adding 1%rumen-protected methionine can increase the protein and glucose content in the blood of the beach sheep and lower the blood.Urea nitrogen increases the content of taurine,cysteine,histidine,aspartic acid and carnosine in the blood,and the content of serotonin decreases.