Question:  query regarding some local chicken [ laying hen]--generally standard egg weight is 56-57 gm ,weight  & size of hen [ local ]  may very depending upon the type of breed , nutritional status , anatomical architexture of fallopian tube ,environment & genetic , size & weight are varied in different group [ local / indigenous ]breed] , but nearly almost same , the larger size of any local breed can  produce larger size of egg then the another local breed , generally less then 50 gm weigt egg should not be select for incubation either local/ other layer breed  
Answer: generally standard egg weight is 56-57 gm ,weight  & size of hen [ local ]  may very depending upon the type of breed , nutritional status , anatomical architexture of fallopian tube ,environment & genetic , size & weight are varied in different group [ local / indigenous ]breed] , but nearly almost same , the larger size of any local breed can  produce larger size of egg then the another local breed , generally less then 50 gm weigt egg should not be select for incubation either local/ other layer breed