Cost of Milk Production in relation to herd strength

The yearwise data of total herd strength (HS), number of milch animals (MA), number of dry animals (DA), young stock (YS), cost of feed per animal (CF/A), cost of labour or labour charges per animal (LBCH/A), cost of medicine per animal (Med./A) and cost of miscellaneous items per animal (Misc./A) categorized into two groups : Group A and Group B. The observations with herd strength above 200 and below 200 were placed in Group A and Group B, respectively. The years categorized under Group A were 1989-90 to 1994-95 and 1997-98 while those under group B were 1995-96, 1996-97 and 1998-99. Lactation Efficiency (LE) has parallel relationship with number of milch animals on the farm. Total herd strength had highly significant (P