In these writ petitions, the petitioners have challenged the Government Orders passed in G.O.Ms.No.72 Animal Husbandry and Fisheries Department, dated 31.3.1997 and G.O.Ms.No.257 Animal Husbandry and Fisheries Department dated 1.11.1994. The petitioners and the respective respondents are working as Assistant Professors as they have been recruited directly by the 2nd respondent-university. The petitioner in W.P.No.7720/1997 was appointed in and by the proceedings dated 12.1.1993 and he joined duty as Assistant Professor on 5.2.1993. The petitioners in W.P.Nos.6792 and 6793 of 1997 were also appointed by direct recruitment as Assistant Professors and pursuant to the said appointment, they have joined the 2nd respondent-university and have been working as Assistant Professors. In these Writ Petitions, the respective respondents were also recruited directly after conducting interview and appointment orders were issued to them on the basis of the said direct recruitment either along with the petitioners or subsequent to the petitioners as the case may be. This fact is not disputed before me. By issuing the impugned Government Orders dated 1.11.1994 and 31.3.1997, the Governm