If you are working in SQL view, you could conceivably add the new field there:
Change this:
Awards], herddata_6.[Registered No], herddata_6.[Stud], herddata_6.[Name], herddata_6.[Classification (senior)], herddata_6.[Milk Award], herddata_6.[Show Awards]
FROM (((((herddata LEFT JOIN herddata AS herddata_1 ON herddata.[Sire's No] = herddata_1.[Registered No]) LEFT JOIN
to:
Awards], herddata_6.[Registered No], herddata_6.[Stud], herddata_6.[Name], herddata_6.[Classification (senior)], herddata_6.[Milk Award], herddata_6.[Show Awards], herddata.Microchip
FROM (((((herddata LEFT JOIN herddata AS herddata_1 ON herddata.[Sire's No] = herddata_1.[Registered No]) LEFT JOIN
Note my spelling of Microchip, and my guess that you have this field in the herddata table. Adjust as needed.