FIRST UNDER TEST: Hugh Cooper, Washtenaw county goat fancier, leads Michigan's first goat to go under test in the national Dairy Herd Improvement Association out for inspection. The animal, a Nubian, is registered and dropped twin kids when she freshened. She produces between four and five quarts of milk daily and shows a butterfat test of approximately 5 per cent. Standing at Mr. Cooper's right is Guerdon Frost, tester in Washtenaw county's D.H.I.A. group, No. 1, in which the animal is entered. The interested young man at the left is one of Mr. Cooper's two sons, who drink goat milk and say "it's great." Mr. Cooper plans to have several more goats under test in a few weeks.