Show twin births of calves found to be seasonal I 1 L J cole and A rodolfo of the university of wisconsin have been studying the american hereford and aberdeen angus herd book records and have found that there la Is a tendency tor for more twin births to occur during the months of late summer and early fall than at iny any other season of 0 the year ear ti ane largest number of twin calves are born during the mouth month of august from that time there Is a decline in frequency of plural births until the low point Is reached in the month of march after which the numb number r again begins to increase the average number of twin births Is 3 per 1000 cows la in march uie the num number her sinks down to if raises to for august and there Is a gradual I 1 but distinct variation in the number aej pe month from march to august and then back again |