
The histology of corpora amylacea in mammary glands of Madras red sheep was recorded during various stages of physiological phases. The corpora amylacea were observed as round, oval or irregular cauliflower shaped concentrically laminated bodies. These were seen in their various stages of formation and located both in the lumen of alveoli and septal connective tissue. The occurrence of corpora amylacea increased gradually from lactating mammary glands and observed more in late lactation and dry mammary glands during involution. A gradual increase in both size and numbers of corpora from parturition to late lactation suggested that the development of these structures accelerated as lactation progressed and these structures may have a role in the involutionary process.