The role of cerebellum in learned vocal communication in adult songbirds.

Injury, tumors, ischemia, and lesions in the cerebellum show the involvement of this region in human speech. The association of the cerebellum with learned birdsong has only been identified recently. Cerebellar dysfunction in young songbirds causes learning disabilities, but its role in adult songbirds has not been established.

Effect of blue and red monochromatic light during incubation on the early post-embryonic development of immune responses in broiler chicken.

1. The light regime during incubation can influence embryonic and post-embryonic life and its effects can be mediated by rhythmic melatonin production in the embryonic pineal gland.2.