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Experimental period layout. The experiment lasted since 1 February (one month prior to mating season) till end of June. Mating season started on 1 March and lasted till 15th of the same month. Whelping period lasted from 20 April till 5 May. From 24 May kits had access to solid feed and lactation. Weaning of kits was on 28 June, and after that, offspring were separated from their dams.
