1. Research update: age related changes in digestibility of nutrients in ostriches and nutrient profiles of ostrich and emu eggs as indicators of nutritional status of the hen and chick;Angel,1993
2. The lesser rhea in the Argentine Puna region: present situation;Cajal;Biol. Conserv.,1988
3. Microscopic Anatomy of the Digestive System of the Chicken;Calhoun,1954
4. Feedstuffs evaluation in ostriches (Struthio camelus);Cilliers,1995
5. True and apparent metabolizable energy values of lucerne and yellow maize in adult roosters and mature ostriches (Struthio camelus);Cilliers;Anim. Prod.,1994