1. Baldwin BA and Cooper TM. The effects of olfactory bulbectomy on feeding behaviour in pigs. Applied Animal Ethology, 5: 153-159. 1979.
2. Brenes A and Roura E. Essential oils in poultry nutrition: Main effects and modes of action. Animal Feed Science and Technology, 158: 1-14. 2010.
3. Bryant BP and Mezine I. Alkylamides that produce tingling paresthesia activate tactile and thermal trigeminal neurons. Brain Research, 842: 452-460. 1999.
4. Bungo T, Shiraishi J and Kawakami SI. Hypothalamic melanocortin system of feeding regulation in birds: a review. Journal of Poultry Science, 48: 1-13. 2011.
5. Cheva-Isarakul B and Tangtaweewipat S. Effect of different levels of sunflower seed in broiler rations. Poultry Science, 70: 2284-2294. 1991.