The Significance of Dietary Energy for the Production Parameters of Feedlot Ostriches

Authors:Nicholas Russell


Energy is essential for the continued survival of any living thing. In ostrich feed, energy usually comes from corn. Due to drought conditions, corn is often affected by fluctuations in production. Therefore, the optimal use of energy in the ostrich diet has become crucial, but it will not negatively affect the performance of poultry. The purpose of this study was to study the effect of five diets (each with different energy concentration) on the growth performance of 300 slaughtered ostriches. Each treatment was repeated three times, resulting in 15 ostrich camps undergoing four stages from pre-starter to starter, and then growing to the final breeding. At the beginning of the chicks, the mortality rate was high. After pre-starter, there was a significant difference between the live weights of poultry, with poultry consuming a medium diet (Diet 3) the heaviest, with an average of 22.3 ± 0.33 kg. However, by the end of the experiment, these differences were not significant. This is reflected in production parameters, namely dry matter intake (DMI), average daily gain (ADG) and feed conversion rate (FCR). The difference was found only in the pre-starter phase of ADG. Diet 3 showed a maximum daily weight gain of 216.0 ± 8.08 g. The high mortality rate experienced during the pre-starter phase of the trial may have contributed to findings that to an extent, contradictory to previous studies that investigated the impact of energy on production of ostriches.

Full Text:



Adabi, S.G., A.H. Babaei, G. Moghaddam, A. Taghizadeh, T. Farahvash, H. Lotfollahian and F.M. Pour. 2008. L-Carnitine effect on quantity and quality of African black neck ostrich sperm. Journal of Animal and Veterinary Advances, 7 (1): 51-55.

Adabi, S.H.G., M. Ahbab, A.R. Fani, A. Hajbabaei, N. Ceylan and R.G. Cooper. 2013. Egg yolk fatty acid profile of avian species - influence on human nutrition. Journal of Animal Physiology and Animal Nutrition, 97 (1): 27-38.

Bennett, D.C., A. Kaneko and Y. Karasawa. 2012. Maintenance nitrogen requirements of adult female ostriches (Struthio camelus). Journal of Animal Physiology and Animal Nutrition, 96 (4): 600-609.

Brand, T.S., P.D. Carstens and L.C. Hoffman. 2014. The effect of dietary energy concentrations on production variables of ostrich chicks (Struthio camelus var. Domesticus). British Poultry Science, 55 (5): 610-618.

Brand, T.S., G.A. Tesselaar, L.C. Hoffman and Z. Brand. 2014. The effect of different dietary vitamin and mineral levels on certain production parameters, including egg shell characteristics of breeding ostriches. South African Journal of Animal Science, 441 (5): S51-S57.

Brand, Z., T.S. Brand and C.R. Brown. 2003. The effect of dietary energy and protein levels on production in breeding female ostriches. British Poultry Science, 44 (4): 598-606.

Cloete, S.W.P., S.J. van Schalkwyk, T.S. Brand, L.C. Hoffman and C.J. Nel. 2006. The effects of dietary energy and protein concentrations on ostrich skin quality. South African Journal of Animal Science, 36 (1): 40-44.

Glatz, P.C., Z.H. Miao, B.K. Rodda and S.C. Wyatt. 2008. Effect of diets with different energy and protein levels on performance of grower ostriches. Australian Journal of Experimental Agriculture, 48 (10): 1338-1340.

Nikravesh-Masouleh, T., A. Seidavi, M. Kawka and M. Dadashbeiki. 2018. The effect of dietary energy and protein levels on body weight, size, and microflora of ostrich chicks. Tropical Animal Health and Production, 50 (3): 635-641.

Polawska, E., D. Tolik, O.K. Horbanczuk, A. Cieploch, K. Raes and S. de Smet. 2016. The effect of dietary oil seeds on the fatty acid profile and metabolism in ostrich liver. Animal Science Papers and Reports, 34 (2): 173-180.

Qureshi, S.S., M. Jamal, M.S. Qureshi, M. Rauf, B.H. Syed, M. Zulfiqar and N. Chand. 2012. A review of halal food with special reference to meat and its trade potential. Journal of Animal and Plant Sciences, 222: 79-83.

Tasirnafas, M., A. Seidavi, B. Rasouli and M. Kawka. 2015. Effect of vegetable wastage and energy in ostrich chick diet on performance and hematology. Tropical Animal Health and Production, 47 (6): 1017-1026.


  • There are currently no refbacks.