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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2011 > Volume 10 Number 9 > M.S. Babiker, S.A. Abbas, C. Kijora and J. Danier

The Effect of Dietary Protein and Energy Levels During the Growing Period of Egg-type Pullets on Internal Egg Characteristics of Phase One of Production in Arid Hot Climate

M.S. Babiker, S.A. Abbas, C. Kijora and J. Danier
Department of Poultry Production, Faculty of Animal Production, University of Gezira, Sudan 1 Department of Poultry Production, Faculty of Animal Production, University of Khartoum, Sudan 2 Institute of Animal Sciences, Humboldt-University of Berlin, Philippstr. 13, 10115 Berlin, Germany 3 Bioanalytik Weihenstephan, Nutrition and Food Research Center, 4 Technische Universit√§t M√ľnchen, Alte Akademie 10, D-85350 Freising
Abstract :

A (3 x 3) factorial arrangement was used in a completely randomized design to study the effect of protein and energy levels during the growing period of pullet on subsequent egg production performance. Three levels of protein and three levels of energy during stages of pullet growth (starter 0 to 6 wk, grower 7 to 12 wk and developer 13 to 18 wk of age) and their effect on laying performance (22 to 36 wk of age) were evaluated. In all phases of growing period, control levels of protein (P1) and energy (E1) were set according to NRC (1994) and the other levels were higher (P2 and E2) and (P3 and E3). A total of 9 treatments in each phase of the growth period were employed (P1 = 18, P2 = 20 and P3 = 22% CP) and (E1 = 3000, E2 = 3100 and E3 = 3200 kcal of ME/kg of diet) starter, (P1 = 16%, P2 = 18% and P3 = 20% CP) and (E1 = 3000, E2 = 3100 and E3 = 3200 kcal of ME/kg of diet) grower and (P1 = 15%, P2 = 17% and P3 = 19% CP) and (E1 = 3050, E2 = 3150 and E3 = 3250 kcal of ME/kg of diet) developer. Each treatment was replicated three times with ten birds each. Treatments in the factorial arrangement were kept the same for bird groups in every phase but at 19 week of age all groups were shifted to the layer diet up to the end of the trial. The layer performance of the different treatment groups was evaluated. In phase one of egg production cycle (22 to 36 week of age), egg mass was significantly (p<0.01) affected by dietary protein levels fed to the birds during the growing period. The higher dietary protein levels (P2 and P3) fed to the birds during the growing period had higher egg mass than those fed the lowest protein level P1. Egg weight was not influenced by dietary protein levels fed to the birds during the growing period. Egg weight and egg mass were not affected by dietary energy levels fed to the birds during the growing period. Internal egg characteristics from 22 to 36 weeks of age were not affected by protein and energy levels during the growing period. The only exception was yolk weight, which was significantly (p<0.05) higher for the birds fed the medium protein level (P2). Thus, feeding the higher protein levels (P2 and P3) had the highest egg mass. The best egg mass was recorded with P2E3 diet. There was an interaction effect (p<0.05) between protein and energy for yolk weight and height and Haugh units.

Keywords :
Dietary protein, energy, pullets, growing period, egg characteristics

Date Deposited : 23 Feb 2015 10:13

Last Modified : 23 Feb 2015 10:13

Official URL: http://www.pjbs.org

Volume 10, Number 9, - 2011 , ISSN 1682-8356

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