تأثير مستوى الطاقة الاستقلابية في بعض المؤشرات الإنتاجية للرومي تحت الظروف المحلية

Abstract EN

The research was carried out at private farm located in west region of Homs on hybrid strain of turkey, Big6, BUT (British United Turkey)between 1/4/2014 and 4/8/2014.

A total of 750birds of turkey divided in 2 groups based on the gender (male and female)were distributed to five nutritional groups, each contained 150 birds (75 males +75 females with three replicates per each (25 birds\replicate).

Birds were fed according to their age as follows: The first phase (1-4 weeks)e, the second (5-12 weeks), and the third (13-18 weeks), at each stage, five diets differed in the level of metabolic energy (ME) and crude protein were provided.

The first diet contained (+5% ME ),the second (+5% ME and+ 10% P), the third control, the forth reduce energy ratio by(5%), the fifth reduced energy and protein ratio by (5%) in order to investigate the optimal feed diets for fattening and gaining profit of turkey.

Results showed: Increasing energy level in the male diet shad a positive impact on all the studied productive indicators, the live weigh was increased by about3.84 and 2.4% at 16 and 18 weeks of age.

respectively The increase in level of metabolic energy and crude protein (group II) had a positive effect on turkey females; the live weight was improved by about1.6 and 2.5% at 16 and 18 weeks of age respectively.

Raising energy level caused better carcass characters, where the percentage of breast meat, thigh and drumstick were superior in both males and females of tested groups of turkey in comparison to those in the control.

The dressing percentage of males was increased in the first group by (0.2%), and this percentage in turkey males was higher than that in the females of the same grup.

The increase in the energy level in turkeys diets led to decrease in the profit index by 24.9% for a male and 14.8% for a female compared to the control and increased the productivity per square meter of the floor by about 3.86% and 0.75% at 16 weeks of age, and 1.93 and 1.21% at 18 weeks of age for male and female respectively.