تأثير إضافة مستويات مختلفة من البيتين (Betaine)‎ إلى العليقة في بعض الصفات النوعية للذبيحة لطائر السمان الياباني المعرض للإجهاد الحراري

الملخص EN

This study was conducted at the poultry farm dept of Animal science College of Agriculture – AlQasim Green University from 17/10/2014 To 4/12/2015 to investigate the effect of Betaine addition to the diet on some qualities for Carcass characteristics of Japanease quail under to heat stress.

300 unsexed birds were used for the study .

Birds were raised in cages and randomly distributed into 5 treatments with 3 riplicates / treat and 20 birds per riplicate, birds exposed to the temperature droah( 28-36-28)˚C.

Treatments as follows : T1: Control treatment (without addition) .

T2 : Control diet with addition of Betaine at rate of 500mg /kg .

T3 : Control diet with addition of Betaine at rate of 1000 mg /kg .

T4 : Control diet with addition of Betaine at rate of 1500 mg /kg .

T5 : Control diet with addition of Betaine at rate of 2000 mg /kg .

The results were as follows: There was a significant (p<0.01) superiority in dressing percentage for birds treated with betaine as compared with those of control treatment .

A significant (p<0.01) superiority in the weigh of Chest muscle was also noticed for birds of T2 and T5 as compared with those of T1 and T4 .

There was a significant (p<0.01) increase in thw total weight of chest meat and decrease in abdominal fat in birds of betaine treatments as compared with those of control treatment .