The study was taken place at the experimental station (kharabo), Faculty of
Agriculture, Damascus University, 1464 - one day old chicks of the hybrid
Lohmann were used to determine the effect of adding different levels of
methionine without or wit
h lysine on some of carcass traits. Chicks were
divided randomly and equally into 8 groups (183 each) at the first day with 3
replicates for every group (61 each).
The study was carried out at the experimental station, Faculty of
Agriculture. Damascus University. 1464 of the hybrid Lohman broiler chicks,
one day old, were divided randomly and equally into 8 groups (182 chicks/ G)
with 3 replicates of 61 chic
ks each. Chicks in each replicate were reared
separately on deep litter in an independent room of open housing till the age of
42 days. All housing and management procedures were similar for all chicks
while the feeding was different throughout the fattening period in terms of the
amounts of lysine and methionine added to the mix feed. Chicks of G1, G2, G3
and G4 were fed on plants mixtures supplemented with 1, 1.5, 2 and 2.5 kg/ ton
of methionine, respectively. Chicks in G5, G6, G7 and G8 were fed on the same
mixtures of the previous groups but supplemented additionally with 1kg/ton of
lysine. Result showed that adding lysine 1kg/ton and methionine 2kg/ton to
plant mixtures of feeds of broiler helped in improving significantly most of the
indicators of productivity and this in turn led to a reduction of the cost of
feeding and to produce 1 kg live weight, thereby raising the index profit from
the process of fattening and increasing the gain from fattening process.
The research was carried out using 1728 broiler chicks (shifer starbro
hybrid), They were divided into eight groups, each one consists of three
replicates with 72 birds in every repetition .The birds of all repetitions were
fattened until 49 days
in separate pen of open type walk ,and on deepbedplate
.All conditions of placement, rearing and feeding were the same for all birds of
repitition in different groups.
نفذ البحث على 925 صوص فروج من الهجين المسمى (لوهمان)، وزعت بالتساوي إلى خمس
مجموعات بمعدل 185 طيرًا في كل مجموعة، سمنت طيور كل مجموعة في غرفة مستقلة من النموذج
المفتوح، و كانت جميع ظروف الإيواء و الرعاية واحدة لجميع المجموعات. كما غذيت طيور جميع ال
مجموعات خلال المرحلة الأولى (1-14 يومًا من العمر) على خلطة نباتية خالية من الشعير و الأنزيمات، أما خلال المرحلتين الثانية ( 15 - 35 يومًا من العمر) و الثالثة ( 36 - 49 يومًا من العمر) فقد غذيت
مجموعات الطيور المختلفة على خلطتين نباتيتين بعد إدخال الشعير المحلي مع الأنزيمات إلى كل منها
بنسبة 0% للمجموعة الأولى (الشاهد)، 20 % للمجموعة الثانية، 30 % للمجموعة الثالثة، 40%
للمجموعة الرابعة، 50 % للمجموعة الخامسة.
The research was carried out on two classes of hatching eggs obtained
from broiler breeder flock ( shifer starbro- Hybird ) 39 and 59 wk of age .
In each class the hatching eggs were graded into three groups according
to their weights.
The hatchi
ng eggs of each group were divided into three replicates .
Eggs of all replicates were incubated in the same incubator . At hatching
(115) chicks were taken from each replicate and fed in separate pen until 7
weeks of age . All conditions of housing, rearing and feeding
( vegetable diets ) were same for all birds of all replications.
The research was carried out on 1774 chicks of sexual separate chicken from
the hybrid Hibrd. The chicks were distributed into five groups, every group
contained three repelications, and the chicks were fattened until the age of six
weeks. The pro
gram of feeding and sex was as the following in every group:
The first group /control/: Its birds were both male and female /not sexual
separate fattening/, they were fed on three vegetal mixtures
according to age stages.
The second group: Its birds were only male, and it was fed on three vegetal
mixtures according to age stages /the mixtures of control group /.
The third group: Its birds were only female, and it was fed on three vegetal
mixtures according to age stages /the mixtures of control group/.
The fourth group: Its birds were only male, it was fed according to age stages
on three vegetal mixtures, which were distinguished by there high
content of metabolic energy and raw protein, with comparison
between them and the mixtures of control group.
The fifth group: Its birds were only female, it was fed on three vegetal
mixtures, according to age stages, which were distinguished by
there low content of metabolic energy and raw protein with
comparison between them and the mixtures of control group.
تم تنفيذ البحث على ٧٤٦ صوص فروج من الهجين المسمى (لوهمان)، وزعت هذه الصيصان منذ
اليوم الأول من العمر إلى أربع مجموعات بمعدل ١٨٦ ،١٨٦ ،١٨٧ ،١٨٧ ، طيرًا في كل مجموعة على
التوالي ، سمنت طيور كل مجموعة في غرفة مستقلة من النموذج المفتوح، كانت جميع ظروف
الإيواء
و الرعاية واحدة لجميع المجموعات خلال فترة التسمين التي استمرت حتى عمر ٧ أسابيع، كما غذيت
طيور جميع المجموعات خلال المرحلة الأولى (١-١٤ يومًا من العمر) على خلطة نباتية خالية من
الشعير و الأنزيمات و كسبة القطن المقشورة، أما خلال المرحلتين الثانية (١٥-٣٥ يومًا من العمر)
و الثالثة (36-٤٩ يومًا من العمر) فقد كانت تغذية المجموعات مختلفة.
