A digestibility experiment was carried out using 105 unsexed chicks of a
commercial broiler breed taken from a hatchery nearby the farm of the
experiment. When the chicks started to hatch, the chicks were collected
without need to complete the operation of hatching to ensure that the
hatching chicks were hatched at the same time.
- The objective of this study was to assess the level of air
contamination by bacteria in the broiler houses in salamieh region
that Famed of commercial breedings of broiler and relationship
with some impact factors like (birds age- season-breedin
g system -
dust concentration) .
- The numbers of bacteria (mesophile , staphylococci , streptococci
and gram-negatives) and dust concentration were determined in 5
opened broiler houses and 5 closed broiler houses with chicken
houses in different ages (1-6 weeks old) in summer and winter .
This research carried out in the Video Center for Research on Animal Production of
the Faculty of Agriculture at Tishreen University with the beginning of the summer of
2010 in order to study the possibility of improving the performance of broiler
chickens
under the conditions of the coastal area and increase economic returns.
Search Results showed that the addition of black bean and thyme powder by 0.5% to a
low-energy diet led to increased average live weight of age (9-28) days totaled 864.9 g
G3)) compared to the control (without the addition), which amounted to an average live
weight has 850.7) g) of the same age
FCR feed conversion ratio stood at 2.63 at the group G1, compared with 1.89 when the
Control CSearch results also showed that the addition of 0.25% of the black bean and
thyme powder led to the live weight increase of 848.6, compared with 670.7 members G1)
g) FCR feed conversion ratio stood at 1.96 at the G4 Group added (0.25% of the black
bean powder and thyme), compared with 2.63 at the G1 group.
A total of 300 one day old chicks (150 broiler chicks,150 local
Syrian chicks) were raised for 6 weeks in order to determine the
performance traits (live body weight, FCR, ADG, Breast muscle
yield) There were 2 treatments 3 replication for each .a
nd at the end
of every week all birds were weighed and feed consumption rate
were calculated in order to calculate FCR and ADG Average daily
gain and 6 birds of each group were weighed and slaughtered in
order to determine the breast muscle yield.
Coccidiosis is one of the major parasitic diseases of poultry . The disease has s great economic impact in poultry due to resistance of the organisms to anticoccidial drugs.
Antimicrobial compounds have been used for decades in poultry diets to increase
performance and decrease morbidity particularly in broiler chickens. However, consumer
pressure related to the potential development of antibiotic-resistant bacteria ha
s resulted in
the development of non-antibiotic feed additives that may also improve broiler erformance.
In recent years, aromatic plants and their extracts have received attention as growth and
health promoters. Such products have several advantages over commonly used commercial
antibiotics since they are residue free and they are also, generally recognized as safe and
commonly used items in the food industry. The antimicrobial properties of medical plants
and their extracts have been widely reported because they consist of many active
ompounds such as carvacrol, eugenol,which partition lipids in the bacterial cell wall and
mitochondria, disturbing the structures and rendering them more permeable.
Generally,medical plants are slightly more active against Gram-positive than Gramnegative
bacteria. Medical plants are well known for their antioxidant activity and show a
considerable effect on increasing the antioxidant capacity of chicken meat because they
consist of many of active compounds such as tocopherol, carvacrol. Spices or their active
principles have been reported to stimulate digestive secretions such as lipase, amylase and
proteases.because they consist of many active compounds such as anothol, eugenol.
Variable effects of medical plants and their extracts on the productive performance of
broiler have been reported. The majority of experimental results indicate improved body
weight gain or final body weight and feed conversion ratio.
This study included a test of 90 chickens; 90 samples as (a chest) and 90 samples as (a thigh). These samples were divided into four categories: the first one (45 chests) was stored with packages in a tin sheet, the second (45 chests) unpacked, the t
hird (45 thighs) was stored with packages in a tin plate, the fourth (45 thighs) unpacked. The samples of each category were divided into three groups. Each group consists of 15 samples. These groups were stored at (25+°, 4+°, 20-°) .Then, the pH and the total count of bacteria were measured during storage in order to observe the time in which the samples will start to spoil in accordance with the Syrian Standards and Specifications Corporation 2007. We noticed the following physical changes: color, odor, flavor and texture. The results showed that the spoilage of the thigh samples happened before the chest ones and the packaged samples before the unpackaged ones. The samples spoiled after 24h of storage at 25+° and after 7 days of storage at 4+°, whereas, there was no spoilage noticed for the samples at 20-° but the appearance changed after 6 months of storage. Packing had a good effect on preservation. The conclusions and the suggestions were written in order to guide the consumer in the field of poultry meat storage.
This study was conducted at the laboratories of Food Science Department,
Faculty of Agriculture, Damascus University to assess the indicators
determining the optimum time and final critical temperature required for
forming the meat emulsions.
دراسة إضافة كل من اليانسون والبابونج والقرفة والثوم إلى خلطات فروج اللحم وتأثيرها في بعض المؤشرات الإنتاجية والفيزيولوجية والصحية
أجري البحث في مدجنة خاصة تقع في المدينة الصناعية على بعد حوالي 10 كم من مدينة دير الزور وقد ربيت الطيور بعمر واحد وحتى ست أسابيع
