|
|
Effect of probiotics supplement on performance of broiler chicks fed diets varying in protein content
|
|
|
Abstract: The present study was conducted to study the effects of some probiotics on performance of broiler chicks fed diets varying in protein content. Two hundred and forty, unsexed one-day old Arbor Acres broiler chicks were assigned to eight equal experimental groups. Two basal diets were formulated to contain the recommended (22 and 20%) and lower (20 and 18%) crude protein for starter (7-28 days) and grower (29-42 days), respectively. Diets were either supplemented or not with any of the tested probiotics being Bio-Top(B), Organic Green Culture (G) and Avi- Bac(A), each at 1.5 g/kg diets. The results indicated that supplemented broiler diets with different sources of probiotics significantly (P≤ 0.05) increased body weight gains during the overall period of broiler growth compared with those fed diets probiotics free. No significant differences were observed in body weight gains due to either crude protein levels or their interaction with probiotics. Birds fed diets supplemented with Green culture at low crude protein level numerically gave the highest body weight gain compared with other groups of birds while control group of birds at low level of protein recorded the lowest values of body weight gains. Chicks fed low CP diets consumed significantly higher amounts of feed and recorded inferior feed conversion values compared to those fed the recommended CP level. Birds fed supplemented diet with either Bio- Top or Green Culture at recommended CP level numerically gave best feed conversion values. No significant differences were detected due to either probiotics or protein levels on digestibility coefficients. There was a significant (P<0.05) increase in dressing of birds fed diets at recommended level of crude protein compared with other birds fed diets at low level crude protein . Avi -Bac recorded the superior value of dressing while, control group of birds recorded the lowest value of dressing. The results of plasma constitutions revealed that no adverse effects due to either crude protein levels or different sources of probiotics. It seemed that probiotics had a slight effect in increasing total plasma protein and globulin values, while reduced total lipid and cholesterol values. In conclusion, probiotics at 1.5 kg/ton of feed
|
| Publication year |
2007
|
| Availability location |
معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
|
| Availability number |
|
| Organization Name |
|
| City |
شرم الشيخ
|
| serial title |
4th World Poultry Conference
|
| Author(s) from ARC |
|
| External authors (outside ARC) |
عبد الله على غزاله
جامعة القاهرة
|
| Agris Categories |
Animal feeding
|
AGROVOC
TERMS |
Broiler chickens.
Carcass composition.
Cholesterol.
Digestibility.
Feed conversion efficiency.
Feed intake.
Probiotics.
Proteins.
Weight gain.
|
| Proposed Agrovoc |
Bio-Top;Organic Green Culture;Avi- Bac;
|
| Publication Type |
Conference/Workshop
|