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English :
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Growth performance and carcass traits of broiler chicks as affected by different levels of protein and methionine supplementation
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Arabic :
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معدل النمو وصفات الذبيحة في كتاكيت التسمين وتأثرها بمستويات مختلفة من البروتين والميثيونين
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| Abstract |
The present work aimed to study the effect of different levels of protein ( 17, 19, 21 and 23% ) and methionine ( 0.0 and 0.1% ) supplementation in the diet during starting (1-28 days) and finishing (29-49 days) periods on Avine broiler chicks performance. A total of 720 survived chicks aged one day were randomly divided into 2 similar equal groups, (360 EACH). Each group divided also randomly to sex subgroups, ( 60 each). Body weight, weight gain, feed intake, feed conversion , protein efficiency ratio, carcass traits, chemical composition and feed cost/Kg gain were estimated.
The results showed that, chicks fed high protein diets (23%) and methionine (0.1%) during starting period increased (P<0.01) final body weight, body weight gain, feed intake, feed conversion and feed cost of kilogram body weight gain when compared to chicks fed low protein diets ( 21%) without methionine. However, protein efficiency ratio was not affected significantly. Chicks fed high protein diets(21%), during growing period (29-49 days) increased (P<0.01) final body and body weight gain when compared with chicks fed medium (19%) or low (17%) protein in the diets. In addition, the high level of CP in the diet caused a significant (P<0.01) increase in each of feed conversion and protein efficiency ratio. However, feed cost of 1Kg body weight was not affected due to high level of CP and significantly (P<0.01) due to methionine supplementation at growing diets. Increased CP level and 0.1%methionine in diet either starter or finishing caused a significant (P<0.01) increase in carcass weight and protein content and significantly (P<0.01) decreased liver ash content (P<0.01) and abdominal fat. However, methionine supplementation either in starter or finishing diets caused a significant (P<0.01) increase in each of carcass, blucked and giblet weights.
Keywords: Broiler, growth, protein, methionine, carcass.
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| Publication year |
2001
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| Pages |
485-501
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| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى- الجيزة
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| City |
قناة السويس
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| serial title |
Second International Conferences On Animal Production& Health in Semi Arid Areas.Suez Canal University
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| Author(s) from ARC |
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| External authors (outside ARC) |
شريف محمد سنبل
جامعة الزقازيق
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Broiler chickens.
Carcass composition.
Growth.
Methionine.
Proteins.
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| Publication Type |
Conference/Workshop
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