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The effect of parent age and hatching egg weight on productive parameters of broiler fed on vegetable mixtures

تأثير عمر الأمهات و وزن بيضة التفريخ في المؤشرات الإنتاجية للفروج المغذى بالخلطات النباتية

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 Publication date 2003
  fields Animal Production
and research's language is العربية
 Created by Shamra Editor




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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 hatching 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.


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Research summary
تناولت الدراسة تأثير عمر الأمهات ووزن بيضة التفريخ على مؤشرات الإنتاجية لفراريج اللحم التي تغذت على خلطات نباتية. أجريت التجربة على بيض تفريخ من قطيع أمهات فروج بعمر 39 و59 أسبوعًا، وتم تصنيف البيض إلى ثلاث مجموعات حسب الوزن: (A) 55.1-60 جرام، (B) 60.1-65 جرام، (C) 65.1-70 جرام. تم تقسيم البيض إلى مكررات وتم تفريخه في نفس الحاضنة. بعد الفقس، تم تربية الصيصان حتى عمر 7 أسابيع في ظروف متشابهة من حيث الإيواء والتغذية. أظهرت النتائج أن عمر الأمهات أثر بشكل معنوي على مؤشرات التفريخ التي انخفضت مع تقدم عمر الأمهات، بينما لم يكن لوزن البيضة تأثير معنوي على نسبة الخصوبة ونسبة الفقس. كما أن وزن البيضة أثر بشكل معنوي على وزن الصوص الفاقس، حيث زاد الوزن مع زيادة وزن البيضة. لم يكن لعمر الأمهات ووزن البيضة تأثير معنوي على نسبة النفوق والوزن الحي النهائي للفروج. ومع ذلك، أثر عمر الأمهات بشكل معنوي على الكفاءة الغذائية التي زادت مع تقدم عمر الأمهات، بينما لم يكن لوزن البيضة تأثير معنوي على هذا المؤشر. بناءً على هذه النتائج، يُنصح باستخدام الخلطات النباتية في تغذية الفروج لتحقيق كفاءة إنتاجية متجانسة بغض النظر عن وزن بيضة التفريخ.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة لأنها تسلط الضوء على تأثير عوامل مثل عمر الأمهات ووزن بيضة التفريخ على الإنتاجية في صناعة الدواجن. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن أن تشمل الدراسة عينات من أعمار مختلفة للأمهات لتقديم صورة أكثر شمولية. ثانيًا، لم يتم التطرق إلى تأثيرات بيئية أو صحية أخرى قد تؤثر على النتائج. وأخيرًا، كان من الممكن أن تكون هناك توصيات أكثر تفصيلاً حول كيفية تحسين الكفاءة الإنتاجية بناءً على النتائج المستخلصة.
Questions related to the research
  1. ما هو تأثير عمر الأمهات على مؤشرات التفريخ؟

    أثر عمر الأمهات بشكل معنوي على مؤشرات التفريخ التي انخفضت مع تقدم عمر الأمهات.

  2. هل كان لوزن بيضة التفريخ تأثير على نسبة الخصوبة ونسبة الفقس؟

    لم يكن لوزن بيضة التفريخ تأثير معنوي على نسبة الخصوبة ونسبة الفقس.

  3. كيف أثر وزن بيضة التفريخ على وزن الصوص الفاقس؟

    أثر وزن بيضة التفريخ بشكل معنوي على وزن الصوص الفاقس، حيث زاد الوزن مع زيادة وزن البيضة.

  4. ما هي التوصيات التي قدمتها الدراسة بناءً على النتائج؟

    أوصت الدراسة باستخدام الخلطات النباتية في تغذية الفروج لتحقيق كفاءة إنتاجية متجانسة بغض النظر عن وزن بيضة التفريخ.


References used
Baher, J. M. and S.S . Palmer ،1989 . The influence of aging on ovarion function . Crit . Rev . Poult . Biol . 2:103 – 110
Etches, R., J. 1990. The ovulatory cycle of the hen . Crit .Rev. Poult. Biol . 2:293 -318
Fasenko, G. M, R.T Hardin and F . E . Robinson . 1992 Relationship of hen age and age and egg sequence position
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Two experiments were carried out to determine the effect of flock age on egg laying pattern, floor laying, egg weight, hatchability, fertility and body weight at hatch. Eggs were collected from 32and 43 wk old Cobb 500 broiler flocks for 6 consecu tive days hourly to study egg laying pattern and floor laying (experiment 1). In experiment 2, 2916 eggs from the flock at 32 ,43 and 49 wk old were used to determine the effect of flock age on egg weight, hatchability, fertility and body weight at hatch.
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