Do you want to publish a course? Click here

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

1219   0   11   0 ( 0 )
 Publication date 2003
  fields Animal Production
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

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.


Artificial intelligence review:
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
rate research

Read More

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.
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.
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.
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 on (960) broiler chicks of the hybrid Hibrd in the Poultry Unite of Kharabo–Agriculture Faculty–Damascus University, during 27/10/2003 and 23/12/2003. The chicks were distributed randomly since the first day of age int o four experimental groups, every group contained 240 chicks distributed as four replicates, every replication contained 60 chicks, the area of the replication was 5.5m2 and the density was 11 chicks/m2. Every replication is an independent sector from byre is open type on deep litter, all conditions of keeping and caring were the same for all birds of replications. The purpose of research was to study of effect of using different levels of the energy and raw protein into mixtures of (pre-starter) since the first day until sixth day of age on absorption of yolk sac, growth of digestive system ,and some productive parameters of broiler. 48 chicks were dissected, the chicks were distributed as 16 chicks in the first day and 16 chicks in the fourth day and 16 chicks in the sixth day of age, from every group 4chicks were evaluated.

suggested questions

comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا