اثر سطوح مختلف کنجاله کلزا و آنزیم پروتئاز بر عملکرد، صفات کیفی تخم مرغ و قابلیت هضم مواد مغذی در مرغ های تخم گذار

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بوعلی سینا

2 استادیار، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بوعلی سینا

3 استاد، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بوعلی سینا

4 دانشیار، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بوعلی سینا

چکیده

این آزمایش به منظور بررسی اثر سطوح مختلف کنجاله کلزا و آنزیم پروتئاز بر عملکرد، صفات کیفی تخم­مرغ، قابلیت هضم مواد مغذی، فعالیت آمینوپپتیداز روده­ای و وزن نسبی اندام­های گوارشی در مرغ­های تخم­گذار از سن 28 تا 36 هفتگی انجام شد. 180 قطعه مرغ تخم­گذار سویه های­لاین W36 در قالب طرح کاملاً تصادفی به­صورت آزمایش فاکتوریل 2×3 شامل سه سطح کنجاله کلزا (صفر، 29/7 و 59/14 درصد) و دو سطح آنزیم پروتئاز (صفر و 200 گرم در تن) به شش تیمار، پنج تکرار و شش قطعه مرغ در هر تکرار اختصاص یافتند. در کل دوره آزمایش، عملکرد تولیدی مرغ­های تخم­گذار و صفات کیفی تخم­مرغ تحت تأثیر سطوح کنجاله کلزا و یا آنزیم پروتئاز قرار نگرفت (05/0<P). همچنین، اثر سطوح کنجاله کلزا و آنزیم پروتئاز بر انرژی قابل متابولیسم و قابلیت هضم پروتئین و ماده آلی جیره معنی­دار نبود (05/0<P). فعالیت آمینوپپتیداز دئودنوم (001/0>P) و ژژنوم (0511/0=P) در پرندگان تغذیه شده با 59/14 درصد کنجاله کلزا مکمل شده با آنزیم پروتئاز (به ترتیب 61/10 و 94/11 واحد به ازای میلی­گرم بافت)، به­طور معنی­داری افزایش یافت. همچنین، افزودن آنزیم پروتئاز، فعالیت آمینوپپتیداز دئودنوم را افزایش داد (74/7 در مقابل 69/6 واحد به ازای میلی­گرم بافت) (0103/0=P). نتایج این آزمایش نشان داد که می­توان کنجاله کلزا را تا سطح 59/14 درصد با آنزیم پروتئاز در جیره مرغ­های تخم­گذار استفاده کرد بدون این­که هیچ­گونه اثر منفی بر عملکرد تولیدی، صفات کیفی تخم­مرغ و قابلیت هضم مواد مغذی داشته باشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of different levels of canola meal and protease enzyme on performance, egg quality traits and nutrient digestibility in laying hens

نویسندگان [English]

  • S. Naderi Sahami Zamir 1
  • S. Mirzaie Goudarzi 2
  • A. A. Saki 3
  • P. Zamani 4
1 MSc. Graduated, Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
2 Assistant Professor, Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
3 Professor, Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
4 Associate Professor, Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
چکیده [English]

This experiment was conducted to consider different levels of canola meal (CM) and protease enzyme on performance, egg quality, nutrient digestibility, intestinal aminopeptidase activity, and relative weight of digestive organs of laying hens from 28 to 36 weeks of age. In total, 180 Hy-Line W-36 laying hens were allocated to six treatments, five replicates, and six laying hens in each replication in a factorial arrangement of 3×2 by a completely randomized design with three levels of CM (0, 7.29, and 14.59%) and two levels of protease enzyme (0 and 200 g/ton). For the entire experimental period, the productive performance of laying hens and egg quality were not affected by CM levels or protease enzyme (P>0.05). As well as, there were no significant effect of CM levels and protease enzyme on AMEn, protein, and organic matter digestibility of the diet (P>0.05). The aminopeptidase activity of the duodenum (P<0.01) and jejunum (P=0.0511) was significantly increased by 14.59% CM supplemented with protease enzyme (10.61 and 11.94 Unit/ mg of tissue, respectively). Duodenal aminopeptidase activity increased by protease enzyme supplementation (7.74 vs. 6.69 Unit/ mg of tissue) (P=0.0103). The results showed that CM can be included in laying hen diets up to 14.59% with protease enzyme without any adverse effect on productive performance, egg quality traits, and nutrient digestibility.
and in order to; used instead of "to", especially after try, come, go More (Definitions, Synonyms, Translation)

کلیدواژه‌ها [English]

  • Aminopeptidase enzyme
  • Protease
  • Performance
  • Canola meal
  • Laying hen

مراجع

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تحقیقات تولیدات دامی
دوره 9، شماره 4
اسفند 1399
صفحه 33-45

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