بررسی تاثیر سطوح مختلف متیونین و چربی گیاهی بر برخی صفات اقتصادی جوجه گوشتی

نویسندگان

1 گروه علوم دامی ،دانشکده کشاورزی جیرفت دانشگاه شهید باهنر

2 گروه علوم دامی ،دانشکده کشاورزی جیرفت دانشگاه شهید باهن

3 دانش آموخته کارشناسی ارشد علوم دامی دانشگاه شهید چمران

4 گروه علوم دامی ،دانشکده کشاورزی دانشگاه شهید باهنر

چکیده

The effect of3levels of methionine (NRC recommended, 5 percent more than NRC recommended and 10 percent more than NRC recommended) and 2 levels of fat (0 and 5 percent) on some economical traits (performance and carcass) of broilers using a 2x3 factorial experiment with completely randomized design based on two rearing stages, starter (0-3 wk) and grower (4-6 wk) was studied. ANOVA of the effects of dietary treatments on traits and Duncan's multiple range test to compare means revealed that methionine levels had significant effect on live weight gain and improvement of feed conversion ratio in starter (p<0.05), grower and total period (p0.05). Carcass traits were not significantly affected by different levels of fat (p>0.05) but methionine levels decreased abdominal fat yield and increased breast yield significantly (p<0.05). The interactions between methionine and fat levels were not significant (p>O.05). Therefore it can be concluded that using methionine up to 10 percent more than NRC recommended and fat up to 5 percent of diet, except in starter, is recommendable in broiler diets

عنوان مقاله [English]

STUDYING THE EFFECT OF DIFFERENT LEVELS OF METHIONINE AND FAT ON SOME ECONOMICAL TRAITS OF BROILERS

نویسندگان [English]

  • Seyad Hossein Nejad sajadi 1
  • Norteza Sattai Mokhtari 2
  • Jalal yosefi 3
  • Ali Mousa Pour 4
1
2
3
4
چکیده [English]

The effect of3levels of methionine (NRC recommended, 5 percent more than NRC recommended and 10 percent more than NRC recommended) and 2 levels of fat (0 and 5 percent) on some economical traits (performance and carcass) of broilers using a 2x3 factorial experiment with completely randomized design based on two rearing stages, starter (0-3 wk) and grower (4-6 wk) was studied. ANOVA of the effects of dietary treatments on traits and Duncan's multiple range test to compare means revealed that methionine levels had significant effect on live weight gain and improvement of feed conversion ratio in starter (p<0.05), grower and total period (p0.05). Carcass traits were not significantly affected by different levels of fat (p>0.05) but methionine levels decreased abdominal fat yield and increased breast yield significantly (p<0.05). The interactions between methionine and fat levels were not significant (p>O.05). Therefore it can be concluded that using methionine up to 10 percent more than NRC recommended and fat up to 5 percent of diet, except in starter, is recommendable in broiler diets

کلیدواژه‌ها [English]

  • broilers.
  • economical traits
  • fat
  • methionine
مجله تحقیقات دامپزشکی (Journal of Veterinary Research)
دوره 63، شماره 3 - شماره پیاپی 3
255 مجله تحقیقات دامپزشکی
مهر 1387
صفحه 203-208

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