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تحقیقات دامپزشکی، جلد ۶۳، شماره ۳، صفحات ۲۰۳-۲۰۸
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| عنوان فارسی |
بررسی تاثیر سطوح مختلف متیونین و چربی گیاهی بر برخی صفات اقتصادی جوجه گوشتی |
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| چکیده فارسی مقاله |
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 |
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| کلیدواژههای فارسی مقاله |
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| عنوان انگلیسی |
STUDYING THE EFFECT OF DIFFERENT LEVELS OF METHIONINE AND FAT ON SOME ECONOMICAL TRAITS OF BROILERS |
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| چکیده انگلیسی مقاله |
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 |
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| کلیدواژههای انگلیسی مقاله |
broilers., economical traits, fat, methionine |
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| نویسندگان مقاله |
سید حسین نژاد سجادی | seyed hossein nezhad sajadi
گروه علوم دامی ،دانشکده کشاورزی جیرفت دانشگاه شهید باهنر
سازمان اصلی تایید شده: دانشگاه شهید باهنر (Shahid bahonar university)
مرتضی ستایی مختاری | sattaei mokhtari
گروه علوم دامی ،دانشکده کشاورزی جیرفت دانشگاه شهید باهن
جلال یوسفی |
دانش آموخته کارشناسی ارشد علوم دامی دانشگاه شهید چمران
سازمان اصلی تایید شده: دانشگاه شهید چمران (Shahid chamran university)
علی موسی پور |
گروه علوم دامی ،دانشکده کشاورزی دانشگاه شهید باهنر
سازمان اصلی تایید شده: دانشگاه شهید باهنر (Shahid bahonar university)
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| نشانی اینترنتی |
http://jvr.ut.ac.ir/article_23720_3785fc5c1343b76cf25711e909d9cb48.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/699/article-699-311509.pdf |
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| زبان مقاله منتشر شده |
fa |
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