نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم دامی دانشگاه بیرجند- ایران
2 استاد گروه علوم دامی دانشگاه بیرجند- ایران
3 دانشیار گروه پژوهشی غذایی و فراورده های کشاورزی- پژوهشکده صنایع غذایی و فراورده های کشاورزی- پژوهشگاه استاندارد ایران
چکیده
اثر استفاده از سطوح مختلف کنجاله زیتون بر تولید، ترکیب شیر و وضعیت آنتی اکسیدانی شترهای تک کوهانه، آزمایشی با استفاده از نه نفر شتر تک کوهانه ترکمن با تولید شیر 7/0± 5 کیلوگرم در روز و میانگین وزن 30 ± 500 کیلوگرم در سه دوره سه هفته‌ای (14 روز عادت پذیری و هفت روز نمونه گیری) و در قالب طرح چرخشی با سه تیمار و نه تکرار بررسی شد. تیمارهای آزمایشی شامل: 1- گروه شاهد، 2- تیمار حاوی 15 درصد کنجاله زیتون و 3- تیمار حاوی 30 درصد کنجاله زیتون بودند. مصرف خوراک و تولید شیر تحت تأثیر تیمارهای آزمایشی قرار نگرفت. درصد و مقدار چربی و درصد پروتئین شیر (به ترتیب 5/2، 11/0 کیلوگرم و 66/2) در اثر استفاده از کنجاله زیتون در جیره کاهش یافت (05/0P<). تفاوتی در غلظت اکثر اسیدهای چرب و نسبت اسیدهای چرب امگا 6 به امگا 3 در شیر شترهای تغذیه شده با جیره‌های آزمایشی مشاهده نشد اما غلظت اسید پالمتیک در شترهایی که 30 درصد کنجاله زیتون مصرف کردند، پایین‌تر از گروه شاهد بود (05/0P<). غلظت اسید اولئیک، اسید لینولئیک و اسید لینولئیک کونژوگه در شیر شترهای تغذیه شده با جیره حاوی 30 درصد کنجاله زیتون افزایش یافت (05/0P<). بر اساس نتایج این پژوهش، استفاده از کنجاله زیتون (تا سطح 30 درصد ماده خشک جیره) در تغذیه شتر می‌تواند اثرات مثبتی بر افزایش ارزش غذایی محصولات لبنی به ویژه در مناطق خشک و نیمه خشک داشته باشد.
کلیدواژه‌ها
عنوان مقاله [English]
The effect of olive cake on milk yield and composition and antioxidant status of Turkmen dromedary camels
نویسندگان [English]
- Mehran Takekhalaf 1
- Mohammad Hassan Fathi Nasri 2
- Ladan Rashidi 3
- Seyyed Homayoun Farhangfar 2
1 Department of Animal Science- University of Birjand-,Iran
2 Professor- Department of Animal Science- University of Birjand- Iran
3 Associate professor- Department of Food Technology and Agriculture Products Research Center- Standard Research Institute- Iran
چکیده [English]
The effect of using different levels of olive cake on production, milk composition and antioxidant atatus of dromedary camels, an experiment using 9 Turkmen dromedary camels with milk production of 5 ± 0.7 kg/day and average weight of 500 ± 30 kg a 3 three-week periods (14 days of adaptation and 7 days of sampling) was investigated in the form of a change over design with 3 treatments and 9 replications. The experimental treatments were included: 1- control group, 2- treatment containing 15 percent olive cake and 3- treatment containing 30 percent olive cake. Feed intake and milk production were not affected by experimental treatments. Milk fat percent a nd yield and milk protein percent (2.5, 0.11 kg and 2.66, respectively) decreased due to use of olive cake in the diet (P<0.05). There was no difference in the concentration of most of fatty acids and the ratio of omega-6 to omega-3 fatty acids in the milk of camels fed experimental diets, but concentration of palmitic acid in camels that consumed 30 percent olive cake was lower than control group (P<0.05). According to the results of this research, the use of olive cake (in the level of 30 percent of ration DM) in camel feeding, may have positive effects on increasing the nutritional value of dairy products especially in arid and semi-arid areas.
کلیدواژه‌ها [English]
- Antioxidant indicators
- Fatty acids
- Milk
- Olive cake
- Turkmen camel
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