ارزیابی تاثیر آلاینده‌های زیست‌محیطی بر کارایی فنی گاوداری‌های شیری شهرستان سراب به روش تحلیل مرزتصادفی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 هیئت علمی گروه اقتصاد کشاورزی، دانشگاه ارومیه

2 فارغ التحصل کارشناسی ارشد اقتصاد کشاورزی از دانشگاه ارومیه

چکیده

صنعت دامداری به عنوان یکی از مهم­ترین زیربخش‌های کشاورزی است­، به­طوری که نقش مهمی در تولید مواد­غذایی پایه مانند شیر و گوشت دارد. بنابراین، هر ساله بایستی به‌منظور تامین تقاضای داخلی و صادرات مازاد تقاضا بر میزان تولید آن افزوده شود. با توجه به شبه رقابتی بودن بازار نهاده و ستاده محصولات دامی، یکی از راه‌های افزایش تولید و سود دامداری‌ها، افزایش کارایی واحدهای تولیدی است. لذا، هدف از این مطالعه، محاسبه کارایی فنی و کارایی زیست‌محیطی به روش تحلیل مرز تصادفی در گاوداری‌های شیری شهرستان سراب با استفاده از روش نمونه‌گیری تصادفی ساده و تکمیل پرسشنامه از 51 گاوداری شیری در سال 1394 است. یافته­های تحلیل مرز تصادفی نشان داد که میانگین کارایی فنی، 95 درصد و میانگین کارایی زیست‌محیطی (با لحاظ کردن آلاینده­­های نیتروژن و فسفر)، 72 درصد است. جهت مقایسه‌ی آماری اختلاف بین متوسط کارایی فنی و زیست‌محیطی از آزمون کروسکال-والیس استفاده شده است که نتیجه، معنی‌دار بودن اختلاف بین میانگین کارایی‌ها را تایید می‌کند. از آنجایی که مقدار انتشار آلاینده­های فسفر و نیتروژن به نوع جیره مصرفی بستگی داشت، پیشنهاد می­شود واحدهای تولیدی با مدیریت و بهبود کیفیت جیره گاوها، تولید آلایندهای زیست­محیطی به ازای هر تن تولید شیر را کاهش داده که از این طریق می­توان کارایی واحدهای تولیدی را افزایش داد.

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