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اثرات تغذیه منابع مختلف چربی در اواخر آبستنی و اوایل دوره شیردهی بر عملکرد تولیدی و فراسنجههای خونی میشهای افشاری | ||
پژوهش های علوم دامی (دانش کشاورزی) | ||
دوره 34، شماره 1، خرداد 1403، صفحه 1-16 اصل مقاله (424.73 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22034/as.2022.30545.1465 | ||
نویسندگان | ||
مهدی قهرمانی* 1؛ اکبر تقی زاده2؛ علی حسین خانی2؛ حمید رضا میرزایی الموتی3؛ غلامعلی مقدم2؛ حمید پایا2 | ||
1دانشجوی دکتری گروه علوم دامی دانشکده کشاورزی دانشگاه تبریز. | ||
2گروه علوم دامی دانشکده کشاورزی دانشگاه تبریز | ||
3گروه علوم دامی دانشکده کشاورزی دانشگاه زنجان | ||
چکیده | ||
زمینه مطالعاتی:چربی میتواند جهت بهبود وضعیت انرژی، افزایش غلظت انرژی جیره و حداقل کردن توازن منفی انرژی مورد استفاده قرار گیرد. هدف: در این مطالعه تأثیر منابع مختلف چربی در اواخر آبستنی و اوایل دوره شیردهی بر عملکرد تولیدی و فراسنجههای خونی میشهای افشاری مورد بررسی قرار گرفت. روش کار: جهت انجام این آزمایش 50 رأس میش افشاری در قالب طرح کاملاً تصادفی به پنج جیره آزمایشی اختصاص داده شدند. تیمارهای آزمایشی شامل: 1- جیره شاهد بدون مکمل چربی؛ 2- جیره حاوی 3 درصد پودر چربی محافظت شده اسیدهای چرب اشباع (روغن پالم)؛ 3-جیره حاوی 3 درصد مکمل نمک کلسیمی اسیدهای چرب امگا-6 (روغن سویا)؛ 4- جیره حاوی 3 درصد نمک کلسیمی اسیدهای چرب امگا-3 (روغن ماهی)؛ 5- جیره حاوی 2 درصد پودر چربی محافظت شده اسیدهای چرب اشباع (روغن پالم) و 1 درصد فرآورده حاوی اسید لینولئیک مزدوج (CLA). نتایج: مادهی خشک مصرفی قبل از زایش در جیرههای حاوی اسیدهای چرب اشباع، اسیدهای چرب امگا-6 و اسیدهای چرب امگا-3 کاهش یافت (01/0P<). بر خلاف قبل از زایش افزودن منابع چربی به جیره بعد از زایش بهصورت معنیداری باعث افزایش ماده خشک مصرفی میشها شد (01/0P<). تولید شیر در جیرهی حاوی منبع اسیدهای چرب امگا-3 و جیره حاوی ترکیب پودر چربی محافظت شده اسیدهای چرب اشباع با CLA نسبت به سایر تیمارها بیشتر بود (01/0P<). پودر چربی محافظت شده اسیدهای چرب اشباع باعث افزایش درصد چربی شیر شد (05/0P<). سایر ترکیبات شیر و آغوز تحت تاثیر تینارها قرار نگرفت. تغذیه نمک کلسیمی اسیدهای چرب امگا-6 باعث افزایش غلظت کلسترول خون نسبت به تیمار شاهد شد (05/0P<). نتیجهگیری نهایی: نتایج این مطالعه نشان داد که تغذیهی منابع مختلف چربی باعث افزایش ماده خشک مصرفی بعد ازایش و از بین منابع چربی، تغذیه نمک کلسیمی اسیدهای چرب امگا-3 و ترکیب اسیدهای چرب اشباع با CLA باعث افزایش تولید شیر میشهای افشاری شد. | ||
کلیدواژهها | ||
اسید لینولئیک؛ اواخر آبستنی؛ روغن ماهی؛ روغن پالم؛ دوره انتقال؛ میش | ||
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