Investigating the physicochemical and fermentation characteristics of the lime pulp silage treated with molasses

Document Type : Full Article


Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz I.R. Iran



This study aimed to determine the effects of adding molasses on the physicochemical and silage fermentation characteristics, and in vitro ruminal fermentation parameters of fresh and ensiled lime pulps. This research was conducted in the form of a completely randomized design with four treatments including fresh lime pulp without additives (FLP), fresh lime pulp mixed with molasses; (FLPM), fresh lime pulp silage (LPS), and fresh lime pulp silage mixed with molasses (LPMS). Three replications were performed in each treatment Digestibility and gas production were determined using rumen liquid taken from two male Ghezel sheep. The results revealed that the application of molasses had no significant impact on the amount of dry matter. However, a marked distinction (P<0.05) was observed between the treatments regarding neutral detergent fiber (NDF), acid detergent fiber (ADF), ash, pH, and water holding capacity (WHC). The potential of gas production for FLPM was significantly (P<0.05) higher than that of other treatments. The addition of molasses to fresh lime pulp enhanced (P<0.05) the digestibility of dry matter in the rumen and total digestive tract. However, the presence of molasses in lime pulp silage reduced (P<0.05) the digestibility of dry matter in the rumen and total digestive tract. The results of this study suggested that the use of molasses would enhance fermentation and digestion by altering the composition of pectin in fresh lime pulp. While the lime pulp can be ensiled without molasses, the addition of molasses boosts the nutritive value and digestibility of silage.


Main Subjects

Article Title [Persian]

بررسی ویژگی‌های فیزیکوشیمیایی و تخمیری سیلوی تفاله لیمو‌ترش تیمار شده با ملاس

Authors [Persian]

  • مهران جلیلی
  • حمید محمدزاده
  • علی حسین خانی
  • اکبر تقی زاده
گروه علوم دامی، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ج.ا. ایران
Abstract [Persian]

هدف از مطالعه حاضر تعیین اثرات کاربرد ملاس بر ویژگی‌های فیزیکوشیمیایی و تخمیر سیلویی و قابلیت هضم تفاله لیمو‌ترش تازه و سیلو شده بود. این پژوهش در قالب طرح کاملاً تصادفی با جهار تیمار و سه تکرار در هر تیمار انجام شد. تیمارها شامل تفاله لیمو‌ترش تازه بدون مواد افزودنی (FLP)، تفاله لیمو‌ترش تازه مخلوط با ملاس (FLPM)، سیلو تفاله لیمو‌ترش (LPS) و سیلو تفاله لیمو‌ترش تازه مخلوط با ملاس (LPMS) بودند. برای بررسی قابلیت هضم و تولید گاز، مایع شکمبه از دو گوسفند نر نژاد قزل گرفته شد. نتایج نشان داد که اثر افزودن ملاس بر میزان ماده خشک معنی‌دار نبود. با این حال، بین تیمارها از نظر NDF، ADF، خاکستر، pH و ظرفیت نگهداری آب تفاوت معنی‌داری (0.05>P) وجود داشت. پتانسیل تولید گاز برای FLPM به طور معنی‌داری (0.05>P) بیشتر از سایر تیمارها بود. افزودن ملاس به تفاله لیمو‌ترش تازه باعث افزایش (0.05>P) قابلیت هضم ماده خشک در شکمبه و کل دستگاه گوارش شد. در ﻋﯿﻦ ﺣﺎل قابلیت هضم ماده خشک در شکمبه و کل دستگاه گوارش، با افزودن ملاس به سیلاژ لیمو‌ترش کاهش داشت (0.05>P). نتایج این مطالعه نشان داد که ملاس می‌تواند از طریق تغییر در ساختار پکتین موجود در تفاله لیمو‌ترش تازه برای بهبود کیفیت تخمیر و هضم آن مورد استفاده قرار گیرد. تفاله لیمو‌ترش را می‌توان بدون افزودن ملاس سیلو نمود؛ اما با افزودن ملاس قابلیت هضم و ارزش غذایی سیلاژ بهبود می‌یابد.

Keywords [Persian]

  • پکتین
  • تفاله لیمو‌ترش
  • ظرفیت نگهداری آب
  • قابلیت هضم ماده خشک
  • نشخوارکنندگان
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