نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار، گروه شیلات، دانشکده علوم دامی و شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.

2 کارشناسی ارشد ،گروه شیلات، دانشکده علوم دامی و شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران

3 مربی، گروه شیلات، دانشکده علوم دامی و شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.

4 دکترای گروه شیلات، دانشکده علوم دامی و شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران

10.22051/jab.2023.41713.1512

چکیده

مقدمه: در بی‌مهرگان آب شیرین، زالوها یکی از گروه‌های اصلی موجودات زنده منابع آبی با توزیع جهانی است که تقریباً در همه نوع زیستگاه‌های آب شیرین یافت می‌شوند. تحقیق حاضر با هدف بررسی اثر گروه‌های آزمایشی خونی شامل اسب، گاو، گوسفند و مرغ روی پارامترهای تولید مثلی زالوی شرقی با سه تکرار در سال 1398 صورت گرفته است. روش‌ها: در هر تکرار تعداد 10 پیش مولد در یک دوره 5 ماهه پرورش داده شد و در طی این مدت یکبار تغذیه شدند. در پایان دوره، تعداد پیله‌ها و لاروهای خارج شده شمارش شده و خصوصیات طول، وزن و قطر پیله‌ها اندازه‌گیری شدند. نتایج و بحث: نتایج نشان داد که در پارامترهای رشد کمترین و بیشترین مقدار وزن نهایی مولدین پس از تغذیه، درصد افزایش وزن بدن و ضریب رشد ویژه به ترتیب در گروه آزمایشی خون مرغ (06/3، 5/461، 086/0) و خون اسب (22/5، 2/857، 113/0) بوده است (p<0.05). بررسی پارامترهای تولیدمثلی نشان داده که کمترین و بیشترین مقدار وزن، قطر و طول پیله‌ها به ترتیب در گروه آزمایشی خون مرغ (205/0، 6/0 و 6/0و خون اسب (785/0، 16/1 و 5/1) بوده است (p<0.05). بررسی میزان پروتئین کل نیز نشان داده که در خون گاو و اسب تقریباًًً در محدوده مقدار استاندارد قرار دارد. نتیجه‌گیری: براساس نتیجه این آزمایش و با توجه به پارامترهای مورد بررسی، خون اسب و گاو دارای بهترین عملکرد تولید مثلی بوده و خون گوسفند و مرغ به دلیل عدم تولد نوزاد از پیله‌های تولید شده، منابع غذایی مناسبی برای تکثیر و پرورش زالوی شرقی نمی‌باشند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of blood of different vertebrates on reproductive parameters of Hirudo orientalis

نویسندگان [English]

  • Hossein Rahmani 1
  • Driush Bozorgi 2
  • Sohrab Koohestan Eskandari 3
  • Khosrow JaniKhalili 4

1 Associate Professor,Sari University of Agricultural Sciences and NAssociate Professor, Department of Fisheries, Faculty of Animal Science and Fisheries, Sari University of Agricultural Sciences and Natural Resources, Sari, Iranatural Resources, Sari, Iran

2 Masters, Department of Fisheries, Faculty of Animal Science and Fisheries, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran

3 Instructor, Department of Fisheries, Faculty of Animal Science and Fisheries, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran

4 P.hd.Department of Fisheries, Faculty of Animal Science and Fisheries, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran

چکیده [English]

Introduction: Among freshwater invertebrates, leeches are one of the main groups of the world's most widely distributed water resources communities, found in almost all types of freshwater habitats. The aim of this study was to investigate the effect of different blood treatments on the reproduction parameters of Caspian leeches, has been done with three repetitions in the year 2019. Methods: In each replication, 10 progenitors were bred over a 5 month period, and once they were fed with blood treatments. At the end of the period, the number of cocoons and larvae were counted and the length, weight and diameter characteristics of the cocoons were measured. Results and discussion: The results showed that in the growth parameters, including the final weight of the generators, the percentage of body weight gain and the specific growth coefficient in chicken (3.06، 461.5، 0.086) and horse (5.22، 857.2، 0.113) treatments were the lowest and highest, respectively (p<0.05). The results of the parameters of reproduction including weight, diameter and length of cocoons in different treatments showed that in chicken (0.205، 0.6، 0.6) and horse (0.785،1.16، 1.5) treatments were the lowest and highest values, respectively (p<0.05). The amount of protein that can be absorbed has also been shown to be almost standard in cow and horse blood. Conclusion: Based on the results of this experiment and according to the studied parameters, horse and cow blood had the best performance and sheep and chicken treatments are not suitable for the reproduction of Caspian leeches.

کلیدواژه‌ها [English]

  • growth
  • reproduction
  • cocoon opening
  • Blood sources
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