Growth Performance of Blackhead Pleven Lambs during the Suckling Period
محورهای موضوعی : Camel
م. سیم اٌنوو
1
,
د. پاموگووا
2
1 - Agricultural Institute, Stara Zagora, Bulgaria
2 - Trakia University, Faculty of Agriculture, Stara Zagora, Bulgaria
کلید واژه: live weight, lambs, chest perimeter,
چکیده مقاله :
The aim of the present study was to analyze the live weight, body length, and chest perimeter in Blackhead Pleven lambs at an early age with a view to their future use as prognostic indicators of growth performance. The study was conducted with 46 lambs. It found out that at birth and weaning the singletons had higher live weight and higher average daily weight gain in comparison with the twins (P<0.01). Body length and chest perimeter at birth were higher in the singletons lambs (P<0.01). The type of birth influenced significantly (P<0.01) on the live weight (η2=26.85%), live weight (η2=21.39%) and the chest perimeter (η2=27.08%) of the lambs at birth. At 26 days of age i.e. at weaning, only the live weight was influenced by the birth type (η2=27.53%, P<0.01). The chest perimeter of lambs at weaning was not influenced by the body length at birth and at weaning. There was a moderate to strong phenotypic correlation among the other studied parameters.
هدف از این مطالعه، آنالیز صفات وزن زنده، طول بدن و محیط سینه در برههای پِلِوِن سر سیاه در مرحله ابتدایی زندگی با دیدگاه استفاده بعدی آنها به عنوان شاخصهای پیشبینی کننده عملکرد رشد بوده است. این مطالعه با استفاده از 46 بره انجام شده است. نتایج نشان میدهد که برههای تک قلو در تولد و شیرگیری دارای وزن زنده و میانگین افزایش وزن روزانه بالاتر در مقایسه با دو قلوها بودند (01/0>P). طول بدن و محیط سینه در زمان تولد، در برههای تک قلو بیشتر بوده است (01/0>P). تیپ تولد بر وزن زنده (درصد 85/26=η2)، وزن زنده (39/21=η2) و محیط سینه (درصد 08/27=η2) برهها در هنگام تولد تأثیر معنیداری دارد (01/0>P). در 26 روزگی یعنی در هنگام از شیرگیری، تیپ تولد تنها بر وزن زنده (درصد 53/27=η2) تأثیر معنیدار داشته است (01/0>P). محیط سینه برهها در زمان از شیرگیری تحت تأثیر طول بدن در هنگام تولد و از شیرگیری قرار نمیگرفت. همبستگی فنوتیپی متوسط تا زیاد بین سایر پارامترهای مطالعه شده وجود داشته است.
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