نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری گروه تغذیه دام و طیور، دانشکده علوم دامی دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران
2 گروه علوم دامی، دانشکده دامی و شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری
3 گروه علوم دامی دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران
چکیده
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Rising prices for common protein supplements and the limitation of protein sources and as a result the increase in production costs have created interest in cheaper protein sources. Unprocessed feather has a low digestibility of about 5.8%, so it needs to be processed as a source of protein. Therefore, according to the mentioned cases, the aim of the present study was to determine the effect of broiler row feather processing on dry matter and crude protein ruminal degradability. This research was carried out in a 2x2x2 factorial method based on a completely randomized design with 8 treatments and 5 replications. Ruminal degradability and effective degradability parameters of dry matter and crude protein were determined by rumen incubation at different incubation times inside the rumen of three Zel sheep with rumen fistula. The study of dry matter degradability data shows that there was a statistically significant difference between the rapidly degradable and the potentially degradable fraction, as well as the constant rate. The effective degradability was statistically significant at the rate of 2, 4 and 6 percent per hour in the experimental treatments. The results of the ruminal degradability of crude protein showed that there was a statistically significant difference between the rapidly degradable and potentially degradable fraction, as well as the constant rate of crude protein degradation. The effective degradability of crude protein was statistically significant at the passage rate of 2, 4 and 6 percent per hour in experimental treatments.
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