نوع مقاله : مقاله پژوهشی
نویسندگان
1 موسسه تحقیقات علوم دامی کشور
2 دانشگاه زابل
3 استاد موسسه تحقیقات علوم دامی
4 دانشگاه علوم کشاورزی و منابع طبیعی ساری- ریاست دانشکده علوم دامی و شیلات
5 عضو هیئت علمی دانشگاه زابل
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Backgrant and objective: Total mixed ration silage (TMRS) is a new technology that has been considered by animal nutritionist in recent years. The TMRS is balance feed prepared from fodder components (mainly silage), concentrate and mineral-vitamin supplements that provides the nutritional requirements of livestocks due to the presence of these components, its use has been expanded in livestock breeding units, where the fermentation process improved the nutrients digastibility. This study, with the aim of preparing complete feed silage based on triticale and wheat plants and determining their nutritional value (optional feed consumption, digestibility and rumen parameters) in comparison to daily complete feed with the same food ingredients (daily mixing the desired fodder silage with dry ration) was done.
Mateials and methods: Four experimental diets were prepared including: 1) diet containing wheat silage, 2) complete feed silage based on wheat, 3) diet containing triticale silage, 4) complete feed silage based on triticale. The digestibility and voluntary consumption of the experimental rations were determined by the in vivo method on adult male sheep of Zel breed. The amount of feed consumed, the remaining feed, total feces and daily urine for each sheep were collected separately. Stool samples were dried in an oven at a temperature of 60 degrees Celsius and then the percentage of dry matter was calculated. In the dried samples of feces and feed, the amount of ash and insoluble fibers in neutral detergent was measured
Results: The amount of dry matter in terticale silage was the highest (47.30%) and the diets containing silage, wheat silage and complete wheat silage were the lowest (46.50%), but there was no significant difference between the treatments (p>0.05). The average digestibility of dry matter and insoluble fibers in neutral detergent fiber in the silage treatment of terticale complete feed was the highest compared to other treatments (p < 0.05). The treatment 2 had the highest, but the treatment 1 had the lowest digestible nutrients intake (p<0.05), whereas no significantly differences were obtained among the other treatments. Metabolizable energy in whole wheat silage treatment had the highest (11.42 megacalories per kilogram of dry matter) compared to other three treatments (p < 0.05). The production of rumen microbial protein was highest when feeding on whole grain wheat silage and the lowest when feeding on ration containing triticale silage (p < 0.05).
Conclution: In general, ensiling the food ration in the form of complete feed based on wheat fodder improved its nutritional value, but no such improvement was achieved in the case of triticale fodder.
کلیدواژهها [English]
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