کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
8504301 1554333 2018 6 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of dietary feeding different levels of mixed potato-wheat straw silage on the diet digestibility and the performance of growing lambs
ترجمه فارسی عنوان
تأثیر سطوح مختلف تغذیه رژیم غذایی سیب زمینی نیترات سیب زمینی گندم بر میزان هضم رژیم غذایی و عملکرد بره های روغنی
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موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
The effect of dietary substitution of different levels (0, 100, 200 or 300 g/kg dry matter [DM]) of mixed potato-wheat straw silage (PWSS) for alfalfa and concentrate on nutrient digestibility, feed intake, growth performance, microbial nitrogen supply (MNS) and blood parameters of fattening lambs (24 lambs, 25 ± 1.2 kg initial body weight) was assessed. The potato-wheat straw (57:43 ratio on a DM basis) mixture was ensiled for 90 days before use. Four isonitrogenous and isocaloric diets were randomly assigned to 4 groups of lambs (n = 6/group) in a completely randomized design for a 75-day period (15 days for adaptation and 60 days for data collection). The animals were fed diets as a total mixed ration to ensure 10% orts. Diet digestibility, DM and nutrient intake, growth rate, MNS and blood metabolites were determined. There was a linear response (P < 0.001) to increasing dietary level of PWSS for crude protein (CP) digestibility, with no effect (P > 0.05) on the digestibility coefficients of DM, OM, ash-free neutral detergent fiber and EE. The daily intakes of DM, organic matter (OM) and CP were not affected (P > 0.05) by the dietary inclusion of PWSS. The average daily weight gain was not influenced (Linear, P = 0.22) with increasing levels of PWSS offered. Consequently, feed efficiency increased linearly (P = 0.048) with increasing levels of PWSS in the diet as did urinary excretions of purine derivatives and MNS (Linear, P = 0.01). PWSS inclusion had no effect (P > 0.05) on blood metabolites in the experimental animals. It is concluded that PWSS can be fed to fattening Mehraban lambs as a replacement (300 g/kg diet DM) for an alfalfa and concentrate diet without adverse effects on animal performance. This silage is a safe feedstuff to use in the diet of sheep.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Small Ruminant Research - Volume 159, February 2018, Pages 84-89
نویسندگان
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