کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5795852 1554381 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of substitution of soybean meal for inactive dry yeast on diet digestibility, lamb's growth and meat quality
ترجمه فارسی عنوان
تأثیر جایگزینی وعده های غذایی سویا برای مخمر خشک غیر فعال بر میزان هضم غذا، رشد بره و کیفیت گوشت
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی

The present study was divided into two main experiments: (i) experiment 1 included the evaluation of apparent nutrient digestibility, pH and ruminal ammonia concentration, and (ii) experiment 2 investigated the nutrient intake, growth performance and meat quality of lambs fed diets containing replacement levels (0, 33, 67 and 100% in dry matter basis) of soybean meal by inactive dry yeast (IDY). experiment 1 used four rumen-fistulated entire male Santa Ines lambs distributed in a 4 × 4 Latin square. experiment 2 used 36 entire male Santa Ines lambs in a randomized block design with four treatments and nine replicates. A quadratic effect (P < 0.05) of IDY was observed on the apparent digestibility of dry matter, organic matter, crude protein, ether extract and neutral detergent fiber corrected for ash and protein. A quadratic effect of the diet and sampling time was observed (P < 0.05) on the concentration of ammonia nitrogen in the rumen. The sampling time (P < 0.05) affected the ruminal pH with the data adjusted to a quadratic model. Growth performance was not affected by IDY in the diets. The subcutaneous fat thickness decreased linearly (P < 0.05) with increased levels of IDY in the diet. The meat crude protein and ash concentration increased linearly (P < 0.05), and the intramuscular fat concentration decreased linearly (P < 0.05) with increased levels of IDY in the diet. IDY can replace up to 100% of the soybean meal in lambs diets, with the use of this by-product depending on economic factors and market availability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Small Ruminant Research - Volume 111, Issues 1–3, April 2013, Pages 56-62
نویسندگان
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