کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8492007 | 1552413 | 2012 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of dietary addition of wormwood (Artemisia montana Pampan) silage on growth performance, carcass characteristics, and muscle fatty acid profiles of beef cattle
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کلمات کلیدی
ADFLWSSFAMUFAHWSCLAaNDFADGDMIMWSconjugated linoleic acid - اسید لینولئیک کونژوگهFatty acid - اسید چربPolyunsaturated fatty acids - اسید چرب اشباع نشدهPUFA - اسید چرب چند غیراشباعsaturated fatty acids - اسیدهای چرب اشباع شدهmonounsaturated fatty acids - اسیدهای چرب غیر اشباعacid detergent fiber - الیاف پاک کننده اسیدether extract - عصاره اترNeutral detergent fiber assayed with a heat stable amylase and expressed inclusive of residual ash - فیبر شوینده خنثی با آمیلاز پایدار حرارت داده شده و بیانگر شامل خاکستر باقی مانده استdry matter - ماده خشکaverage daily gain - متوسط افزایش روزانهdry matter intake - مصرف ماده خشکbody weight - وزن بدنcrude protein - پروتئین خام
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study aimed to determine the effect of substituting rice straw with wormwood (Artemisia montana) silage on growth performance, carcass quality, and muscle fatty acid profiles of Hanwoo steers during the fattening period. Twenty steers (326 ± 23 kg body weight) were blocked by body weight and assigned randomly to one of four treatments in which 0, 50, 100 or 150 g/kg of rice straw (dry matter (DM) basis) was substituted with wormwood silage. Concentrate feed mixtures containing crude protein and metabolizable energy values of 120 g/kg DM and 6.5 MJ/kg DM and 122 g/kg DM and 9.6 MJ/kg DM were used for the early and late fattening periods, respectively. The forages and concentrate feed mixtures were fed separately for 390 d and the forage to concentrate feed mixture ratio was changed from 7:3 (DM basis) initially to 1:9 at the end by increasing the concentrate proportion monthly. Wormwood silage had greater crude protein and ether extract concentrations, but lesser neutral detergent fiber concentration than rice straw. The C18:2 n-6 and C18:3 n-3 concentrations in rice straw were lesser than in wormwood silage (15 vs. 29 g/100 g fatty acid; 3 vs. 21 g/100 g fatty acid, respectively). Increasing the level of addition of wormwood silage linearly (P<0.001) increased concentrate and total DM intake, and quadratically increased final body weight (P<0.01) and average daily gain (P<0.001), consequently, feed conversion ratio (DMI/BW gain) decreased (P<0.01) concomitantly. Backfat thickness decreased quadratically (P<0.01) as dietary wormwood silage addition increased, whereas carcass weight (P=0.002), longissimus muscle area (P=0.002), and marbling score (P=0.014) increased. Meat color was not affected by treatment. Concentrations of C18:0 (P<0.05), C18:1 n-9 (P<0.05) and monounsaturated fatty acid in the longissimus muscle decreased linearly (P<0.01) with increasing wormwood silage addition but cis-9 trans-11 conjugated liloneic acid (P<0.001), C18:3 n-3 (P<0.01), C22:0 (P<0.001), C24:1 n-9 (P<0.001) and polyunsaturated fatty acid (P<0.001) concentrations increased. Replacing rice straw with up to 100 g/kg of wormwood silage improved the growth performance, carcass quality, and muscle fatty acid profile of Hanwoo steers during the fattening period.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Feed Science and Technology - Volume 177, Issues 1â2, 11 October 2012, Pages 15-22
Journal: Animal Feed Science and Technology - Volume 177, Issues 1â2, 11 October 2012, Pages 15-22
نویسندگان
S.C. Kim, A.T. Adesogan, J.H. Shin,