کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2440413 | 1108117 | 2008 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nutritive Value of Timothy Fertilized with Chloride or Chloride-Containing Liquid Swine Manure
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
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چکیده انگلیسی
Chloride fertilization of timothy (Phleum pratense L.) decreases forage dietary cation-anion difference to an acceptable value [(<250Â mmolc/kg of dry matter (DM)] for dry dairy cows (Bos taurus). However, high Cl concentrations in forages as a result of fertilization might affect nutritive value. Two experiments were used to evaluate the effects of chloride fertilization on timothy spring growth and summer regrowth by determining concentrations of crude protein and neutral detergent fiber (NDF), in vitro true digestibility of DM (IVTD), and in vitro digestibility of NDF (dNDF). In an inorganic fertilization experiment, forages grown at 4 locations were fertilized with CaCl2 (0, 80, 160, and 240Â kg of Cl/ha per yr) or NH4Cl (160Â kg of Cl/ha per yr) in combination with 2Â N application rates (70 and 140Â kg of N/ha per yr). The increase in Cl fertilization rate affected forage NDF concentration (+1.4%), IVTD (â0.8%), and dNDF (â1.2%) only at the highest rate of N fertilization, but this effect was not of biological importance. Crude protein concentration was not affected by Cl fertilization. Both Cl fertilizer types had a similar impact on forage nutritive value. In an organic fertilization experiment, forages grown at 2 locations received 1 of 7 experimental treatments [unfertilized control, inorganic fertilizer, raw liquid swine manure (LSM), and liquid fractions of 4 pretreated LSM types (decanted, filtered, anaerobically digested, and flocculated)] that provided, respectively, 0, 60, 41, 44, 44, 36, and 101Â kg of Cl/ha per yr. The last 6 fertilizer treatments also provided 140Â kg of N/ha per yr. The IVTD, dNDF, and concentration of NDF in timothy forage were not affected by the Cl content of the different LSM types. Nitrogen fertilization increased concentration of forage NDF and decreased IVTD and dNDF, but this effect was not biologically important. In both experiments, soil types and harvests had a negligible effect on forage nutritive value. Organic or inorganic Cl fertilizers applied to decrease timothy dietary cation-anion difference have little or no effect on forage nutritive value.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dairy Science - Volume 91, Issue 2, February 2008, Pages 713-721
Journal: Journal of Dairy Science - Volume 91, Issue 2, February 2008, Pages 713-721
نویسندگان
S. Pelletier, G.F. Tremblay, G. Bélanger, M.H. Chantigny, P. Seguin, R. Drapeau, G. Allard,