TY - JOUR T1 - The Effect of Pistachio by-Product on Nutrient Apparent Digestibility, Rumination Activity and Performance of Holstein Dairy Cows in Early Lactation TT - اثر مصرف فراورده فرعی پسته بر قابلیت هضم ظاهری مواد مغذی، فعالیت نشخوار و عملکرد گاوهای هلشتاین در اوایل دوره شیردهی JF - JSTNAR JO - JSTNAR VL - 13 IS - 47 UR - http://jstnar.iut.ac.ir/article-1-1045-en.html Y1 - 2009 SP - 167 EP - 179 KW - Pistachio by-product KW - Economically corrected milk KW - Digestibility KW - Rumination. N2 - Eight multiparous Holstein dairy cows with 634±44 BW, 57±6 DIM, and 46.7±3.1 kg daily milk yield were assigned to a duplicated 4×4 Latin square design for 21-day periods (adaptation, 14d sample collection, 7d). The treatment diets were: 1) no pistachio by-product (control), 2) 5% of pistachio by-product, 3) 10% pistachio by-product and 4) 15% pistachio by-product. Corn silage in control diet was replaced with pistachio by-product. The blood metabolites (2h after feeding), DMI, daily milk yield and milk compositions were not affected by the treatment diets. The economically corrected milk (ECM) and fat corrected milk (FCM) were decreased linearly by increasing pistachio by-product in the diet (P M3 ER -