TY - JOUR ID - 78950 TI - Effects of replacing corn silage with barley silage on performance of high-producing ‎Holstein cows ‎ JO - Iranian Journal of animal Science JA - IJAS LA - en SN - 2008-4773 AU - Soltani, Abolfazl AU - Dehghan banadaky, Mehdi AU - Zali, Abolfazl AU - Fatehi, Farhang AD - Ph.D. Candidate, Department of Animal Science, College of Agriculture and ‎Natural Resources, University of Tehran, Karaj, Iran AD - Professor, Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran AD - Associate Professor, Department of Animal Science, College of Agriculture and Natural Resources, ‎University of Tehran, Karaj, Iran AD - Assistant Professor, Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran Y1 - 2020 PY - 2020 VL - 51 IS - 3 SP - 173 EP - 181 KW - Barley silage KW - corn silage KW - Forage KW - lactating cow‎ DO - 10.22059/ijas.2020.289965.653741 N2 - The objective of this study was to determine the effects of the replacement of corn silage with barley silage on high producing dairy cow performance. Thirty six high-producing (57.3±3.9kg/d) dairy cow in mid-lactation (93±7 DIM) were assigned to one of three experimental treatments including (1) no barley silage (BS) and 30% corn silage (CS), (2) 10% BS and 20% CS, and (3) 20% BS and 10 % CS in the TMR over two 24-day periods. The results showed that replacement of corn silage with barley silage linearly increased fat corrected milk (FCM; P=0.04), fat yield (P=0.04) and fat corrected milk production efficiency (P=0.01). There was also a tendency for linear increase in milk fat percentage (P=0.08), and linear decrease in milk lactose percentage (P=0.05). Ruminal acetate proportion and pH increased with increasing barley silage and propionate proportion decreased. Increasing barley silage resulted in linear increase in dry matter, organic matter and neutral detergent fiber digestibility (NDF; P<0.05). This study showed that replacing corn silage with barley silage could be considered as a successful strategy to improve performance and forage provisions of high-producing dairy cows. UR - https://ijas.ut.ac.ir/article_78950.html L1 - https://ijas.ut.ac.ir/article_78950_6f01a7b0904b0aa294b53732c4026adf.pdf ER -