Volume 26 (2024)
Volume 25 (2023)
Volume 24 (2022)
Volume 23 (2021)
Volume 22 (2020)
Volume 21 (2019)
Volume 20 (2018)
Volume 19 (2017)
Volume 18 (2016)
Volume 17 (2015)
Volume 16 (2014)
Volume 15 (2014)
Volume 14 (2012)
Volume 13 (2011)
Volume 12 (2010)
Comparative evaluation of some mathematical fuctions in describing the lactation curve of Iranian dairy cattle

Maryam Arianfar; Mohammad Rokouei; Gholamreza Dashab; Hadi Faraji- Arough

Volume 20, Issue 3 , November 2018, , Pages 351-363

Abstract
  The objective of this study was to compare some nonlinear functions (Wood, Dhanoa, Wilmink, Ali-Schaeffer, Cappio Borlino, Cobby – Le­ Du, Dijkstra, Rook, Gous and Nelder) to describe the milk production curve of Iranian Holstein cattle. A dataset consisted of 6079976, 4879486 and 3312416 test-day ...  Read More

Genetic parameters and trend of production and reproduction traits in Iranian Holstein cattle

Zohreh Shirmoradi; Abdol Reza Salehi; Rostam Pahlavan; Mohamad Reza Mollasalehi

Volume 12, Issue 2 , October 2010, , Pages 21-28

Abstract
  In this study, the genetic and phenotypic trend of milk and fat production traits were estimated form 94121 cows’ first lactation records and that for age at first calving and calving interval traits were estimated from 41900 cows’ reproduction records. Data related to Iranian Holstein dairy ...  Read More