The association of birth type (single vs. double) and pregnancy type (single vs. double) with lactation performance and lactation curve was investigated in Holstein cows in Iran. Data of 243298 lactations on 138021 cows in 261 herds collected during January 2000 to December 2012 were used. The average twinning rate was 3.64% and ranged from 1.44% (primiparous) to 5.41% (multiparous). Factors as...

Motivated by the substantial development of special functions, we contribute to establish some rigorous results on general series identities with bounded sequences and hypergeometric functions different arguments, which are generally applicable in nature. For application purpose, apply our e.g. Trigonometric Elliptic integrals, Dilogarithmic function, Error Incomplete gamma many other functions.