Open AccessReproductive Performance of Dairy Cows in Relation to Genotype, Age, Parity, Body Weight and Body Condition Score at Rajshahi District of Bangladesh
Author(s) -
Rashida Khaton
Publication year - 2020
Publication title -
research in agriculture, livestock and fisheries
Language(s) - English
Resource type - Journals
eISSN - 2409-9325
pISSN - 2409-0603
DOI - 10.3329/ralf.v7i3.51368
Subject(s) - zoology , ice calving , breed , parity (physics) , body weight , biology , medicine , lactation , pregnancy , genetics , physics , particle physics
The present study was carried out from selected areas at Rajshahi district to evaluate the reproductive performance of dairy cows in relation to breed/genotype, age, parity, body weight and body condition. A total of 500 cows selected and data were collected directly from the dairy farms owner by using pre-tested questionnaires during the period from September 2013 to December 2014. The average reproductive performance (RP) were recorded as age at puberty (AP) 26.42±0.22 m, age at first calving (AFC) 35.48±0.22 m, post-partum heat period (PPHP) 121.85±3.48 days, service per conception (S/C) 1.93±0.04, days open (DO) 136.80±3.57 days and calving interval (CI) 401.04±3.94 days. Genotype had significant effect (P 0.05). Middle age groups of cows had shown better RP than others groups. Parities of cows had significant effect (P 300 kg BW groups. Body condition score had significant effect (P<0.05) on all RP. Good body condition score (BCS) had excellent RP.
Res. Agric., Livest. Fish.7(3): 481-495, December 2020