Effect of Season Year and Parity on Production Traits of Cross-Breds
Journal Title: International Journal of Agricultural Sciences and Veterinary Medicine - Year 2015, Vol 5, Issue 2
Abstract
Present study was under taken on production traits from 458 normal lactation records of first three lactation from 158 cows; which are progenies of 30 sire maintained at dairy of Sadguru Seva Sangh trust, Jankikund, Chitrakoot, Satna (MP) The Cows have complete their three lactation records between 1977 to 1996. The performance records envisaged LMY, LP, DP, PY and MPEP. In order to account for the genetic (genetic group and parity) and non-genetic factors (year and season of calving) affecting the performance traits, least-square were carried out. The overall least-square means of LMY, LP, DP, PY, and MPEP were observed as 2746.10 ± 27.29 kg, 331.52 ± 2.49 days, 80.80 ± 1.21 days, 13.47 ± 0.10 kg and 8.33 ± 0.07 kg respectively. Season, year and parity had significant effect on lactation period, peak yield and milk production efficiency per day of lactation period. During the early lactations, production and growth process lead to drain of energy reserve, so maximum yield is expected when grown fully at about 3 rd to 4 th lactation. Thus, from above results it may safely concluded that for getting maximum milk (peak yield), cross-breds managed so that they must be calved in winter season and reared by farmer’s up to 3 rd to 4 th lactation. The study also showed the adaptability and producing ability of cross- breds under Chitrakoot area.
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