Effect of Parity, Period and Season of Calving on Production and Reproduction Traits on Deoni Cattle

Abstract

| A total of 710 lactation records of 274 Deoni cattle, maintained at ICAR-National Dairy Research Institute, Southern Campus, Bangalore were used to study the effect of non-genetic factors on production and reproduction traits. Lactation records of Deoni cows were classified into five parity (1, 2, 3, 4 and ≥5), six period of two years interval (2002 to 2013) and three seasons i.e., winter (November -February), summer (March -June) and rainy ( July -October). Statistical analysis was performed by using SPSS 16.0 software for Windows. On analysis, overall mean lactation milk yield, lactation length, service period and calving interval were estimated as 819.98 ± 16.5 kg, 195.23 ± 2.62, 158.78 ± 3.5 and 445.97 ± 3.67 days, respectively. Effect of parity and period on lactation milk yield and length was found to be highly significant (P<0.01). Significant influence (P<0.01) of period was observed on service period and calving interval of the cattle. Lactation milk yield of Deoni cattle was significantly influenced (P<0.05) by season of calving. Effect of season on lactation length, service period and calving interval was found to be non-significant, however on lactation milk yield it was found to be significant (P<0.05). Thus, present study concludes the significant influence of parity, period and season of calving on lactation milk yield that would be helpful for estimation of genetic parameters and further improvement of the breed.

Characterization of Some Productive and Reproductive Traits of Syrian Shami and Holstein Cows Under Syrian Conditions

“…The interaction between breed and parity had a significant effect on the lactation period only (Table 1). These results in the current study agree with those of Toure et al (2019) in Mali, Basak and Das (2018) in India and Abera (2016) in Ethiopia.…”

“…Similar results were also reported by Ayeneshet et al (2018) in local cows in Ethiopia and Sanad and Hassane (2019) in crossbred Friesian cattle in Egypt and they explained that the difference could be due to the number of cows used and the emergence of new generations during the period of calving. Meanwhile, no significant effect of year of calving on CI was reported by Basak and Das (2018) of Deoni cattle in India.…”

“…Similar results were observed by Kumar et al (2003) in Ongole cattle. Conversely, Basak and Das (2018) indicated the shortest LP was in the first parity compared to other parities on Deoni cows in India. Hermiz and Hadad (2020) found that LP was reduced significantly from 306 days in the first parity to 290 days in the fourth parity in Iraq.…”

Productive and Reproductive Performance of Syrian Shami Cows

“…Effect of year of calving on TMY: Table (3) showed the effect of year of calving was significant on TMY. Similar agreement was observed by Basak and Das (2018) and Almasri (2010). Otherwise, Shafig et al (1992) reported the effect of year of calving on TMY was nonsignificant of crossbred cows (Friesian × Sahiwal) in Pakistan.…”

“…Results showed increasing in the TMY with the progress of the parity and up to the fourth parity 1650 kg, then decreased after the Fourth parity (table 5), this could be increase capacity of feed intake compared to the cows of the first parity, and udder glands reached full development, while decreased TMY after the Fourth parity due to increased mortality of secret cells with age. as was also reported by others Al Masri (2010) and Basak and Das (2018). On contrary, Bahashwan (2020) concluded the effect of parity on TMY was nonsignificant.…”