Effect of period on service period and dry days length of Jersind crosses

The study was carried out in the Department of Animal Husbandry and Dairying, Dairy Farm, SHUATS, District – Prayagraj, Utter Pradesh. The objective of the study was to evaluate the effect of periods on service period and dry days length of Jersind crosses. All the data were collected from the history records of Jersind crosses. Four Cross Groups were selected for the study 1/2 J X 1/2 RS - (JRS1), 3/8 J X 5/8 RS - (JRS2), 1/4 J X 3/4 RS - (JRS3), and 1/8 J X 7/8 RS - (JRS4). It was observed that the mean first period, service period was 104.86 ± 3.8 days, 107.33 ± 8.25 days, 104.38 ± 3.12 days, and 88.50 ± 5.1 days in JRS1, JRS2, JRS3, and JRS4. The mean second period, service period was 110.00 ± 4.76 days, 84.75 ± 4.2 days, 109.30 ± 3.5 days, and 85.20 ± 7.55 days in JRS1, JRS2, JRS3, and JRS4. The mean third period, service period was 107.00 ± 6.99 days, 113.33 ± 2.88 days, 84.57 ± 5.79 days, and 116.83 ± 4.57 days in JRS1, JRS2, JRS3, and JRS4. The mean first period, dry days length was observed 62.14 ± 1.13 days, 60.33 ± 0.98 days, 65.88 ± 1.72 days, and 62.00 ± 1.4 days in JRS1, JRS2, JRS3, and JRS4. The mean second period, the dry days' length was 59.60 ± 1.88 days, 60.50 ± 2.84 days, 62.20 ± 1.56 days, and 63.60 ± 1.08 days in JRS1, JRS2, JRS3, and JRS4. The mean third period, dry days length was 61.60 ± 1.40 days, 62.00 ± 0.94 days, 63.14 ± 2.86 days, and 65.50 ± 2.12 days in JRS1, JRS2, JRS3, and JRS4. In reproductive traits period indicated a significant effect on the second and third period service period, whereas indicated a non-significant on first, second, and third period dry days length of Jersind crosses (JRS1, JRS2, JRS3, and JRS4).