Study on performance analysis of Holstein Fresien cattle under intensive management at government dairy farm, Pishin, Balochistan

The study was carried out to analyze the productive and reproductive performance ofHolstein Friesian cattle under intensive management at Government Dairy Farm, Pishin (Balochistan)exploring the ten years performance records from 1997-2007. Parameters were productive traits(birth weight, lactation length, lactation milk yield), reproductive traits (age at first conception, age atfirst calving, service period, dry period, calving interval) and effect of calving season on (milk yield,calving interval, birth weight, dry period on the Holstein Fresein cattle. Analysis of data revealedsignificant difference in all the productive traits (P<0.05). Maximum birth weight (33.05±0.61 kg) in6th and minimum (31.31±0.63 kg) in 1st lactation was recorded. The lactation length was highest(332.91±13.40 days) in cows at 3rd and lowest (298.13±16.33 d) in 1st lactation. Maximum lactationmilk yield (4102.45±119.34 liters) was in 3rd and minimum (3125.20±96.96 L) in 5th lactation. Theservice period was relatively higher (141.29±1.223 d) in 3rd lactation and lowest (122.21±2.034 d) in2nd lactation. Dry period was comparatively higher (91.44±2.31 d) in 3rd and lowest (81.95±2.181 d)in cows at the end of 1st lactation. Calving interval was significantly higher (421.29±5.413 d) in 3rdand lowest (399.36±6.013 d) in 1st lactation cows. The age at first conception on average was673.26±23.695 days, while the age at first calving was 977.779±33.891 days. The seasonal effect onbirth weight, calving interval and dry period was insignificant (P<0.05).Comparatively higher birthweight and calving interval was (32.00±0.541 kg and 415.20 ±6.451 d) respectively recorded inwinter. Dry period was slightly higher (90.12±3.311 d) in cows calved in summer and lowest(86.12±2.335 d) in winter. However, the calving season had effect on milk yield showed significantdifference (P<0.05), winter season calving produced higher milk yield (4131.65±225.49 L) andautumn calving produced lowest milk yield (3795.91±116.40 L). It is concluded that season andperiod of lactation is not significantly difference (P>0.05) in higher birth weight of calves, dry period,calving interval and milk yield of cows, respectively.