Vol. 12, Special Issue 11 (2023)

Author(s):
Vishakha Uttam, Divya Patel, Pravin Purohit, Dinesh Kumar Sunwasiya, Abhishek Pathak, Mahantesh Shetkar and Sheityabati Sagolsem

Abstract:
Majority of the economic important traits are quantitative in nature, hence highly influenced by environmental variables. The objectives of our study were to estimate the effect of non-genetic factors on production and reproduction traits of Sahiwal and Haryana cattle. The cattle were raised and maintained at livestock farm complex (LFC), DUVASU, Mathura, (U.P), India. The data representing 479 records of both the breeds for Milk Yield (MY), Lactation Length (LL), Dry Period (DP), and Calving Interval (CI) were collected over a period of 17 years (1998-2015). The Least squares procedures of Harvey using season, period, stage of lactation and breeds as the fixed effects were utilized for the analysis. The season was classified into three major seasons, period was classified into six periods, five classes of lactation and two breeds effect were taken into consideration. The overall least squares mean for milk yield, calving interval, dry period and lactation length was found to be 1538.63±43.12 kg, 501.39±10.31 days, 237.4±12.89 days and 282.22±5.59 days, respectively. Effects of season of birth, period of birth, stages of lactation and breeds effect were highly significant over the studied production and reproduction traits. Hence, it is necessary to consider these factors when estimating genetic parameters and selection of animals in Sahiwal and Haryana cattle.