Journal details
Effect of management factors on the productive and reproductive performance of dairy cows
Published Date: 30 Dec 2015
Keywords: Dairy cows, productive and reproductive performance, Barind tract and management.
Md. Akhtarul Islam*, Md. Jalal Uddin Sarder, Syed Sarwar Jahan, Md. Reazul Islam and Md. Hemayatul Islam
Department of Animal Husbandry and Veterinary Science, University of Rajshahi,Rajshahi-6205, Bangladesh
Abastract:
Context: Productivity of dairy cows indicate the status of management.
Objectives: The present study was undertaken to evaluate the effect of management on the productive and reproductive performance of dairy cows.
Materials and methods: A cross sectional study was conducted on six hundred and seventy one (671) dairy cows from 335 farmers at Barind tract at Bangladesh from July 2008 to June 2010. The existing record reserved following the structured, closed questionnaire. The influencing factors housing, ventilation, feeds and feeding on productive and reproductive parameters of dairy cows. The overall mean values of productive and reproductive status including age at puberty (month), age at first service, age at first calving (month), service per conception (s/c), post partum heat period (days), days open (days), wastage days (days), gestation length (days), milk yield per day (liter), lactation length (days), milk yield per lactation (liter), weaning period (days), dry period (days), calving interval (days) and birth weight of calves (kg) were studied. The secondary data were complied tabulated and SPSS program to prepared result.
Results: Housing systems of cows had significant (P<0.05) effect on age at puberty, age at first service, age at first calving, service per conception, milk yield per day, milk yield per lactation, dry period, and birth weight of calf. Ventilation of cow shed had significant (P<0.05) effect on post partum heat period, days open, milk yield per day, milk yield per lactation, dry period, calving interval and birth weight of calf. Feeds and feeding had significant (P<0.05) effect on age at puberty, age at first service, age at first calving, post partum heat period, wastage days, milk yield per day, lactation length, milk yield per lactation, weaning period and calving interval.
Conclusion: Finally the study recommended that sufficient amount of feed ‘concentrate + straw + green grass’, proper ventilated, semi- intensive housing system for the excellent productive and reproductive performance.