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Effect of Management Factors on the Productive and Reproductive Performance of Dairy Cows

Md. Akhtarul Islam
Department of Animal Husbandry and Veterinary Science, University of Rajshahi, Rajshahi-6205, Bangladesh

Md. Jalal Uddin Sarder
Department of Animal Husbandry and Veterinary Science, University of Rajshahi, Rajshahi-6205, Bangladesh

Syed Sarwar Jahan
Department of Animal Husbandry and Veterinary Science, University of Rajshahi, Rajshahi-6205, Bangladesh

Md. Reazul Islam
Department of Animal Husbandry and Veterinary Science, University of Rajshahi, Rajshahi-6205, Bangladesh

Md. Hemayatul Islam
Department of Animal Husbandry and Veterinary Science, University of Rajshahi, Rajshahi-6205, Bangladesh

Abstract/ Executive Summary:

Context: The productivity of dairy cows indicates 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 in 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), postpartum 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 prepared the result. Results: Housing systems of cows had a 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 the calf. Ventilation of cowshed had a significant (P<0.05) effect on postpartum 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 a significant (P<0.05) effect on age at puberty, age at first service, age at first calving, postpartum heat period, wastage days, milk yield per day, lactation length, milk yield per lactation, weaning period and calving interval. Conclusion: Finally the study recommended a sufficient amount of feed ‘concentrate + straw + green grass’, proper ventilated, semi-intensive housing system for excellent productive and reproductive performance.

Keywords: Dairy cows, Productive performance, Reproductive performance, Barind tract, Management

Location: Barind tract, Bangladesh

Start Date: 00-07-2018

End Date: 00-06-2020

Program Area: Animal Health and Management

Commodity: Farming System, Animal

Objectives:

To the management factors effect on productive and reproductive parameters of Dairy cows in Barind region, Bangladesh.

Methodology:

A cross-sectional study was conducted on six hundred and seventy-one (671) dairy cows from 335 farmers at Barind tract, Bangladesh from July 2008 to June 2010. Collected information in accordance with the objectives of the study was done on the prepared questionnaire. It has been considered to design in a simple manner to get accurate information from the dairy farmers. The researcher collected the information with the help of the farm register and from the dairy farm as well as visual observation. The experimental animal grouped on the basis of factors such as: Housing pattern: group 1: intensive housing system, group 2: semi-intensive housing, group 3: loose housing system; Ventilation were divided into proper, fair and poor; Feed quality were grouped as group 1: Concentrate+ straw + Green grass, group 2: Concentrate + straw, group 3: Concentrate + Green grass and group 4: Straw + Green grass. The productive and reproductive parameters of dairy cows (age at puberty (month), age at first service, age at first calving (month), service per conception (s/c), postpartum 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. Statistical analysis Data collected from dairy farm owners were compiled tabulated and analyzed in accordance with the objectives of the study. General Linear Model analysis was done to measure the association and strength of association between the potential influencing factors genotypes, age, parity, body condition, body weight, housing, ventilation, feeds and feeding etc. Duncan Multiple Range Test (DMRT) was used for test of significance of means with unequal subclass number (Martin and Willeberg 1988). The outcomes variable were age at puberty, age at first service, age at first calving, service per conception, postpartum heat period, gestation length, wastage days, dry period, days open, milk yield per day, lactation length, milk yield per lactation, dry period, calving interval and birth weight of the calf. Mean effects were systematically included in the model. Random effects were assumed independently and identically distributed. General Linear Model (GLM) test i.e. University (Post Hoc) for multiple comprises for observed mean was performed.

Source of Information: Bangladesh livestock journal. 2015. 1: 5-9 ISSN 2409-7691

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The intensive housing system was best considering most of the productive and reproductive parameters except age at puberty and age at first calving whereas the loose housing system showed poor performance. Proper ventilated, half building and Concrete floored housing ranked first considering all the productive and reproductive parameters at Barine tract in Bangladesh whereas Poor ventilated, Straw shed and Kacha floored housing showed the worst result. Sufficient amount and ‘concentrate + straw + green grass’ feed had the best result considering all the productive and reproductive parameters but Insufficient amount and ‘straw + green grass’ feed showed the poor result. From the research findings, the farmer should be achieved productive and reproductive performance for the profitable dairy industry more attentive in management like housing, ventilation and feed quantity on their reasons.

Knowledge Management: Journal