Effect of functional traits on subsequent reproduction performance of Murrah buffaloes in India

Abstract

A study was conducted on calving records of Murrah buffaloes to study the influence of various functional traits on subsequent reproductive performance. The effects of calving abnormalities, uterine health problems, female fertility problems and udder health problem on calving to first service (CFS), service period (SP), dry period (DP) and calving interval (CI) were studied by the leastsquares method using the SAS package. The increase in CFS, SP, DP and CI was 27.07%, 18.71%, 96.74% and 6.70%, respectively. Subsequently, the average milk yield per day of calving interval was found to be reduced (from 4.91 to 2.10 kg/day) in these animals in comparison with the normal calvers. A highly significant increase in average CFS, SP, DP and CI was found among animals susceptible to metritis (16.93%, 73.88%, 53.92% and 20.04%, respectively). The decrease in average milk yield per day of calving interval (MY/CI) was 18.55% in comparison with the animals not affected by metritis. The average MY/CI was observed to be 16.47% lower in the anoestrusaffected animals in comparison with normal animals. The increase in average SP, DP and CI associated with repeat breeding cases was 162.63%, 87.58% and 50.15%, respectively. The increase in average DP and CI due to incidence of mastitis was 10.48% and 4.26%, respectively. The increase in average dry period associated with the incidence of mastitis during early stage of lactation (1-60 days) was 13.63%. The incidence of mastitis during early stage of lactation significantly reduced the average MY/CI by 5.50 and 14.20%, respectively. ARTICLE HISTORY

Study on the post-partum disorders and their relationship with the reproductive performance in Iraqi cow-buffaloes

“…This study found that retained fetal membrane regarded as the main factor which affects the reproductive performance within other uterine disorders. This study agreed with the previous studies Manoja et al (9) they reported that retained placenta had significant impact on reproductive performance of Murrah buffaloes. The obvious higher productive losses associated with retained placenta could be a considerable risk cause for toxic puerperal metritis in Iraqi cow-buffaloes (15).…”

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“…Buffalo is an important dairy animal having unique qualities like efficient converter of low‐grade coarse feedstuff, ability to withstand adverse weather conditions, and resistance to many diseases of cattle (Manoj et al, ). Buffaloes are the second largest source of milk supply in the world and play an important role in the rural economy through their contribution to food, draught power and employment generation (Nanda & Nakao, ).…”

Threshold analysis of indicator traits for involuntary disposal in Holstein Friesian crossbred cattle

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