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20162
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Subject: Livestock Production and Management × Author: NAGARJUNA REDDY, A × End date: 2016 × Start date: 2010 × Type: Thesis ×
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    ThesisItemOpen Access
    INFLUENCE OF PREPARTUM DRY PERIOD ON TRANSITIONAL STRESS, MILK PRODUCTION AND REPRODUCTION IN MURRAH BUFFALOES
    (SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI - 517 502. (A.P.) INDIA, 2016-12) NAGARJUNA REDDY, A; SUDHAKAR, K(MAJOR); VENKATA SESHAIAH, Ch; SRINIVAS KUMAR, D
    ABSTRACT : A study was carried out to determine the effect of prepartum dry period (DP) on transitional stress, milk production and reproduction in Murrah buffaloes. Forty eight multiparous Murrah buffaloes were randomly divided into 3 groups of 16 buffaloes each based on the length of DP i.e. buffaloes with >60 days (group-1), 46-60 days (group-2) and 30-45 days (group-3). The changes in body weight, body condition score (BCS), serum glucose (mg/dl) and serum NEFA (μmol/lt) levels from drying to 90 days postpartum and milk and milk constituents yield and postpartum service period from calving to 90 days postpartum were measured with an object to find out the duration of DP required for optimum postpartum production and reproduction performance in Murrah buffaloes. The body weights (kg) from drying to calving were significantly (P<0.05) increased and from calving to 90 days postpartum were significantly (P<0.05) decreased in group 1 buffaloes, while the difference was not significant between 2 and 3 group buffaloes. The BCS followed similar pattern of body weight changes in all the groups of buffaloes. The serum glucose (mg/dl) levels from the time of drying to 60 days postpartum were significantly (P<0.05) decreased in group 1 than group 2 and 3 buffaloes, while the difference was not significant between 2 and 3 groups. On the other hand, the serum NEFA (μmol/lt) levels have increased significantly in group 1 than group 2 and 3 buffaloes, while the difference was not significant between 2 and 3 groups. The 6% FCM yield (kg) up to 90 days of lactation was highest in group 3 buffaloes followed by group 2 and 1 buffaloes and the difference among the groups were significantly(P<0.05) different. The milk fat and total solids per cent among three groups of buffaloes were not significantly different, while SNF per cent from calving to 30 days of lactation was significantly (P<0.05) less in group 1 buffaloes than group 2 and 3 buffaloes, while the difference was not significant among 2 and 3 groups. The SNF per cent was highest in group 3 buffaloes from 31 to 90 days postpartum followed by group 2 and 1 buffaloes and the difference among the groups was significantly (P<0.05) different. The service period (days) was highest in group 1 buffaloes followed by group 2 and 3 buffaloes and the difference among the groups was significantly (P<0.05) different. The present research concluded that a dry period of 30 - 45 d is sufficient in high yielding Murrah buffaloes for optimum production and reproduction and to avoid adverse effects on transition associated problems.
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    ThesisItemOpen Access
    INFLUENCE OF PREPARTUM DRY PERIOD ON TRANSITIONAL STRESS, MILK PRODUCTION AND REPRODUCTION IN MURRAH BUFFALOES
    (SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI – 517 502. (A.P) INDIA, 2016-12) NAGARJUNA REDDY, A; K. SUDHAKAR, K (Major); VENKATA SESHAIAH, Ch; SRINIVAS KUMAR, D
    ABSTRACT : A study was carried out to determine the effect of prepartum dry period (DP) on transitional stress, milk production and reproduction in Murrah buffaloes. Forty eight multiparous Murrah buffaloes were randomly divided into 3 groups of 16 buffaloes each based on the length of DP i.e. buffaloes with >60 days (group-1), 46-60 days (group-2) and 30-45 days (group-3). The changes in body weight, body condition score (BCS), serum glucose (mg/dl) and serum NEFA (μmol/lt) levels from drying to 90 days postpartum and milk and milk constituents yield and postpartum service period from calving to 90 days postpartum were measured with an object to find out the duration of DP required for optimum postpartum production and reproduction performance in Murrah buffaloes. The body weights (kg) from drying to calving were significantly (P<0.05) increased and from calving to 90 days postpartum were significantly (P<0.05) decreased in group 1 buffaloes, while the difference was not significant between 2 and 3 group buffaloes. The BCS followed similar pattern of body weight changes in all the groups of buffaloes. The serum glucose (mg/dl) levels from the time of drying to 60 days postpartum were significantly (P<0.05) decreased in group 1 than group 2 and 3 buffaloes, while the difference was not significant between 2 and 3 groups. On the other hand, the serum NEFA (μmol/lt) levels have increased significantly in group 1 than group 2 and 3 buffaloes, while the difference was not significant between 2 and 3 groups. The 6% FCM yield (kg) up to 90 days of lactation was highest in group 3 buffaloes followed by group 2 and 1 buffaloes and the difference among the groups were significantly(P<0.05) different. The milk fat and total solids per cent among three groups of buffaloes were not significantly different, while SNF per cent from calving to 30 days of lactation was significantly (P<0.05) less in group 1 buffaloes than group 2 and 3 buffaloes, while the difference was not significant among 2 and 3 groups. The SNF per cent was highest in group 3 buffaloes from 31 to 90 days postpartum followed by group 2 and 1 buffaloes and the difference among the groups was significantly (P<0.05) different. The service period (days) was highest in group 1 buffaloes followed by group 2 and 3 buffaloes and the difference among the groups was significantly (P<0.05) different. The present research concluded that a dry period of 30 - 45 d is sufficient in high yielding Murrah buffaloes for optimum production and reproduction and to avoid adverse effects on transition associated problems.