LONGEVITY AND LIFETIME PERFORMANCE OF PHULE TRIVENI CROSSBRED CATTLE
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Date
2008
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Mahatma Phule Krishi Vidyapeeth, Rahuri.
Abstract
Four hundred and ten records of Phule Triveni cattle for a period of 31 years were collected for lifetime and longevity traits from RCDP (Research Cum Development Project), MPKV, Rahuri. Least square analysis (Harvey, 1966) was carried out to assess influence of period and season of calving on herd life (HL), productive life (PL), productive life milk yield (PLMY), milk yield per day of lactation length (DMY/LL), milk yield per day of productive life (DMY/PL), dry day percentage (DD%), service period percentage (SP%), total calves born (TCB), total normal calves born (TNCB), total female calves born (TFCB). Correlation and regression studies were carried out. The least square means for herd life (HL), productive life (PL), productive life milk yield (PLMY), milk yield per day of lactation length (DMY/LL), milk yield per day of productive life (DMY/PL), dry days (%), service period (%), total calves born (TCB), total normal calves born (TNCB) and total female calves born (TFCB) were 2573.72 + 96.84 (days), 1641.42 + 99.58 (days), 10924.70 + 900.44 (kg), 9.03 + 2.44 (kg), 6.57 + 0.27 (kg), 21.83 + 1.37 (%), 26.61 + 1.46 (%), 4.00 + 0.21, 3.85 + 0.20 and 2.54 + 0.16 in number respectively. The period of first calving had significant (P < 0.01) effect on herd life, productive life, productive life milk yield, service period percentage, total normal calves born, and total female calves born and non-significant effect on dry days percentage and total calves born in Phule Triveni crossbred cattle. Non significant effect of season of calving on all traits under study was observed. The positive and significant association between PL with HL and PLMY; HL with PLMY and PLMY with DM/PL was observed in Phule Triveni crossbred cattle. The magnitude of association was high whereas, negatively significant with small magnitude association was observed between AFC and PLMY, DMY/PL in Phule Triveni crossbred cattle. Regression of AFC on DMY/PL and regression of PL on HL and PLMY was significant in Phule Triveni crossbred cattle. Phule Triveni crossbred cattle yielded 9.05 kg and 6.57 kg of milk in a lactating days and 1641.42 productive days with 21.83% dry days, this revealed that Phule Triveni crossbred cattle was in productive period for 78.17%.
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