PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF CROSSBRED DAIRY CATTLE AT MENKORER AGRO INDUSTRY ENTERPRISE DAIRY FARM, DEBRE MARKOS, ETHIOPIA

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Abstract:

The objective of this study was to evaluate the productive and reproductive performance of cross bred (HF x zebu) dairy cows at Menkorer agro industry dairy farm enterprise, Debre Markos, Ethiopia. Six years (2011-2017) of data were collected on crossbred dairy cows. The independent fixed variables examined were year and season of birth/calving and parity. Data were analyzed using the General Linear Models (GLM) of (SAS, 2009 Version 9.2). The study revealed that the overall least square means (±SE) for reproductive traits , age at first service (AFS), age at first calving (AFC), days open (DO), calving interval (CI), number of services per conception (NSC) and dry period(DP) were 18.28 ± 1.84 months, 27.67 ±1.86 months,97.3±10.1 7 days, 13.70±0.83 months,1.3 ± 10.02 and 53.75 ± 0.08 days respectively. The overall least squ are means (±SE) for productive traits, average daily milk yield (ADMY), lactation milk yield (LM Y), lactation length (LL), and birth weight were 12.26 ±0.06 liters, 4254.7±5126.72 liters, 354.88 ±5.70 days, and 42.41±0.01 kg respectively. An increased efficiency in reproductive performance of cows was observed over time. Season of birth and year had significant (P

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PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF CROSSBRED DAIRY CATTLE AT MENKORER AGRO INDUSTRY ENTERPRISE DAIRY FARM, DEBRE MARKOS, ETHIOPIA

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