Abstract

CRUZ, J.F.; RODRIGUEZ, D.D.; BENAVIDES, A.C.  and  CLAVIJO, J.A.. Characterization of productive and reproductive parameters of Normande breed in Colombia. Arch. zootec. [online]. 2013, vol.62, n.239, pp.345-356. ISSN 1885-4494.  https://dx.doi.org/10.4321/S0004-05922013000300003.

To characterize the Normandobreed in Colombia, the multivariate analysis on 1186 data allowed the identification of four groups within the breed. The minority group was the number 1 (8.2 % of the sampled population), while the larger is group 3 (53.0 % of the population). Adjusted lactation of cows in group 2 averaged 5608.4 kg and reproductive parameters as calving interval (433.4 days) and age at first service (28 months); 80.6 % of animals in this group are under intensive supplemented production systems. In group 3, adjusted lactation was 3317.9 kg, and it had the best reproductive parameters, such as 399.2 days calving interval, and 25.7 months of average age at first service; 48.3 % of the cows belonging to this cluster are under improved extensive production systems, and 49.9 % under intensive systems with supplements. The prevailing (71.9 % of the population) milking system in this group is manual and twice per day.

Keywords : Adjusted milk yield; Age at first service; Calving interval; Calving to conception interval; Milking days; Milk production; Normando breed; Production systems.

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