Abstract
This study analysed the effects of shortening the breeding period from 85-90 to 63-66 days on herd fertility. The data set included 1,063 calving events comprising two breeds (Parda de Montaña, PA, and Pirenaica, PI), two calving seasons (autumn and spring) and 8 years (1999 to 2006). Overall actual pregnancy rate over a breeding period of 85-90 days was moderate in both seasons, but slightly higher in autumn than in spring (68% vs. 52%; /0.10). Nevertheless, pregnancy rate within the first 63-66 days was similar in both seasons (56% vs. 46%; /».10). The day 65 after initiation of the calving period 86% and 92% of total calving had occurred in autumn and spring, respectively, regardless the season and year (P>0.10). Short breeding periods may allow for concentrated calving seasons, resulting in greater calf homogeneity at weaning and a more efficient labour organisation.
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References
Casasús, I., A. Sanz, D. Villalba, R. Ferrer and R. Revilla, 2002. Factors affecting animal performance during the grazing season in a mountain cattle production system. J. Anim. Sci. 80: 1638-1651.
Daza, A., and R. Martín, 2007. Estimación de la carga ganadera económicamente óptima en fincas de ganado vacuno de carne del ecosistema de la dehesa. ITEA Vol. Extra 28 (I): 294-296.
Sanz A., A. Bernués, D. Villalba, I. Casasús and R. Revilla, 2004. Influence of management and nutrition on postpartum interval in Brown Swiss and Pirenaica cows. Liv. Prod. Sci. 86: 179-191.
Villalba D., I. Casasús, A. Sanz, J. Estany and R. Revilla, 2000. Pre-weaning growth curves in Brown Swiss and Pirenaica calves with emphasis on individual variability. J. Anim. Sci. 78: 1132-114.
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Álvarez-Rodríguez, J., Casasús, I., Revilla, R., Blanco, M., Sanz, A. (2012). Managing the breeding and calving seasons in the suckler cow herd. In: Bouche, R., Derkimba, A., Casabianca, F. (eds) New trends for innovation in the Mediterranean animal production. EAAP – European Federation of Animal Science, vol 129. Wageningen Academic Publishers, Wageningen. https://doi.org/10.3920/978-90-8686-726-4_11
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DOI: https://doi.org/10.3920/978-90-8686-726-4_11
Publisher Name: Wageningen Academic Publishers, Wageningen
Online ISBN: 978-90-8686-726-4
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