Efecto de la raza de vaca y del nivel de suplementación sobre la producción y calidad de leche en pastoreo
- A.I. Roca-Fernández
- L. Delaby
- A. González-Rodríguez
- M.E. López-Mosquera
- S. Leurent
- Y. Gallard
- Leopoldo Olea Márquez de Prado (coord.)
- Sara M. Rodrigo (coord.)
- Óscar Santamaría Becerril (coord.)
Editorial: Sociedad Española para el Estudio de los Pastos
ISBN: 978-84-695-6999-3
Ano de publicación: 2013
Páxinas: 391-398
Congreso: Sociedad Española para el Estudio de los Pastos. Reunión Científica (52. 2013. null)
Tipo: Achega congreso
Resumo
The effect of cow breed, Friesian vs. Normande (F vs. N), and the level of supplementation,low vs. high concentrate (0 vs. 4 kg DM/cow/day), were evaluated on milk production and quality ofcows (n=72) at INRA "Le Pin au Haras", in France, during the period 2001-09. It was applied a 2x2factorial design to 4 herds (H0, H4, N0 and N4), using the simplified rotational grazing, to perennialryegrass and white clover pastures. Milk yield per lactation was higher (p<0.001) in animals withsupplementation (H4, 8407 and N4, 6733 kg/cow/year) compared to those without it (H0, 6497and N0,5401 kg/cow/year). Friesian cows (7452 kg/cow/year) had higher production levels (p<0.001) thanNormande (6067 kg/cow/year). Multiparous cows produced more milk (p<0.001) than primiparous. Milk protein and fat were higher (p<0.001) in Normande (33.3 and 39.9 g/kg) than in Friesian cows(30.8 and 37.9 g/kg). Normande cows, despite less milk production, can be an alternative to Friesiancows for the grazing systems due to their improvement in milk quality.