Articulo
Efecto de diferentes alternativas de manejo de ovejas lecheras east friesian: experimentacion con un modelo de simulacion
CIENCIA E INVESTIGACION AGRARIA (IMPRESA);
CIENC INVESTIG AGRAR (IMPR)
Registro en:
D97I2008
D97I2008
NO ENCONTRADO
0304-5609
Autor
CUBILLOS-OYARZO, GUSTAVO
GARCIA-GOMEZ, FERNANDO
AGUILAR-GONZALEZ, CLAUDIO
ABASTO-F., PERCY
Institución
Resumen
A group of experiments was designed with a developed and validated model for dairy East Friesian ewes, to quantify the effect of the supplement inclusion to different stocking rates, on the productive and reproductive parameters of grazing dairy ewes. The experiments were carried out simulating animals of 75±0.5 kg and 3.0 years old average, varying stocking rate in ranges of 1, 3, 5, 7 and 9 animals/ha, beginning the simulation in January, 45-day duration of flushing, with a nursing period of 200 days, potential milk production of 450 litres per lactation, with lambs to be weaned at 70 days old. The animals are grazing Festuca arundinacea pasture, with instantaneous initial availability of 1 500 kg dry matter/ha. the productive systems with supplement showed significantly bigger productive and reproductive parameters on the average (P<0.05) than those without supplement. The parameters were: ovulation rates, birth weaning and parturition weight, daily milk production and dry matter intake. FONDEF 1 FONDEF 27