m high and 0.08 m2 surface) was situated near the opposite solid
fence, but away from the food hopper and fodder rake, to allow lambs
to play. The lambs in the conventional environment or controls (CO)
were maintained in pens of the same size as EE, but without cereal
straw (as bedding or forage) or ramps (common environmental conditions
in CCs). For hygienic reasons a thin layer of sawdust was added at
the beginning of the experiment. All lambs were fed with commercial
concentrate (Ovirum Alta Energía®) containing barley, wheat, calcium
carbonate, sodium chloride and a vitamin supplement corrector (18%
crude protein and 11.5 MJ metabolisable energy/kg DM). Feeding and
water consumptionwere ad libitum. In both treatments the concentrate
hopper was wide enough to allow all lambs to eat simultaneously.
Water was provided using a float drinker installed in a corner of each
pen. Feed consumption (concentrate) was registered to estimate the
conversion index during the fattening period. Animals were weighed
individually at the beginning of the experimental period (W1) and
just before slaughter (W2).
m high and 0.08 m2 surface) was situated near the opposite solidfence, but away from the food hopper and fodder rake, to allow lambsto play. The lambs in the conventional environment or controls (CO)were maintained in pens of the same size as EE, but without cerealstraw (as bedding or forage) or ramps (common environmental conditionsin CCs). For hygienic reasons a thin layer of sawdust was added atthe beginning of the experiment. All lambs were fed with commercialconcentrate (Ovirum Alta Energía®) containing barley, wheat, calciumcarbonate, sodium chloride and a vitamin supplement corrector (18%crude protein and 11.5 MJ metabolisable energy/kg DM). Feeding andwater consumptionwere ad libitum. In both treatments the concentratehopper was wide enough to allow all lambs to eat simultaneously.Water was provided using a float drinker installed in a corner of eachpen. Feed consumption (concentrate) was registered to estimate theconversion index during the fattening period. Animals were weighedindividually at the beginning of the experimental period (W1) andjust before slaughter (W2).
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