was 1,005 kJ/kg BW0.6·d–1. Therefore, the feeding levels
of 60, 80, and 100% of their estimated ad libitum ME
intake (i.e., 1.44, 1.92, and 2.40 MJ ME/kg BW0.6·d–1)
were assumed to be above the maintenance requirement,
whereas the feeding levels of 0, 20, and 40% of their
estimated ad libitum ME intake were assumed to be below
the maintenance requirement. Feed allowance were
adjusted every 2 or 3 d based on mean anticipated BW
of the pigs. Within each growing phase, measurements
were conducted on 6 pigs per feeding level. An adaptation
period of 5 d was used to adjust to the new feeding
level. Barrows in the fasted treatment were fed on
an ad libitum basis during the adaptation period. After
the adaptation period, barrows in the fasted treatment
were kept in respiration chambers for 2 d to measure
FHP. Barrows assigned to the other treatments were
kept individually in open-circuit respiration chambers
for a 5-d balance trial followed by a 2-d fasting period.
Heat production in the fed state was measured and feces
and urine were collected in the balance trial. Diets were
based on corn and soybean meal (Table 1) and were formulated
to meet the nutrient requirements for growing
was 1,005 kJ/kg BW0.6·d–1. Therefore, the feeding levels
of 60, 80, and 100% of their estimated ad libitum ME
intake (i.e., 1.44, 1.92, and 2.40 MJ ME/kg BW0.6·d–1)
were assumed to be above the maintenance requirement,
whereas the feeding levels of 0, 20, and 40% of their
estimated ad libitum ME intake were assumed to be below
the maintenance requirement. Feed allowance were
adjusted every 2 or 3 d based on mean anticipated BW
of the pigs. Within each growing phase, measurements
were conducted on 6 pigs per feeding level. An adaptation
period of 5 d was used to adjust to the new feeding
level. Barrows in the fasted treatment were fed on
an ad libitum basis during the adaptation period. After
the adaptation period, barrows in the fasted treatment
were kept in respiration chambers for 2 d to measure
FHP. Barrows assigned to the other treatments were
kept individually in open-circuit respiration chambers
for a 5-d balance trial followed by a 2-d fasting period.
Heat production in the fed state was measured and feces
and urine were collected in the balance trial. Diets were
based on corn and soybean meal (Table 1) and were formulated
to meet the nutrient requirements for growing
การแปล กรุณารอสักครู่..
![](//thimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)