58 Energy Values of Faba Beans and Field Peas Fed to Growing Pigs

Faba beans (FB) and field peas (FP) are pulses and variation among cultivars may lead to differences in the response of pigs. Hence, information on the digestible energy (DE) and metabolizable energy (ME) of different cultivars is important. Two experiments (Exp) were conducted with growing pigs to determine the DE and ME of organic FB and Ds-Admiral FP (FPD) in Exp. 1, Hampton FP (FPH) and 4010 FP (FP4) in Exp. 2 using total collection method. Twenty-four barrows were individually housed in metabolism crates and assigned to 3 dietary treatments in a randomized complete block design with BW as blocking factor in each study. The reference diet was prepared to contain corn, soybean meal, and soybean oil as the sole sources of energy and the test ingredient was added to the reference diet at 300 g/kg. Daily feed allowance was estimated at 4.5% of mean BW of pigs in each block. On d 6 and 11, a marker was added to the first meal fed to the pigs and collection of feces started at the appearance of first marker in feces and stopped at the appearance of second marker. During this period, urine was quantitatively collected. In Exp. 1, diets containing FB or FPD had less (P < 0.01) DE and ME compared with the reference diet. The respective DE and ME were 3,772 and 3,603 kcal/kg DM in FB and 3,683 and 3,542 kcal/kg DM in FPD. In Exp. 2, diets containing FP4 had less (P < 0.01) DE and ME compared with FPH and reference diet. The DE and ME were 4,164 and 4,014 kcal/kg DM in FPH and 3,574 and 3,467 kcal/kg DM in FP4, respectively. In conclusion, the estimated energy values in FB and FP may be used in diet formulation.