Page 25 - Effects of dried citrus pulp on nutrient intake, nitrogen balance and growth performance in Lohi lambs

that nutrient digestibility was higher in cows supplemented TMR having DCP than those
supplemented TMR having soya hulls and corn gluten feed. This might be due to readily

available and fermentable fiber fraction of dried citrus pulp when soya hulls and corn gluten
feed were replaced by DCP in TMR fed to non-lactating Angus cows.

Sudweeks (1977) performed three trials to evaluate the effect of DCP on nutrient

digestibility in sheep. Diet fed to sheep in the trail constituted, 10, 40 and 70% levels of
corn, DCP and soya bean mill feed on DM basis along with a single forage source (corn

silage, sorghum silage and Bermuda grass hay, respectively). The sheep were also
supplemented with soya bean meal, di calcium phosphate and salt to meet their

maintenance requirements. It was observed that nutrient digestibility increased with

increasing the levels of each of the concentrate energy source and was higher in animals
fed 70% DCP than those fed corn and soya bean mill feed. Bhattacharya and Harb (1973)

performed a trial to check the effect of DCP on nutrient digestibility in Awassi lambs. Citrus

pulp dried at 90˚C was used with different levels i.e. 0, 20, 40 and 60% (on DM basis).
These formulated diets were fed to Awassi lambs in 4x4 Latin square design. Results

revealed that nutrient digestibility increased by increasing the levels of DCP in diets of
Awassi lambs.

On the other hand different results were observed by O’Mara et al. (1999) who
conducted a comparative trial to evaluate the effects of DCP on nutrient digestibility using

sheep and cattle. Four sheep (7-9 months age) and four cattle (1.5 years age) were offered
77.7% DCP of dietary DM as concentrate energy source along with 16% hay and 0.63%

soya bean meal. Results showed nutrients digestibility coefficients were similar between

sheep and cattle as nutrient digestibility results were significant.

Similarly, Ahooei et al. (2011) executed trial to assess the effect of DCP on nutrient

digestibility in fattening swine male calves. Twenty fattening swine male calves were
equally divided in four experimental groups allocating four experimental diets with or

without urea following urea and DCP (control), 12% DCP + 0% urea, 0% DCP + 0.65%

urea, 12% DCP + 0.65% urea. All experimental diets consisted of 35% forage (corn silage)
and 65% concentrate. The experiment lasted for 100 days (15 days adaptation period and

85 days experimental period). Results revealed that supplementation of DCP in the diet had
a non-significant effect on nutrient digestibility. Non-significant result on nutrient

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