Directory UMM :Data Elmu:jurnal:A:Animal Feed Science and Technology:Vol85.Issue1-2.May2000:
Animal Feed Science and Technology
85 (2000) 99±109
Chemical composition and nutritive value of some
tropical by-product feedstuffs for small
ruminants Ð in vivo and in
vitro digestibility
Eroarome Martin Aregheore*
Department of Agricultural Sciences, Animal Production Unit, College of Education, P.M.B. 1251,
Warri, Delta State, Nigeria
Received 5 July 1999; received in revised form 4 February 2000; accepted 23 February 2000
Abstract
Chemical composition and nutritive values of by-product feedstuffs (BPF) used for small
ruminants were evaluated. Four BPF from groundnut shells (GNS), maize cobs (MC), cassava peels
(CaP), and citrus pulp/peels waste (CPPW) were used to prepare complete diets fed to goats and
sheep in separate trials. Twelve goats and 16 sheep 16±18 months old weighing on average
12.960.28 and 14.050.18 kg, were divided into three and four groups, respectively, and used in
two separate growth and digestibility studies. In vitro digestibility trial was carried out. In vivo and
in vitro data were compared. Chemical composition of BPF differed in nutrient contents. MC had
the least crude protein content (3.4%). CaP and CPPW had low NDF and ADF. GNS and MC were
higher in cell wall constituents. Voluntary DMI was expressed as g/kg live weight (LW) per day and
this ranged between 58.0±62.0 g/kg LW per day in goats and 70.0±83.0 g/kg LW per day in
sheep. DM and CP digestibility were better (P>0.05) in goats fed CaP diet compared to the other
BPF. NDF digestibility was better (P>0.05) in the GNS fed group compared to MC and CaP groups.
GE was lower in CaP fed goats than in the others. Nutrient digestibility of the four by-products was
better (P>0.05) in sheep that received CPPW diet. Other by-products (GNS, MC, CaP) digestibility
followed the trend observed in goats. Net gas production, DM, NDF and OM digestibility and
metabolizable energy (ME, MJ/kg of DM) were signi®cantly different among the BPF (P
85 (2000) 99±109
Chemical composition and nutritive value of some
tropical by-product feedstuffs for small
ruminants Ð in vivo and in
vitro digestibility
Eroarome Martin Aregheore*
Department of Agricultural Sciences, Animal Production Unit, College of Education, P.M.B. 1251,
Warri, Delta State, Nigeria
Received 5 July 1999; received in revised form 4 February 2000; accepted 23 February 2000
Abstract
Chemical composition and nutritive values of by-product feedstuffs (BPF) used for small
ruminants were evaluated. Four BPF from groundnut shells (GNS), maize cobs (MC), cassava peels
(CaP), and citrus pulp/peels waste (CPPW) were used to prepare complete diets fed to goats and
sheep in separate trials. Twelve goats and 16 sheep 16±18 months old weighing on average
12.960.28 and 14.050.18 kg, were divided into three and four groups, respectively, and used in
two separate growth and digestibility studies. In vitro digestibility trial was carried out. In vivo and
in vitro data were compared. Chemical composition of BPF differed in nutrient contents. MC had
the least crude protein content (3.4%). CaP and CPPW had low NDF and ADF. GNS and MC were
higher in cell wall constituents. Voluntary DMI was expressed as g/kg live weight (LW) per day and
this ranged between 58.0±62.0 g/kg LW per day in goats and 70.0±83.0 g/kg LW per day in
sheep. DM and CP digestibility were better (P>0.05) in goats fed CaP diet compared to the other
BPF. NDF digestibility was better (P>0.05) in the GNS fed group compared to MC and CaP groups.
GE was lower in CaP fed goats than in the others. Nutrient digestibility of the four by-products was
better (P>0.05) in sheep that received CPPW diet. Other by-products (GNS, MC, CaP) digestibility
followed the trend observed in goats. Net gas production, DM, NDF and OM digestibility and
metabolizable energy (ME, MJ/kg of DM) were signi®cantly different among the BPF (P