TITLE:
Effects of Guar (Cyamopsis tetragonoloba) Residues on the Performance and Nutrients Digestibility in Finishing Awassi Lambs
AUTHORS:
Jamal Abo Omar, Ahmed Zaazaa, Maen Sheqwarah, Bassam Abu Shanab, Wael Qaisi, Jehad Abdallah
KEYWORDS:
Guar Residues, Awassi Lambs, Performance, Nutrients Digestibility
JOURNAL NAME:
Open Journal of Animal Sciences,
Vol.11 No.1,
January
29,
2021
ABSTRACT: The nutritive quality of guar (Cyamopsis tetragonoloba) residues (GR) was
investigated and the effects of partial replacement of wheat straw by GR on
nutrients intake, digestibility, and growth performance. Twenty four male
lambs, with average body weight (BW) of 40.3 ± 2.5 kg were divided into three
groups. Lambs were fed individually for 104 days with concentrate mixture (18%
crude protein) and wheat straw as a total mixed ration. Wheat straw was
replaced with 0, 100 and 145 g/kg dry matter guar residues. All rations were
isonitrogenous and isocaloric. The fattening trial lasted 104 days. At the end of week 10 of
the trail, a
digestion trial was performed using six lambs from each group. The composition
of nutrients in the GR was 87%, 8.5%, 56.4% and 40.1% for DM, CP, NDF and ADF,
respectively. DM and crude protein (CP) intake were not affected by the
inclusion of GR. However,
neutral detergent fibre (NDF) and acid detergent fibre (ADF) intake were lower
in lambs fed GR compared to control lambs. At the end of the experiment, lambs
fed 100 and 145 g GR/kg DM diets gained more weight (P version (CR). Results from this work suggested that GR had advantages compared to regular roughage (wheat straw) in regard to parameters
investigated as well as the significant reduction in fattening diets cost.