ORIGINAL PAPER
Effect of exogenous enzymes and Salix babylonica
extract or their combination on haematological
parameters in growing lambs
1 |
Autonomous University of Mexico State, Department of Animal Nutrition,
Faculty of Veterinary Medicine and Zootechnic,
Toluca 50000, Mexico State, Mexico |
2 |
Alexandria University, Faculty of Agriculture (El-Shatby),
2145 Alexandria, Egypt |
3 |
Ain Shams University, Department of Animal Production, Faculty of Agriculture,
11566 Cairo, Egypt |
4 |
Animal Production and Health Section, International Atomic Energy Agency,
A-1400 Vienna, Austria |
J. Anim. Feed Sci. 2012;21(4):577–586
Publication date: 2012-11-15
KEYWORDS
ABSTRACT
The aim of this study was to compare the use of exogenous enzyme preparations (EZ) and/or Salix
babylonica extract (SB) or their combination as feed additives on some haematological parameters in
growing lambs. Twenty Suffolk lambs of 6 to 8-months-old with 24±0.3 kg body weight were used
in the study. Lambs were divided into 4 groups of 5 animals each in a completely randomized design
and the treatments were: 1.control: fed a basal diet of concentrate (30%) and maize silage (70%);
2. EZ: fed the basal diet plus 10 g of enzyme; 3. SB: fed the basal diet plus 30 ml of S. babylonica
extract, and 4. EZSB: fed the basal diet plus 10 g enzyme and 30 ml of S. babylonica extract. Lambs
were housed in individual cages and the experiment was conducted for 60 days. The SB was given
orally while the EZ was mixed with a small amount of the concentrate and maize silage and was
offered ad libitum. Blood samples were collected from each animal on days 0, 15, 30, 45 and 60 of experiment and analysed for haematological parameters. The treatments of EZ, SB or EZSB did not
affect any of the measured blood parameters. Day of sampling modified concentrations of red blood
cells (P=0.001; linear effect), haematocrit (P=0.01; quadratic effect), haemoglobin (P=0.01; linear
effect), mean corpuscular volume (P=0.01; linear effect), monocytes (P=0.004; quadratic effect)
and plasma protein (P=0.0002; linear effect). It could be concluded that Salix babylonica extract,
exogenous enzymes and their combination as feed additives had not a negative effects on the blood
parameters measured and therefore on the health of the lambs.
CORRESPONDING AUTHOR
A. Z. M. Salem
Autonomous University of Mexico State, Department of Animal Nutrition,
Faculty of Veterinary Medicine and Zootechnic,
Toluca 50000, Mexico State, Mexico; Alexandria University, Faculty of Agriculture (El-Shatby),
2145 Alexandria, Egypt
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