Feed Intake, Digestibility, Growth Performance and Blood Profiles of Three Ethiopian Fat Tail Hair Sheep Fed Hay Supplemented with Two Levels of Concentrate Supplement ()
ABSTRACT
An experiment arranged in 2×3 (2 concentrate supplement levels (CSL) and
3 breeds) factorial was carried out to evaluate the effect of CSL, breeds, and
their interaction on feed intake, digestibility, feed utilization efficiency,
and blood profiles of Ethiopian fat-tail hair sheep. The CSL were 1% and 1.75% body weight,
designated as L1 and L2, respectively. The breeds used were yearling intact
male Blackhead Ogaden (BHO), Horro and Washera. Sixteen sheep from each breed
were divided into two based on initial body weight and randomly allocated to
two dietary treatments for digestibility and growth trials of 10 and 90 days,
respectively. Grass hay as a basal diet was offered ad libitum to
each sheep. Feed intake every day and live body weight at interval of ten days
were recorded for the duration of the experiment. Blood samples and linear body
measurements were taken a week before the end and on the last day of the
experiment from all sheep, respectively. Dry matter and nutrient intakes,
except concentrate supplement and CP, were influenced by the interaction. The
higher (p<0.0001)
DM digestibility was recorded from sheep supplemented with L2 than L1.
Consequently, sheep supplemented with L2 had significantly higher (P<0.05)
feed conversion efficiency (FCE), average daily gain (ADG) (57.3 vs 44.2 kg),
total gain (TG) (5.3 vs 3.9 kg) and final body weight (FBW) than those
supplemented with L1. Among breeds, Horro sheep recorded higher (P<0.05) DM
intake, digestibility, and FCE than the rest of the breeds. Consequently, this
breed has significantly (p<0.05) higher TG, ADG, and FBW. Some of the blood
hematology (PCV, MCV, neutrophils, and monocytes) and sera metabolites (total
protein, urea, and cholesterol) values were influenced by the interaction in
favor of L2. Hemoglobin concentration was higher for Washera than the other
breeds (p<0.05) but similar for the two CSL (P>0.05). In conclusion, the
study indicate the presence of variation in nutrient intake and utilization,
performance traits, and blood profiles among breeds and between CSL, most of
which were in favor of Horro breed and high level of concentrate.
Share and Cite:
Ayele, S. , Urge, M. , Animut, G. and Yusuf, M. (2017) Feed Intake, Digestibility, Growth Performance and Blood Profiles of Three Ethiopian Fat Tail Hair Sheep Fed Hay Supplemented with Two Levels of Concentrate Supplement.
Open Journal of Animal Sciences,
7, 149-167. doi:
10.4236/ojas.2017.72013.