Shafiei, Azam and Khavarinezhad, Sina and Javandel, Faramin and Nosrati, Mehran and Seidavi, Alireza and Diarra, Siaka S.
(2018)
Effects of duration of early feed withdrawal and
re-feeding on growth, carcass traits, plasma
constituents and intestinal microflora of broiler
chickens.
Journal of Applied Animal Research, 46
(1).
pp. 1358-1362.
ISSN 0971-2119
Abstract
The effect of different feed withdrawal durations and re-feeding on broiler performance was investigated.
A total of 225 broiler chicks (Ross 308) were assigned to 5 groups; control (full feeding) and feed
withdrawal for 6, 8, 10 and 12 h daily. Feed intake and weight gain were reduced (P < .05) in the feed
withdrawal groups during the starter phase, but were not affected during later growth. Feed
conversion ratio was not affected by the treatment. The relative weight of carcass was reduced (P < .05)
in 6 and 12 h feed withdrawal groups. Breast weight was lowest on the control group and highest on
the 8 h withdrawal (P < .05) group. The weight of the thigh was reduced (P < .05) on the control group.
Plasma protein was higher on the control group and 6 h group compared to 10 h feed withdrawal
group (P < .05). Plasma albumin was reduced on 12 and uric acid on the control and 6 withdrawal
groups. There were no treatment effects on plasma cholesterol, HDL and LDL values. E. coli count was
not affected by treatment, but Lactobacilli count was higher (P < .05) on the 12 h feed withdrawal
group. Young broilers subjected to feed withdrawal for 8–10 h daily can compensate for performance
losses in the early stage of growth and maximize the relative weights of carcass, breast muscle and
thigh, but withdrawal lengths of 6 and 12 h might be too short and too long, respectively, to improve
performance losses after resumption of full feeding.
UNSPECIFIED
Actions (login required)
 |
View Item |
![[img]](http://repository.usp.ac.fj/style/images/fileicons/application_pdf.png)