Effects of inclusion of selenium-enriched yeast in the diet of laying hens on performance, eggshell quality, and selenium tissue deposition
Articolo
Data di Pubblicazione:
2013
Citazione:
Effects of inclusion of selenium-enriched yeast in the diet of laying hens on performance, eggshell quality, and selenium tissue deposition / G. Invernizzi, A. Agazzi, M. Ferroni, R. Rebucci, A. Fanelli, A. Baldi, V. Dell'Orto, G. Savoini. - In: ITALIAN JOURNAL OF ANIMAL SCIENCE. - ISSN 1594-4077. - 12:1(2013), pp. e1.1-e1.8. [10.4081/ijas.2013.e1]
Abstract:
The aim of this study was to evaluate the
bioavailability of ingested selenium (Se) yeast
in laying hens and its effects on performance,
eggshell quality, and tissue Se distribution.
Forty-eight ISA brown laying hens were divided
into 3 treatment groups: Group C, fed a basal
diet containing 0.11 mg Se/kg of feed; Group
SS, fed a basal diet plus 0.4 mg/kg of feed of Se
from sodium selenite; and Group SY, fed a
basal diet plus 0.4 mg/kg of feed of Se from
selenium yeast. Feed intake, egg mass ratio,
and production performance were not affected
by Se supplementation, regardless of the Se
source. Egg weight (+3.61% and +2.95%),
eggshell weight (+4.26% and +5.38%), and
eggshell surface (+2.43% and +1.96%) were
higher (P<0.05) in SS and SY than C, whereas
breaking strength was increased in SY
(P<0.01). Breast muscle, liver and skin Se levels
were higher in SY than in C, while kidney
Se content was higher in SS hens. Eggs from
SY had higher Se levels than SS. Blood metabolites
were not affected in SS or SY groups than
C. A higher Se level was detected in eggs and
breast muscle of SY hens (P<0.05). Seleniumenriched
eggs and edible tissues from organic
Se sources in poultry diet could improve
antioxidant status in humans and reduce possible
Se deficiency-related diseases.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Organic selenium ; laying hen ; bioavailability ; eggshell quality
Elenco autori:
G. Invernizzi, A. Agazzi, M. Ferroni, R. Rebucci, A. Fanelli, A. Baldi, V. Dell'Orto, G. Savoini
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