A carregar...
Publicação
Partial replacement of soybean meal with Chlorella vulgaris in broiler diets influences performance and improves breast meat quality and fatty acid composition
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 1.6 MB | Adobe PDF |
Orientador(es)
Resumo(s)
Alternative feed ingredients, such as
microalgae, may be more sustainable in comparison to
conventional feedstuffs that need large amounts of arable
land and are often imported. This study evaluates the
effects of Chlorella vulgaris various inclusion levels in the
diet of broiler chickens on performance, carcass yield,
organ measurements, breast meat quality, fatty acids
profile, and antioxidant capacity. A total of two hundred
forty 5 d old male Ross 308 broilers were randomly allotted
to 4 groups (6 replicates of 10 birds each). Each group
received either a control diet or a diet where soybean
meal was replaced with 10% (CV10%), 15% (CV15%), or
20% C. vulgaris for 40 d. Performance parameters, carcass
and meat traits were evaluated. Compared to the
control group, birds supplemented with C. vulgaris (15%
and 20%) had lower body weight, weight gain, and feed
intake (P < 0.0001), whereas no differences were
observed between the control and CV10% groups (P >
0.05). Feed conversion ratio did not differ between control and CV groups. Diets containing C. vulgaris significantly
increased ileal digesta viscosity, weight and size of
several gastrointestinal compartments, as well as breast
muscle yield (P < 0.0001). Incorporation of C. vulgaris
resulted in yellower breast muscle (P < 0.0001), with significantly
increased chlorophyll a (P < 0.05), chlorophyll
b, and total carotenoids contents (P < 0.0001). Inclusion
of C. vulgaris decreased bacterial count in meat samples
in comparison to controls (P < 0.0001). A 20% C.
vulgaris inclusion resulted in higher water holding capacity
(P < 0.05) and lower cooking loss (P < 0.05). As dietary
C. vulgaris increased, concentrations of
DHA + EPA (P < 0.05) and n-3 PUFA (P < 0.0001)
increased in breast meat, while the n-6/n-3 PUFA ratio
decreased (P < 0.0001). Sensory analysis showed that
breast meat from the CV10% group had the highest
acceptance score. Overall, dietary concentrations of C.
vulgaris of up to 20% improve breast meat quality,
whereas 10% of C. vulgaris inclusion is recommended
Descrição
Palavras-chave
microalgae growth performances Pectoralis major n-3 fatty acids pigments
Contexto Educativo
Citação
Poultry Science, Volume 101, Issue 8, 2022, Article number 101955
Editora
Elsevier