2026-04-18T05:20:02Zhttps://recercat.cat/oai/requestoai:recercat.cat:20.500.12327/34552025-10-22T11:24:30Zcom_2072_4428com_2072_4427col_2072_487898
RECERCAT
author
Pecjak Pal, Manca
author
Leskovec, Jakob
author
Levart, Alenka
author
Pirman, Tatjana
author
Salobir, Janez
author
Rezar, Vida
other
Producció Animal
group
Nutrició Animal
2025-10-22T11:24:30Z
2025-10-22T11:24:30Z
2024-11-18
Pal, Manca Pečjak, Jakob Leskovec, Alenka Levart, Tatjana Pirman, Janez Salobir, and Vida Rezar. 2024. “Comparison of High N-3 PUFA Levels and Cyclic Heat Stress Effects on Carcass Characteristics, Meat Quality, and Oxidative Stability of Breast Meat of Broilers Fed Low- and High-Antioxidant Diets.” Animals 14 (22): 3314. doi: 10.3390/ani14223314
2076-2615
http://hdl.handle.net/20.500.12327/3455
https://doi.org/10.3390/ani14223314
This study investigated the individual and combined effects of a high dietary n-3 PUFA
intake and cyclic heat stress (HS) on the carcass characteristics, meat quality, and oxidative stability
of broiler breast meat and the potential of antioxidant supplementation (vitamins E, C, and selenium)
to mitigate these effects. A total of 192 one-day-old male Ross 308 broilers were randomly assigned
to 24 pens within two controlled environment chambers and fed with the following diets: a basal
diet low in antioxidants according to NRC recommendations (NRC group), a basal diet according
to Aviagen recommendations additionally supplemented with 200 IU/kg vitamin E, 250 mg/kg
vitamin C, and 0.15 mg/kg selenium (HAOX group), and these two diets further supplemented
with 5% linseed oil (NRC N-3 and HAOX N-3 groups). On day 22, the broilers were exposed to the
following two environmental conditions: thermoneutral (TN, 21 ◦C) or cyclic HS (HS, 34 ± 1 ◦C,
7 h/d) in a 2 × 2 × 2 factorial design. A high intake of n-3 PUFAs significantly decreased growth
performance, dressing percentage, and breast yield, while the incidence of pale, soft, and exudative
(PSE) meat characteristics and malondialdehyde (MDA) levels increased. Cyclic HS reduced body
weight (BW) and average daily feed intake (ADFI), but had limited effects on meat quality. No
interactions between n-3 PUFAs and HS were observed for any measurements. High antioxidant
supplementation increased breast yield, improved meat quality, and reduced oxidative stress, as
evidenced by an enhanced antioxidant activity and lower MDA levels. In conclusion, n-3 PUFAs had
a negative effect on both the carcass characteristics and meat quality of broilers, while HS primarily
affected only carcass characteristics, with neither stressor having severe adverse effects. High levels
of antioxidants could mitigate the negative effects of dietary- and heat-induced oxidative stress by
enhancing the oxidative stability of broiler meat.
eng
Attribution 4.0 International
Comparison of High n-3 PUFA Levels and Cyclic Heat Stress Effects on Carcass Characteristics, Meat Quality, and Oxidative Stability of Breast Meat of Broilers Fed Low- and High-Antioxidant Diets
info:eu-repo/semantics/article