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Egg enrichment with n-3 fatty acids in farmed hens in sub-optimum temperature: a cold-temperament additive mix alleviates adverse effects of stress on performance and health

Citation

Hosseini, H and Esmaeili, M and Zare, M and Rombenso, A, Egg enrichment with n-3 fatty acids in farmed hens in sub-optimum temperature: a cold-temperament additive mix alleviates adverse effects of stress on performance and health, Journal of Animal Physiology and Animal Nutrition pp. 1-12. ISSN 0931-2439 (2021) [Refereed Article]


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DOI: doi:10.1111/jpn.13659

Abstract

At some stage, laying hen farming is likely to be subjected to sub-optimum temperatures (SOTem) due to climate change. While egg enrichment with n-3 fatty acids is a common practice in the poultry industry, in SOTem it has been less investigated. This study tested the effects of egg enrichment through extruded flaxseed (FLX) (180g/kg) alone or along with hulled-soaked barley (H-SB) (170g/kg), namely FLBA, with and without a cold-temperament additive mix (CTA) (25g/kg: 5g/kg flixweed (Descurainia sophia), 10g/kg dried herb-extraction residues from pussy willow (Salix aegyptiaca) and 10g/kg dried lemon (Citrus limon) residue) in two temperatures (20C and SOTem: 27C) on egg performance, yolk fatty acids, lipid components, blood biochemistry, serological enzymes, antioxidant and immune system of Hy-Line W-36 53-week-old for 9weeks. Two hundred seventy layers were randomly distributed to nine treatments, resulting in six replicates with five hens. Hens fed flaxseed diets, regardless of temperature or CTA, had higher levels of n-3 fatty acids in yolks than others. Temperature negatively influenced feed intake and egg production. FLX+H27 and FLBA+H27 groups outperformed the other groups regarding cholesterol in yolk (10.1, 10.3mg/g yolk), high-density lipoprotein (HDL) (5.19, 4.93mg/g yolk), total protein (FLX+H27: 6.82mg/dl), HDL in the blood (FLBA+H27:83.8mg/dl), superoxide dismutase (FLBA+H27:90.4U/ml), glutathione reductase (FLBA+H27: 1042.1U/ml), glutathione peroxidase (FLX+H27: 1149.7U/ml) and catalase (FLBA+H27: 12.5U/ml). Total antibody, immunoglobulin G and immunoglobulin M after 42days were significantly higher in chicks fed CTA-added diets (p<0.05). Replacing corn and soya bean meal with H-SB did not negatively change the above-mentioned factors. Our findings collectively suggest that egg enrichment with n-3 fatty acids through dietary FLBA+H27 (180g/kg flaxseed, 170g/kg H-SB, and 25g/kg CTA) in SOtem is suggested without any adverse impacts.

Item Details

Item Type:Refereed Article
Keywords:antioxidant system, blood cholesterol, climate change, egg performance, extruded flaxseed, n-6/n-3 ratio
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Animal production
Research Field:Animal nutrition
Objective Division:Animal Production and Animal Primary Products
Objective Group:Livestock raising
Objective Field:Poultry
UTAS Author:Esmaeili, M (Mr Moha Esmaeili)
ID Code:150281
Year Published:2021
Web of Science® Times Cited:2
Deposited By:Fisheries and Aquaculture
Deposited On:2022-06-06
Last Modified:2022-06-08
Downloads:0

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