Association of feed efficiency with organ characteristics and fatty liver haemorrhagic syndrome in laying hens

Doreen Onyinye Anene; Yeasmin Akter; Peter John Groves; Neil Horadagoda; Sonia Yun Liu; Amy Moss; Christine Hutchison; Cormac John O’Shea

Association of feed efficiency with organ characteristics and fatty liver haemorrhagic syndrome in laying hens

Doreen Onyinye Anene, Yeasmin Akter, Peter John Groves, Neil Horadagoda, Sonia Yun Liu, Amy Moss, Christine Hutchison, Cormac John O’Shea

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Poor feed efficiency (FE) in hens impacts body weight (BW) and may reflect suboptimal health. Fatty Liver Haemorrhagic Syndrome (FLHS) is mostly observed in laying hens and affects egg production and hen performance. The aim of this study was to investigate the relationships of FE and BW with organ characteristics, liver composition and incidence of FLHS of 150 individually housed ISA Brown hens ranked on the basis of feed conversion ratio (FCR) attained from early lay. At 45 weeks, 10 birds per FE group (HFE"”High feed efficient; MFE"”medium feed efficient; LFE"”low feed efficient) were randomly selected and euthanized. Hen BW was positively associated with feed intake and FCR. The HFE hens had a lower abdominal fat pad and liver weight compared to LFE hens. FLHS lesion score was higher (worse) in the LFE than HFE hen group and was moderately positively associated with BW and abdominal fat pad, but strongly positively associated with liver weight. Liver pathology of LFE hens showed hepatocytes with abnormal retention of lipids causing distended cytoplasmic vacuoles compared to the HFE hens. Hens which exhibited poorer FE in early lay had heavier abdominal fat pads, heavier, fatter livers and were more prone to FLHS.

Original language	English
Article number	5872
Number of pages	11
Journal	Scientific Reports
Volume	13
Issue number	1
Publication status	Published - Dec 2023

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© 2023, The Author(s).

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Cite this

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title = "Association of feed efficiency with organ characteristics and fatty liver haemorrhagic syndrome in laying hens",

abstract = "Poor feed efficiency (FE) in hens impacts body weight (BW) and may reflect suboptimal health. Fatty Liver Haemorrhagic Syndrome (FLHS) is mostly observed in laying hens and affects egg production and hen performance. The aim of this study was to investigate the relationships of FE and BW with organ characteristics, liver composition and incidence of FLHS of 150 individually housed ISA Brown hens ranked on the basis of feed conversion ratio (FCR) attained from early lay. At 45 weeks, 10 birds per FE group (HFE{"}”High feed efficient; MFE{"}”medium feed efficient; LFE{"}”low feed efficient) were randomly selected and euthanized. Hen BW was positively associated with feed intake and FCR. The HFE hens had a lower abdominal fat pad and liver weight compared to LFE hens. FLHS lesion score was higher (worse) in the LFE than HFE hen group and was moderately positively associated with BW and abdominal fat pad, but strongly positively associated with liver weight. Liver pathology of LFE hens showed hepatocytes with abnormal retention of lipids causing distended cytoplasmic vacuoles compared to the HFE hens. Hens which exhibited poorer FE in early lay had heavier abdominal fat pads, heavier, fatter livers and were more prone to FLHS.",

author = "Anene, {Doreen Onyinye} and Yeasmin Akter and Groves, {Peter John} and Neil Horadagoda and Liu, {Sonia Yun} and Amy Moss and Christine Hutchison and O{\textquoteright}Shea, {Cormac John}",

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AU - Anene, Doreen Onyinye

AU - Akter, Yeasmin

AU - Groves, Peter John

AU - Horadagoda, Neil

AU - Liu, Sonia Yun

AU - Moss, Amy

AU - Hutchison, Christine

AU - O’Shea, Cormac John

PY - 2023/12

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N2 - Poor feed efficiency (FE) in hens impacts body weight (BW) and may reflect suboptimal health. Fatty Liver Haemorrhagic Syndrome (FLHS) is mostly observed in laying hens and affects egg production and hen performance. The aim of this study was to investigate the relationships of FE and BW with organ characteristics, liver composition and incidence of FLHS of 150 individually housed ISA Brown hens ranked on the basis of feed conversion ratio (FCR) attained from early lay. At 45 weeks, 10 birds per FE group (HFE"”High feed efficient; MFE"”medium feed efficient; LFE"”low feed efficient) were randomly selected and euthanized. Hen BW was positively associated with feed intake and FCR. The HFE hens had a lower abdominal fat pad and liver weight compared to LFE hens. FLHS lesion score was higher (worse) in the LFE than HFE hen group and was moderately positively associated with BW and abdominal fat pad, but strongly positively associated with liver weight. Liver pathology of LFE hens showed hepatocytes with abnormal retention of lipids causing distended cytoplasmic vacuoles compared to the HFE hens. Hens which exhibited poorer FE in early lay had heavier abdominal fat pads, heavier, fatter livers and were more prone to FLHS.

AB - Poor feed efficiency (FE) in hens impacts body weight (BW) and may reflect suboptimal health. Fatty Liver Haemorrhagic Syndrome (FLHS) is mostly observed in laying hens and affects egg production and hen performance. The aim of this study was to investigate the relationships of FE and BW with organ characteristics, liver composition and incidence of FLHS of 150 individually housed ISA Brown hens ranked on the basis of feed conversion ratio (FCR) attained from early lay. At 45 weeks, 10 birds per FE group (HFE"”High feed efficient; MFE"”medium feed efficient; LFE"”low feed efficient) were randomly selected and euthanized. Hen BW was positively associated with feed intake and FCR. The HFE hens had a lower abdominal fat pad and liver weight compared to LFE hens. FLHS lesion score was higher (worse) in the LFE than HFE hen group and was moderately positively associated with BW and abdominal fat pad, but strongly positively associated with liver weight. Liver pathology of LFE hens showed hepatocytes with abnormal retention of lipids causing distended cytoplasmic vacuoles compared to the HFE hens. Hens which exhibited poorer FE in early lay had heavier abdominal fat pads, heavier, fatter livers and were more prone to FLHS.

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Association of feed efficiency with organ characteristics and fatty liver haemorrhagic syndrome in laying hens

Abstract

Bibliographical note

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