Pasture-Based System：Effects on Performance, Egg Quality, Visceral Organ Indexes, Reproductive System, and Hematological Parameters of Laying Hens

YANG Zhi; ZHANG Decai; YANG Haiming; WANG Wei; ZHU Xiaochun; CAO Yujuan; JIANG Zhi

doi:10.3969/j.issn.1006-267x.2014.07.027

2014 , Vol. 26 >Issue 7: 1935 - 1941

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.07.027

Short Communications

Pasture-Based System：Effects on Performance, Egg Quality, Visceral Organ Indexes, Reproductive System, and Hematological Parameters of Laying Hens

YANG Zhi ,
ZHANG Decai ,
YANG Haiming ,
WANG Wei ,
ZHU Xiaochun ,
CAO Yujuan ,
JIANG Zhi

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College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China

Received date: 2014-01-29

Online published: 2014-07-01

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Abstract

This experiment was conducted to investigate the effects of pasture-based system on performance, egg quality, visceral organ indexes, reproductive system, and hematological parameters of laying hens. Sixty New Yangzhou laying hens were selected and randomly divided into 2 treatments with 3 replicates per treatment and 10 hens per replicate. Birds were reared in indoor confinement without outdoor access and raised in pens on litter with outdoor access to pasture, respectively. Birds were all fed ad libitum, and egg production and feed consumption were recorded daily. At 42 days of the test, two hens per replicate were randomly selected to collect blood samples at 08:00, and then slaughtered to determine the indexes related visceral organ and reproductive system. Six eggs per replicate were randomly selected to determine egg quality. The results showed as follows: compared with indoor rearing, the laying rate of laying hens in pasture-based system was significantly decreased (P0.05); the serum globulin content was significantly increased (P<0.01), and the hemoglobin content and haematocrit were significantly increased (P<0.05), but the serum albumin and glucose contents were distinctly decreased (P<0.01). It is concluded that compared with indoor rearing, pasture-based system can reduce the laying rate of laying hens, but meliorate the egg quality, increase gizzard index and cecum index, and improve the body health in a way.

Key words： pasture-based system; laying hen; performance; egg quality; visceral organ indexes; reproductive system; hematological parameters

Cite this article

YANG Zhi , ZHANG Decai , YANG Haiming , WANG Wei , ZHU Xiaochun , CAO Yujuan , JIANG Zhi . Pasture-Based System：Effects on Performance, Egg Quality, Visceral Organ Indexes, Reproductive System, and Hematological Parameters of Laying Hens[J]. Chinese Journal of Animal Nutrition, 2014 , 26(7) : 1935 -1941 . DOI: 10.3969/j.issn.1006-267x.2014.07.027

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