Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/4422
Title: Dietary prevention of cannibalism in layers
Contributor(s): Choct, Mingan  (author)orcid ; Hartini, Sri (author); Hinch, Geoffrey  (author)orcid ; Nolan, John Vivian  (author)orcid 
Publication Date: 2002
Handle Link: https://hdl.handle.net/1959.11/4422
Abstract: Severe beak trimming results in chronic pain in laying hens (Lunam and Glatz, 1995). Consequently, some European countries have imposed either a total ban or reduced the severity of beak-trimming. This has led to major outbreaks of cannibalism in birds housed in production systems, such as barn and free range, and welfare-friendly methods of controlling cannibalism, e.g., dietary management and low-light housing, are urgently required. We reported (Hartini et al., 2001) that cannibalism mortality in untrimmed birds fed a commercial diet was 28.9%, but was 14.3%, 15.9% and 17.8%, respectively, in birds fed diets containing higher levels of fibre. To investigate the mechanisms whereby high fibre diets prevent cannibalism, we used the same four diets (Diet 1: commercial; Diet 2: Millrun; Diet 3: Barley, and Diet 4: Barley + enzyme) used by Hartini et al. (2001) and determined digesta viscosity and transit time in ISA Brown hens at 42 weeks of lay. Eight birds per diet were kept in individual cages and fed the experimental diets for 7d. On d8, all birds were fasted for 2h and given 10g of their diet containing a digestibility marker (400mg/kg alkane C₃₈H₇₄). After two hours, excreta were collected every 30 min for 8h, alkane concentrations were determined and digesta transit time calculated... The birds were fed their respective diets for a further 7d and were killed and viscosity measures made on their gut contents. The ileal viscosity values (mPa.s) for diets 1, 2, 3, and 4, were 8.4, 5.6, 4.8 and 3.5 respectively, and were significantly (P<0.01) different from one another.
Publication Type: Conference Publication
Conference Details: APSS 2002: 14th Annual Australian Poultry Science Symposium, Sydney, NSW, Australia, 11 - 13 February, 2002
Source of Publication: Proceedings of the Australian Poultry Science Symposium, v.14 p.157
Publisher: University of Sydney, Poultry Research Foundation
Place of Publication: Sydney, Australia
ISSN: 1034-6260
1034-3466
Fields of Research (FoR) 2008: 070204 Animal Nutrition
Socio-Economic Objective (SEO) 2008: 830309 Poultry
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
Publisher/associated links: http://www.vetsci.usyd.edu.au/apss/documents/2002/APSS2002-choct-pp157-161.pdf
http://trove.nla.gov.au/work/6382329?selectedversion=NBD44769183
Appears in Collections:Conference Publication
School of Environmental and Rural Science

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