Detection and comparison of time patterns of behaviours of two broiler breeder genotypes fed ad libitum and two levels of feed restriction

Merlet, François; Puterflam, Julie; Faure, Jean Michel; Hocking, Paul; Магнуссон, Магнус; Picard, Michel

doi:10.1016/j.applanim.2005.02.014

Cited by 21 publications

(12 citation statements)

References 28 publications

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“…Similar observations were made in broilers (Merlet et al 2005). The literature reports strain differences in response to free-ranging behaviour (Nielsen et al 2003), heat stress (Altan et al 2003) and BW (Nthimo et al 2004) in chickens.…”

Section: Discussionsupporting

confidence: 72%

Effects of strain and sex on the behaviour of free-range slow-growing chickens raised in a hot environment

Mutibvu

Chimonyo

Halimani

2017

Journal of Applied Animal Research

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Behaviour is a good indicator of the well-being of chickens. The objective of the study was to compare foraging behaviour in males and females of three indigenous chicken strains under generally hot freerange conditions. Behavioural activities were monitored in 21-wk-old Potchefstroom Koekoek (PK), Ovambo (OV) and Naked Neck (NN) chickens. Birds were separated by sex and allocated to four pens of Chloris gayana. Three birds per pen were randomly chosen and marked with paint 20 min before observation. Temperature humidity index (THI) was calculated and main effects analysed using the general linear models procedure. Naked Necks spent more time walking than OV and PK. Strain did not affect other behaviours. Females spent more time foraging, while males dominated standing and walking. There was negative correlation between THI and time spent foraging. There was interaction between strain and sex on time spent standing. Foraging and drinking behaviours were more prominent in the morning (07:00 h) and late afternoon (17:00 h) compared to the 12:00-h period, whereas preening and dust-bathing were dominant around mid-day. Strain, sex and THI influence behaviour in free-range chickens. Breeding programmes should be cognizant of these attributes in order to produce hardier birds in view of worsening climatic uncertainties. ARTICLE HISTORY

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Section: Discussionsupporting

confidence: 72%

Effects of strain and sex on the behaviour of free-range slow-growing chickens raised in a hot environment

Mutibvu

Chimonyo

Halimani

2017

Journal of Applied Animal Research

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“…The authors showed that pecking at feed is composed of two distinct sets of acts: events organized in T-patterns little affected by the form of the pecked particles and events not structured in T-patterns that might be involved in sensory information. In a following study, Merlet et al (2005) analyzed the behavior of two different genotypes of broiler breeder. The authors compared three different feeding protocols: animals fed "ad libitum", animals under an intermediate feed restriction and, finally, animals with a constant feed restriction.…”

Section: T-patterns In Animal Behaviormentioning

confidence: 99%

T-pattern analysis for the study of temporal structure of animal and human behavior: A comprehensive review

Casarrubea

Jónsson

Faulisi

et al. 2015

Journal of Neuroscience Methods

120

104

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A basic tenet in the realm of modern behavioral sciences is that behavior consists of patterns in time. For this reason, investigations of behavior deal with sequences that are not easily perceivable by the unaided observer. This problem calls for improved means of detection, data handling and analysis. This review focuses on the analysis of the temporal structure of behavior carried out by means of a multivariate approach known as T-pattern analysis. Using this technique, recurring sequences of behavioral events, usually hard to detect, can be unveiled and carefully described. T-pattern analysis has been successfully applied in the study of various aspects of human or animal behavior such as behavioral modifications in neuro-psychiatric diseases, route-tracing stereotypy in mice, interaction between human subjects and animal or artificial agents, hormonal–behavioral interactions, patterns of behavior associated with emesis and, in our laboratories, exploration and anxiety-related behaviors in rodents. After describing the theory and concepts of T-pattern analysis, this review will focus on the application of the analysis to the study of the temporal characteristics of behavior in different species from rodents to human beings. This work could represent a useful background for researchers who intend to employ such a refined multivariate approach to the study of behavior

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“…For example, feed restricted boilers of two different genotypes subjected to two different levels of restriction spent significantly more time pecking at the litter or at the empty feeder than unrestricted birds (Merlet et al, 2005). Feed restriction is, in general, started at one week age.…”

Section: Feed Restrictionmentioning

confidence: 99%

Scientific Opinion on welfare aspects of the management and housing of the grand-parent and parent stocks raised and kept for breeding purposes

2010

EFSA Journal

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This scientific opinion describes welfare aspects of the management and housing of the grand-parent and parent stocks (broiler breeders) raised and kept for breeding purposes in EU member states. The health and welfare consequences were reviewed and a risk assessment on the impact of housing and management on the welfare of broiler breeders, including the influence of genetic selection for fast growth, was carried out. Quantitative data on the different types of husbandry and management systems used in Europe is lacking. In the risk assessment process, the overall top five hazards according to risk scores were barren environments, high stocking density, fast growth rate, feed restriction and low light intensity. These varied slightly when the rearing-laying periods, malesfemales, and fast-slow growing birds were each analysed separately. It is recommended that birds requiring less feed restriction should be selected as future breeders even if this may involve reduced selected pressure on high growth rates. To track improvements over time, the degree of feed restriction required to maintain broiler breeder target weights should be monitored. It is recommended that the prevalence and effectiveness of different types of mutilations is collected and that no mutilation with an effect on welfare as severe as those resulting from cutting off toes or dubbing the comb should be carried out unless justified by evidence for a substantial and unavoidable level of poor welfare in the birds themselves and other birds. Furthermore it was recommended that animal-based welfare outcome indicators for use during monitoring or inspection of breeder stocks, as well as for monitoring trends over time should be developed. KEY WORDSanimal welfare, meat producing chickens, broiler breeders, parents and grand-parents, genetic selection, housing and management, risk assessment, systematic review.

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Detection and comparison of time patterns of behaviours of two broiler breeder genotypes fed ad libitum and two levels of feed restriction

Cited by 21 publications

References 28 publications

Effects of strain and sex on the behaviour of free-range slow-growing chickens raised in a hot environment

Effects of strain and sex on the behaviour of free-range slow-growing chickens raised in a hot environment

T-pattern analysis for the study of temporal structure of animal and human behavior: A comprehensive review

Scientific Opinion on welfare aspects of the management and housing of the grand-parent and parent stocks raised and kept for breeding purposes

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