Feeding behaviour of broiler chickens: a review on the biomechanical characteristics

Neves, DP; Banhazi, Thomas; Nääs, Irenilza de Alencar

doi:10.1590/1516-635x16021-16

Cited by 43 publications

(31 citation statements)

References 142 publications

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“…The granulometry of the tested feeds was 476 µm, 638 µm, and 1243 µm for F1, F2, and F3, respectively. Previous studies reported the impact of diet granulometry on feed consumption [8], and physiological responses to feeding [4,10,20] in broiler chickens, but little was found in current literature about the motion pattern of broiler chickens during feeding [5]. Regarding the particle sizes, the total time of the mandibulations, we found that the beak starts and finishes the mandibulation with its aperture consistent with the size of the particle, in agreement with the previous reports [7,19].…”

Section: Discussionsupporting

confidence: 89%

“…The beak regulates the size of the feed that can be eaten, and the bird decides whether to accept or reject the particle [3]. Thus, the size of the feed particles, also known as granulometry and its shape, plays a vital role in the intake process of broiler chickens [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have addressed the impact of feed granulometry on consumption [8], the physiological responses to feeding [7,9,10], and the dynamic feeding process of chickens [5]. With the advancement of the high-speed cameras, it became possible to register the birds' beak movements not previously recorded.…”

Section: Introductionmentioning

confidence: 99%

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Young Broiler Feeding Kinematic Analysis as A Function of the Feed Type

Neves

Mehdizadeh

Santana

et al. 2019

Animals

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Past publications describe the various impact of feeding behavior of broilers on productivity and physiology. However, very few publications have considered the impact of biomechanics associated with the feeding process in birds. The present study aims at comparing the kinematic variables of young broiler chicks (3–4 days old; 19 specimens) while feeding them with three different feed types, such as fine mash (F1), coarse mash (F2), and crumbled feed (F3). The feeding behavior of the birds was recorded using a high-speed camera. Frames sequences of each mandibulation were selected manually and classified according to the temporal order that occurred (first, second, third, or fourth, and further). The head displacement and the maximum beak gape were automatically calculated by image analysis. The results did not indicate strong correlations between birds’ weight, beak size (length and width), and the kinematic variables of feeding. The differences between the tested feed were found mostly in the first and second mandibulations, probably explained by the higher incidence of “catch-and-throw” movements in F3 (33%) and F1 (26%) than F2 (20%). The “catch-and-throw” movements in F1 (the smallest feed particle) mostly occurred in the first mandibulation, as in F3 (the largest feed particle) also occurred in the latest mandibulations. It might be suggested that the adoption of “catch-and-throw” in the latest mandibulations increases with larger particles. The kinematic variables in the latest mandibulations (from the third one on) seem to be similar for all feed types, which represent the swallowing phase. It might be inferred that the temporal sequence of the mandibulations should be essential to describe the kinematics of a feeding scene of broiler chickens, and the first and second mandibulations are potentially the key factors for the differences accounted by the diverse feed particle sizes.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Young Broiler Feeding Kinematic Analysis as A Function of the Feed Type

Neves

Mehdizadeh

Santana

et al. 2019

Animals

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“…The behavior of chickens can significantly influence their growth rate, consequently influencing production costs (Neves et al, 2010(Neves et al, , 2014. Young chicks present high metabolism rates.…”

Section: Introductionmentioning

confidence: 99%

Effects of Heat Stress on the Daily Behavior of Wenchang Chickens

Chen

2015

Rev. Bras. Cienc. Avic.

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One-day old chicks were randomly distributed into acute heat stress (AHS) or persistent heat stress (PHS) groups. Each group was further divided into control (CK), and three AHS ages (1, 2,or 3 weeks of age) experimental subgroups. The chicks in AHS subgroups were submitted to acute heat stress (40 o C for two hours between 12:00 and 14:00 hours during the weekend) and the effects of heat stress on several daily behaviors were observed. At 8 days of age, the chicks of PHS subgroups were submitted to heat stress (40 o C daily). The heat treatment ceased during the weekends and the effects on the behavior were observed three times daily for three consecutive days. The results showed that, compared with the CK group, the duration and frequency of drinking and lying-down behaviors of the AHS birds increased, whereas the duration of feeding and standing significantly decreased (p<0.01). The time spent walking by PHS birds was significantly longer than that of the CK groups (p<0.01), and drinking was also significantly longer than that of the CK group and was significantly different when birds were three weeks old (p=0.05). When heat stress lasted for two and three weeks in PHS group, the duration of lying down was longer compared with the CK group; however, this behavior was significantly shorter than the CK group when birds were three weeks old (p<0.05). These results indicate that heat stress significantly affects the daily behavior of broilers, including feeding, drinking, lying, standing, and walking.

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“…The poultry industry is the most dynamic sector within the global meat business during the last decade, with the greatest growth reflected in the food global demand increase (Neves et al, 2014). Recently, poultry feed industry continues to search for ways to optimize feed utilization, thereby improving production efficiency, with efforts being focused on changes in diets physical form (Kamphues, 2011).…”

Section: Interoductionmentioning

confidence: 99%

Effects of Forms Feed and Sodium Chloride on Performance, Blood Profile and Carcass Characteristics of Broilers Chicks Under Hot Climatic Conditions

Abdel-Wareth

2018

EPSJ

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The study was investigated to determine the effects of feed physical form and sodium chloride on performance, blood profile and carcass criteria of broiler chickens. One hundred and eighty, one day old Ross broiler chicks were randomly distributed into sex treatment groups. Each treatment group consisted of three replicates of 10 birds each. A factorial design (2×3) was used in which there were two feed forms (mash and pellet). Both mash and pellet diet groups were subdivided into three treatments each (drinking tap water; control group), 1500 ppm sodium chloride and 3000 ppm sodium chloride in drinking water, respectively. The results showed that Body weight, weight gain and feed intake of broilers fed pellet-diet was significantly greater than that of those fed mash diet at 2 and 6 weeks of age. However, Growth performance parameters such as body weight and weight gains were not significantly affected due to the supplementations of sodium chloride in water. Feed conversion ratio was also not significantly affected by the dietary physical form or sodium chloride. Water intakes of broilers were significantly affected by the dietary physical form or sodium chloride levels. Serum K and Ca of broilers fed mash-diet were significantly greater than that of those fed pellet-diet. There were significant differences on serum P and aldosterone concentrations of broilers drinking water supplemented with NaCl levels, but had no effect (P>0.05) on the other variables evaluated. Dressing percentage and internal organs such as liver and gizzard were not significantly affected due to feed physical form or the supplementations of sodium chloride in water, but had effect (P>0.05) on spleen and heart. Based on these results, it can be concluded that fed pelletdiet with or without sodium choride up to 3000 ppm improved productive performance but had no consistent effect on overall carcass traits of broilers.

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Feeding behaviour of broiler chickens: a review on the biomechanical characteristics

Cited by 43 publications

References 142 publications

Young Broiler Feeding Kinematic Analysis as A Function of the Feed Type

Young Broiler Feeding Kinematic Analysis as A Function of the Feed Type

Effects of Heat Stress on the Daily Behavior of Wenchang Chickens

Effects of Forms Feed and Sodium Chloride on Performance, Blood Profile and Carcass Characteristics of Broilers Chicks Under Hot Climatic Conditions

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