Self-selection of dietary protein and energy by broilers grown under a tropical climate: effect of feed particle size on the feed choice

Yo, T.; Siegel, P. B.; Guérin, Hubert; Picard, Michel

doi:10.1093/ps/76.11.1467

Cited by 40 publications

(26 citation statements)

References 18 publications

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“…The physical form of the diet interferes in the feed pattern of broilers (CONDÉ et al, 2014). Similar findings were also observed by YO et al (1997) in broilers 14 days old and with free choice of a particular diet. The authors found that when changing the size of the particles in the feed ration birds reduced the feeding amount during the first 24 hours.…”

Section: Resultssupporting

confidence: 86%

Feed Ration Homogeneity During Distribution of Broilers’ Automatic Feeders

Cardinal¹,

Vale²,

Alonço³

et al. 2014

Revista Brasileira De Engenharia De Biossistemas

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The study aimed to verify the efficiency of two equipment distributors of feed for broilers. Feed samples were collected from two broiler automatic feeder dish, with similar characteristics but different manufacturers. The samples were collected from five points of distribution, namely: storage silo, hopper, the first dish, the middle and the last dish. The samples were subjected to quantitative analysis of ashes and particle size analysis. The data were subjected to analysis of variance (ANOVA), means separated by Tukey test with p <0.01, and analysis of linear regression. The results of statistical ashes analyze show that there is a significant difference in granule size and the amount of ashes. Can be concluded that are segregation of the feed during distribution along the route, being that there is the accumulation of ashes in the first dishes and content decreases as the distribution. The particle size showed the opposite result of ashes, with larger granules in the last dish and smaller granule size at the first dish.Keywords: mineral matter, particle size, segregation. HOMOGENEIDADE NA DISTRIBUIÇÃO DE RAÇÃO EM LINHAS DE COMEDOUROS TIPO PRATO AUTOMÁTICO RESUMOO trabalho foi realizado com o objetivo de verificar a eficiência de dois equipamentos distribuidores de ração para frangos de corte quanto à homogeneidade na distribuição ao longo das linhas. Foram coletadas amostras de dois equipamentos tipo prato automático de características similares, porém de diferentes fabricantes. As amostras foram coletadas em cinco pontos de distribuição, sendo eles: silo de armazenagem, moega, primeiro prato, prato do meio e prato final. As amostras foram submetidas a análises quantitativas de cinzas e análise granulométrica. Os dados obtidos foram submetidos à análise de variância (ANOVA) e as médias comparadas por teste de Tukey em nível de 1% de significância e também regressão linear. Os resultados das análises estatísticas mostraram que há diferença significativa no tamanho de grânulos e na quantidade de cinzas conforme a distância percorrida pela ração e, conforme há o aumento do tamanho de grânulos, ocorre redução no teor de cinzas. Conclui-se que há segregação da ração durante a distribuição ao longo da linha, sendo que há acúmulo de matéria mineral nos primeiros pratos e este teor diminui conforme a distribuição.Palavras-chave: matéria mineral, tamanho de partícula, segregação.

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Section: Resultssupporting

confidence: 86%

Feed Ration Homogeneity During Distribution of Broilers’ Automatic Feeders

Cardinal¹,

Vale²,

Alonço³

et al. 2014

Revista Brasileira De Engenharia De Biossistemas

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“…Growth of body weight compensation as early as in the 6 th week of life suggests that the turkeys adapted fast to the new structure of the feed mixture. Similar responses of birds to changes in granule size were observed by Yo, et al (1997) and Chagneau, et al (2006). In experiments conducted by those authors, the birds were also negatively responding to a rapid changes in feed mixture structure, yet the situation usually improved as soon as after 3 days.…”

Section: Resultssupporting

confidence: 67%

Comparsion of production performance of two genetic groups of turkeys reared in the Semi-intensive system

Damaziak¹,

Michalczuk²,

Kurek³

2012

JCEA

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Production results were compared for two groups of turkeys reared in semi-intensive system. The material included 40 primitive turkeys of the light type and 40 heavy hybrids of the Big-6 line (commercial flock). Females was raised to 14 and males to 22 weeks of life. During the rearing, body weight (g) was controlled individually and feed intake (g) was monitored in groups, in weekly intervals. Significantly higher body weight values (P ≤ 0.01) were reported in both females (8806 g) and males Big-6 (23593 g), compared to primitive turkeys (2418 g and 6589 g, respectively). Big-6 turkeys were also characterized by a faster growth rate. This group compared to primitive turkeys showed also a higher feed intake and lower FCR values. Losses control of the turkeys throughout the rearing period showed a 17.5% increase in the survival rate in the group of primitive turkeys.

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“…Whole grains can be used in three ways: (i) 'choice feeding', in which the whole cereal and the protein-rich complement (pelleted or as whole grains) are given in two separate feeders (Pousga et al, 2005); (ii) 'sequential' feeding, in which the whole cereal and the protein-rich complement are given in the same feeder but at different times of day (Bouvarel et al, 2008;Umar Faruk et al, 2010); and (iii) as a 'loose mixture', in which the whole cereal and the proteinrich complement are mixed in the same feeder (Yo et al, 1997). The loose mixture is a solution easier to implement (Forbes and Covasa, 1995).…”

Section: Introductionmentioning

confidence: 99%

Influence of feeding sorghum on the growth, gizzard development and carcass traits of growing geese

Arroyo

Auvergne

Dubois³

et al. 2012

animal

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The aim of this trial was to study the influence of feed form on the performance, gizzard development and carcass traits of growing geese. Between 42 and 98 days of age, 360 geese (type Maxipalm R ) were fed a diet containing 500 g sorghum/kg (nitrogen-corrected apparent metabolizable energy 12.6 MJ/kg, 15.1 g/kg CP). Birds were divided into three groups differing in feed form: complete pellets (Control group, n 5 120); a coarse-ground meal (CG group, n 5 120); or a mixture containing protein-rich pellets and sorghum whole grains (M group, n 5 120). Feed intake per pen (40 birds/pen) was measured weekly between 42 and 98 days of age, and individual live weight (LW) was measured every 2 weeks. At 84 and 98 days of age, 12 birds were slaughtered in each group to measure the gizzard development and body traits. Irrespective of the goose sex, LW at 98 days was lower for the CG group than for the Control group (5555 v. 5888 g, P , 0.05 for males and 5039 v. 5215 g, P , 0.05 for females). The feed intake over the entire period was 5.5% higher in the M group (P , 0.05) than in the Control and CG groups but the feed conversion ratio (6.91, P . 0.05) was similar in the three groups. The gizzard development (as % of LW) was higher in birds of the CG group than those of the Control and M groups at 84 days of age (113.98% and 113.51%, respectively; P , 0.05) but was similar in all three groups at 98 days of age (4.01%, P . 0.05). The relative liver development was lower in the birds of the CG group than those of the other two groups at 84 and 98 days of age (220%, P , 0.001 and 210%, P , 0.05, respectively). The other body traits were similar in the three groups at both 84 and 98 days of age. The present results suggest that a simplified diet presented in the form of a mixture of sorghum whole grains and protein-rich pellets did not reduce the performance of growing geese.

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Self-selection of dietary protein and energy by broilers grown under a tropical climate: effect of feed particle size on the feed choice

Cited by 40 publications

References 18 publications

Feed Ration Homogeneity During Distribution of Broilers’ Automatic Feeders

Feed Ration Homogeneity During Distribution of Broilers’ Automatic Feeders

Comparsion of production performance of two genetic groups of turkeys reared in the Semi-intensive system

Influence of feeding sorghum on the growth, gizzard development and carcass traits of growing geese

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