Influence of early quantitative food restriction on long bone growth at different environmental temperatures in broiler chickens

Bruno, Luís Daniel Giusti; Furlan, Renato Luís; Malheiros, Euclides Braga; Macari, Marcos

doi:10.1080/713654955

Cited by 43 publications

(32 citation statements)

References 13 publications

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“…These birds presented lower femur width, tibia and femur weight, tibia length, femur and tibia mineral content and area, and tibia shaft values. These results are consistent with the findings of Bruno et al (2000), who reported that CV: variation coeffecient. a-b: means followed by different letters in columns differ significantly by Tukey test at 5% probability.…”

Section: Effect Of In-ovo Ascorbic Acid Injection On the Bone Developsupporting

confidence: 83%

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Effect of In-Ovo Ascorbic Acid Injection on the Bone Development of Broiler Chickens Submitted to Heat Stress During Incubation and Rearing

Sgavioli

Domingues

Santos

et al. 2016

Rev. Bras. Cienc. Avic.

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Ash, mineral density, femoral bone strength, tibia, vitamin C. ABSTRACTThis experiment was conducted to evaluate the effect of in-ovo ascorbic acid (AA) injection on the bone development of broilers submitted to heat stress during incubation and rearing. One thousand (1,000) Cobb ® fertile broiler eggs were randomly distributed according to the weight into five incubators, with 200 eggs per incubator. The incubation treatments were: eggs not injected with AA and incubated at 37.5°C; eggs not injected with AA and incubated at 39°C; and eggs injected with 6 µg AA/100 µL water prior to incubation and incubated at 39ºC. The hatched birds were reared at three different house temperatures: cold, thermoneutral, or and hot. The high incubation temperature negatively influenced broilers' bone characteristics. The femur of the birds hatched from eggs incubated at 39°C and injected with AA presented lower shaft mineral density, lower maximum force and lower elongation at maximum force. Their tibia presented reduced mineral density at the proximal and distal epiphysis. In-ovo AA injection of eggs incubated at high temperature did not minimize the negative effects of high rearing temperature on the performance andbone development of broiler chickens reared until 42 days of age.

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Section: Effect Of In-ovo Ascorbic Acid Injection On the Bone Developsupporting

confidence: 83%

“…Fast-growing chickens, i.e., genetically-improved broilers breeds, produce high metabolic heat and may not be able to maintain normothermia under hot environmental conditions (Bruno et al, 2000). The resulting heat stress can negatively affect bone development in these broilers breeds.…”

Section: Introductionmentioning

confidence: 99%

Effect of In-Ovo Ascorbic Acid Injection on the Bone Development of Broiler Chickens Submitted to Heat Stress During Incubation and Rearing

Sgavioli

Domingues

Santos

et al. 2016

Rev. Bras. Cienc. Avic.

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“…Shank width, tibia weight, breaking strength and tibia proximal epiphysis ash in the meal-feeding group was lower compared to the control group on day 21. The effect of restriction on linear bone growth seems to be associated with chondrocyte activity (Bruno et al, 2000), as Heinrichs et al (1997) determined that a rapid depletion of growth plate chondrocytes and inhibition of longitudinal bone growth occur in food-restricted rabbits. Also our findings (at 21 days) are in agreement with earlier studies, which showed that food restriction could adversely affect bone formation in chicks (Bruno et al, 2000) and rats (Fetoui et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

“…On the contrary, Su et al (1999) reported that birds fed fewer meals per day had better walking ability. Bruno et al (2000) noted that bone length and width reduced when feed was restricted to 40% of ad libitum intake in broiler from 7 to 14 days.…”

Section: Introductionmentioning

confidence: 99%

Effects of meal-time feeding and protein restriction on walking ability and some bone and carcass properties in broilers

Konca

Yaylak

Önenç

2008

Animal

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This experiment was designed to investigate the effects of meal-time feeding and protein restriction on performance, gait score (GS) and carcass and bone traits in broilers. A total of 420 1-day-old chicks were wing banded and randomly distributed into 21 pens with 20 chicks each. At 7 days of age, chicks were weighed and randomly assigned to one of the three treatments: (1) control (C) feed (23.02% crude protein (CP)) was available ad libitum; (2) meal-time feeding (MF); control feed was available from 0100 to 0900 h and from 1500 to 2300 h. Food was withdrawn from 0900 to 1500 h and whole wheat (10 g/bird per day) was dispersed on the floor from 7 to 21 days; and (3) low-protein (LP) diet (19.71% CP) was fed to the chicks from 7 to 21 days. All of the groups were fed ad libitum from 1 to 7 days of age and from 21 to 45 days of age with a standard commercial diet. Individual body weight was measured on days 7, 21 and 45. Feed consumption was measured from 7 to 21 days and from 21 to 45 days. Forty-two chicks were humanly slaughtered and eviscerated for bone evaluation, on days 21 and 45. Also carcass characteristics were determined on day 45. Control group body weight was significantly higher (P , 0.05) at 21 and 45 days of age than the MF and LP groups, which did not differ. Feed intake was reduced by meal-time feeding and LP diet (P , 0.01). Feed efficiency was the best in the MF group during the period of 21 to 45 days of age (P , 0.01). In the control group, shank was significantly longer than that of the LP group and tibia breaking strength was higher than that of the MF group at 21 days (P , 0.05). However, shank width, tibia wet weight and tibia mid-diaphysis ash percentage of the MF group were significantly lower than those of the C and LP groups at 21 days of age (P , 0.05). GS, shank and carcass and tibia bone traits on day 45 were not significant among groups. No compensatory growth and walking ability improvement were observed at 45 days of age for broilers fed with MF and LP between 7 and 21 days of age.

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“…Além destas diferenças genéticas, outros fatores podem influenciar o desenvolvimento ósseo das aves, tais como: idade, sexo, manejo, nutrição, temperatura (COOK, 2000;EDWARDS JUNIOR, 2000;BRUNO et al, 2000;BIZERAY et al, 2002, BRUNO et al, 2007.…”

Section: Introductionunclassified

Efeito da densidade de criação e do grupo genético sobre a composição mineral e desenvolvimento de ossos longos de frangos de corte

et al. 2014

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ResumoO objetivo do trabalho foi avaliar a composição mineral, volume, resistência e densidade óptica radiográfica dos ossos longos (úmero, tíbia e fêmur) de frangos de corte de três grupos genéticos e duas densidades de alojamento. O delineamento experimental utilizado foi inteiramente casualizado em um esquema fatorial 3 x 2, em parcelas subdivididas, sendo os fatores principais os três grupos genéticos (Isa Label JA57, Ross 308 e Hybro PG) e as duas densidades de alojamento (10 e 16 aves/ m 2 ), e as subparcelas as idades de coleta dos ossos (7 semanas), totalizando deste modo seis tratamentos com cinco repetições cada um num total de 30 unidades experimentais. Os resultados deste trabalho apontaram que não houve diferenças significativas para as características avaliadas com exceção da resistência da tíbia para o grupo Isa Label JA57. O volume ósseo apresentou-se crescente com a idade da ave; já a resistência à quebra e densidade óptica radiográfica para a maioria dos tratamentos avaliados decresceram dos 28 aos 35 dias. O teor de minerais dos ossos avaliados para todos os tratamentos mostrou-se crescente nas três primeiras semanas, decrescendo no final do período experimental. O modelo de desenvolvimento ósseo foi o mesmo para todos os grupos genéticos, apesar da densidade de criação adotada, mostrando que os frangos de corte possuem uma curva padrão de crescimento ósseo, que não é afetada pelo grupo genético ou pela densidade de criação. Palavras-chave: Desenvolvimento, fêmur, frangos de corte, tíbia, úmero AbstractThe objective of this experiment was to evaluate the mineral composition, volume, bone breaking strenght and optical radiographic density of long bones (humerus, tibia and fêmur) of broiler chickens from three genetic groups and two rearing densities. The experimental design was a splitj-splot where the

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Influence of early quantitative food restriction on long bone growth at different environmental temperatures in broiler chickens

Cited by 43 publications

References 13 publications

Effect of In-Ovo Ascorbic Acid Injection on the Bone Development of Broiler Chickens Submitted to Heat Stress During Incubation and Rearing

Effect of In-Ovo Ascorbic Acid Injection on the Bone Development of Broiler Chickens Submitted to Heat Stress During Incubation and Rearing

Effects of meal-time feeding and protein restriction on walking ability and some bone and carcass properties in broilers

Efeito da densidade de criação e do grupo genético sobre a composição mineral e desenvolvimento de ossos longos de frangos de corte

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