Effects of different nutritional plans on broiler performance

Buteri, Charles Bernardo; Tavernari, F. de C.; Lelis, Guilherme Rodrigues; Rostagno, Horácio Santiago; Albino, L. F. T.

doi:10.1590/s1516-635x2009000400003

Cited by 6 publications

(5 citation statements)

References 8 publications

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“…Currently, broilers are traditionally managed with feeding programs that often consist of three or four phases. As a consequence, during most of the growth period birds will, necessarily be provided with higher, or lower amounts of nutrients than their actual requirements (Buteri et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Multiphase feeding program for broilers can replace traditional system

Hauschild

Bueno

Remus

et al. 2015

Sci. agric. (Piracicaba, Braz.)

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Broilers are traditionally managed with feeding programs that often consist of three or four phases. In this study we investigated whether a multiphase feeding program (14 phases) of broilers based on the optimal mix of two feeds could replace a traditional four phase system while maintaining broiler performance. To evaluate this prposed program we measured variables of performance, carcass yield, and nitrogen excretion. In addition, we determined if the multiphase feeding program (14 phases) would be equally effective regardless of bird gender. A total of 480 day-old Cobb chicks were used, with an average weight of 44.74 ± 0.16 g (females) and 44.71 ± 0.11 g (males). The birds were distributed in a completely randomized 2 × 2 factorial design. Each treatment consisted of six replicates with 20 animals per experimental unit. Results were analyzed separately in two periods (1-21 and 22-42 days) as determined by slaughter date, as well as for the entire growth period (1-42 days). The multiphase program led to improvements in final body weight and average daily weight gain, in addition to an increase in breast yield.

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Section: Introductionmentioning

confidence: 99%

Multiphase feeding program for broilers can replace traditional system

Hauschild

Bueno

Remus

et al. 2015

Sci. agric. (Piracicaba, Braz.)

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“…In some studies, it is observed that the converged parameters accurately describe the data set. However, the Cm/Wm ratio of the chemical composition at maturity estimate values that are not consistent with the observed values, especially for lipid content (NEME et al, 2006) and protein content in the body (BUTERI et al, 2009), which are the main body components that determine the energy and nutrient requirements for amino acids. Despite its importance, this hypothesis has not been demonstrated or discussed in the literature and the reasons relating such inconsistencies were not presented.…”

Section: Introductionmentioning

confidence: 62%

Adjustment of growth parameters for the major body components of pullets

Silva

Sakomura

Dorigam

et al. 2016

Revista Ciência Agronômica

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The purpose of this research was analyze the fit of Gompertz function with or without fixing some of the parameters to describe body growth and major bodily chemical constituents of growing pullets. Weekly, data of body weight and chemical components of body free of feathers and feathers were collected from 1,200 chicks of four laying strains (Hisex Brown, Hisex White, Hy Line Brown and Hy Line White W36) until 18 weeks of age. The variables were subjected to two adjustments fixing, or not, some parameters of Gompertz function. The allometric model parameters were calculated for the chemical components. The lipid and protein composition of the body free of feathers were the components with the biggest change in the last weeks. Moreover, the chemical composition of the feather showed small variation. The parameters of the Gompertz function assumed values according to the employed adjustment, especially for protein and fat of the body free of feathers carcass. The adjustment of the Gompertz function by fixing the two parameters allowed coherence and biological significance. The allometric coefficients indicate that as the protein weight increased, the proportion of fat increased and the proportion of water and ashes in the body decreased. The fit of the model allows setting the parameters with consistency and biological significance without losing accuracy in the estimates.

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“…The obtained results, according to which male chickens reacted differently than female chickens, can relate to different nutrient requirements of broilers, depending of sex. Different reactions of sexes to phase feeding programmes were determined by Buteri et al (2009). These authors studied the effects of different multi-phase feeding programmes on male and female chickens of Ross 308 provenience, including programmes with three, five and 28 mashes.…”

Section: Resultsmentioning

confidence: 99%

Effect of multi-phase feeding on growth, main carcass parts, and nitrogen content in faeces of broiler chickens

Толимир¹,

Perić

Milošević

et al. 2013

BIOTEC ANIM HUSB

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The objective of this paper is to investigate the effect of multiphase feeding, i.e. the effect of different mash feeds with multi-phase protein reduction, on growth, main carcass parts and nitrogen content in faeces of broiler chickens. The experiment was conducted on 1216 chickens of Ross 308 provenience, separated by sex. The experiment lasted for 42 days and the standard technology was used. The groups differed in a type of a mash (treatment) given in the starter period, as follows: T1 (control group) was given a mash with 23% crude proteins from day 1 to day 21; T2-a mash with 23% proteins from day 1 to day 7, followed by a mash with 21.5% proteins given from day 7 to day 21; T3-a mash with 23% proteins from day 1 to day 14, followed by a mash with 21.5% proteins given from day 14 to day 21; T4-mashes changed every three days, having 23%, 22.55%, 22.10%, 21.65% , 21.20%, 20.75% and 20.30% of crude proteins, respectively. Slaughtering performance was investigated on a total of 64 broiler chickens, with eight male and eight female chickens used separately for each of the treatments. Nitrogen content in faeces was determined using the pooled sample of faeces. The obtained results showed some differences in the average daily growth of the male and female chickens when comparing the control (T1) and the experimental groups. Those differences were not statistically significant. However, when comparing the male-only groups, it was determined that the experimental group T4 had statistically significantly higher growth than T2 and T3 group. The effect of the multi-phase feeding programme on the breast, thigh and drumstick share of both male and female broilers was not significant. The applied multi-phase feeding programmes resulted in a reduction in the nitrogen content in the faeces. Considering the obtained results, it can be concluded that the multi-phase feeding programmes had no negative effect on the growth and slaughtering performances N. Tolimir et al. 484 of broilers. This goes in favour of these programmes, since they can result in some positive economic and environmental effects of production.

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Effects of different nutritional plans on broiler performance

Cited by 6 publications

References 8 publications

Multiphase feeding program for broilers can replace traditional system

Multiphase feeding program for broilers can replace traditional system

Adjustment of growth parameters for the major body components of pullets

Effect of multi-phase feeding on growth, main carcass parts, and nitrogen content in faeces of broiler chickens

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