Effects of Early Quantitative Feed Restriction on Live Performance and Carcass Composition of Male Broilers Grown for Further Processing

Saleh, E. A.; Watkins, S. E.; Waldroup, A. L.; Waldroup, P. W.

doi:10.1093/japr/14.1.87

Cited by 69 publications

(73 citation statements)

References 24 publications

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“…Dietary energy content influences the intake of all other nutrients; however, broilers display an exceptional ability to control their energy intake by regulating their feed intake as diet energy concentration changes (Lopez and Leeson, 2008). Saleh et al (2004) reported that decreasing the amount of energy in the diet decreases growth rate and feed efficiency, however their experiment involved a wider range of ME (270 kcal/kg) as compared to this study (75 kcal/kg). However, in this trial ME content of the diet was changed in small increments (25 kcal/kg).…”

Section: Control Groupcontrasting

confidence: 53%

The Relationship Between Guanidino Acetic Acid and Metabolisable Energy Level of Diets on Performance of Broiler Chickens

Abudabos

Saleh²,

Lemme

et al. 2014

Italian Journal of Animal Science

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This work aimed to investigate the effects on performance and carcass characteristics of broiler chickens of 2 levels of guanidino acetic acid (GAA) in a commercial form (CreAMINO ® ) and 4 levels of metabolisable energy. The eight dietary regimens were tested for starter (0-10 d), grower (11-22 d) and finisher (23-35 d) periods on a total of 200 male ROSS 308 broiler chickens in a factorial arrangements of treatments (2 4), with experimental diet fed to 5 replicate pens with 4 birds each. The results revealed a positive effect for CreAMINO ® supplementation on feed conversion ratio (FCR) for the starter, grower, finisher and cumulative periods (P<0.05, 0.05, 0.01 and 0.001, respectively); feed conversion was significantly improved in the treatment with CreAMINO ® supplementation vs unsupplemented group. During the grower period, a significant difference in FCR was observed for metabolisable energy (ME) level (P<0.01). When examining the cumulative period of the trial (0 to 35 days of age), two-way interaction was significant for feed intake and body weight gain. Birds receiving the control level of energy, 75 or 50 kcal/kg lower ME than the control, consumed less feed when supplemented with CreAMINO ® . Birds receiving 25 kcal/kg lower ME or the control energy levels gained more weight when supplemented with CreAMINO ® . In summary, GAA (as CreAMINO) improved FCR of broilers in each period as well as cumulatively, while ME level also affected FCR. CreAMINO ® supplementation to reduced-energy diets showed FCR improvements, while the best performance was detected for the diet with 50 kcal/kg lower ME.

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Section: Control Groupcontrasting

confidence: 53%

The Relationship Between Guanidino Acetic Acid and Metabolisable Energy Level of Diets on Performance of Broiler Chickens

Abudabos

Saleh²,

Lemme

et al. 2014

Italian Journal of Animal Science

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“…Feed restriction is classified into two forms including a quantitative feed restriction where the birds' access to the feed physically declines during certain times of the day and a qualitative feed restriction, where birds' full access to particular nutrients decreased through the provision of a feed diluted with inert fibres (Fanooci & Turki 2010). According to the previous investigations, the response of the bird to a feed restriction programme is related to feeding strategies (Urdaneta-Rincon & Leeson 2002), severity of restriction (Lippens et al 2009) and genetic make-up (Saleh et al 2005). Therefore, usage of an appropriate method of feed restriction for broilers is difficult (Lippens et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Intermittent feeding programme and addition of <i>Bacillus subtilis</i> based probiotics to the diet of growing broiler chickens: Influence on growth, hepatic enzymes and serum lipid metabolites profile

et al. 2013

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This study was conducted to examine the effects of Intermittent feeding programme (IFP) and Bacillus subtilis-based probiotic (BSP) addition in diet on liver malic enzyme and isocitrate dehydrogenase activity, lipid metabolism and performance in broiler chickens. Five hundred and four one-day old male broiler chicks were randomly allocated in four experimental treatments (T1, T2, T3 and T4). Groups T1 (control diet) and T3 (Bacillus subtilis-based probiotic diet) were fed ad libitum, whereas groups T2 (control diet) and T4 (Bacillus subtilis-based probiotic diet) served as IFP from day 8 to the end of the experiment. The data on initial body weight, weekly feed consumption and body weight gain were recorded up to six weeks of age. Carcass composition, blood parameters and hepatic enzyme activity were measured at the end of the experiment. Although body weight gain was not significantly different among any of the treatments, the birds raised under IFP consumed significantly (P<0.05) lower feed (207 g) and utilized their feed more efficiently (1.78) than those of the control group fed ad libitum (1.84). Carcass weight as a percentage of live weight was not affected by probiotic supplementation on the diet, but IFP significantly reduced (P<0.05) broiler carcass weight. However, the liver malic and isocitrate dehydrogenase enzyme activity was not significantly different between IFP and BSP groups. 411Archiv Tierzucht 56 (2013) 40, 410-422 BSP may influence the pathway of fat metabolism through promotion and/or suppression of serum lipid metabolites.

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“…Dietary energy content is the most important item in broiler feed formulation, and makes up 70% of the total diet (Guevara, 2004;Saleh et al, 2004). Therefore, this study aimed at understanding and determining the optimal energy content required to accelerate broiler growth, without, however, compromising maximum economic return.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the performance of males fed on female diets is reduced, also leading to economic losses. In addition, considering carcass quality, the ratio between energy and nutrients must be maintained constant so that body composition does not change as body weight increases, thereby maintaining carcass quality (Saleh et al, 2004;Cerrate & Waldroup, 2009a;2009b). That is the reason why the model "energy to nutrient" ratio is considered the best method for nonlinear feed formulation (Cerrate & Waldroup, 2009a;2009b), and also because metabolizable energy is the main factor that affects feed intake, inducing an increase or reduction of the intake of the other nutrients (Leeson et al, 1996).…”

Section: Accuracy Of Nonlinear Formulation Of Broiler Diets: Maximizimentioning

confidence: 99%

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Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits

Gonçalves¹,

Almeida²,

Faria-Júnior

et al. 2015

Rev. Bras. Cienc. Avic.

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Nutritionists need to make commercial decisions about the optimal nutrient content broiler feeds. In order to demonstrate that broiler prices may influence dietary nutrient density, this study developed quadratic feed intake and weight gain equations, according to broiler sex and feeding phase, to be applied in a nonlinear feed formulation model. Four hundred and eighty Cobb broilers were allotted to a completely randomized experimental with six treatments, each with four replicates of 10 birds each, from 1 to 56 days old. Treatments consisted of diets containing 2800, 2900, 3000, 3100, 3200, or 3300 kcal metabolizable energy (ME)/kg and constant nutrient to ME ratio. A nonlinear version of the PPFR feed formulation software (http://www.fmva.unesp.br/ ppfr) was developed with the objective of optimizing energy density and bird performance. According to the results, when the models are applied in the PPFR nonlinear spreadsheet, the most favorable nutrient density content is defined by mathematical models, as optimized by the Excel Solver tool by means of cost/benefit comparisons and as a function of rearing phase (starter, grower, and finisher) and sex. This contradicts the recommendations of genetic company manuals and published requirement tables, whose goal is to maximize weight gain and do not necessarily guarantee maximum economic efficiency.

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Effects of Early Quantitative Feed Restriction on Live Performance and Carcass Composition of Male Broilers Grown for Further Processing

Cited by 69 publications

References 24 publications

The Relationship Between Guanidino Acetic Acid and Metabolisable Energy Level of Diets on Performance of Broiler Chickens

The Relationship Between Guanidino Acetic Acid and Metabolisable Energy Level of Diets on Performance of Broiler Chickens

Intermittent feeding programme and addition of <i>Bacillus subtilis</i> based probiotics to the diet of growing broiler chickens: Influence on growth, hepatic enzymes and serum lipid metabolites profile

Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits

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Effects of Early Quantitative Feed Restriction on Live Performance and Carcass Composition of Male Broilers Grown for Further Processing

Cited by 69 publications

References 24 publications

The Relationship Between Guanidino Acetic Acid and Metabolisable Energy Level of Diets on Performance of Broiler Chickens

The Relationship Between Guanidino Acetic Acid and Metabolisable Energy Level of Diets on Performance of Broiler Chickens

Intermittent feeding programme and addition of &lt;i&gt;Bacillus subtilis&lt;/i&gt; based probiotics to the diet of growing broiler chickens: Influence on growth, hepatic enzymes and serum lipid metabolites profile

Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits

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Product

Resources

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Intermittent feeding programme and addition of <i>Bacillus subtilis</i> based probiotics to the diet of growing broiler chickens: Influence on growth, hepatic enzymes and serum lipid metabolites profile