Effect of Diet Dilution in the Starter Period 
 on Performance and Carcass Characteristics of Broiler Chicks

Teimouri, Arezou; Rezaei, Mansour; Pourreza, J.; Sayyahzadeh, H.; Waldroup, P. W.

doi:10.3923/ijps.2005.1006.1011

Cited by 19 publications

(1 citation statement)

References 22 publications

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“…Feed consumption was nearly the same between birds fed diet with different ND levels. These results are consistent with the reports of some researchers (Sahraei & Shariatmadari, 2007) and in disagreement with the findings of other researchers (Ghazanfari et al, 2010;Teimouri et al, 2005). In modern high-performance broiler chickens, the volume of GIT is the main factor limiting the amount of feed consumption.…”

Section: Growth Performancesupporting

confidence: 85%

Effects of finisher diet nutrients density and slaughter age on energy and protein efficiency, productive and economic performance and meat quality of broilers

Nikbakhtzade,

Zarghi,

Golian

2024

Veterinary Medicine & Sci

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BackgroundThe current broilers have been greatly optimized for weight gain and breast yield, which necessitates the provision of nutrients‐dense diets for maximum potential.ObjectivesThe current study aimed to evaluate the effect of finisher diet nutrients density (ND) on energy and protein efficiency, productive and economic performance and breast meat quality of broilers raised until different slaughter age.MethodsA total of 600 23‐day‐old broiler male chicks (Cobb‐500) were assigned to 10 treatments with six replicates and 10 birds each. Experimental treatments were included factorial arrangement of five increment (2.5%) levels of finisher diet ND (92.5%, 95%, 97.5%, 100% and 102.5% as strain recommendation) and slaughtered at 38 or 46 days of age. The relative difference in the energy level of experimental diets was used to increase ND levels at the same ratio.ResultsFeed intake (FI) and breast meat quality traits exception water holding capacity (WHC) were not affected by finisher diet ND. In response to increasing finisher diet ND, energy and protein efficiency, productive traits, bio‐economic index (BEI) and breast relative weight (BRW) linearly improved. However, residual feed intake and breast meat WHC improved with a quadratic trend. By using broken‐line regression analysis, the optimum dietary ND was obtained at 97.5%–102% of strain recommendation. Energy and protein efficiency, feed conversion ratio and BEI deteriorated by prolonging rearing period. The BRW, meat lightness (L*), redness (a*), hue angle (h*) and WHC values for the birds slaughtered at 46 days of age were significantly higher, and cooking loss was lower than those slaughtered at 38 days old.ConclusionsBroilers during the finisher period are not able to regulate their FIs with diet ND. The energy and protein efficiency, productive and economic performance were reduced when broilers were fed diluted diet or the rearing period was prolonged.

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Section: Growth Performancesupporting

confidence: 85%

Effects of finisher diet nutrients density and slaughter age on energy and protein efficiency, productive and economic performance and meat quality of broilers

Nikbakhtzade,

Zarghi,

Golian

2024

Veterinary Medicine & Sci

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Effect of quantitative feed restriction on broiler performance

Khetani

Nkukwana

Chimonyo

et al. 2008

Trop Anim Health Prod

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The objective of the current study was to determine the effect of quantitative feed restriction on the performance of broilers. A total of 270 unsexed broilers were randomly allocated to three treatments: with no feed restriction (T1), one week (T2) and two (T3) weeks of feed restriction from 22 days of age and then fed ad libitum until the age of 42 days. Treatments were replicated three times with 30 birds per replicate. Birds were fed with starter, grower and finisher diets. The feed consumed and body weights were recorded every week from the third to the sixth week. The average daily gain (ADG), average daily feed intake (ADFI) and the feed conversion ratio (FCR) were computed for each week. At Week 6, body weights of T3 birds were similar (P>0.05) to those of T1 and T2 birds. There were also no treatment effects on the ADG at Week 6. In addition, no treatment effects (P>0.05) were observed on ADFI at each stage of growth. Since ADFI and FCR were similar among the three groups, it was concluded that feed restriction by limiting the time to eat was not successful. There was also no evidence of compensatory growth in the restricted groups.

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Effects of physical form of diet and intensity and duration of feed restriction on the growth performance, blood variables, microbial flora, immunity, and carcass and organ characteristics of broiler chickens

et al. 2015

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Effect of Diet Dilution in the Starter Period on Performance and Carcass Characteristics of Broiler Chicks

Cited by 19 publications

References 22 publications

Effects of finisher diet nutrients density and slaughter age on energy and protein efficiency, productive and economic performance and meat quality of broilers

Effects of finisher diet nutrients density and slaughter age on energy and protein efficiency, productive and economic performance and meat quality of broilers

Effect of quantitative feed restriction on broiler performance

Effects of physical form of diet and intensity and duration of feed restriction on the growth performance, blood variables, microbial flora, immunity, and carcass and organ characteristics of broiler chickens

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