Performance, growth and carcass characteristics of alternatives lineages of broiler chickens created with access to paddock

Tavares, Fernando Barbosa; Santos, Maria do Socorro Vieira dos; Araújo, Cláudio Vieira de; Costa, Heiciane Soares da; Loureiro, João Paulo Borges de; Lima, Elizanne de Moura; Lima, Kedson Raul de Souza

doi:10.1590/s1519-99402015000200016

Cited by 9 publications

(8 citation statements)

References 11 publications

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“…The current finding was agreed with earlier reports [21] feed conversion ratio of the chicken. The present study of feed conversion ratio was also a similar observation with the report [24,22,15].…”

Section: Feed Conversion Ratiosupporting

confidence: 93%

“…The chemical composition of the ingredients is depending on the maturity level, harvesting season, soil type and part of the ingredients to be used [13,14]. In the current study, crude protein and energy content of least-cost ration is the lower amount [15]. However, crude protein and energy of the current study had similar observations with the effect of the exogenous enzyme with diet on broiler performance study [16,17].…”

Section: Composition Of Homemade Rationmentioning

confidence: 50%

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Effects of Least Cost Homemade Ration on Growth Performance of Sasso and Indigenous Breeds of Chicks

Gulilat¹,

Tegegne²,

Demeke³

2021

Preprint

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The objective of this study was to develop the least-cost starter’s diet and evaluated its effect on the growth performance of Sasso breeds and Indigenous ecotype of chicks under the local condition of the South Gondar Zone. The effects of substitution of different levels of commercial starters ration with homemade diet on the growth performance of Sasso and Indigenous chicks were studied in Hiruy Abaregay village of Farta district. The research area is 586km distant from the capital city of Addis Ababa, Ethiopia. A total of 510 Sasso T-44 and 90 Indigenous local ecotypes day-old chicks were randomly divided into five groups, each with 102 and 18 chicks, respectively. These were assigned into five treatments in which 100 (T1), 75 (T2), 50 (T3), 25 (T4), and 0% (T5) of commercial starter’s diet in factorial completely randomized design (CRD) with 3 replications for 60 days feeding period. The results obtained indicated that increased levels of substitution of a commercial diet with a homemade diet significantly depressed (p<0.001) mean daily feed consumption and retention of dry matter, nitrogen, and metabolizable energy. Growth rate as measured by mean daily weight gain, mean final body weight, and total feed consumption and feed cost were significantly miserable (p<0.001) in an increased homemade diet. On the contrary, there was an increase in feed conversion ratio and fiber content in high-level dilution of starter’s commercial diet with a homemade diet. However, the groups of chicks on 0, 25, and 50% commercial starters diets replaced by homemade diet were significantly higher (p<0.001) in mean daily feed intake, daily weight gain, feed conversion ratio, and final body weight attained. The results of this study indicated that up to 50% of expensive commercial starter’s diet could economically be replaced with the least cost homemade diet without adversely affecting the growth performance of chicks.

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Section: Feed Conversion Ratiosupporting

confidence: 93%

Section: Composition Of Homemade Rationmentioning

confidence: 50%

Effects of Least Cost Homemade Ration on Growth Performance of Sasso and Indigenous Breeds of Chicks

Gulilat¹,

Tegegne²,

Demeke³

2021

Preprint

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“…We found no published studies that tested alternative ingredients for feed of slow-growth broilers in the initial phase up to 28 days, in which the birds remain confined without access to the picket. The vast majority of studies evaluate birds in the later growth phase, when breeding takes place semiextensively with free access to the picket for a large portion of the day until slaughter (Santos et al 2014;Veloso et al 2014;Tavares et al 2015). From a productivity point of view, ASB inclusion did not significantly affect weight gain and viability of the broilers in relation to the control, and the feed with 10% ASB inclusion resulted in significantly lower feed intake and lower feed conversion rate in relation to feed with 6% ASB.…”

Section: Parametersmentioning

confidence: 99%

“…However, the better taste, firmer texture and more pronounced color of slowgrowth broiler meat make it a promising niche-market product (Nahashon et al 2010;Morais et al 2015). The late slaughter age of slow-growth broilers results in higher production costs, which makes it desirable to seek alternative ingredients for feed that reduce costs without compromising poultry performance ACTA AMAZONICA (Camelo et al 2015;Tavares et al 2015). Several studies have tested the efficacy of agroindustrial byproducts for this purpose (Sousa et al 2012;Delgado et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Açaí seed bran in the feed of slow-growth broilers

et al. 2018

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The aim of this study was to analyze the potential use of açaí seeds as an alternative ingredient in the feed of slow-growth broilers until 28 days of age. We carried out a bromatological analysis of fractions of the açaí fruit. The açaí seed without mesocarp was the best choice for formulation of the açaí seed bran (ASB), which was evaluated in terms of bird performance and economic viability of the supplemented feed. A total of 416 male chicks of the French Red-Naked Neck lineage were used in a completely randomized design with four treatments (0, 2, 6 and 10% inclusion of ASBin the feed) with eight replicates each. The results indicated that ASB can be included in proportions of up to 10% in the diet of slow growth broilers at early development stage without impairing performance. The 10% inclusion level also was economically equal to the control treatment, representing a viable alternative for broiler production, with potential for reduction of the negative impacts generated by açaí residue in the environment.

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“…Although colour has been confused with illuminance in many trials, wavelength has been reported to have an unquestionable effect on poultry production, behaviour and welfare (Lewis and Morris, 2000;Tavares et al, 2015). Light distribution, duration, and intensity have a direct effect on flock performance and welfare (Adamczuk et al, 2014).…”

Section: Fearmentioning

confidence: 99%

Slaughter of animals: poultry

Nielsen¹,

Álvarez²,

Bicout³

et al. 2019

EFS2

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The killing of poultry for human consumption (slaughtering) can take place in a slaughterhouse or during on-farm slaughter. The processes of slaughtering that were assessed, from the arrival of birds in containers until their death, were grouped into three main phases: pre-stunning (including arrival, unloading of containers from the truck, lairage, handling/removing of birds from containers); stunning (including restraint); and bleeding (including bleeding following stunning and bleeding during slaughter without stunning). Stunning methods were grouped into three categories: electrical, controlled modified atmosphere and mechanical. In total, 35 hazards were identified and characterised, most of them related to stunning and bleeding. Staff were identified as the origin of 29 hazards, and 28 hazards were attributed to the lack of appropriate skill sets needed to perform tasks or to fatigue. Corrective and preventive measures were assessed: measures to correct hazards were identified for 11 hazards, with management shown to have a crucial role in prevention. Ten welfare consequences, the birds can be exposed to during slaughter, were identified: consciousness, heat stress, cold stress, prolonged thirst, prolonged hunger, restriction of movements, pain, fear, distress and respiratory distress. Welfare consequences and relevant animal-based measures were described. Outcome tables linking hazards, welfare consequences, animal-based measures, origins, and preventive and corrective measures were developed for each process. Mitigation measures to minimise welfare consequences were also proposed.

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Performance, growth and carcass characteristics of alternatives lineages of broiler chickens created with access to paddock

Cited by 9 publications

References 11 publications

Effects of Least Cost Homemade Ration on Growth Performance of Sasso and Indigenous Breeds of Chicks

Effects of Least Cost Homemade Ration on Growth Performance of Sasso and Indigenous Breeds of Chicks

Açaí seed bran in the feed of slow-growth broilers

Slaughter of animals: poultry

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