Inclusão da farinha de varredura de mandioca em rações de frangos de corte

Freitas, Cleber Rondinelli Gomes de; Lüdke, Maria do Carmo Mohaupt Marques; Ludke, Jorge Vítor; Rabello, Carlos Bôa-Viagem; Nascimento, Guilherme Rodrigues do; Barbosa, Emanuela Nataly Ribeiro

doi:10.4025/actascianimsci.v30i2.4680

Cited by 2 publications

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“…López and Baião (2004) affirmed this is because feeds containing smaller MGD have a higher rate of passage and elicit lower gizzard activity. Freitas et al (2008) worked with increasing density levels (g/dL) obtained with the use of different quantities of cassava sweeping-waste meal in the diet (0,75,150,225, and 300 g kg −1 ) and concluded that higher diet density was a marked factor contributing to the reduction of gizzard weight and yield. As seen in the diets of the present experiment, their finding is explained by the fact that increasing density is also related to reduced particle sizes.…”

Section: Discussionmentioning

confidence: 99%

Energy efficiency of pasta waste and its effect on performance, carcass, and economic viability of broilers

et al. 2018

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The objective of this study was to determine the energy value of pasta waste through a metabolism trial and determine the best level of its inclusion in broiler diets. In the metabolism trial, sixty 14-day-old birds were assigned to two treatments (control diet and a diet in which 30% was replaced by the byproduct) with six replicates and five birds per experimental unit. In the performance trial, 525 one-day-old chicks were assigned to treatments consisting of five levels of pasta waste (0, 100, 200, 300, and 400 g kg −1) in the diet, with seven replicates and 15 birds per experimental unit, in a completely randomized design. The phases of up to 7, 21, 35, and 42 days of age were evaluated. At the end, two broilers with average weight were selected per plot for carcass evaluation. An economic analysis was undertaken. The calculated apparent metabolizable energy (AME) value of the waste was 3812 kcal kg −1 , and its nitrogen-corrected AME was 3616 kcal kg −1. In the performance trial, no significant difference was detected from 1 to 7 days. However, in the other phases, a decreasing effect was observed on feed intake, weight gain, slaughter weight, hot-and cold-carcass weights, empty-and full-gizzard weights and yields, cuts (chest, drumstick, thigh, wings, and back), and feed conversion worsened. The revenue and gross margin calculated for the diets decreased with pasta waste. Therefore, pasta waste is not a viable alternative, except in the pre-starter phase of broilers.

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Section: Discussionmentioning

confidence: 99%

Energy efficiency of pasta waste and its effect on performance, carcass, and economic viability of broilers

et al. 2018

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<b>Whole scrapings of cassava root in diets for broilers from 1 to 21 days of age

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Lopes

Abreu

et al. 2014

Acta Sci. Anim. Sci.

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ABSTRACT. The study was conducted to evaluate the effect of including whole cassava root scrapings (WCS) in diets of broilers on performance and the metabolizability of dry matter, crude protein, and gross energy and on nitrogenous balance. Four hundred female and 100 male broilers from Ross strain were used in the performance and metabolism studies, respectively. In both studies, broilers were allotted in completely randomized block design with five treatments and four replicates. The experimental unit was represented for twenty birds per box for performance study and five birds per metabolic cage for metabolism study. The treatments consisted of diets containing 0, 5, 10, 15, and 20% WCS inclusion. Up to 5.1% WCS can be included in the diet of broilers from 1 to 21 without compromising feed conversion and productive efficiency index. Dry matter, crude protein, and gross energy metabolizability and the nitrogen balance of the diets are not influenced by the inclusion of whole cassava root scrapings up to 20% in diets of broilers from 1 to 21 days of age.Keywords: crude protein, metabolizability, performance.Raspa integral da raiz de mandioca para frangos no período de 1 a 21 dias RESUMO. Avaliaram-se diferentes níveis de inclusão da raspa integral da raiz de mandioca (RIM) com o objetivo de avaliar o desempenho produtivo e a metabolizabilidade da matéria seca, da proteína bruta e da energia bruta de frangos de corte, no período de um a 21 dias de idade. No ensaio de desempenho, foram utilizadas 400 aves fêmeas da linhagem Ross e para o de metabolismo, 100 frangos machos da mesma linhagem. O delineamento experimental dos dois ensaios foi o de blocos ao acaso, com cinco tratamentos, quatro repetições e 20 aves alojadas em cada boxe para o ensaio de desempenho. Cinco aves foram alojadas em cada gaiola metabólica, para o estudo de metabolismo. Os tratamentos consistiram de rações contendo 0, 5, 10, 15 e 20% de inclusão de RIM. A RIM mandioca pode ser incluída em até 5,1% na ração de frangos de corte, no período de 1 a 21 dias, sem comprometimento da conversão alimentar e do índice de eficiência produtiva. As variáveis de metabolizabilidade da matéria seca, da proteína bruta, da energia bruta e o balanço de nitrogênio das rações não são influenciadas pelos níveis de inclusão da RIM em até 20%, no período de um a 21 dias.Palavras-chave: proteína bruta, metabolizabilidade, desempenho.

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Inclusão da farinha de varredura de mandioca em rações de frangos de corte

Cited by 2 publications

References 3 publications

Energy efficiency of pasta waste and its effect on performance, carcass, and economic viability of broilers

Energy efficiency of pasta waste and its effect on performance, carcass, and economic viability of broilers

<b>Whole scrapings of cassava root in diets for broilers from 1 to 21 days of age

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