Effect of dietary fiber and genetic strain on the performance and energy balance of broiler chickens

Krás, RV; Kessler, Alexandre de Mello; Ribeiro, Aml; Henn, JDi; Santos, Ione Iolanda dos; Halfen, DP; Bockor, Luciane

doi:10.1590/s1516-635x2013000100003

Cited by 22 publications

(22 citation statements)

References 10 publications

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“…In contrast with our study, some authors found that the use of yeast cell in broiler diets improved feed conversion ratio [17]. This may be because that in the previous study high-fiber (5.02%) and low-protein (18%) diets were used, and it has been reported that high-fiber diet [23] and low-protein diet [24] reduce feed efficiency. The results of the effects of dietary yeast supplementation on carcass weight and relative organs weight are presented in Table 4.…”

Section: Resultscontrasting

confidence: 99%

Effect of Dietary Yeast (Saccharomyces cerevisiae) Supplementation on Performance, Carcass Characteristics and Some Metabolic Responses of Broilers

Ahmed¹

2015

AVS

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Abstract:This study was conducted to evaluate the effect of feeding graded levels of yeast on broiler performance, carcass characteristics and some hematological indices. One day old Hubbard broiler chicks (n=160) were randomly allocated to five dietary treatments. Each treatment consisted of 4 replicates of 8 broilers each. The dietary treatments contained 0% yeast (Saccharomyces cerevisiae) as a negative control diet, 0% yeast + 30 ppm Oxytetracyline as a positive control, 1%, 2% and 3% yeast in the starter and finisher diets. During the experimental periods of 6 weeks, feed intake, body weight gain and feed conversion ratio values were calculated. At the end of the experimental period (6 weeks of age), some biochemical and hematological indices, carcass characteristics traits and internal organs weights were recorded. Growth performance parameters were significantly (P≤0.05) affected by experimental diets. Chicks fed either 0 or 3% yeast recorded the highest (P≤0.05) feed intake, however, the best (P≤0.05) body weight gain was obtained by birds fed 0 or 1% dietary yeast compared to the positive control diet. The highest (P≤0.05) feed conversion ratio was reported for birds fed the positive control diet and 3% dietary yeast compared to the negative control diet. The inclusion of different dietary treatments had no significant (P≥0.05) effects on dressing percentage, hot base and relative weights of heart, gizzard and abdominal fat. Nevertheless, birds fed 3% dietary yeast showed significant (P≤0.05) decrease in the relative weight of the liver compared to the negative control diet. Relative weights of breast and thigh were significantly (P≤0.05) higher in birds fed 1% yeast than those fed 3% yeast. There were linear decreases in serum cholesterol and albumin of broilers fed graded levels of dietary yeast. It is concluded that yeast can be included in broiler diet at 1% without detrimental effects on performance, and could therefore serve as a natural substitute for antibiotics.

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Section: Resultscontrasting

confidence: 99%

Effect of Dietary Yeast (Saccharomyces cerevisiae) Supplementation on Performance, Carcass Characteristics and Some Metabolic Responses of Broilers

Ahmed¹

2015

AVS

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“…In this experiment, the basal diet was 30% substituted with test ingredients so the replacement of ingredients with higher fiber content resulted in increased dietary fiber. Kras et al (2013) documented poor performance and lower energy retention in birds fed high fibrous diet. The lowest (P<0.05) ADFI of RB's diets might be due to its more AMEn content.…”

Section: Discussionmentioning

confidence: 98%

Calorific Value of Cereals and Cereal by-products in Growing Male Broilers

Ullah¹,

Sarwar²,

Ahmed³

et al. 2016

IJAB

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An experiment was conducted to determine apparent metabolizable energy corrected for nitrogen (AMEn) of commonly used cereals and cereal by-products in poultry diet. Three samples each of corn, rice broken (RB), rice polishings (RP) and wheat bran (WB) were assayed for AMEn by substitution method using 21-days-old broilers. The 12 experimental diets (4 ingredients x 3 samples) were formulated by substituting the corn-soybean meal basal diet with 30% test ingredients. The acid insoluble ash was added at 1% of all diets. The 468 day-old male broiler chicks (Hubbard x Hubbard) were reared on basal diet from day 1 to 13 and thereafter, experimental diets were offered ad libitum to birds from 14 to 21days. Each diet was offered to 36 birds, equally distributed to six replicate pens. The basal diet continued to feed the birds of six replicates from day 14 to 21. The excreta samples were collected from day 19-21 to calculate AMEn. The average daily feed intake (ADFI), average daily gain (ADG) and feed conversion ratio (FCR) were calculated. Data regarding ADFI, ADG, FCR and AMEn were analyzed using GLM procedures of SAS while means were partitioned by t-test. The ADFI, ADG, FCR and AMEn remained unaltered (P>0.05) by feeding diets based on samples of same feed ingredient except the RP and WB. The birds fed RP and WB based diets showed varying (P<0.05) AMEn among the samples. The birds fed corn substituted basal diet had higher (P<0.05) ADG (56.03 g) followed by RB (50.04 g), WB (45.87 g) and RP (43.61 g) diets. The ADFI of broilers fed corn diets was highest (P<0.05) while it was lowest with RB based diets. The birds showed improved (P<0.05) FCR by feeding RB diet followed by corn, WB and RP diets. The average AMEn of RB and corn was 3372 and 3315 kcal/kg, respectively. In cereal by-products, the RP and WB had 1936 and 1760 kcal/kg AMEn, respectively. In conclusion, varying growth pattern of broilers was observed by feeding corn, RB, RP and WB substituted diets. The RB and RP's AMEn was higher in cereals and cereal by-products, respectively.

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“…O sistema de ED considera que toda energia que desapareceu durante a passagem de certa quantidade de alimento pelo trato gastrointestinal (TGI) foi absorvida e utilizada pelo animal. Entretanto, parte do que é absorvido pode ser diretamente excretado pela urina, ou pode ser metabolizado e gerar resíduos que podem também ser excretados por essa via, que, por sua vez, após descontarmos as perdas urinárias e pela produção de gases (essa mais importante para ruminantes), temos a energia metabolizável (EM), que é a energia efetivamente disponível para o metabolismo animal (Kras et al, 2013).…”

Section: Sistema De Energia Para Avesunclassified

Uso de enzimas para aumentar a qualidade nutricional de farinhas de origem animal

Silva¹,

Gouveia²,

Silva³

et al. 2018

Pubvet

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RESUMO.O crescimento contínuo da indústria de alimentos resulta em uma grande quantidade de resíduos provindos dos frigoríficos de abate animais. O processamento dessa carne resulta em uma enorme quantidade de resíduos. A quantidade de resíduos produzidos além de ser uma grande perda de coprodutos com amplo potencial para reuso na cadeia produtiva, também causam sérios problemas de gestão, tanto do ponto de vista econômico como ambiental. Um dos resíduos gerados são as farinhas de origem animal (FOA), ingrediente rico em proteína, minerais e fonte energia em para rações de animais monogástricos. O uso de enzimas se torna uma estratégia interessante, pois podem tornar as FOA em ingrediente de maior valor nutricional. A suplementação enzimática beneficia a digestão e a absorção dos ingredientes, e sua adição em farinhas de origem animal pode melhorar a qualidade nutricional das rações e, consequentemente, o desempenho dos frangos. Esta revisão apresenta uma discussão sobre as enzimas uteis para nutrição de animais, principalmente as proteases utilizadas na hidrolise de resíduos proteicos, como as FOA. Palavras-chave: alimentos, avicultura, enzimas, nutriçãoUse of enzymes to increase the nutritional quality of animal meal for feed production.ABSTRACT. The continued growth of the food industry results in a large amount of animal slaughterhouse waste. The processing of this meat results in a huge amount of coproduct. The large amount of waste produced besides being a great loss of material with great potential for reuse in the productive chain, also causes serious management problems, both economic and environmental. One of the residues generated is animal meal (FOA), an ingredient rich in proteins, minerals and energy source in rations of monogastric animals. The use of enzymes becomes an interesting strategy because they can make FOA an ingredient of greater nutritional value. Enzyme supplementation benefits the digestion and absorption of the ingredients, and their addition in animal meal can improve the nutritional quality of the rations and, consequently, the performance of the chickens. This review presents a discussion on enzymes useful for animal nutrition, especially the proteases used in the hydrolysis of protein residues, such as FOA.

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Effect of dietary fiber and genetic strain on the performance and energy balance of broiler chickens

Cited by 22 publications

References 10 publications

Effect of Dietary Yeast (Saccharomyces cerevisiae) Supplementation on Performance, Carcass Characteristics and Some Metabolic Responses of Broilers

Effect of Dietary Yeast (Saccharomyces cerevisiae) Supplementation on Performance, Carcass Characteristics and Some Metabolic Responses of Broilers

Calorific Value of Cereals and Cereal by-products in Growing Male Broilers

Uso de enzimas para aumentar a qualidade nutricional de farinhas de origem animal

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