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 24 publications

(22 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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

View full text Add to dashboard Cite

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.

show abstract

Section: Resultscontrasting

confidence: 99%

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

Ahmed¹

2015

AVS

View full text Add to dashboard Cite

show abstract

“…Conventionally, insoluble non‐fermentable dietary fibre (DF), including cellulose and lignin, is considered as a diluent of a diet, which can affect energy balance of broiler chickens, reducing the digestibility of nutrients and the metabolisable energy level in poultry feeds (Jørgensen et al., ; Cao et al., ; Krás et al., ). However, recent research performed on broilers have shown that limited amounts of insoluble DF in the chicken diet prevent intestinal dysfunction by stimulating gastrointestinal tract development, growth of beneficial gut bacteria, activity of pancreatic enzymes, and bile acid secretion and thus improve digestive function (Hetland and Svihus, ; Cao et al., ; Hetland et al., ; González‐Alvarado et al., ; Jiménez‐Moreno et al., , ).…”

Section: Introductionmentioning

confidence: 99%

Effect of dietary lignocellulose on ileal and total tract digestibility of fat and fatty acids in broiler chickens

Bogusławska–Tryk

Piotrowska

Szymeczko

et al. 2016

Animal Physiology Nutrition

View full text Add to dashboard Cite

The study was conducted to determine the effect of a lignocellulose supplemented diet on apparent ileal and total tract digestibility of fat and fatty acids (FA) in broiler chickens. A total of 48 21-day-old male Ross 308 chickens were divided into four treatment groups (n = 12) with six replicates per treatment. From 21 to 42 days of age, the broilers were fed experimental diets varied in the amount of lignocellulose: 0%, 0.25%, 0.5% and 1%. Total excreta were gathered during the last 3 days of the feeding trial and digesta was collected from the ileum at 42 days of the bird age. Digestibility was determined by the indicator method. The ether extract content in diet/digesta/excreta was determined by the gravimetric method, and fatty acid methyl esters were analysed by gas chromatography-mass spectrometry. Fat digestibility measured to the end of the small intestine and in the whole gastrointestinal tract in birds was high and exceeded 90% and 87% respectively. Addition of lignocellulose (1%) increased (p< 0.05) ileal fat digestibility but had no significant effect on total tract fat digestion. Absorption of total fatty acids (TFA) as well as myristic (C14:0), palmitoleic (C16:1) and α-linolenic (C18:3n-3) acids, estimated by both methods, was significantly higher in birds fed the diets supplemented with lignocellulose, especially at a dose of 1%. Total tract absorption of some dietary polyunsaturated fatty acids (PUFA) (C20:2, C20:4n-6) was significantly lower from diet supplemented with 0.5% and 0.25% lignocellulose. There was observed a decrease in apparent digestibility of fat and most examined fatty acids, when measured between terminal ileum and total gastrointestinal tract. The results suggest that lignocellulose can affect digestion and FA absorption in broilers but, as the effect of lignocellulose was not studied previously, further investigations are necessary to confirm the results of the present experiment.

show abstract

“…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

View full text Add to dashboard Cite

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.

show abstract

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

Cited by 24 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

Effect of dietary lignocellulose on ileal and total tract digestibility of fat and fatty acids in broiler chickens

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

Contact Info

Product

Resources

About