The influence of the amylopectin/amylose ratio in samples of corn on the true metabolizable energy value for ducks

Zhou, Zhongxin; Wan, Hu; Li, Y.; Chen, W.; Qi, Z. L.; Peng, Panpan; Peng, Jian

doi:10.1016/j.anifeedsci.2010.02.005

Cited by 16 publications

(11 citation statements)

References 17 publications

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“…In this case, the energy content of the feed is influenced by the reduction of organic matter, which provides energy contribution to the feed (NASCIMENTO et al, 2009). Ether extract correlated positively with AME and AMEn and, according to Zhou et al (2010), feeds containing more lipids or carbohydrates have higher values of ME compared to those that are high in protein or fiber. On the other hand, the NDF and ADF were highly correlated with the values of ME.…”

Section: Resultsmentioning

confidence: 97%

Adjustment of equations to predict the metabolizable energy of corn for meat type quails

et al. 2015

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The metabolizable energy (ME) determination for foods used in quail diets, through metabolism assays, takes time, infrastructure and financial resources, which makes the development of prediction equations based on proximal composition of foods to estimate the ME values of particular interest. The objective of this study was to adjust the prediction equations of metabolizable energy (ME) of corn for quail. The chemical compositions of 12 maize varieties were determined and a metabolism assay was carried out in order to determine the apparent metabolizable energy (AME) and nitrogen-corrected apparent metabolizable energy (AMEn) of these corn varieties. The values of chemical composition, AME and AMEn, converted to dry matter, were used to adjust the prediction equations. The initial adjustment of simple and multiple linear regression of the AME and AMEn was performed using the values of crude protein (CP), ether extract (EE), neutral (NDF) and acid (ADF) detergent fiber, mineral matter (MM), calcium (Ca) and phosphorus (P) as regressors (full model). To adjust the prediction equations the statistical procedure of simple and multiple linear regression was used, with the technique of indirect elimination (Backward). There was adjustment of 10 prediction equations, in which 5 were for AME and another 5 for AMEn and the R² values ranged from 0.20 to 0.75 and from 0.21 to 0.78, respectively. For all adjusted equations, negative correlations for MM were observed, which may be related to its dilutive effect of the gross energy contained in corn. In conclusion, the equations that showed better adjustment were AME= 5605. 46 -385 alimentos. Objetivou-se com este trabalho ajustar equações de predição dos valores de EM do milho para codornas de corte. Foi determinada a composição química de 12 diferentes cultivares de milho e realizado um ensaio de metabolismo, com estas cultivares, para determinação da EM aparente (EMA) e EMA corrigida para balanço de nitrogênio (EMAn).De posse da composição química, e dos valores de EMA e EMAn, convertidos para a matéria seca, procedeu-se com o ajuste das equações de predição. O ajuste inicial dos modelos de regressão linear simples e múltipla, dos dados de EMA e EMAn, foi realizado utilizando-se os valores de proteína bruta (PB), extrato etéreo (EE), fibras em detergentes neutro (FDN) e ácido (FDA), matéria mineral (MM), cálcio (Ca) e fósforo (P) como regressoras (modelo completo). Para o ajustamento das equações de predição, dos valores de EMA e EMAn, foi utilizado o procedimento de regressão linear simples e múltipla, por meio da técnica de eliminação indireta (Backward). Houve ajustamento de 10 equações de predição da EM do milho, sendo 5 para EMA e 5 para EMAn, cujos valores de R² variaram de 0,20 a 0,75 e de 0,21 a 0,78, respectivamente. Em todas as equações ajustadas observouse correlação negativa para a matéria mineral, o que pode estar associado ao seu efeito diluente da energia bruta contida nos milhos. Conclui-se que as equações que apresentaram melhor ajustamento foram...

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Section: Resultsmentioning

confidence: 97%

Adjustment of equations to predict the metabolizable energy of corn for meat type quails

et al. 2015

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“…Another difference between the 2 grains could concern the type of starch, amylopectin or amylose, which differ greatly between cereals but also among varieties and due to seasonal effects within cereals (Jenkins and Donald, 1995). In birds, digestibility is higher for amylopectin than for amylose (Skiba et al, 2005;Zhou et al, 2010), and generally, the amylopectin level is higher in corn than in sorghum. Hence, a difference in the nature of the starch could explain the lower weights of carcass and abdominal fat observed at 69 d in birds fed sorghum instead of corn, despite similar feed intake and nutritional composition of experimental diets.…”

Section: Discussionmentioning

confidence: 96%

Effects of presentation and type of cereals (corn or sorghum) on performance of geese

Arroyo

Auvergne

Dubois³

et al. 2012

Poultry Science

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The aim of this trial was to study the effects of cereal (corn or sorghum) and of the presentation of the diet (pelleted diet or a mixture with cereal) on the performance of geese. In total, 480 one-day-old geese were divided into 4 groups differing in the diet they received between 52 and 102 d of age: a pelleted diet containing 500 g of sorghum/kg (CS group; AMEn 11.29 MJ/kg, CP 16.70%); a mixture containing 500 g of protein-rich pellets and 500 g of sorghum whole seeds/kg (MS group; AMEn 11.61 MJ/kg, CP 14.30%); a pelleted diet containing 500 g of corn/kg (group CC; AMEn 11.33 MJ/kg, CP 16.40%); and a mixture containing 500 g of protein-rich pellets and 500 g of corn mash/kg (group MC; AMEn 11.48 MJ/kg, CP 14.50%). From 102 to 117 d, 33 birds/sex/group were force-fed with corn. Between 52 and 102 d of age, individual BW and collective feed intake (40 birds/pen) were measured weekly. Body traits were measured at 69, 96, and 117 d and the volume of the crop was measured at 102 d of age. The cereal had no significant effect on total feed intake (15,028 g, NS) or BW (5,811 g, NS) but the breast development at 102 d was less in birds fed sorghum compared with corn (-4.9%; P<0.05). Feed intake (+8.4% between 69 and 102 d; P<0.001), BW (+3.9%; P<0.001) and gut development (+9.3%; P<0.001) were higher when the diet was offered as a mixture compared with a complete pelleted diet. The birds fed the complete pelleted diets had a larger crop (+10.1%; P<0.05) than others. The cereal and the presentation of the diet had no effect on the body traits at the end of the force feeding. The results suggest that the use of sorghum whole seeds is interesting for feeding geese.

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“…Vieira et al (2007) reported that corn hybrid's AMEn ranged from 3405 to 4013 kcal/kg and was related it to its varying lipid content. The ingredient's oil content influences its AMEn value (Zhou et al, 2010). Wang and Parsons (1998) reported that positive relationship existed in corn's energy level and its ether extract content.…”

Section: Discussionmentioning

confidence: 99%

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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The influence of the amylopectin/amylose ratio in samples of corn on the true metabolizable energy value for ducks

Cited by 16 publications

References 17 publications

Adjustment of equations to predict the metabolizable energy of corn for meat type quails

Adjustment of equations to predict the metabolizable energy of corn for meat type quails

Effects of presentation and type of cereals (corn or sorghum) on performance of geese

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

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