Starch digestibility and apparent metabolizable energy of western Canadian wheat market classes in broiler chickens

Apparent metabolizable energy (AME) of wheat for 6-week-old male broiler chickens was highly correlated with starch digestibility when pelleted diets containing 820 g wheat per kg were fed. Starch isolated from low-AME wheats was hydrolysed in vitro by chicken pancreatic amylase as rapidly as starch from high-AME wheats. When included in semi-purified diets the isolated starches were completely digestible. Digestibility of starch was poor and highly variable when 3-week-old chickens were fed unpelleted wheat diets, but improved with age. Oat hulls improved the digestibility of starch in young chickens fed unpelleted diets.

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Apparent metabolizable energy of cereal grains for broiler chickens is influenced by age

Poultry Science ◽

10.1016/j.psj.2021.101288 ◽

2021 ◽

pp. 101288

Author(s):

M.M. Khalil ◽

M.R. Abdollahi ◽

F. Zaefarian ◽

P.V. Chrystal ◽

V. Ravindran

Keyword(s):

Broiler Chickens ◽

Metabolizable Energy ◽

Cereal Grains ◽

Apparent Metabolizable Energy

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Apparent metabolizable energy of crude glycerin originating from different sources in broiler chickens

Poultry Science ◽

10.3382/ps.2011-01510 ◽

2011 ◽

Vol 90 (11) ◽

pp. 2528-2534 ◽

Cited By ~ 15

Author(s):

W.A. Dozier ◽

B.J. Kerr ◽

S.L. Branton

Keyword(s):

Broiler Chickens ◽

Metabolizable Energy ◽

Crude Glycerin ◽

Apparent Metabolizable Energy ◽

Different Sources

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Feeding value of three categories of pea (Pisum sativum, L.) for poultry

Animal Science ◽

10.1017/s1357729800051444 ◽

1999 ◽

Vol 69 (3) ◽

pp. 591-599 ◽

Cited By ~ 13

Author(s):

F. Grosjean ◽

B. Barrier-Guillot ◽

D. Bastianelli ◽

F. Rudeaux ◽

A. Bourdillon ◽

...

Keyword(s):

Dry Matter ◽

Nutritional Value ◽

Protein Digestibility ◽

Metabolizable Energy ◽

Starch Digestibility ◽

Strongly Correlated ◽

Pisum Sativum L ◽

Apparent Metabolizable Energy ◽

Feeding Value ◽

Positive Effect

AbstractThe nutritional value of different categories of peas was measured in mash or pelleted diets using adult cockerels. Twenty-five round and white-flowered peas (feed peas), 12 round and coloured-flowered peas and five wrinkled and white-flowered peas were used in mash diets. From the same batches, 11 feed peas, five coloured peas and four wrinkled peas were tested in pelleted diets.Mean apparent metabolizable energy (AME) values were 12·02, 11·35 and 10·50 MJ/kg dry matter (DM) for feed peas, coloured peas and wrinkled peas respectively in mash diets and 13·18, 12·72 and 11·63 MJ/kg DM for the same categories in pelleted diets.Mean starch digestibility was 0·905, 0·887 and 0·802 for feed peas, coloured peas and wrinkled peas respectively in mash diets and 0·985, 0·984 and 0·840 for these categories in pelleted diets.Mean protein digestibility was 0·788, 0·643 and 0·798 for feed peas, coloured peas and wrinkled peas respectively in mash diets and corresponding values for peas in pelleted diets were 0·855, 0·743 and 0·853.Pelleting thus had a positive effect on the nutritional value of peas and this improvement was all the more important because the AME and protein digestibility of the pea in mash diets was low.The nutritional value of feed peas for cockerels was not strongly correlated with chemical composition or to digestibility data obtained in the pig.

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NUTRITIVE VALUE OF SORGHUM GRAIN FOR BROILER CHICKENS

Canadian Journal of Animal Science ◽

10.4141/cjas82-105 ◽

1982 ◽

Vol 62 (3) ◽

pp. 869-875 ◽

Cited By ~ 7

Author(s):

H. W. HULAN ◽

F. G. PROUDFOOT

Keyword(s):

Broiler Chickens ◽

Nutritive Value ◽

Metabolizable Energy ◽

Partial Replacement ◽

Feed Conversion ◽

Live Body Weight ◽

Apparent Metabolizable Energy ◽

Poultry Diets ◽

Sorghum Grain ◽

Finisher Diets

Sorghum grain (SG) contained more crude protein (103.5 g/kg) and ash (17.0 g/kg) but less crude fiber (17.7 g/kg) and total lipid (22.6 g/kg) than corn. The SG contained 0.37% ± 0.02 tannin, had a higher apparent metabolizable energy value than corn or wheat and contained all of the amino acids considered essential for chickens at levels in general between those of corn and wheat. Two experiments were carried out to ascertain the nutritive value of SG as a partial replacement for corn and wheat in practical poultry diets using 320 male and 320 female Cobb chicks in each. Starter (finisher) diets fed from 0–21 days (22–42 days) contained the following levels of SG: 15 (19); 30 (39); 45 (58)%. The diets were isoenergic and isonitrogenous. The inclusion of up to 45% SG in the starter diet and up to 58% in the finisher diet had no significant effect on mortality, live body weight, feed conversion or percentage of grade A carcasses. Key words: Broiler chickens, sorghum grain, milo, diets

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Effect of different phytases on the performance, nutrient retention and tibia composition in broiler chickens

Archives Animal Breeding ◽

10.7482/0003-9438-56-104 ◽

2013 ◽

Vol 56 (1) ◽

pp. 1028-1038 ◽

Cited By ~ 2

Author(s):

A. Ptak ◽

D. Józefiak ◽

B. Kierończyk ◽

M. Rawski ◽

K. Żyła ◽

...

Keyword(s):

Broiler Chickens ◽

Nutrient Retention ◽

Nutrient Utilization ◽

Positive Control ◽

Negative Control ◽

Metabolizable Energy ◽

Feed Conversion ◽

E Coli ◽

Performance Response ◽

Apparent Metabolizable Energy

Abstract. The effect of different phytases on the performance response, nutrient utilization and tibia characteristics of chickens was investigated. The five pelleted diets were the following: positive control (PC) with added monocalcium phosphate; negative control (NC) formulated with equivalency values of phytase for Ca and digestible P; and three further diets where different phytases were individually added to the NC diet at 500 FTU/kg. The phytases were derived either from Aspergillus (phytase I), or E. coli (phytases II and III). Compared to PC, the performance parameters, as well as apparent metabolizable energy (AMEn), mineral retention, bone breaking force and tibia mineral content were suppressed by the reduction of dietary Ca and digestible P. All phytases enhanced the overall body weight gains and feed conversion ratio in comparison with NC, but none outperformed PC. Only phytase II improved AMEn compared to NC and PC group. However only phytase I outperformed NC group in terms of mineral retention and P retention was higher than phytase II and III. No significant differences were observed in fat digestibility and N retention. Bone strength among phytases did not differ and all improved this parameter compared to the NC diet. However, even though all phytases enhanced tibia minerals content, the improvement was less pronounced with phytase III. Moreover, the differences in all analysed tibia minerals between phytase III and II were significant suggesting that even among 6-phytases derived from and expressed in the same organism, different efficacy or mode of action can occur.

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Effects of Fermentation on Standardized Ileal Digestibility of Amino Acids and Apparent Metabolizable Energy in Rapeseed Meal Fed to Broiler Chickens

Animals ◽

10.3390/ani10101774 ◽

2020 ◽

Vol 10 (10) ◽

pp. 1774

Author(s):

Zhengke Wu ◽

Jiao Liu ◽

Jiang Chen ◽

Shoaib Ahmed Pirzado ◽

Yang Li ◽

...

Keyword(s):

Amino Acids ◽

Broiler Chickens ◽

Nutritive Value ◽

Animal Feed ◽

Basal Diet ◽

Rapeseed Meal ◽

Metabolizable Energy ◽

Isoleucine Leucine ◽

Ileal Digestibility ◽

Apparent Metabolizable Energy

Rapeseed meal (RSM) is a common protein ingredient in animal diets, while the proportion of RSM in diets is limited because of its anti-nutritional factors. Fermentation based on mixed microbial strains appears to be a suitable approach to improve the nutritive value of rapeseed meal in animal feed. In this study, we evaluated the effects of fermentation on the apparent metabolizable energy (AME) values and standardized ileal digestibility (SID) of amino acids in RSM fed broilers. The AME and nitrogen-corrected apparent metabolizable energy (AMEn) values of RSM and fermented rapeseed meal (FRSM) were determined by the substitution method, with RSM and FRSM proportionally replacing the energy-yielding components of the basal diet by 30%. Results show that fermentation improved AME and AMEn of RSM from 7.44 to 8.51 MJ/kg and from 7.17 to 8.26 MJ/kg, respectively. In the second experiment, two experimental diets were formulated, with RSM and FRSM being the sole sources of amino acids. A nitrogen-free diet (NFD) was also formulated to determine endogenous amino acids losses (EAAL). Feeding on FRSM resulted in higher (p < 0.05) apparent ileal digestibility (AID) and SID of alanine, valine, isoleucine, leucine, tyrosine, lysine, arginine, and phenylalanine. No significant differences between RSM and FRSM were found for AID and SID of asparagine, histidine, threonine, serine, glutamine, praline, glycine, methionine, and cystine. FRSM had greater AMEn values and SID of amino acids compared to RSM, therefore, FRSM was nutritionally superior to RSM in broiler diets.

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Metabolizable energy values of corn and wheat middlings in broiler chickens

Canadian Journal of Animal Science ◽

10.1139/cjas-2019-0023 ◽

2019 ◽

Vol 99 (4) ◽

pp. 905-913 ◽

Cited By ~ 1

Author(s):

Andrew Dunaway ◽

Sunday A. Adedokun

Keyword(s):

Soybean Meal ◽

Difference Method ◽

Broiler Chickens ◽

Dry Matter ◽

Metabolizable Energy ◽

The Other ◽

N Utilization ◽

Apparent Metabolizable Energy ◽

Wheat Middlings ◽

The Difference

Two experiments were conducted to evaluate adaptation length (AL) and composition of reference diets on nitrogen (N)-corrected apparent metabolizable energy (AMEn) in 22-d-old broilers. Birds were allocated to nine treatments (n = 6) consisting of wheat – soybean meal (SBM) (reference diet), corn–wheat–SBM, and wheat middlings (WM)–wheat–SBM (exp. 1), or oats–SBM (reference diet), corn–oats–SBM, and WM–oats–SBM (exp. 2) in conjunction with three AL (12, 8, and 4 d) in a factorial arrangement of treatments (3 × 3). Dry matter (DM), N, energy (En) utilization, and AMEn of corn and WM were determined using the difference method. In exp. 1, birds on the WM–wheat–SBM-based diet had the lowest (P < 0.05) DM, N, and En utilization, as well as AMEn compared with the other two diets. Additionally, AMEn for corn was higher (P < 0.05) compared with that of WM. In exp. 2, N utilization in birds on the corn–oats–SBM-based diet was lower (P < 0.05) compared with birds on the oats–SBM-based diet; however, AMEn of corn and WM was not different. In both experiments, AL was not significantly different. Based on these results, the composition of the reference diet could influence AMEn values of corn and WM in 22-d-old broilers.

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