scholarly journals The Effect of a Commercial Enzyme Preparation on Apparent Metabolizable Energy, the True Ileal Amino Acid Digestibility, and Endogenous Ileal Lysine Losses in Broiler Chickens

2007 ◽  
Vol 86 (4) ◽  
pp. 665-672 ◽  
Author(s):  
S.M. Rutherfurd ◽  
T.K. Chung ◽  
P.J. Moughan
Keyword(s):  
Amino Acid ◽  
Broiler Chickens ◽  
Enzyme Preparation ◽  
Metabolizable Energy ◽  
Commercial Enzyme ◽  
Apparent Metabolizable Energy

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

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

Impact of combined α-galactosidase and xylanase enzymes on growth performance, nutrients digestibility, chyme viscosity, and enzymes activity of broilers fed corn-soybean diets

2021 ◽  
Author(s):  
Xingbo Liu ◽  
Kun Xing ◽  
Ran Ning ◽  
Sergi Carné ◽  
Xingqiang Wu ◽  
...  
Keyword(s):  
Amino Acid ◽  
Growth Performance ◽  
Broiler Chickens ◽  
Average Daily Gain ◽  
Metabolizable Energy ◽  
Enzymes Activity ◽  
Enzyme Supplementation ◽  
Digesta Viscosity ◽  
Nutrients Digestibility ◽  
Endogenous Enzymes

Abstract Two experiments were conducted to investigate the effects of a combined α-galactosidase and xylanase preparation on nutrients digestibility and growth performance in broiler chickens. Experiment 1 had 240 broilers allocated to 3 treatments with the dietary supplementation of 0, 300 and 500 g/t of the enzyme combination. Diet and amino acid (AA) digestibility were assessed. Experiment 2 was a 2 × 3 (enzyme × diet) factorial arrangement with 10 replicates of 12 male broilers per replicate. Diets were based on corn-Soybean meal (SBM) diet and had 3 nutritional levels (normal, 2% apparent metabolizable energy (AME) and crude protein (CP) reduction, and 4% AME and CP reduction). Each of these diets was fed with or without enzyme supplementation. Growth performance, chyme viscosity, nutrients digestibility, and endogenous enzymes activity were assessed. In experiment 1, enzyme supplementation improved the digestibility of Ca (P = 0.025) and ileal digestibility of total AA, Pro, Alu, Ile, Lys, His, Thr, Glu, Val, Leu, Tyr and Phe (P < 0.05), and also tended to increase the AME of diets (P < 0.10). In experiment 2, broilers fed the corn-SBM diet with 4% nutrient reduction had better growth performance (P < 0.05), jejunal digesta viscosity at 42 days (P < 0.01), and lower digestibility of gross energy (GE) (P < 0.05) when compared to those fed the normal nutrient diet. Enzyme inclusion increased digestibility of CP (P = 0.044), GE (P = 0.009), raffinose (P < 0.001) and stachyose (P < 0.001), improved average daily gain (P = 0.031), and reduced jejunal digesta viscosity at 42 days (P = 0.011). Besides, similar improvements trend in amylase, trypsin, sucrase, and maltase activity with enzyme inclusion were observed as with energy. These data support that the enzyme supplementation increased nutrients and ileal amino acid digestibility, improved performance and endogenous enzymes activity.

NUTRITIVE VALUE OF SORGHUM GRAIN FOR BROILER CHICKENS

1982 ◽  
Vol 62 (3) ◽  
pp. 869-875 ◽  
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

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

2013 ◽  
Vol 56 (1) ◽  
pp. 1028-1038 ◽  
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.

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

Animals ◽  
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.

Metabolizable energy values of corn and wheat middlings in broiler chickens

2019 ◽  
Vol 99 (4) ◽  
pp. 905-913 ◽  
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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