scholarly journals Historical flaws in bioassays used to generate metabolizable energy values for poultry feed formulation: a critical review

2020 ◽  
Vol 99 (1) ◽  
pp. 385-406 ◽  
Author(s):  
Shu-Biao Wu ◽  
Mingan Choct ◽  
Gene Pesti
Keyword(s):  
Critical Review ◽  
Metabolizable Energy ◽  
Poultry Feed ◽  
Feed Formulation

scholarly journals Application of Apparent Metabolizable Energy versus Nitrogen-Corrected Apparent Metabolizable Energy in Poultry Feed Formulations: A Continuing Conundrum

Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2174
Author(s):  
M. Reza Abdollahi ◽  
Markus Wiltafsky-Martin ◽  
Velmurugu Ravindran
Keyword(s):  
Soybean Meal ◽  
Protein Quality ◽  
Rapeseed Meal ◽  
Metabolizable Energy ◽  
Poultry Feed ◽  
N Retention ◽  
Feed Formulation ◽  
Protein Sources ◽  
Energy Evaluation ◽  
Apparent Metabolizable Energy

In the present investigation, N retention, AME, and AMEn data from six energy evaluation assays, involving four protein sources (soybean meal, full-fat soybean, rapeseed meal and maize distiller’s dried grains with solubles [DDGS]), are reported. The correction for zero N retention, reduced the AME value of soybean meal samples from different origins from 9.9 to 17.8% with increasing N retention. The magnitude of AME penalization in full-fat soybean samples, imposed by zero N correction, increased from 1.90 to 9.64% with increasing N retention. The Δ AME (AME minus AMEn) in rapeseed meal samples increased from 0.70 to 1.09 MJ/kg as N-retention increased. In maize DDGS samples, the correction for zero N retention increased the magnitude of AME penalization from 5.44 to 8.21% with increasing N retention. For all protein sources, positive correlations (p < 0.001; r = 0.831 to 0.991) were observed between the N retention and Δ AME. The present data confirms that correcting AME values to zero N retention for modern broilers penalizes the energy value of protein sources and is of higher magnitude for ingredients with higher protein quality. Feed formulation based on uncorrected AME values could benefit least cost broiler feed formulations and merits further investigation.

Quality of the carcass and organs of chicken fed with two different insects meals

2018 ◽  
Vol 4 (4) ◽  
pp. 269-274
Author(s):  
M.I. Amobi ◽  
C.I. Ebenebe
Keyword(s):  
Broiler Chickens ◽  
Live Weight ◽  
Organ Weight ◽  
Poultry Feed ◽  
Source Control ◽  
Carcass Quality ◽  
Broiler Chicks ◽  
Major Protein ◽  
Feed Formulation ◽  
Dietary Treatments

The influence of insect protein origins on broiler chicken meat parameters were studied using 135 day old Arbor acre birds subjected to three dietary treatments: Diet A comprised of a standard feed of the brand name ‘vital feed’ containing fishmeal as the major protein source (control), while Diet B and Diet C contained insect meal from African palm weevil larvae (Rhynchophorus phoenicis), respectively, winged termite (Macrotermes bellicosus) as replacement for fishmeal. Forty five broiler chicks were randomly assigned to each of the dietary treatments at the rate of fifteen chicks per replicate making three replicates per treatment in a completely randomised design. The experiment lasted for eight weeks. During this period, the birds were housed in similar cages and subjected to similar husbandry and sanitation practices, such that the only source of variation was the dietary treatments. After eight weeks of the experiment, carcass quality and organ weight measurements were analysed using appropriate statistical analysis. The result obtained showed that the broiler chickens fed insect meals performed significantly (P<0.05) better in terms of live weight gain (2,200.85±64.23 g and 2,046±58.40 g for Diet B and Diet C) compared to control. Carcass quality relating to defeathered weight and eviscerated weight also followed a similar trend with Diet B (2,187.74±62.72 g and 1,788.93±70.70 g), Diet C (2,015.83±74.62 g and 1,466.97±100.05 g), and Diet A (control; 1,526.47±47.40 g and 1,240.30±64.53 g). The records of cut-up parts and organ weight measurements were also significantly different (P<0.05) for the birds on insect meal (Diet B and Diet C) than those on fishmeal based diet (Diet A). The result showed that insect meal can effectively serve as a major source of protein in poultry feed formulation.

scholarly journals Biodegradation of Cellulosic Wastes Using Aspergillus Niger : Prospect for Poultry Feed Formulation

2010 ◽  
Vol 24 (S1) ◽  
Author(s):  
Musa Oladayo Babalola ◽  
Ihuaku Veronica Okochi ◽  
Uzoma Anthony Okafor
Keyword(s):  
Aspergillus Niger ◽  
Poultry Feed ◽  
Feed Formulation

Calculating the metabolizable energy of macronutrients: a critical review of Atwater’s results

2016 ◽  
Vol 75 (1) ◽  
pp. 37-48 ◽  
Author(s):  
M. Judith Sánchez-Peña ◽  
Fabiola Márquez-Sandoval ◽  
Ana C. Ramírez-Anguiano ◽  
Sandra F. Velasco-Ramírez ◽  
Gabriela Macedo-Ojeda ◽  
...  
Keyword(s):  
Critical Review ◽  
Metabolizable Energy
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