Effect of varying dietary crude protein and metabolizable energy levels on leg abnormalities and performance in broiler chickens

Sensi-1 Agrinak is a strain of the improved native chickens for meat production in Indonesia. The objective of this study was to investigate influence of different dietary energy and protein levels on performance, meat bone ratio, and meat chemical composition of Sensi-1 Agrinak chicken, reared until 10 weeks of age. Two hundred and sixteen of unsexed day old chickens (DOC) of Sensi-1 Agrinak were subjected to six experimental rations differed in dietary crude protein (CP) content,. Namely: 21;19; and 17 % and dietary metabolizable energy (ME) (2800 and 3000 kcal/kg). Each treatment combination was replicated four times and fed from day old to 10 weeks old. In each treatment combination there were nine unsexed-DOCs. The parameters observed were performance (i.e. live weight, feed intake, viability, FCR), economic index (European Production Efficiency Factor/EPEF), meat bone ratio, and meat chemical composition. Result showed that increased of dietary CP level increased live weight and EPEF (p<0.05). Sensi-1 Agrinak chicken had the best FCR (2.59), when fed diet containing 21% CP and 3000 kcal/kg. Increased dietary CP level increased the meat-bone ratio of breast, thighs, and drumsticks. Meanwhile, increased levels of dietary CP and ME did not affect (p>0.05) meat chemical composition. It is concluded that optimal dietary levels of crude protein and energy for unsexed Sensi-1 Agrinak chicken up to 10 weeks of age were 21% CP and 3000 kcal/kg.

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Consequences of varying dietary crude protein and metabolizable energy levels on growth performance, carcass characteristics and biochemical parameters of growing geese

Animal Biotechnology ◽

10.1080/10495398.2020.1814791 ◽

2020 ◽

pp. 1-9

Author(s):

Mahmoud Alagawany ◽

Elwy A. Ashour ◽

Mohamed S. El-Kholy ◽

Diaa E. Abou-Kassem ◽

Tamer Roshdy ◽

...

Keyword(s):

Growth Performance ◽

Biochemical Parameters ◽

Crude Protein ◽

Energy Levels ◽

Carcass Characteristics ◽

Metabolizable Energy ◽

Dietary Crude Protein

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Effect of Dietary Crude Protein and Metabolizable Energy Levels on the Performance of Laying Hens.

Japanese poultry science ◽

10.2141/jpsa.30.1 ◽

1993 ◽

Vol 30 (1) ◽

pp. 1-15

Author(s):

Koji TOTSUKA ◽

Yukinori OKAZAKI ◽

Akemi YAMAMOTO ◽

Kazuyuki KOIDE ◽

Emiko WATANABE ◽

...

Keyword(s):

Crude Protein ◽

Laying Hens ◽

Energy Levels ◽

Metabolizable Energy ◽

Dietary Crude Protein

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Effect of enzyme addition on energy utilization and performance of broiler chickens fed wheat-based diet with different metabolizable energy levels

Acta Scientiarum Animal Sciences ◽

10.4025/actascianimsci.v41i1.44585 ◽

2019 ◽

Vol 41 (1) ◽

pp. 44585

Author(s):

Seyed adel Moftakharzadeh ◽

Hossein Janmohammadi ◽

Akbar Taghizadeh ◽

Ruhollah Kianfar ◽

Majid Geshlog Olyayee

Keyword(s):

Broiler Chickens ◽

Energy Levels ◽

Metabolizable Energy ◽

Energy Utilization ◽

And Performance

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Prediction of metabolizable energy values in poultry offal meal for broiler chickens

Revista Brasileira de Zootecnia ◽

10.1590/s1516-35982010001000020 ◽

2010 ◽

Vol 39 (10) ◽

pp. 2237-2245 ◽

Cited By ~ 2

Author(s):

Edney Pereira da Silva ◽

Carlos Bôa-Viagem Rabello ◽

Luiz Fernando Teixeira Albino ◽

Jorge Victor Ludke ◽

Michele Bernardino de Lima ◽

...

Keyword(s):

Chemical Composition ◽

Broiler Chickens ◽

Crude Protein ◽

Matter Content ◽

Metabolizable Energy ◽

Mineral Matter ◽

Ether Extract ◽

High Fat ◽

Collection Method ◽

Gross Energy

This research aimed at generating and evaluating prediction equations to estimate metabolizable energy values in poultry offal meal. The used information refers to values of apparent and true metabolizable energy corrected for nitrogen balance (AMEn and TMEn) and for chemical composition of poultry offal meal. The literature review only included published papers on poultry offal meal developed in Brazil, and that had AMEn and TMEn values obtained by the total excreta collection method from growing broiler chickens and the chemical composition in crude protein (CP), ether extract (EE), mineral matter (MM), gross energy (GE), calcium (Ca) and phosphorus (P). The general equation obtained to estimate AMEn values of poultry offal meal was: AMEn = -2315.69 + 31.4439(CP) + 29.7697(MM) + 0.7689(GE) - 49.3611(Ca), R² = 72%. For meals with high fat contents (higher than 15%) and low mineral matter contents (lower than 10%), it is suggest the use of the equation AMEn = + 3245.07 + 46.8428(EE), R² = 76%, and for meals with high mineral matter content (higher than 10%), it is suggest the equations AMEn = 4059.15 - 440.397(P), R² = 82%. To estimate values of TMEn, it is suggested for meals with high mineral matter content the equation: TMEn = 5092.57 - 115.647(MM), R² = 78%, and for those with low contents of this component, the option is the equation: TMEn = 3617.83 - 15.7988(CP) - 18.2323(EE) - 96.3884(MM) + 0.4874(GE), R² = 76%.

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Effect of protein and energy levels in a constant ratio supplemented with methionine and lysine on performance of layers and on egg quality.

Netherlands Journal of Agricultural Science ◽

10.18174/njas.v28i1.17041 ◽

1980 ◽

Vol 28 (1) ◽

pp. 29-35

Author(s):

A.R. El Boushy ◽

L.G.M. van Gils ◽

M.C. Papadopoulos

Keyword(s):

Feed Intake ◽

Crude Protein ◽

Egg Production ◽

Laying Hens ◽

Egg Quality ◽

Energy Levels ◽

Metabolizable Energy ◽

Constant Ratio ◽

Feed Conversion ◽

Egg Weight

Twenty groups of 36 laying hens in individual cages were fed on one of 5 diets in which the energy:protein ratio was constant. Diets 1 to 5 had crude protein 12.0, 12.9, 14.0, 15.0 and 16.0% and metabolizable energy 8.71, 9.57, 10.27, 11.10 and 11.70 MJ/kg. From 24 to 64 weeks old, egg production of hens given diets 1 to 5 was 71.46, 71.31, 72.51, 71.13 and 69.99%, respectively. Corresponding values of mean egg weight, weekly feed intake and efficiency of feed conversion were 60.51, 60.47, 61.11, 61.02, 61.07 g; 157.16, 147.56, 142.03, 130.37, 126.72 g; 3.674, 3.460, 3.262, 3.031, 3.014 kg feed/kg egg, respectively. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Growth and feed utilization of Boer x Kacang crossbred goats offered total mixed rations of different protein and energy levels

Jurnal Ilmu Ternak dan Veteriner ◽

10.14334/jitv.v22i4.1782 ◽

2018 ◽

Vol 22 (4) ◽

pp. 188

Author(s):

Simon P. Ginting ◽

Kiston Simanihuruk ◽

Antonius Antonius ◽

Andi Tarigan

Keyword(s):

Energy Density ◽

Protein Level ◽

Crude Protein ◽

Energy Levels ◽

Dietary Treatment ◽

Feed Utilization ◽

Metabolizable Energy ◽

High Rate ◽

Protein Levels ◽

Crude Protein Level

The aim of this study was to evaluate the growth of and feed utilization by Boer x Kacang crosses goats fed on total mixed ration differing in protein and energy levels. Four total mixed rations combination were formulated to contain 16 and 18% crude protein and 2650 and 2850 Kcal ME/ kg DM (dried matter) energy density. Twenty-eight male Boer x Kacang crosses goats (14.5 ± 1.14 kg) and of age ranging from 4 to 5 months were randomly allocated to one of these four TMRs (total mixed rations) (7 animals/TMR). The effects of dietary treatment were assessed using the general linear model and significance of the diet effects was detected using Duncan’s multiple range test. Dry matter intake increased as metabolizable energy density of diet increased from 2650 to 2850 Kcal/kg DM, but it is not affected by increasing crude protein level from 16 to 18%. The average daily gains were not improved (P>0.05) as the crude protein levels and metabolizable energy density of diet increased. Crude protein levels and ME density did not affect (P>0.05) the DM, OM and energy digestibility, but NDF digestibility was affected by the ME density of diets (P<0.05). Daily N intakes were greater (P<0.0%) in goats received diets higher in the crude protein and metabolizable energy levels. At this high rate of feed intake this type of goats are able to gain optimally when offered feed with crude protein level of 16% and metabolizable energy density of 2850 Kcal/kg DM.

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