scholarly journals Metabolizable Energy Levels for Free-Range Broiler Chickens

2020 ◽  
Vol 8 (3) ◽  
pp. 820
Author(s):  
Luanna Lopes Paiva Copat ◽  
Karina Marcia Ribeiro de Souza Nascimento ◽  
Charles Kiefer ◽  
Patrícia Rodrigues Berno ◽  
Henrique Barbosa de Freitas ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Energy Levels ◽  
Protein Body ◽  
Abdominal Fat ◽  
Metabolizable Energy ◽  
Feed Conversion ◽  
Carcass Yield ◽  
Free Range ◽  
Randomized Design ◽  
Completely Randomized Design

The aim of this study was to evaluate the effect of dietary metabolizable energy levels on the performance and carcass yield of free-range broiler chickens from 1 to 84 days of age. A total of 900 male day-old naked neck lineage chicks were distributed in a completely randomized design between six levels of metabolizable energy (2,700; 2,800; 2,900; 3,000; 3,100 and 3,200 kcal.kg-1 diet) with six replications of 25 birds each. The increase in levels of dietary metabolizable energy resulted in a linear reduction of the feed intake, crude protein and digestible lysine intakes, as well as in the protein body deposition and protein efficiency and linear improvements in the feed conversion ratio of chickens in all experimental phases. The carcass yield, wing and abdominal fat weight and percentage of abdominal fat reduced linearly by increasing the level of dietary metabolizable energy. The diet including 2700 kcal.kg-1 of metabolizable energy in the diet of free-range broiler chickens in phases 1 to 28, 28 and 56 and 57 to 84 days of age does not interfere in the broilers performance and results in a better carcass yield in the final period of production.

Enzyme complex addition in barley or rye broiler diets with two energy levels fed from 1 to 21 days

2021 ◽  
pp. 1-11
Author(s):  
Caio Henrique Pereira de Souza ◽  
Márcia Izumi Sakamoto ◽  
Paulo Cesar Pozza ◽  
Tatiana Carlesso dos Santos ◽  
Humberto Marques Lipori ◽  
...  
Keyword(s):  
Energy Levels ◽  
Blood Parameters ◽  
Nutrient Digestibility ◽  
Metabolizable Energy ◽  
Control Treatment ◽  
Enzyme Complex ◽  
Feed Conversion ◽  
Randomized Design ◽  
Apparent Metabolizable Energy ◽  
Completely Randomized Design

Two experiments were conducted to evaluate diet digestibility, performance, digestive parameters, and blood parameters when an enzyme complex (EC) was used in barley- and rye-based diets with different energy levels. In the digestibility assay (exp. I), 108 seventeen-day-old Cobb male broilers were distributed in a completely randomized design in 2 × 2 × 2 + 1 factorial arrangement with two feeds (barley or rye), two EC levels (0% and 0.02%), and two energy levels [3025 and 3125 kcal apparent metabolizable energy (AME)·kg−1], plus a control treatment. In exp. II, 1080 one-day-old Cobb male broilers were distributed in a completely randomized design in 2 × 2 × 2 + 1 factorial arrangement with two feeds (barley or rye), two EC levels (0% and 0.02%), and two energy levels (2875 and 2975 kcal AME·kg−1). No interactions were observed for any variables (exp. I and II). Enzyme complex improved the apparent metabolizable coefficient of gross energy (P = 0.0432) of diets. The EC provided greater weight gain (P = 0.0003) and better feed conversion (P = 0.0025). Intestinal viscosity at 21 d was reduced (P < 0.0001) with the addition of the EC. The EC improved nutrient digestibility and performance, but the effects of energy reduction on performance could not be overcome.

scholarly journals Growth performance and carcass yield of broiler chickens in response to carbohydrases and its association with phytase

2019 ◽  
Vol 71 (3) ◽  
pp. 983-989
Author(s):  
G.V. Dessimoni ◽  
N.K. Sakomura ◽  
D.C.Z. Donato ◽  
L. Soares ◽  
M.F. Sarcinelli ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Positive Control ◽  
Negative Control ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Carcass Yield ◽  
Randomized Design ◽  
Carcass Parameters ◽  
Completely Randomized Design

ABSTRACT An experiment was conducted to evaluate broiler chicken performance and carcass yield in response to carbohydrase supplementation (Xylanase and Betaglucanase; XB) and association of carbohydrase and phytase (PHY). A total of 1,920 day-old male broiler chicks (Cobb 500) were distributed in a completely randomized design with 8 treatments and 8 replicates each, allocated in 64 pens with 30 chicks each. The treatments were: Positive Control (PC); Negative Control (NC): reduced ME [-120kcal/kg (Starter) and -170kcal/kg (Finisher)]; NC + XB [50g/ton]; NC + XB [100g/ton]; NC + XB [150g/ton]; NC + XB [50g/ton] + PHY [100g/ton]; NC + XB [100g/ton] + PHY [100g/ton]; NC + XB [150g/ton] + PHY [100g/ton]. The inclusion of XB (150) and XB (50, 100, and 150) associated with phytase increased feed intake than positive control when considering the total rearing phase. The feed conversion ratio of all broilers fed diets with energy reduction were worse than positive control, even with the addition of enzymes, and did not differ between them. There was no significant effect of treatments on carcass parameters.

scholarly journals Performance and physiological parameters in broilers fed different enzyme complexes

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2765
Author(s):  
Thiago Dos Santos Andrade ◽  
Ricardo Vianna Nunes ◽  
Idiana Mara da Silva ◽  
Lucas Wachholz ◽  
Vitor Barbosa Fascina
Keyword(s):  
Broiler Chickens ◽  
Control Diet ◽  
Abdominal Fat ◽  
Negative Control ◽  
Metabolizable Energy ◽  
Enzyme Complex ◽  
Feed Conversion ◽  
Blood Profile ◽  
Carcass Yield ◽  
Protease Enzyme

The effects of enzyme supplementation on the performance, yield, and blood profile of broilers fed corn and soybean diets from 1 to 42 days of age were evaluated. A total of 960 male broilers were used, distributed in a completely randomized design, with six treatments and eight replications. Two diets were used: a positive control formulated to meet the birds’ nutritional requirements (Diet 1) and a negative control diet with reduction of 150 kcal.kg-1 of metabolizable energy (Diet 2) and 12% amino acid in the initial phase and 18% during the growing and finishing phases. Further diets were based on the negative control with enzymes: enzyme complex 1, composed of 125 g ton-1 protease; enzyme complex 2, composed of 100 g ton-1 amylase, protease, and xylanase; enzyme complex 3, composed of 500 g ton-1 amylase, protease, and xylanase; and enzyme complex 4, composed of 125 g ton-1 protease and 500 g ton-1 beta-mannanase. Enzymatic supplementation did not improve performance during the initial and growing phases due to nutritional imbalance, resulting in the worst weight gain and feed conversion during the finishing phase. Carcass yield, leg yield, abdominal fat, and pancreas were altered by enzymatic supplementation. Triglyceride levels influenced abdominal fat deposition, and the serum levels of albumin and alanine aminotransferase were altered by enzymatic supplementation. Enzymatic supplementation was not effective in restoring broiler performance, carcass yield, and cuts, with changes in the serum biochemical profile of the broiler chickens.

scholarly journals Performance and physiological parameters in broilers fed different enzyme complexes

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2765 ◽  
Author(s):  
Thiago Dos Santos Andrade ◽  
Ricardo Vianna Nunes ◽  
Idiana Mara da Silva ◽  
Lucas Wachholz ◽  
Vitor Barbosa Fascina
Keyword(s):  
Broiler Chickens ◽  
Control Diet ◽  
Abdominal Fat ◽  
Negative Control ◽  
Metabolizable Energy ◽  
Enzyme Complex ◽  
Feed Conversion ◽  
Blood Profile ◽  
Carcass Yield ◽  
Protease Enzyme

The effects of enzyme supplementation on the performance, yield, and blood profile of broilers fed corn and soybean diets from 1 to 42 days of age were evaluated. A total of 960 male broilers were used, distributed in a completely randomized design, with six treatments and eight replications. Two diets were used: a positive control formulated to meet the birds’ nutritional requirements (Diet 1) and a negative control diet with reduction of 150 kcal.kg-1 of metabolizable energy (Diet 2) and 12% amino acid in the initial phase and 18% during the growing and finishing phases. Further diets were based on the negative control with enzymes: enzyme complex 1, composed of 125 g ton-1 protease; enzyme complex 2, composed of 100 g ton-1 amylase, protease, and xylanase; enzyme complex 3, composed of 500 g ton-1 amylase, protease, and xylanase; and enzyme complex 4, composed of 125 g ton-1 protease and 500 g ton-1 beta-mannanase. Enzymatic supplementation did not improve performance during the initial and growing phases due to nutritional imbalance, resulting in the worst weight gain and feed conversion during the finishing phase. Carcass yield, leg yield, abdominal fat, and pancreas were altered by enzymatic supplementation. Triglyceride levels influenced abdominal fat deposition, and the serum levels of albumin and alanine aminotransferase were altered by enzymatic supplementation. Enzymatic supplementation was not effective in restoring broiler performance, carcass yield, and cuts, with changes in the serum biochemical profile of the broiler chickens.

scholarly journals Dressing percentage, giblet and abdominal fat of broiler chickens given Orthosiphon stamineus Benth leave juice in drinking water

2021 ◽  
Vol 902 (1) ◽  
pp. 012046
Author(s):  
J J M R Londok ◽  
J E G Rompis
Keyword(s):  
Drinking Water ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Abdominal Fat ◽  
Metabolizable Energy ◽  
Orthosiphon Stamineus ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Dressing Percentage ◽  
Different Levels

Abstract This research was conducted to study the effects of cat whiskers leave juice (Orthosiphon stamineus Benth) (OLJ) on the dressing percentage, giblet, and abdominal fat of broiler chicken. The research used 100 chicks which were reared for five weeks. At the end of the fifth week, 40 chickens were slaughtered as samples. The diets consisted of a commercial ration with 2900 kcal.kg−1 metabolizable energy and 22% protein. The drinking water consisted of different levels of OLJ (0, 10, 20, 30 mL/L). A Completely Randomized Design was used in this research with 4 treatments and 5 replications. Dressing percentage, liver, heart, gizzard, and abdominal fat were observed. The data were analysed by Analysis of variance/ANOVA. The result showed that OLJ significantly (P<0.01) affected live bird’s weight, but not significantly different (P>0.05) for dressing percentage, giblet, and abdominal fat of broiler chicken. On broiler chicken, administration of 10 mL/L OLJ significantly (P<0.01) decreased the live bird’s weight compared to control (0 mL/L OLJ). However, drinking 20 mL/L and 30mL/L cat whiskers juice were not significantly different. The conclusion is that the broiler chicken could tolerate up to 30 mL/L cat whiskers leaves juice.

scholarly journals Feeding plans with the use of glycerin for broilers

2019 ◽  
Vol 10 (2) ◽  
pp. 254-261
Author(s):  
Edna Teles dos Santos ◽  
Leilane Rocha Barros Dourado ◽  
Flávio Ferreira da Silva ◽  
Regina Fialho De Sousa ◽  
Stélio Pinheiro Bezerra de Lima ◽  
...  
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Average Weight ◽  
Feed Conversion ◽  
Carcass Yield ◽  
Performance Variables ◽  
Randomized Design ◽  
Ad Libitum ◽  
Completely Randomized Design

This study aimed to evaluate the effects of feeding plans with or without addition of glycerin, in different ages, on performance, carcass yield, litter moisture and footpad lesions of broiler chickens. 540 male Cobb broilers were utilized, distributed in a completely randomized design with six treatments (treatments consisted of the inclusion or not of glycerin in diets at all periods or only at different stages: 1 to 7, 8 to 21, 22 to 33 and 34 to 42 days), in six replicates of 15 birds each. Diets were provided ad libitum. At 42 days, the average weight, weight gain, feed intake, feed conversion, carcass yield, litter moisture and footpad lesions were evaluated. There was no effect (p> 0.05) of dietary plans on the performance variables. The feeding plans did not influence (p>0,05) the carcass and cuts parameters at 42 days. However, there was significant effect (p <0.05) of the dietary plans on litter moisture and plantar lesions. Effects were observed (p>0,001) for the feeding plans, were the highest and the lowest incidence of lesions were present in the birds that consume diets with and without addition of glycerin, in the period from 1 to 42 days of age, respectively.

scholarly journals Effect of stocking density on performance, carcass yield, productivity, and bone development in broiler chickens Cobb 500®

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2705
Author(s):  
Cleoneide Dos Santos Henrique ◽  
Andréia Fróes Galuci Oliveira ◽  
Thales Silva Ferreira ◽  
Eduardo Santos Silva ◽  
Bruna Finotti Fonseca Reis de Mello ◽  
...  
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Bone Development ◽  
Stocking Density ◽  
Live Weight ◽  
Feed Conversion ◽  
Randomized Design ◽  
Total Phase ◽  
Completely Randomized Design

This study aimed to assess the effect of stocking density of 10, 12, 14, and 16 birds m?2 on performance, carcass and cut yields, productivity, and bone development of broiler chickens Cobb 500®. The experimental design was completely randomized design with four treatments (stocking densities) and four replications. The assessments were performed weekly at 1, 7, 14, 21, 28, 35, and 42 days. The best live weight result was found at a density of 10 birds m?2 in the period from 1 to 7 days. No effect of density was observed on feed intake and weight gain. From 1 to 14 days, the best live weights were found at densities of 10, 12, and 14 birds m?2, in addition to a higher feed intake at densities of 10 and 12 birds m?2. Weight gain was better at a density of 10 birds m?2, showing no differences from densities of 12 and 14 birds m?2. In the period from 1 to 21 days, live weight and weight gain were higher at densities of 10, 12, and 14 birds m?2. The highest feed intake was observed at a density of 10 birds m?2, which showed no difference from the density of 14 birds m?2. A difference (P < 0.05) was observed for live weight, weight gain, and feed intake of animals reared at densities of 10, 12, and 14 birds m?2 for the phases from 1 to 35 days and the total phase from 1 to 42 days of bird age when compared to 16 birds m?2, which presented lower performance. However, feed conversion of 1-7, 1-14, 1-21, 1-35, and 1-42 days and carcass and cut characteristics showed no significant differences for all treatments. On the other hand, productivity was higher in the treatments with 14 and 16 birds m?2, but without difference between each other. No interaction (P > 0.05) was observed between stocking density and age for the assessed bone parameters. Similarly, no difference (P > 0.05) was observed for bone development of broiler chickens reared at different stocking densities for the studied parameters. Thus, the increased density of 10 or 12 birds m?2 to 14 birds m?2 has no influence on zootechnical performance, carcass and cut yields, and bone development, but increases broiler chicken productivity reared in a conventional shed without air conditioning.

scholarly journals Effects of L-carnitine supplementation of diets differing in energy levels on performance, abdominal fat content, and yield and composition of edible meat of broilers

1998 ◽  
Vol 80 (4) ◽  
pp. 391-400 ◽  
Author(s):  
Mahmoud H. Rabie ◽  
Mihály Szilágyi
Keyword(s):  
Significant Interaction ◽  
Body Weight Gain ◽  
Energy Levels ◽  
Abdominal Fat ◽  
Metabolizable Energy ◽  
Dietary Energy ◽  
Carnitine Supplementation ◽  
Feed Conversion ◽  
Ad Libitum ◽  
Different Levels

Responses to supplemental dietaryl-carnitine of broilers fed on diets with different levels of metabolizable energy (ME) were investigated using growth performance and some carcass measurements. Three isonitrogenous diets containing 13.5, 12.8 or 12.2 MJ ME/kg were formulated, with or without supplementall-carnitine (50mg/kg) and fedad libitumfrom 18 to 53 d of age. Supplementall-carnitine increased body-weight gain (BWG) and improved feed conversion (FC) during the first 2 weeks of study. FC was also improved during the fourth week of the experiment. Weights of breast yield and thigh meat yield were significantly increased, whereas quantity and percentage of abdominal fat were reduced by supplementall-carnitine. A significant interaction between supplemental dietaryl-carnitine and dietary energy level was noted for BWG and FC during the second week of study.

scholarly journals +6282294617836

2019 ◽  
Vol 6 (3) ◽  
Author(s):  
Dora Villa Manik ◽  
Ma'ruf Tafsin ◽  
Armyn Hakim Daulay ◽  
Nurzainah Ginting ◽  
Hasnudi
Keyword(s):  
Broiler Chickens ◽  
Body Weight Gain ◽  
Animal Husbandry ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Study Program ◽  
E Coli ◽  
Feed Cost ◽  
Randomized Design ◽  
Completely Randomized Design

DORA VILLA MANIK, 2018. "Effectiveness of Gambir Solution (UncariagambirRoxb) on the Performances of Broiler Chickens Infected by Escherichia coli".Supervised by MA'RUF TAFSIN and ARMYN HAKIM DAULAY. Gambir has the potential as an antibacterial which is traditionally used as a drug for diarrhea. This study examines the effectiveness of gambir solution on performance which includes feed consumption, body weight gain, feed conversion and income over feed cost (IOFC) in broiler chickens infected with E. coli. It was held in November - December 2017 at the Laboratory of Biology, Animal Husbandry Study Program, Faculty of Agriculture University of Sumatera Utara, using a completely randomized design (CRD) with 6 treatments and 3 replications. The treatment consisted of P0A = without infection and without treatment, P0B = infection with E. coli and P1, P2, P3, respectively E. coli infection + Gambir solution 2%, 4%, 6% and P4 = E. coli + infection Tetracycline antibiotics. The results showed that the administration of gambir solution at a dose of 2% - 6% was significantly (P<0.05) effective in improving the performances of broiler chickens infected with E.coli and able to compensate for the use of commercial antibiotics in the form of tetracycline. The highest IOFC is in the 4% gambir solution.

scholarly journals Energetic values and performace of broilers feeding sorghum and soybean meal based diets supplemented with B-glucanase and B-xylanase

2016 ◽  
Vol 37 (2) ◽  
pp. 959
Author(s):  
Evandro De Abreu Fernandes ◽  
Maria Inês Homsi Brandeburgo ◽  
Carolina Magalhães Caires Carvalho ◽  
Fernanda Heloisa Litz ◽  
João Paulo Rodrigues Bueno ◽  
...  
Keyword(s):  
Gastrointestinal Tract ◽  
Enzymatic Activity ◽  
Soybean Meal ◽  
Metabolizable Energy ◽  
Feed Conversion ◽  
Significance Level ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Enzymatic Complex ◽  
Metabolic Test

Grains, brans, and vegetable meals may contain non-starch polysaccharides (NSP), which increases viscosity in the gastrointestinal tract (GIT) and interfere with the digestion and absorption of nutrients. This study aimed to evaluate the performance and determine the metabolizable energy of a sorghum-based broiler diet with and without the supplementation of an enzymatic complex. The experiments were conducted in a completely randomized design with 1200 chickens, using sorghum-based feed with and without the addition of 50 g of enzyme-CCE complex (?-glucanase and ?-xylanase), and with two levels of metabolizable energy (ME kg-1): ME; ME + CCE; reduced ME (-50 kcal kg-1); and reduced ME + CCE. The data were subjected to an analysis of variance and the means were compared using a Tukey’s test at the 5% significance level. At 42 and 47 days of age, the living weight of the birds fed with the reduced ME was low, while birds fed with reduced ME + CCE had the same weight as those fed with other energy diets (ME and ME + CCE). Feed conversion was poorest at 47 days of age for the birds on reduced ME diet. In the metabolic test (with fattening diets) to determine AME and AMEn, the reduced ME diet had the lowest result, confirming the effect of the addition of enzymes. The addition of CCE to sorghum-based diets provides enough enzymatic activity to increase the metabolizable energy of the diet (50 kcal of AME) and influence the growth performance of broilers at the slaughtering age.

Sign in / Sign up

Export Citation Format

Share Document