scholarly journals Effect of Feeding Low Protein Diets on the Production Traits and the Nitrogen Composition of Excreta of Broiler Chickens

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 781
Author(s):  
Nikoletta Such ◽  
László Pál ◽  
Patrik Strifler ◽  
Boglárka Horváth ◽  
Ilona Anna Koltay ◽  
...  
Keyword(s):  
Uric Acid ◽  
Broiler Chickens ◽  
Dietary Treatment ◽  
Production Traits ◽  
Feed Conversion ◽  
Total N ◽  
Treatment Groups ◽  
Low Protein ◽  
Dietary Treatments ◽  
Protein Reduction

The main goal of the current study was to investigate the effects of feeding low protein (LP) diets on the performance parameters and excreta composition of broiler chickens. In total, 288 male Ross 308 day-old chickens were divided into two dietary treatment groups using six replicate pens with 24 chickens each. No LP diet was fed in the starter phase. The protein reduction in the grower and finisher phases were 1.8% and 2% respectively. Beside the measurements of production traits, on day 24 and 40 representative fresh excreta samples were collected, their dry matter, total N, NH4+-N and uric acid-N contents determined, and the ratio of urinary and fecal N calculated. Dietary treatments failed to cause significant differences in the feed intake, growth rate, and feed conversion ratio of animals. LP diets decreased the total nitrogen and uric acid contents of excreta significantly. The age of birds had also significant effect, resulting more reduction in the grower phase compared with the finisher. The ratio of urinary N was higher at day 40 compared with the age of day 24. The urinary N content of broiler chicken’s excreta is lower than can be found in the literature, which should be considered in the ammonia inventory calculations.

scholarly journals Influence of L-lactic acid on the efficacy of microbial phytase in broiler chickens

2011 ◽  
Vol 49 (No. 10) ◽  
pp. 436-443 ◽  
Author(s):  
P. Zobač ◽  
I. Kumprecht ◽  
P. Suchý ◽  
E. Straková ◽  
J. Brož ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Broiler Chickens ◽  
Standard Diet ◽  
Feed Conversion ◽  
Low Protein ◽  
Final Weight ◽  
Microbial Phytase ◽  
Dietary Treatments ◽  
Protein Diets ◽  
Growth Trial

Two growth trials and a short-term metabolism trial were conducted in broiler chickens in the period of 22 to 42 days of age in order to evaluate the effects of two dietary levels of L-lactic acid (1.03 or 2.06 g/kg) and microbial 6-phytase (750 U/kg), added either separately or in combination, on growth rate, feed conversion, dressing percentage and utilization of selected nutrients. In the first growth trial, six different dietary treatments were added to a basal grower diet containing 19.4% crude protein and a reduced level of dietary phosphorus (P) (5.9 g total and 2.9 g non-phytate P per kg). Single administration of L-lactic acid did not show any positive effect on the growth rate or feed conversion. In contrast, phytase addition to a low-P grower diet resulted in the increased final weight of birds and higher feed conversion. This beneficial effect was markedly stronger when the microbial phytase was added to the diets containing L-lactic acid. Based on two-factor analysis of variance, microbial phytase significantly increased the mean final weight by 6.5% (P < 0.01) and significantly improved feed conversion from 1.877 to 1.829 (P < 0.05). In the second growth trial, the same six dietary treatments were added to a basal diet containing a standard level of dietary P (6.7 g total and 4.0 g non-phytate P per kg), but the level of crude protein was reduced to 17.0%. L-lactic acid alone did not show any positive effects on performance. Phytase supplementation alone resulted in numerical improvement of the final weight (+1.1–2.4%), but a higher effect was observed in the diets containing L-lactic acid. In agreement with the reduced final weights of broilers fed the low-protein diets, markedly higher values of feed/gain ratio were noted. In the metabolism trial, selected dietary treatments were involved to evaluate the effects of L-lactic acid and microbial phytase, added either separately or in combination, on the digestibility of nitrogen (N) and fat as well as on the retention and excretion of N and P. Apparent digestibility of N and fat in the low-P diets was not affected by dietary treatments. Retention and utilization of N were numerically higher in all treatments fed low-P diets when compared to the treatment fed a standard diet, but the differences were not significant. Retention of P was numerically higher in all treatments fed low-P diets. When compared to the standard diet, the combination of phytase and L-lactic acid increased daily P retention by 37.6%. P excretion was significantly (P < 0.05) reduced in all treatments fed low-P diets supplemented by both test products, either separately or in combination. A numerical decrease in N excretion was noted in both treatments fed low-protein diets.    

Effects of prebiotics on intestinal histo-morphometry and gut microflora status of broiler chickens

2018 ◽  
Author(s):  
A. Biswas ◽  
R. Messam ◽  
M. Kumawat ◽  
M. Namit ◽  
A.B. Mandal ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Dietary Treatment ◽  
Basal Diet ◽  
Feed Additive ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Gut Health ◽  
Treatment Groups ◽  
Dietary Treatments ◽  
Soybean Diet

A feeding trial was conducted to assess the effect of prebiotics on intestinal histo-morphometry and gut health status of broiler chickens. A total number of 240 day-old broiler chicks were randomly assigned to six dietary treatment groups having five replicates each with eight birds per replicate for six weeks. A basal corn-soybean diet was formulated that served as control (T1). The rest five test dietary treatments were prepared by adding antibiotic (bacitracin methylene di-salicylate-BMD at 0.002% of diet (T2), prebiotics i.e., mannan oligosaccharides (MOS) at 0.1% or 0.2% (T3 and T4) and fructo oligosaccharides (FOS) at 0.1% or 0.2% (T5, T6 respectively) with basal diet. Total anaerobes counts were significantly (P LESS THAN 0.05) reduced at 21 and 42 d at ileum in T2, T3 and T4 groups whereas, coliforms count were reduced (P LESS THAN 0.05) in T2 and T3 groups. However, lactic acid bacteria (LAB) count were significantly (P Less than 0.05) increased in T3 and T4 groups but lactobacillus count were increased (P less than 0.05) in only T3 group at 21 and 42 d in ileum. Villus height (VH) and width (VW) were significantly increased (P less than 0.05) at 21d and 42 d in T3 and T4 groups, whereas, at 21 d, crypt depth (CD) were increased (P less than 0.05) in T3 and T4 groups but at 42 d, CD were significantly improved in T3 and T4 or T5 and T6 groups. No significant (P>0.05) differences were observed in ratio between VH and CD at 21d or 42 d. Thus, it might he concluded that 0.1% or 0.2% MOS inclusion in basal diet improved intestinal histo-morphometry and gut health in broiler chickens and it is a better alternate feed additive to replacement of antibiotic growth promoter.

scholarly journals Effect of Nanosilica and Bentonite as Mycotoxins Adsorbent Agent in Broiler Chickens’ Diet on Growth Performance and Hepatic Histopathology

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 2129
Author(s):  
Abdallah A. Ghazalah ◽  
Mamduh O. Abd-Elsamee ◽  
Kout Elkloub M. E. Moustafa ◽  
Mohamed Abdelrazik Khattab ◽  
Abd-Elrahim A. A. Rehan
Keyword(s):  
Growth Performance ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Control Diet ◽  
Dietary Treatment ◽  
Control Group ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Four Levels ◽  
Hepatic Histopathology

Mycotoxins are toxic secondary metabolites produced by different strains of fungi, such as aspergillus, fusarium, and penicillium that can contaminate feed ingredients or the entire feed of poultry and animals. Mycotoxins can cause many serious complications to both humans and animals due to carcinogenic, mutagenic, and immunosuppressive disorders. Therefore, the present experiment aims to investigate the effect of broiler chickens’ diets supplemented with different levels of nanosilica (NS) as an adsorbent agent of mycotoxins on their growth performance and hepatic histopathology. Detectable levels of toxins were present in the feed before feeding, and all levels of mycotoxins were above the normal limit. A total of 180 one-day-old male Arbor Acres broiler chickens were allocated randomly to six treatment groups with three replicates per group, including ten chickens per replicate. The experiment lasted for five weeks, and dietary treatments included control diet and diets with four levels of nanosilica as 0.05%, 0.10%, 0.15%, and 0.20% as well as 0.50% bentonite (fixfin® Dry) diet. Bodyweight, body weight gain, average daily feed intake, and feed conversion ratio were measured weekly. At the end of the fifth week, six chickens per treatment were sacrificed to investigate the effects of NS and bentonite on carcass characteristics and hepatic histopathology. The results showed that providing broiler chickens’ diets with an adsorbent agent, such as NS or bentonite, can reduce the side effects of mycotoxins and enhance their growth performance. The best record was achieved with NS at 0.20%, compared with the control group and other dietary treatment groups. Accordingly, 0.20% of NS could be used in broiler chickens’ diets to minimize the harmful effects of mycotoxins.

scholarly journals Performance of broiler chickens fed graded dietary levels of toasted jackfruit seed meal (Artocarpus heterophyllus)

2020 ◽  
Vol 46 (4) ◽  
pp. 171-178
Author(s):  
A. S. Eburuaja ◽  
R. S. Onabanjo ◽  
D. N. Onunkwo ◽  
U. S. Ukenye
Keyword(s):  
Broiler Chickens ◽  
Live Weight ◽  
Seed Meal ◽  
Feed Conversion ◽  
Gross Margin ◽  
Artocarpus Heterophyllus ◽  
Treatment Groups ◽  
Randomized Design ◽  
Dietary Treatments ◽  
The Cost

Effect of toasted jackfruit (Artocarpus heterophyllus) seed meal (TJSM) on performance of 120 2 weeks old broiler chickens was investigated. The birds were divided into four dietary treatments having 3 replicates and 10 birds per replicate in a completely randomized design. Diet one (T) was soybean based while toasted JFSM meal was added to diets 2 (T), 3 (T) 1 2 3 and 4 (T) at 5, 10 and 15% levels of inclusion, respectively. Growth performance was 4 generally depressed with increased inclusion of toasted JFSM in the diets. Feed conversion ratio of birds fed T and T were the same and significantly better (P>0.05) than those of the 1 2 remaining treatment groups. Birds fed T had significantly higher values of live weight, 1 dressed weight and dressing percentage followed by birds fed T. The prime cut parts were 2 similar in all the treatment groups. Organ proportions showed no significant differences across the treatment groups except the spleen. Cost per kg feed decreased with increased inclusion of TJSM. The cost of feed consumed was higher (P>0.05) in T (531.29) but 1 decreased with increased inclusion of TJSM. The cost per kg weight gain, cost of production and revenue were similar across the treatment groups with birds fed T significantly higher 1 (P>0.05) than the remaining treatment groups. The gross margin obtained for birds fed T 1 and T are comparable and higher than other treatment groups. From the foregoing TJFSM is 2 a potential feed resource and could be included in the diet of broiler chickens up to 5% inclusion level.

Influence of a combination of formic and propionic acids added to wheat- and barley-based diets on the performance and gut histomorphology of broiler chickens

2007 ◽  
Vol 55 (4) ◽  
pp. 479-490 ◽  
Author(s):  
N. Senkoylu ◽  
H. Samli ◽  
M. Kanter ◽  
Aylin Agma
Keyword(s):  
Broiler Chickens ◽  
Body Weight Gain ◽  
Dietary Treatment ◽  
Control Group ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Villus Height ◽  
Nutrient Density ◽  
Dietary Treatments ◽  
Different Levels

Day-old male chicks were used to test the effects of a combination of formic and propionic acids (CFP) added to wheat- and barley-based diets on the performance and gut histomorphology of broilers. The CFP, containing formic and propionic acids based on an inorganic phyllo-silicate carrier, was added to starter and grower broiler diets of standard (NRC, 1994) or lower nutrient density (LND) using different levels of wheat and barley. Body weight gain (BWG) and feed conversion ratio (FCR) of broiler chicks were significantly (P < 0.001) improved by CFP supplementation at 21 days of age regardless of nutrient density (ND). However, at 35 days of age CFP addition significantly (P < 0.001) increased BWG and FCR. Proventriculus weight was also significantly affected by the dietary treatments. Ileal viscosity was significantly (P < 0.05) affected by ND which was associated with wheat and barley contents, whereas feed viscosity was significantly (P < 0.05) affected by CFP supplementation. Villus height was significantly (P < 0.05) increased by the CFP supplementation. In the case of villus width, an interaction effect was observed: there was a significant (P < 0.05) decrease in the group fed the standard ND diet, but only a numerical decrease in the group fed the LND diet compared to control group. No significant effect of dietary treatment on the thickness of the lamina muscularis mucosae could be detected.

Effect of processed doum palm (Hyphaene thebaica) pulp meal on growth performance, nutrient digestibility, carcass characteristics and haematological indices of broilers

2021 ◽  
pp. 182-187
Author(s):  
Ibe Emmanuel Agwor ◽  
◽  
Kudu Yahaya Salihu ◽  
Bisi Alex Ayanwale ◽  
Malik Abdulganiyu Ayodele ◽  
...  
Keyword(s):  
Growth Performance ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Carcass Characteristics ◽  
Nutrient Digestibility ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Carcass Parameters ◽  
Dietary Treatments ◽  
Haematological Indices

The increase in human population, particularly in the developing countries like Nigeria and the demand for animal protein intake has necessitated different approaches of solving protein shortage. A 28-day study was carried out to determine the performance of finishers fed on different hourly soaked doum palm (Hyphaene thebaica) pulp meal (DPPM) diets. Two hundred and sixteen (216) finishers (4 week-old) were randomly allotted to six dietary treatments. Each treatment consisted of 36 birds with three replicates (12 birds per replicate) in a completely randomized design (CRD). Six experimental diets were formulated and designed as follows: T1 (Control) contained 0% DPPM while T2, T3, T4, T5 and T6 contained 12.5% each of 2, 4, 6, 8 and 10 hours soaked DPPM as substitute for maize, respectively. Feeds and water were provided ad libitum for all treatment groups. The average body weight gain (40.44- 42.71 g/b/d), average feed intake (87.52-96.73 g/b/d) and feed conversion ratio (2.14-2.34) were non-significant (p>0.05) regardless of the dietary treatments. Statistical differences (p<0.05) were observed in some carcass parameters such as thigh (13.40-14.98%), neck (5.32-6.55%), shank (3.81-5.2 %), wing (9.80-11.41%), head (2.43-3.74%) and two haematological indices; white blood cell (160.67-189.53 X 103/mm3) and eosinophils (0.33-2.00%) across the treatment groups. The processed DPPM could serve as a rich energy source in broiler feeds with the raw doum palm pulp containing 2987.45 kcal/kg. Also, soaking the pulp for 2 to 10 hours before been included in broiler diet improved the nutritional content, acceptability, palatability and utilization of the feed by the broilers. Thus, up to 12.5% processed DPPM can be included in the diets of broiler chickens without adverse effect on growth performance, nutrient digestibility, carcass characteristics and haematological indices of chickens.

scholarly journals Blood chemistry and carcass characteristics of finisher broiler chickens fed Malted Sorghum sprout (MSP) or Wheat-offal based diets supplemented with yeast culture and enzyme

2021 ◽  
Vol 43 (2) ◽  
pp. 351-360
Author(s):  
F. O Oke ◽  
O. O Oluwatosin ◽  
S. O Obadire ◽  
V. A Jegede ◽  
A. O Fafiolu ◽  
...  
Keyword(s):  
Uric Acid ◽  
Total Protein ◽  
Broiler Chickens ◽  
Carcass Characteristics ◽  
Dietary Treatment ◽  
Blood Chemistry ◽  
Yeast Culture ◽  
Feeding Trial ◽  
Blood Indices ◽  
Treatment Groups

This experiment was conducted to determine the blood chemistry and carcass characteristics of broilers fed malted sorghum sprouts (MSP) or wheat offal (W/O)-based diets supplemented with yeast culture and enzyme. A total of two hundred and forty 28-day old, Marshal Broiler chickens used for the experiment were randomly allotted to 8 dietary treatment groups of 30 birds each. Each treatment group was replicated thrice with 10 birds per replicate. Data on selected blood indices and carcass traits of the birds were collected during the course of the feeding trial that lasted for 4 weeks. The experiment was a 2X4 factorial consisting of two (2) test ingredients (MSP and wheat offal) at 4 inclusion levels of enzyme or yeast (0g kg-1, +0.01gkg-1 yeast and Roxazyme G2(G) enzyme, +0.01gkg-1  yeast ,+ Roxazyme G2(G)  enzyme. At the end of the trial, the effect of MSP and wheat offal inclusion showed a significant effect (P<0.05) for uric acid, WBC, Total protein, albumin and globulin. However, uric acid, total protein, Albumin and Globulin were highest for wheat offal diet. Furthermore, the results show that values obtained for white blood cell, uric acid, total protein, albumin, globulin, creatinine, ALT& AST were significantly (P<0.05) affected by the enzyme, yeast and their combination. The carcass results show that none of the parameters measured differed significantly. In conclusion, supplementation with yeast + enzyme improves total protein, albumin and globulin. Meanwhile, it reduced concentrations of uric acid, ALT and AST by broiler chickens. Therefore MSP diet should be supplemented with yeast+ enzyme or enzyme singly to improve Livestock ration for better utilisation.

scholarly journals Effect of Low‑ And High Phytase Barley on Phosphorus Retention and Bone Mineral Composition in Broilers

2017 ◽  
Vol 65 (2) ◽  
pp. 577-581 ◽  
Author(s):  
Jiří Zelenka ◽  
Eva Mrkvicová ◽  
Ondřej Šťastník ◽  
Monika Jarošová ◽  
Tomáš Vlčko ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Body Weight Gain ◽  
Spring Barley ◽  
Dietary Treatment ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Low Phosphorus ◽  
Calcium Phosphorus ◽  
Time Of Feeding ◽  
Sodium And Potassium

The effects of low‑phosphorus diets with two levels of phytase were examined in broiler chickens using eight replicates per treatment. The diets contained 40 % of spring barley with either 201 or 305 phytase activity units per kg. Chromic oxide was included in the diets as an indigestible marker. Excreta were collected during four consecutive three‑day balance periods from the 12thto the 23rdday of age. No difference was observed for body weight gain between the dietary treatment groups but feed conversion ratio was better (P < 0.05) when higher phytase barley was used. In spite of the higher dietary level of phosphorus, the coefficient of apparent P retention was higher (P < 0.01) in higher than in lower phytase group. The retention of phosphorus increased (P < 0.01) with time of feeding in both low‑phosphorus dietary groups. Differences between treatments in concentration of calcium, phosphorus, magnesium, sodium and potassium in defatted tibia were not significant (P > 0.05).

scholarly journals Effects of Lactobacillus reuteri and Streptomyces coelicolor on Growth Performance of Broiler Chickens

2021 ◽  
Vol 9 (6) ◽  
pp. 1341
Author(s):  
Sarayu Bhogoju ◽  
Collins N. Khwatenge ◽  
Thyneice Taylor-Bowden ◽  
Gabriel Akerele ◽  
Boniface M. Kimathi ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Lactobacillus Reuteri ◽  
Body Weight Gain ◽  
Streptomyces Coelicolor ◽  
Control Diet ◽  
Probiotic Bacteria ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Wheat Middlings ◽  
Dietary Treatments

There are well documented complications associated with the continuous use of antibiotics in the poultry industry. Over the past few decades, probiotics have emerged as viable alternatives to antibiotics; however, most of these candidate probiotic microorganisms have not been fully evaluated for their effectiveness as potential probiotics for poultry. Recent evaluation of a metagenome of broiler chickens in our laboratory revealed a prevalence of Lactobacillus reuteri (L. reuteri) and Actinobacteria class of bacteria in their gastrointestinal tract. In this study Lactobacillus reuteri and Streptomyces coelicolor (S. coelicolor) were selected as probiotic bacteria, encapsulated, and added into broiler feed at a concentration of 100 mg/kg of feed. In an 8-week study, 240 one day-old chicks were randomly assigned to four dietary treatments. Three dietary treatments contained two probiotic bacteria in three different proportions (L. reuteri and S. coelicolor individually at 100 ppm, and mixture of L. reuteri and S. coelicolor at 50 ppm each). The fourth treatment had no probiotic bacteria and it functioned as the control diet. L. reuteri and S. coelicolor were added to the feed by using wheat middlings as a carrier at a concentration of 100 ppm (100 mg/kg). Chickens fed diets containing L. reuteri and S. coelicolor mixture showed 2% improvement in body weight gain, 7% decrease in feed consumption, and 6–7% decrease in feed conversion ratios. This research suggests that L. reuteri and S. coelicolor have the potential to constitute probiotics in chickens combined or separately, depending on the desired selection of performance index.

scholarly journals Dietary purslane (Portulaca oleracea L.) promotes the growth performance of broilers by modulation of gut microbiota

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Cong Wang ◽  
Qing Liu ◽  
Fengchun Ye ◽  
Hongbo Tang ◽  
Yanpeng Xiong ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Growth Performance ◽  
Basal Diet ◽  
Scientific Basis ◽  
Control Group ◽  
Good Growth ◽  
Feed Conversion ◽  
Illumina Hiseq ◽  
Treatment Groups ◽  
Dietary Treatments

AbstractPurslane is a widespread wild vegetable with both medicinal and edible properties. It is highly appreciated for its high nutritional value and is also considered as a high-quality feed resource for livestock and poultry. In this study, Sanhuang broilers were used to investigate the effect of feeding purslane diets on the growth performance in broilers and their gut microbiota. A total of 48 birds with good growth and uniform weight were selected and randomly allocated to four treatment groups A (control), B, C and D. Dietary treatments were fed with basal diet without purslane and diets containing 1%, 2% and 3% purslane. The 16S rDNA was amplified by PCR and sequenced using the Illumina HiSeq platform to analyze the composition and diversity of gut microbiota in the four sets of samples. The results showed that dietary inclusion of 2% and 3% purslane could significantly improve the growth performance and reduce the feed conversion ratio. Microbial diversity analysis indicated that the composition of gut microbiota of Sanhuang broilers mainly included Gallibacterium, Bacteroides and Escherichia-Shigella, etc. As the content of purslane was increased, the abundance of Lactobacillus increased significantly, and Escherichia-Shigella decreased. LEfSe analysis revealed that Bacteroides_caecigallinarum, Lachnospiraceae, Lactobacillales and Firmicutes had significant differences compared with the control group. PICRUSt analysis revealed bacteria mainly enriched in carbohydrate metabolism pathway due to the additon of purslane in the diet. These results suggest that the addition of purslane to feed could increase the abundance of Lactobacillus in intestine, modulate the environment of gut microbiota and promote the metabolism of carbohydrates to improve its growth performance. This study indicates that the effect of purslane on the growth-promoting performance of broilers might depend on its modulation on gut microbiota, so as to provide a certain scientific basis for the application of purslane in the feed industry.

Sign in / Sign up

Export Citation Format

Share Document