scholarly journals Composition and availability of nutrients of three corn hybrids dried at different temperatures in the diets of broiler chickens

2021 ◽  
Vol 50 ◽  
Author(s):  
Franciele Clenice Navarini Giacobbo ◽  
Cinthia Eyng ◽  
Ricardo Vianna Nunes ◽  
Levy do Vale Teixeira ◽  
Cleison de Souza ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Corn Hybrids ◽  
Different Temperatures

scholarly journals Influence of Enzyme Supplementation in the Diets of Broiler Chickens Formulated with Different Corn Hybrids Dried at Various Temperatures

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 643
Author(s):  
Franciele C. N. Giacobbo ◽  
Cinthia Eyng ◽  
Ricardo V. Nunes ◽  
Cleison de Souza ◽  
Levy V. Teixeira ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Nutrient Digestibility ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Intestinal Morphology ◽  
Feed Conversion ◽  
Corn Hybrids ◽  
Positive Effects ◽  
Cecal Microbiota ◽  
Enzyme Supplementation

We evaluated the influence of enzymatic supplementation on the growth performance and cecal microbiota of broilers. A total of 2160 1-day-old male chicks were used in a 3 × 2 × 2 factorial arrangement (three corn hybrids, two drying temperatures −80 and 110 °C, with or without the inclusion of an enzymatic blend (amylase, xylanase, and protease) (20 birds/pen, n = 9). For all performance and digestibility parameters, we observed, in general, isolated effects of the corn hybrids and drying temperature. Birds that received the enzymatic blend in the diet showed better weight gain from 1 to 21 days (d) and better digestibility coefficients of nutrients at 42 d. Birds fed diets with corn dried at 80 °C showed a better feed conversion ratio from 1 to 42 d. At 21 d of age, enzymatic supplementation had positive effects on jejunum morphology. Enzyme supplementation increased the abundance of the phylum Tenericutes, class Bacilli and Mollicutes, reduced Clostridia, and increased the abundances of the families Lactobacillaceae, Anaeroplasmataceae, and O_RF39;F. In conclusion, the addition of amylase, xylanase, and protease led to a better nutrient digestibility, performance, and intestinal morphology. In addition, enzyme supplementation changed the diversity, composition, and predicted function of the cecal microbiota at d 21.

scholarly journals AVALIAÇÃO DE DIFERENTES FONTES E NÍVEIS DE SELÊNIO PARA FRANGOS DE CORTE EM DIFERENTES TEMPERATURAS

2005 ◽  
Vol 10 (1) ◽  
Author(s):  
F. DAHLKE ◽  
E. GONZALES ◽  
R.L. FURLAN ◽  
A.C. GADELHA ◽  
A. MAIORKA ◽  
...  
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Feed Conversion ◽  
Broiler Performance ◽  
Randomized Design ◽  
De Se ◽  
Different Temperatures ◽  
Environmental Temperatures ◽  
Different Sources

Foram avaliados os parâmetros zootécnicos de frangos de corte alimentados com dietas suplementadas com diferentes fontes e níveis de selênio (Se), criados sob diferentes condições de temperatura. Foram utilizados 720 pintainhos, Cobb-500, em um delineamento inteiramente ao acaso em esquema fatorial 3 x 2 x 2 (3 temperaturas ambiente: termoneutra, fria e quente; 2 níveis de suplementação de Se: nível A e B; e 2 fontes de Se: orgânica e inorgânica), com 4 repetições de 15 aves. Os níveis A e B de Se na ração inicial (1 a 21 dias) e de crescimento (22 a 42 dias) foram 0,15 e 0,30 mg/kg e 0,20 e 0,40 mg/kg, respectivamente. Selenometionina foi usada como fonte de Se orgânico e selenito de sódio, inorgânico. Os frangos criados em condições de estresse por calor apresentaram uma redução no consumo de ração e ganho de peso. Não houve influência da suplementação das diferentes fontes ou níveis de Se no ganho de peso, consumo de ração ou conversão alimentar. Os resultados são indicativos de que a suplementação de Se não melhora o desempenho de frangos de corte criados em condições de temperatura adversa. Evaluation of different sources and selenium levels for broilers at different temperatures Abstract This study evaluated the effect of selenium (Se) diet supplementation on productive parameters of broiler chickens raised under different temperatures, in a complete randomized design with 3 x 2 x 2 factorial schedule (3 environmental temperatures: cold, neutral and hot; 2 levels and two Se sources) with 4 repetitions of 15 birds. The levels of Se in rations for initial and growth phases were: 0.15 and 0.30 mg/kg; and 0.20 and 0.40 mg/kg, respectively. The organic and inorganic sources of selenium were selenomethionine and sodium selenite, respectively. There were a reducing in broiler feed intake and weight gain of the broilers housed in the hot temperature. Selenium levels or sources did not affect the weight gain, feed intake or feed conversion. It was concluded that Se supplementation did no affect the broiler performance, housed under adverse environmental temperature.

scholarly journals Assessment of Physicochemical Characteristics and Microbiological Quality in Broiler Chicken Breast Muscle (Pectoralis major) Subjected to Different Temperatures and Lengths of Cold Transportation

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 874
Author(s):  
Muhammad Nizam Hayat ◽  
Ubedullah Kaka ◽  
Awis Qurni Sazili
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Food Poisoning ◽  
Microbiological Quality ◽  
Physicochemical Characteristics ◽  
Left Breast ◽  
Breast Muscle ◽  
Chicken Breast ◽  
Different Temperatures ◽  
The Impact

Cold truck transportation is considered one of the most integral parts in a food processing chain. However, countless cases of product spoilage and food poisoning incidents have proven that temperature control during transport has been neglected. Literature on the impact of temperature during distribution is scarce. The objective of this study was to investigate the impact of various transportation temperatures and travel duration on the meat quality and microbial population of broiler chicken breast muscle. Sixty broiler chickens (42 days old) were slaughtered and eviscerated; they then had their breast muscles removed (each bird provided two breast muscle samples: left breast and right breast), which were wrapped in plastic film. All 120 packed boneless breasts (PBBs) were then placed at −18 °C for 24 h. After 24 h, the 60 PBB samples were subjected to transportation for 1 h at 4 °C (20 PBBs), 10 °C (20 PBBs), and 15 °C (20 PBBs) while the remaining 60 samples were transported for 5 h at 4 °C (20 PBBs), 10 °C (20 PBBs), and 15 °C (20 PBBs) before analyses. The samples transported at higher temperatures exhibited higher populations of coliform and Salmonella than those transported at lower temperatures. A significant impact of the transportation duration on the Salmonella population was only observed in samples transported at 4 °C for 5 h. However, a significant impact of transportation temperature on color was only recorded for the redness (a*) values, where the samples transported at higher temperatures exhibited higher redness (a*) values. Significant increases in lightness (L*) and yellowness (b*) values as well as decreases in redness (a*) and pH values were recorded in samples subjected to longer durations of transportation across all the temperatures observed in this study.

scholarly journals Protein Mass and Calcium Mass of Broiler Chicken with Added Nucleotides at Different Maintenance Temperatures

2021 ◽  
Vol 16 (3) ◽  
pp. 233-238
Author(s):  
I. Rahmawati ◽  
L .D. Mahfudz ◽  
S. Kismiati
Keyword(s):  
Protein Content ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Calcium Content ◽  
The Body ◽  
Broiler Meat ◽  
Nucleotide Synthesis ◽  
Protein Mass ◽  
Randomized Design ◽  
Different Temperatures

This study aims to examine the effect of adding nucleotides in broiler rations on the protein mass and calcium mass of broiler chicken reared at different temperatures. The material used was 135 broiler chickens aged 15 days with a weight of 462.20 ± 9 grams of unsex Ross strain and nucleotides imported from China produced by CBH Co. Ltd., China. The study used a completely randomized design (CRD) with a 3x3 factorial pattern with 5 replications. The treatment was carried out at the age of 15-35 days. The treatment given was the first factor adding nucleotides (T0 = nucleotides 0 g/kg feed, T1 = nucleotides 0.5 g/kg feed, T2 = nucleotides 1 g/kg feed) and the second factor was temperature (Heat = S1 = 30 – 32?, Comfortable = S2 = 20 – 23?, Natural = S3 = 24 – 34?). Parameters observed were protein content, calcium content, protein mass, and calcium mass of broiler chicken meat. The research data were analyzed using the F test of variance analysis, if there was a real treatment effect, then Duncan's test was continued. The results showed that there was no interaction between the addition of nucleotides with different maintenance temperatures on protein content, calcium content, protein mass, and calcium mass of meat. Nucleotide 0.05 g had a significant effect (P<0.05) on the protein content of the meat, the natural rearing temperature significantly affected the calcium content of the meat and the comfortable temperature had a significant effect on the protein mass of broiler meat. This study concludes that the addition of 0.05 g of nucleotides can meet the needs of nucleotide synthesis in the body of broiler chickens by increasing the protein content of the meat.

scholarly journals Yeast extract and prebiotic in pre-initial phase diet for broiler chickens raised under different temperatures

2010 ◽  
Vol 39 (1) ◽  
pp. 165-174 ◽  
Author(s):  
Vanessa Karla Silva ◽  
Janaina Della Torre da Silva ◽  
Rodrigo Antonio Gravena ◽  
Rafael Henrique Marques ◽  
Fabricio Hirota Hada ◽  
...  
Keyword(s):  
Weight Gain ◽  
Yeast Extract ◽  
Initial Phase ◽  
Broiler Chickens ◽  
Phase 1 ◽  
Food Conversion ◽  
Carcass Yield ◽  
Impaired Performance ◽  
Different Temperatures ◽  
Intestinal Morphometry

The objective of this research was to evaluate the performance, carcass yield and intestinal morphometry of broiler chickens raised under different temperatures that received feed with or without yeast extract and prebiotic in the pre-initial phase. One thousand four hundred and forty one-day old male chicks were used, raised in different climate chambers. Feed with or without the addition of yeast extract and prebiotic was offered only in the pre-initial phase (1 to 7 days). From the eighth day on, every chick received the same feed, readjusted according to usual recommendations. A randomized complete experimental design was used in a 3 × 2 × 2 factorial arrangement, consisting of three environmental temperatures (hot, comfort and cold) and two levels of yeast extract (with or without) and prebiotic (with or without). The performance of the birds was evaluated considering weight gain, feed intake, food conversion and viability at 42 days of age. Carcass yield and intestinal morphometry were also evaluated. Environmental heat impaired performance and carcass yield. Prebiotic inclusion in the pre-initial feed increased weight gain and enhanced food conversion of birds raised under hot conditions. The inclusion of products in the feed of broiler chickens raised in hot and cold environments has beneficial effects on chicken intestinal villi.

The Microbiological Profile of Chilled and Frozen Chicken

2000 ◽  
Vol 63 (9) ◽  
pp. 1228-1230 ◽  
Author(s):  
J. S. BAILEY ◽  
B. G. LYON ◽  
C. E. LYON ◽  
W. R. WINDHAM
Keyword(s):  
Escherichia Coli ◽  
Broiler Chickens ◽  
Storage Temperature ◽  
Mesophilic Bacteria ◽  
Microbiological Profile ◽  
Different Temperatures ◽  
Phosphate Buffered Saline ◽  
Storage Temperatures

To determine the effect of different refrigeration and freezer temperatures on the microbiological profile of chicken, 50 commercially processed broiler chickens were each split in half on the day of processing. Equal groups were held at 4, 0, −4, −12, and −18°C (40, 32, 26, 10, and 0°F), respectively for 7 days. One half of each group was then transferred to a 0°F holding chamber for an additional 7 days. Carcass halves were rinse sampled with 100 ml of phosphate-buffered saline and the diluent sampled for mesophilic, psychrotropic, coliform, and salmonellae counts after the initial 7 days at different temperatures and after 7 additional days at −18°C. Ten carcass halves were sampled on the day of processing to give baseline counts. Mesophilic bacteria counts/ml were about log 4.6 on day 0, increased by 2 log after 7 days on carcasses held at 4°C, and were unchanged at all other storage temperatures. Psychrotropic counts/ml were about log 3.6 on day 0 and increased during the initial 7 days by about 3.9, 1.9, and 1.4 logs, respectively on carcasses held at 4, 0, and −4°C and had less than 1 log increase at −12 and −18°C. Coliform counts were about log 2.2/ml on day 0 and had declined to about log 1.5/ml or less by day 7 for all storage temperatures. Escherichia coli counts/ml were about log 2 on day 0 and were reduced about 1 log or more at other storage days. Salmonellae counts were about log 1.5 on salmonellae-positive carcasses and did not change appreciably at any storage temperature. No counts for any organism significantly changed after placement at −18°C.

scholarly journals Thermal comfort temperature update for broiler chickens up to 21 days of age

2013 ◽  
Vol 33 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Déborah C. Cassuce ◽  
Ilda de F. F. Tinôco ◽  
Fernando C. Baêta ◽  
Sérgio Zolnier ◽  
Paulo R. Cecon ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Regression Models ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Initial Period ◽  
Experimental Period ◽  
Environment Temperature ◽  
Different Temperatures ◽  
Growth Chambers ◽  
Production Conditions

Due to changes in genetics and nutrition, as well as in acclimatization of broiler chickens to the Brazilian climate, temperature values currently accepted as optimal may be outdated. The objective of this research was to update the environment temperatures that characterize the thermal comfort for broilers chickens from one to 21 days of age, under Brazilian production conditions. This research was conducted with 600 COBB birds, which were distributed in five growth chambers maintained at different temperatures during the first three weeks of age. During the experimental period, temperature values were progressively reduced, consisting in five treatments: T2724/21, T30/27/24, T33/30/27, T36/33/30 and T39/36/33. It was observed that the birds maintained in the T30(27-24) treatment presented better performance compared to other environment conditions. Based on the obtained regression models, the environment temperature values that provide greater weighing gain for the broiler chicken growth in the initial period were 31.3, 25.5 and 21.8 ºC, respectively for the first, second and third week of age.

scholarly journals Metabolizable energy of corn hybrids for broiler chickens at different ages

2011 ◽  
Vol 35 (6) ◽  
pp. 1218-1226 ◽  
Author(s):  
Reinaldo Kanji Kato ◽  
Antonio Gilberto Bertechini ◽  
Edison José Fassani ◽  
Jerônimo Avito Gonçalves de Brito ◽  
Solange de Faria Castro
Keyword(s):  
Broiler Chickens ◽  
Phase 1 ◽  
Energy Levels ◽  
Experimental Period ◽  
Metabolizable Energy ◽  
Experimental Unit ◽  
Study Phase ◽  
Corn Hybrids ◽  
Broiler Feed

We determined the values of apparent metabolizable (AME), apparent corrected (AMEn), true (TME) and true corrected (TMEn) energy of six corn hybrids for broiler chickens in phases 1-7, 8-14, 15-21, 22-28, 29-35 and 36-42 day-old birds, using the substitution method (40%) of reference diet with the test ingredient. Ross-308 male chicks (1,134) were allotted to metabolism cages and the number of birds per experimental unit was adjusted to suit each bird's density stage in the cage, using six replicates. Simultaneously, birds continue to fast for the determination of metabolic and endogenous losses for each study phase. The birds received water and food ad libitum during the experimental period. The birds were maintained in metabolism cages for seven days, four days for adaptation to the cage and food, and three days for excreta collection. The corn energy values were significantly lower only in the pre-initial phase (1-7 days). Thus, broiler feed formulations of AMEn values for corn of 3563 kcal/kg DM for 1 to 7 days and 3778 kcal/kg DM from 7-day-old birds are recommended.The agronomic characteristics of the corn had no influence on the birds energy levels.

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