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Animal nutrition studies Thai Agricultural
Prateap Rachapaetayakom.
20 tables
Palavras-chave: Chickens; Chicks; Corn; Maize; Opaque-2; Protein diet; Rations; Nutritive value; Varieties; Mycotoxin; Feed contamination; Growth; Animal performance; ข้าวโพด; ยีนโอเพค 2; โปรตีน; สูตรอาหาร; ลูกไก่; ไก่กระทง.
Ano: 1971 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3767
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Assessment of a natural, non-antibiotic blend on performance, blood biochemistry, intestinal microflora, and morphology of broilers challenged with Escherichia coli R. Bras. Zootec.
Manafi,Milad; Hedayati,Mahdi; Khalaji,Saeed; Kamely,Mohammad.
ABSTRACT The effect of a non-antibiotic growth-promoting component composed of natural phytomolecules, direct-fed microbials, glucomannan oligosaccharides, and organic acids on the performance, intestinal morphology and microbiology, plasma biochemistry, enzyme activities, visceral organ weights, and immune response of commercial broilers challenged with Escherichia coli was investigated. Three hundred and sixty one-day old male Ross 308 broiler chicks were randomly divided into basal diet (control, CON); control plus 0.5 mL of culture materials containing 108 cfu/mL of E. coli (E. coli); control with 400 mg/kg bacitracin methylene disalicylate (an antibiotic growth promoter, AGP); control plus 1000 g/t of feed of a blended mixture of natural feed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body weight; Challenge; Chicks; Natural feed additive.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001200745
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Crude protein level of pre-starter diets and nutritive solution for broilers R. Bras. Zootec.
Toledo,Rodrigo Santana; Rostagno,Horacio Santiago; Albino,Luiz Fernando Teixeira; Vargas Junior,José Geraldo de; Carvalho,Débora Cristine de Oliveira.
The objective of the present study was to evaluate the effect of dietary crude protein (CP) levels and the use of a nutritive solution via drinking water on the performance of pre-starter broilers. A total of 1,224 male Avian Farm chicks, from one to 40 days of age were used. Birds were distributed in a completely randomized experimental design with a 3 × 2 × 2 factorial arrangement, consisting of three initial body weights (low: 41 g, standard: 45 g and high: 49 g; two crude protein levels at the pre-starter phase (22 and 25% CP),with or without the addition of a nutritive solution, whose nutritional level was similar to the 25% CP pre-starter diet, at a concentration of 5% of the drinking water. Each treatment included six replicates and 17 chicks per...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broilers; Chicks; Nutritional requirements; Performance; Starting phase.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001000020
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Determination of the energetic value of corn, soybean meal and micronized full fat soybean for newly hatched chicks Rev. Bras. Ciênc. Avic.
Longo,FA; Menten,JFM; Pedroso,AA; Figueiredo,AN; Racanicci,AMC; Gaiotto,JB; Sorbara,JOB.
There are some evidences described in the literature showing reduced energy metabolizability of ingredients for newly hatched chicks. Hence, a metabolism trial was carried out with the objective of determining the metabolizable energy of corn grain, soybean meal and micronized full fat soybean for newly hatched chicks. The method of total excreta collection was used in an experiment with 192 male chicks from one to seven days, distributed in a completely randomized design with four treatments and four replicates of twelve birds. Excreta were collected from four to seven days of age. The treatments included a reference diet, two test-diets consisting of 60% of the reference diet and 40% of the test ingredients: corn grain (CG) and soybean meal (SM), and one...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chicks; Corn; Metabolizable energy; Micronized full fat soybean; Soybean meal.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300003
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Dietary requirements of available phosphorus in growing broiler chickens at a constant calcium:available phosphorus ratio R. Bras. Zootec.
Mello,Heloisa Helena de Carvalho; Gomes,Paulo Cezar; Rostagno,Horacio Santiago; Albino,Luiz Fernando Teixeira; Rocha,Tatiana Cristina da; Almeida,Rodrigo Lopes de; Calderano,Arele Arlindo.
Four experiments were conducted to study the requirements of available phosphorus (aP) for commercial male broilers of 1-10 day of age (exp.1), 11-21 days of age (exp. 2), 22-33 day of age (exp. 3) and 34-46 days of age (exp. 4), at a constant calcium:aP ratio. A complete randomized design was used in each experiment. The experimental diets were fed ad libitum to 8 replicate groups of ten broilers in each. The increments in the levels of aP ranged from 2.0 to 5.5 g/kg (exp. 1), 1.9 to 5.4 g/kg (exp. 2), 1.8 to 5.3 g/kg (exp. 3) and 1.7 to 5.2 g/kg (exp. 4), in 0.7 g/kg. The parameters evaluated were body weight gain, feed intake, feed conversion ratio and bone parameters. The level of aP in the diet influenced the performance of broilers of 1-10 and 11-21...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chicks; Diets; Mineral; Performance; Tibia.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001100004
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Effect of Environmental Temperature During the First Week of Brooding Period on Broiler Chick Body Weight, Viscera and Bone Development Rev. Bras. Ciênc. Avic.
Moraes,VMB; Malheiros,RD; Furlan,RL; Bruno,LDG; Malheiros,EB; Macari,M.
The objective of the present study was to assess the development of broiler chicks during the first week post-hatching when reared at three different environmental temperatures. A total of 480 day-old chicks were placed in three environmentally controlled rooms (20, 25 and 35°C) from 1 to 7 days of age. Body weight gain, feed and water intake, as well as liver, gizzard, heart, yolk sac and bursa of Fabricius weights were measured daily. Tibia and femur bones were weighed and their length and width (medial diameter) were also obtained. The chicks reared at 20º C had lower weight gain and ingested less food than chicks reared at 25°C and less water than chicks kept at 35°C. Relative weights of the liver, heart, and gizzard were affected by environmental...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body weight; Bone growth; Chicks; Environmental temperature; Viscera.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100003
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Effects of Gaba on the Thymus Cytokines of Wenchang Chickens Submitted to Heat Stress Rev. Bras. Ciênc. Avic.
Xie,XZ; Liang,C; Li,MH; Chen,Z.
ABSTRACT Under routine feeding conditions, 1-day-old male chicks were randomly divided into control group (CK), heat-stress group (HS), and GABA + heat stress group (GABA+HS). The thymus contents of IL-1, IL-2, TGF-β1, IFN-γ, GH and HSP70 were determined by enzyme-linked immunosorbent assays. The results showed that: (1) IL-1 and TGF-β1 contents of HS group were significantly lower than those of the CK group (p<0.05), and those of the GABA+HS group were significantly higher relative to the HS group (p<0.05); (2) IL-2 and IFN-γ contents of the HS group were significantly higher than those of the CK group (p<0.05), and those of the GABA+HS group were significantly lower relative to the HS group (p<0.05);(3) the thymus GH content of all three...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heat stress; GABA; Cytokines; Thymus; Chicks.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100143
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Energy and oil levels in broiler starter diets Ciência Rural
Maiorka,Alex; Dahlke,Fabiano; Santin,Elizabeth; Bruno,Luis Daniel Giusti; Macari,Marcos.
The feed intake and performance of the broilers fed with different levels of dietary energy in the starter diet to 21 days of age were evaluated. In Experiment 1 it was evaluated the performance of birds fed to 2,900 and 3,200kcal ME kg-1 diets, and the results show that ME intake was highest for birds 3,200kcal ME kg-1 on the 7th day of age. Feed intake (FI), weight gain (WG), and feed conversion (FC) were not affected by dietary energy level on the 7th and 14th day of age, but on the 21st day of age, WG and FC were better for 3,200kcal ME kg-1 diets. In the experiment 2, isocaloric diets (2,900kcal ME kg-1) were formulated with four different oil levels (0, 1, 2, and 3%), in order to observe diet preference. Between 6 and 10 days of age, a quadratic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chicks; Feed intake; Free choice; Palatability.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000400030
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Immunological evaluation of the intestinal mucosa of broiler chicks treated with Lactobacillus Spp. and challenged with Salmonella Enteritidis Rev. Bras. Ciênc. Avic.
Okamoto,AS; Andreatti Filho,RL; Lima,ET; Pereira,REP; Menconi,A; Rocha,TS; Marietto-Gonçalves,GA.
This study aimed at the antibody production by intestinal mucosa of broilers chicks were orally inoculated with Lactobacillus spp. at one and/or 21 days of age, and subsequently challenged with Salmonella enterica, subspecies enterica, serotype Enteritidis (S. Enteritidis). A total number of 288 drug-free broiler chicks was divided into 6 groups (groups A, B, C, D, E, and F), according to age at Lactobacillus spp. inoculation and SE challenge. The intestinal mucosa immune response was determined as the production of immunoglobulin A against S. Enteritidis, and evaluated by the Enzyme-Linked Immunosorbent Assay (ELISA) technique in intestinal washing fluid. Groups treated with Lactobacillus spp. presented higher IgA production only when the chicks were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chicks; IgA; Lactobacillus; Salmonella.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400009
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PERFORMANCE OF FUZZY INFERENCE SYSTEMS TO PREDICT THE SURFACE TEMPERATURE OF BROILER CHICKENS REA
Bahuti,Marcelo; Abreu,Lucas H. P.; Yanagi Junior,Tadayuki; Lima,Renato R. de; Campos,Alessandro T..
ABSTRACT This study aimed to compare fuzzy systems with different configurations to predict the surface temperature (ts) of broiler chickens subjected to different intensities and durations of thermal challenges in the second week of life. Data on the ts of broiler chickens aged 8 to 11 days were acquired by infrared thermography and subjected to combinations of four dry-bulb temperatures (tdb) (24, 27, 30, and 33 °C) and four durations of thermal challenges (DTC) (1, 2, 3, or 4 days). The input variables of the fuzzy systems were tdb and DTC, and the output variable was ts. The Mamdani inference method involving five defuzzification methods [center of gravity (centroid), bisector of the area (bisector), largest of maximum (lom), middle of maximum (mom),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pertinence functions; Fuzzy logic; Defuzzification methods; Fuzzy inference methods; Chicks; Infrared thermography.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000600813
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Productive consequences of fasting neonatal chicks of different genetic constitutions for growing Rev. Bras. Ciênc. Avic.
Gonzales,E; Stringhini,JH; Dahlke,F; Cunha,WCP; Xavier,SAG.
The study was designed to evaluate the productive consequences of fasting neonatal chicks obtained from strains genetically divergent for growing. Four hundred eight chicks from three strains, 160 from breeders selected for high growth rate and excellent feed conversion ratio (Cobb 500), 160 from breeders not selected for fast growth (JA57), and 160 from a white egg layer strain (Hy-Line W98) were allotted in a 3 (strain) x 2 (fasting period - 8 and 36h after hatching) factorial arrangement with 5 replicates of 16 chicks each. Immediately after hatching, all chicks had similar (P>0.05) relative yolk sac weights (14.13%, 14.50%, and 15.49% for Hy-Line, Cobb, and JA57, respectively). The yolk sac retractions were proportionally higher for Cobb and JA57...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chicks; Fasting; Neonatal; Performance; Yolk sac.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400010
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Salmonella serovars in laying hen flocks and commercial table eggs from a region of São Paulo state, Brazil Rev. Bras. Ciênc. Avic.
Freitas Neto,OC de; Galdino,VMCA; Campello,P L; Almeida,AM de; Fernandes,SA; Berchieri Júnior,A.
Salmonella spp. is the main originator of human foodborne diseases worldwide and is mainly transmitted by food containing eggs. In Brazil, as a result of the lack of studies and data collection very little is known about the prevalence of Salmonella spp. in laying hen flocks and commercial table eggs. Consequently the present study was elaborated and aimed at generating data about Salmonella spp. in part of the Brazilian egg production chain. Eight flocks of day-old chicks, eight flocks of adult laying hens (four vaccinated with bacterin against Salmonella Enteritidis and four unvaccinated) and commercial table eggs from four supermarkets were examined. Salmonella spp. was isolated in 50 % of the newly hatched chicks, 25 % of the adult flocks and 1.5 % of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Salmonella serovars; Laying hens; Chicks; Feces; Eggs.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200008
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The use of whole grain sorghum in broiler feeds Rev. Bras. Ciênc. Avic.
Fernandes,EA; Pereira,WJS; Hackenhaar,L; Rodrigues,RM; Terra,R.
In broiler feed manufacturing, grinding may significantly increase costs due to electric energy use. This study evaluated the performance and the morphometrics of the gastrointestinal tract of broilers. According to a completely randomized experimental design, 2,400 birds (1,200 males and 1,200 females) were submitted to five treatments of eight replicates each. Treatments consisted of diets based corn or sorghum as follows: ground corn (A), broken corn (B), ground sorghum (C), ground (50%) and whole (50%) sorghum (D) and whole sorghum (100%; E). Pre-starter feeds (1 to 8 days), based on corn or sorghum, were produced only with ground grains. The study was divided in two trials: males and females. The results were submitted to analysis of variance...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sorghum grain; Performance; Chicks.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300008
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