Consulta: subjectFacets:"Production performance"
Registros recuperados: 13
Data/hora: 12/06/2024 03:18:22

PERTINENCE CURVES IN FUZZY MODELING OF THE PRODUCTIVE RESPONSES OF BROILERS
Provedor de dados: 70
Autores: Lourençoni,Dian; Abreu,Paulo G. de; Yanagi Junior,Tadayuki; Campos,Alessandro T.; Yanagi,Silvia de N. M.
ABSTRACT The selection of the type of fuzzy systems pertinence curve allows a better representation of the mathematical model and a smaller simulation error. We aimed to study the effect of pertinence curves in fuzzy modeling of broiler performance, created in different production systems. For the development and testing of fuzzy models, three commercial aviaries (conventional, tunnel with negative pressure, and dark house) were evaluated over one year, totaling six lots per system. For the development of the model, the input variables were enthalpy in each rearing phase (initial: phases 1, 2, and 3; growth: phase 4; and final: phase 5) and the output variables were feed intake (FE), weight gain (GP), feed conversion (FE), and the productive efficiency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry farming; Production performance; Artificial intelligence; Fuzzy logic.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000300265

Production Performance Indicators with Externalities: Environmentally-Adjusted Productivity and Efficiency Indicators of a Sample of Semi-Intensive Shrimp Farms in Mexico
Provedor de dados: 31
Autores: Martinez-Cordero,   Francisco Javier; Leung,   PingSun.
Sustainability in operations is a key consideration when discussing aquaculture’s current and future role in providing food and increasing coastal and rural employment and incomes, among other social benefits.  An important problem from the economics point of view is how the economics point of view is how the externalities generated by aquaculture and those that the industry suffers are internalized.  This paper extends the analysis reported in Martinez-Cordero and leung (2004) for a group of semi-intensive shrimp farms in Mexico.  Modifications to the traditional Total Factor Productivity (TFP) and Technical Efficiency (TE) indicators are carried out in order to incorporate in the evaluation the environmental effects of aquacultural activities.  In a...
Tipo: Conference Paper or Presentation
Palavras-chave: Externalities; Production performance; Shrimp farming; TFP; Efficiency; Livestock Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/56006

THE SINGLE NUCLEOTIDE POLYMORPHISMS OF MYOSTATIN GENE AND THEIR ASSOCIATIONS WITH GROWTH AND CARCASS TRAITS IN DAHENG BROILER
Provedor de dados: 89
Autores: Zhang,XX; Ran,JS; Lian,T; Li,ZQ; Yang,CW; Jiang,XS; Du,HR; Cui,ZF; Liu,YP.
ABSTRACT Myostatin (MSTN) is a negative regulator of skeletal muscle growth. In order to investigate whether there is a correlation between MSTN polymorphisms and chicken production performance, in this study, single nucleotide polymorphisms (SNPs) in MSTN gene were examined across 180 Daheng broilers by direct sequencing of PCR product, and the correlations between the genotype and body weight at the age of 1-10 weeks and carcass traits at the age of 73 day were analyzed. Five SNPs (rs313622770, rs313744840, rs316247861, rs314431084, rs317126751) of MSTN gene were identified across Daheng broiler samples, and four haplotypes were reconstructed based on the five SNPs. Results of association analysis showed that four (rs313622770, rs313744840, rs316247861...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Association analysis; Chicken; Production performance; MSTN; SNP.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300319

Effect of Forced Molting on body characteristics and post-molting egg production performance of Layers in Quetta, Pakistan
Provedor de dados: 89
Autores: Rafeeq,M; Rashid,N; Awan,MA; Tariq,MM; Abbas,F; Ahmed,Z; Taj,I.
White leghorn layer (n=2740), with 85weeksof age, were submitted to forced molting by fasting for 13 days and changes in body characteristics and subsequent laying performance during second laying cycle were evaluated. Live body weight (LBW),ovary weight (OW), oviduct weight (OvW) and oviduct length (OvL) were measured before and after fasting. Post-fasting restricted feeding was applied, initially feeding crushed corn with added 2% Ca for 20 days and thereafter layer crumble feed was offered. Layers lost 632.16g (36%) of their LBW and significant reductions of 45.32, 47.53 and 54% were observed in post-fasting/molt OW, OvW and OvL, respectively (p&lt;0.05). Resting period was 49 days and birds consumed 4.79kg feed during resting period. Egg production...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Layer; Force molting; Body characteristics; Production performance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400009

Using processed feeds for laying quails (Coturnix coturnix japonica)
Provedor de dados: 89
Autores: Murakami,AE; Souza,LMG; Sakamoto,MI; Fernandes,JIM.
The aim of this experiment was to determine the productive performance and egg quality of Japanese quails fed different types of processed rations (mash, extruded, or pelleted). One hundred and forty-four 18-w-old quails (Coturnix coturnix japonica) were housed in galvanized wire cages and fed a 21.50% CP and 2850 kcal ME/kg basal feed supplied in mash, extruded, or pelleted form. Experimental data were analyzed by ANOVA as a complete randomized design, with three treatments (ration forms) and six replicates of eight quails each. When necessary, means were compared by Tukey's test at 5% significance. Quails fed pelleted feed presented higher egg production, feed intake, and egg mass weight as compared to mash- and extruded-diet-fed birds. Under the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Processing; Production performance.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400002

Effect of Plant Essential Oil on Growth Performance and Immune Function During Rearing Period in Laying Hens
Provedor de dados: 89
Autores: Gao,J; Liu,W; Geng,B; Lei,Q; Han,H; Zhou,Y; Liu,J; Cao,D; Li,H; Li,F.
ABSTRACT The effects of plant essential oil (PEO) on the production performance and immune function of laying hens were evaluated to provide theoretical basis for promoting the natural plant extracts. Eight thousand 1-day-old healthy laying hens were randomly divided into a control group or PEO group, with four replicates per treatment and 1000 hens per replicate. The PEO diet was supplemented with 3g/kg plant extract. Diets were fed for 56 days. The tibia length and keel length were detected on an empty stomach at the end of the trial. Blood samples were collected on the 28th and 56th days to detect the level of C3, C4, IL-1, IL-2, IL-17 and immunoglobulin in the serum. The results showed that, compared with the control, PEO supplementation significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying hens; Plant essential oil; Production performance; Immune function.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300301

Coconut Cake in Diets for Quail in the Laying Phase
Provedor de dados: 89
Autores: Moraes,SS; Pereira,AA; Almeida,VVS; Lima Júnior,DM; Silva,WA; Mariz,CBL; Vieira,GMN; Silva,WA; Moreno,GMB.
ABSTRACT Currently, agro-industrial by-products have increasingly been used in animal feeding, as they constitute an alternative source of nutrients for the animal diet and a way to simultaneously reduce environmental pollution. The objective of this study was to examine increasing levels of inclusion of coconut cake in Japanese quail diets in the laying phase on their production performance and egg quality. A total of 360 Japanese quails were allotted to eight treatments with nine replicates and eight birds per experimental unit, in a randomized-block design. Five diets were formulated: a diet without inclusion of the by-product; and diets containing 3, 6, 9, and 12% coconut cake. The experiment lasted 63 days, with evaluations occurring at every 21 days....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feed; Poultry; Production performance.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100306

The Effect of Supplementing Tea Polyphenols in Diet of Laying Hens on Yolk Cholesterol Content and Production Performance
Provedor de dados: 89
Autores: Wang,Y; Yang,Q; Lin,P; Li,C; Lu,Y; Daijun,S.
ABSTRACT This study was conducted to evaluate the influence of supplementing tea polyphenols (TP) in diet of laying hens on yolk cholesterol content and production performance. A total of 1800 Lohmann laying hens aged 48 weeks were randomly allocated to 6 groups. Each group consisted of 6 replicates with 50 layers. The feeding experiment was 4 weeks including one-week acclimatization. Layers fed basal diet supplemented with 0, 150, 200, 250, 300 and 350 mg TP/kg diet, respectively. The results showed that average daily feed intake (ADFI), feed conversion ratio (FCR), average egg weight (AEW), laying rate and the indicators of egg quality were not significantly affected by the diet supplemented with 300 mg/kg TP (p&gt;0.05). However, yolk cholesterol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Laying hens; Production performance; Tea polyphenols; Yolk cholesterol content.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000200302

Influence of Moringa Oleifera Leaf Meal Used as Phytogenic Feed Additive on the Serum Metabolites and Egg Bioactive Compounds in Commercial Layers
Provedor de dados: 89
Autores: Ahmad,S; Khalique,A; Pasha,TN; Mehmood,S; Ahmad,S Sohail; Khan,AM; Hussain,K.
ABSTRACT Phytogenic feed additives have been increasingly used in the last decade, and several plants and their metabolites have been investigated for the said purpose. In this context, present study aimed at evaluating the effects of Moringa oleifera as feed additive on layer performance, and egg bioactive compound levels and nutrient profile. HyLine W36 layers (n=200), 50 weeks of age, were randomly distributed in four treatments with five replicates of ten birds each. Four isocaloric (2725 kcal/kg) and isonitrogenous (CP 16%) diets were formulated and supplemented with 0, 0.5, 1.0, or 1.5% (w/w) of dried Moringa oleifera leaf powder (MLM). The results showed positive effects of MLM on egg production, egg mass, and feed conversion ratio, but negative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-carotene; Moringa leaf; Quercetin; Production performance; Serum biochemistry.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200325

Levels of yeast and its by-products on pacu juveniles feeding
Provedor de dados: 96
Autores: Watanabe,André Luiz; Viegas,Elisabete Maria Macedo; Gonçalves,Lígia Uribe.
This study was conducted to evaluate the inclusion of two levels (2.5 e 5.0%) of dried yeast (Saccharomyces cerevisiae) and its by-products, disrupted yeast cells and yeast cell wall in diets for juveniles of pacu (Piaractus mesopotamicus). Production performance, body and plasmatic composition indexes were evaluated. Seven isoproteic (26% digestible protein) and isoenergetic (3.100 kcal digestible energy) diets were formulated containing increased levels of each ingredient. The diets were supplied for 86 days, "ad libitum". Yeast and by-products increase feed efficiency and protein use, when compared to the control diet. Carcass composition and plasmatic (glucose, cortisol, uric acid, urea and plasmatic protein) levels are not affected by the test...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piaractus mesopotamicus; Pre-biotic; Production performance; Saccharomyces cerevisiae; Yeast by-products.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300001

ประสิทธิภาพของอิมัลซิไฟเออร์ภายนอกต่อสมรรถนะการผลิตและคุณภาพซากของไก่เนื้อ
Provedor de dados: 106
Autores: Sukanya Phonpalert; Nattanan Saenthaweesuk; Songsak Chumpawadee; Jowaman Khajarern.
The objective of this study was to determine the effects of an exogenous emulsifier on performance and carcass traits of broiler. The exogenous emulsifier (sodium strearoyl-2-lactylate) was added 0.05% to the 3 levels reduction (0.70, 1.00 and 1.30 %) rice bran oil from control diets. The results showed that body weight gain, feed intake, feed conversion ratio, survival rate, productive index and feed cost/kg BW (FCG) were similar to the added emulsifier and control fed groups for 3 periods of testing (1-21, 22-35 and 36-42d of age). However, over period of 1-42 d of age, birds fed with exogenous emulsifier 0.05% to 0.07% reduction rice bran oil from control diets showed improvement and better (P&lt;0.05) FCR and showed higher (P&lt;0.05) than no added...
Tipo: PhysicalObject
Palavras-chave: Broiler chicken; Supplemention; Emulsifier; Sodium strearoyl-2-lactylate; Growth performance; Production performance; Feed conversion ratio; Carcass quality; ไก่เนื้อ; การให้อาหารเสริม; โซเดียมสเตียรออิล 2 แลคทิเลส; อิมัลซิไฟเออร์; สารเสริม; เอนไซม์ไลเปส; การไฮโดรไลซ์; กรดไขมัน; โมโนกลีเซอไรด์; สมรรถนะการผลิต; อัตราการเปลี่ยนอาหารเป็นน้ำหนัก; คุณภาพซาก.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5787

ประสิทธิภาพของกรดอินทรีย์ต่อสมรรถนะการผลิตและคุณภาพซากในไก่เนื้อ
Provedor de dados: 106
Autores: Dungjai Jongtamklang; Nattanan Saenthaweesuk; Anut Chantiratikul; Jowaman Khajarern.
The effects of organic acid (double-coated calcium butyrate base supplement) on performance and carcass traits of broiler chickens were assessed in three groups (PC, NC1 and NC2). The organic acid was added in three phases of feeding (1-21d, 22-35d, 36-42d) in PC, NC1 (PC deduction 40 kcal ME/kg and both methionine and lysine 1.5%) and NC2 (PC deduction 60 kcal ME/kg and both methionine and lysine 2.2%). Organic acid was added in PC with three period dosages 750-500-500 ppm and in both NC1 and NC2 1000-750-750 ppm. Addition organic acid in three controls (PC, NC1, NC2) showed similar performance of body weight gain, survival rate, feed conversion ratio and productive index, except for early starter period (1-21d of age). Broilers fed with organic acid...
Tipo: PhysicalObject
Palavras-chave: Broiler chicken; Supplemention; Organic acid; Additive; Digestibility; Nutrient absorption; Production performance; Feed conversion ratio; Carcass quality; ไก่เนื้อ; การให้อาหารเสริม; กรดอินทรีย์; สารเสริม; ประสิทธิภาพการย่อย; การดูดซึมสารอาหาร; ค่าความเป็นกรดด่าง; สมรรถนะการผลิต; อัตราการเปลี่ยนอาหารเป็นน้ำหนัก; คุณภาพซาก.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5781

Desempenho comparativo de três linhagens de tilápia do Nilo Oreochromis niloticus em diferentes densidades de estocagem - DOI: 10.4025/actascianimsci.v31i2.464
Provedor de dados: 2
Autores: Fülber, Vanice Marli; UEM -Maringá; Mendez, Lauro Daniel Vargas; UEM - Maringá; Braccini, Graciela Lucca; UEM - Maringá; Barrero, Nelson Mauricio Lopera; Digmeyer, Melanye; Ribeiro, Ricardo Pereira; UEM - Maringá.
O presente trabalho objetivou avaliar o desempenho produtivo de três linhagens de tilápia do Nilo (O. niloticus) na fase inicial e de crescimento, em diferentes densidades de estocagem. As linhagens estudadas foram Bouaké, Chitralada e GIFT. Foram utilizadas caixas d’água de 500 L, testando-se nove tratamentos e três repetições. Os parâmetros físicos e químicos da água mantiveram condições normais de cultivo para a espécie nas duas fases. Na fase inicial, ao se comparar entre as densidades dentro da mesma linhagem, não foram identificadas diferenças na Chitralada. Entretanto, as linhagens Bouaké e GIFT refletiram sensibilidade ao aumento das densidades de estocagem. Na fase de crescimento, os resultados obtidos para os parâmetros de desempenho médio final...
Palavras-chave: Production performance; Stocking density; GIFT; Oreochromis niloticus; Nile tilapia desempenho produtivo; Densidade de estocagem; GIFT; Oreochromis niloticus; Tilápia do Nilo.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/464