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Ability of non-linear mixed models to predict growth in laying hens R. Bras. Zootec.
Galeano-Vasco,Luis Fernando; Cerón-Muñoz,Mario Fernando; Narváez-Solarte,William.
In this study, the Von Bertalanffy, Richards, Gompertz, Brody, and Logistics non-linear mixed regression models were compared for their ability to estimate the growth curve in commercial laying hens. Data were obtained from 100 Lohmann LSL layers. The animals were identified and then weighed weekly from day 20 after hatch until they were 553 days of age. All the nonlinear models used were transformed into mixed models by the inclusion of random parameters. Accuracy of the models was determined by the Akaike and Bayesian information criteria (AIC and BIC, respectively), and the correlation values. According to AIC, BIC, and correlation values, the best fit for modeling the growth curve of the birds was obtained with Gompertz, followed by Richards, and then...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chickens; Mathematical models; Poultry; Regression analysis; Weight gain.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014001100573
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Animal performance, yield and characteristics of the meat of quail fed diets containing vegetable and mixed glycerin PAB
Farrapo,Samily de Paulo; Alves,Marcio Gleice Mateus; Brito,Jéssica de Carvalho; Batista,Ana Sancha Malveira; Freitas,Ednardo Rodrigues; Nascimento,Germano Augusto Jerônimo do.
Abstract: The objective of this work was to evaluate the effect of the inclusion of vegetable and mixed glycerin in the diet of broiler quail (Coturnix coturnix coturnix) on animal performance, yield of carcass and organs, and physical and sensory characteristics of the meat. A total of 432 quails aged 1-42 days were used in a completely randomized design with a 4×2+1 factorial arrangement (5, 10, 15, and 20% inclusion of vegetable or mixed glycerin, besides one treatment without glycerin) with 4 replicates of 12 birds each. Feed intake, weight gain, feed conversion, yield (carcass, breast, thigh+drumstick, heart, liver, gizzard, and abdominal fat), and physical and sensory characteristics of the meat. The diet containing mixed glycerin resulted in higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix coturnix coturnix; Carcass yield; Meat quality; Weight gain.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000900768
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Association between molecular markers linked to the Leptin gene and weight gain in postpartum beef cows Ciência Rural
Almeida,Sabrina Esteves Matos; Almeida,Erik Amazonas de; Terra,Gustavo; Neves,Jairo Pereira; Gonçalves,Paulo Bayard Dias; Weimer,Tania de Azevedo.
Three short tandem repeats (STRs), BMS1074, BM1500, IDVGA-51, and three single nucleotide polymorphisms (SNPs), LEPSau3AI (A/B), LEPSau3AI (+/-) and LEPKpn2I linked to the LEP gene were investigated to verify associations with productive performance in postpartum cows of two beef cattle breeds, Aberdeen Angus (AA, n=98) and Charolais (C, n=83). After polymerase chain reaction, STRs were analyzed by vertical electrophoresis and SNPs in agarose gel after endonucleases cleavage. In AA herd 79% of BMS1074*151 carriers had a lower average daily weight gain (ADG) when compared with the population mean daily weight gain (103g), while 62% of BMS1074*151 non-carriers presented a higher ADG (P<0.01); AA animals with at least one BMS1074*151 allele showed a ADG...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Leptin; STRs; SNPs; Beef cattle; Weight gain; Post-partum.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000100033
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Avaliação genética do ganho de peso e conversão alimentar de coelhos da raça Nova Zelândia Branco criados em ambientes diferenciados - DOI: 10.4025/actascianimsci.v32i1.6262 Animal Sciences
Santos, Alexandre Leseur; UEM; Scapinello, Cláudio; UEM; Martins, Elias Nunes; UEM; Granzotto, Fernanda; UEM; Paula, Meybi Carneiro; UEM; Hidalgo, André Marubayashi; UEM.
O objetivo do presente trabalho foi avaliar se a seleção para conversão alimentar (CA) e ganho de peso (GP), com base no desempenho individual e ou coletivo dos láparos, pode produzir ganhos genéticos em progênies criadas coletivamente, e animais submetidos à avaliação no período de 50 a 70 dias de idade, utilizando inferência Bayesiana. Realizaram-se seis análises bicaráter. No teste de desempenho foi observado que as características ganho de peso e conversão alimentar em ambos os ambientes tiveram valores para herdabilidade que variam de 0,42 a 0,60. Tanto a correlação genética 0,44 a 0,68 (GP) e 0,23 a 0,56 (CA) como a fenotípica 0,30 (GP) e 0,17 (CA) foram positivas para a mesma característica quando avaliada nos dois ambientes, coletivo ou individual,...
Tipo: Pesquisa de Campo; Metodologia Palavras-chave: 5.04.02.00-5; Herdabilidade; Ganho de peso; Conversão alimentar; Correlação genética; Inferência bayesiana GENÉTICA E MELHORAMENTO DOS ANIMAIS DOMÉSTICOS Heritability; Weight gain; Feed conversion; Genetic correlation; Bayesian inference.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/6262
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Body chemical composition, tissue deposition rates and gain composition of young Nellore cattle selected for postweaning weight R. Bras. Zootec.
Bonilha,Eduardo Figueiredo Martins; Branco,Renata Helena; Bonilha,Sarah Figueiredo Martins; Araújo,Fabiana Lana de; Cyrillo,Joslaine Noely dos Santos Gonçalves; Magnani,Elaine.
Empty body and carcass chemical composition were determined in 67 Nellore bulls from Selection Nellore (NeS) and Control Nellore (NeC) herds of an animal breeding program for growth, slaughtered at 570 days of average age, after 100 days of feedlot. Selection Nellore animals had, respectively, 360 and 430 kg of initial and slaughter body weight, and NeC animals had 318 and 373 kg for the same traits. Animals were slaughtered and empty body composition was determined by chemical analysis of the components blood, hide, head and feet, viscera and carcass. Tissue deposition rates and gain chemical composition were also determined based on gains estimated by comparative slaughter technique. Significant differences were detected between NeS and NeC animals for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bos indicus; Efficiency; Fat; Protein; Selection; Weight gain.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000400175
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Can calories from ethanol contribute to body weight preservation by malnourished rats? BJMBR
Aguiar,A.S.; Da-Silva,V.A.; Boaventura,G.T..
Our objective was to compare the use of calories from ethanol by well-nourished and malnourished rats in terms of body weight. Female Wistar rats weighing 170-180 g at the beginning of the study were used. The animals were divided into two groups (N = 12 each): group W received water ad libitum and group E an ethanol solution ad libitum as the only source of liquid throughout the experiment. The concentration of ethanol was increased weekly from 0 to 5, 10, 20 and 40% (v/v). In the well-nourished phase (A), all rats received food ad libitum (AW and AE). Ethanol treatment (AE) was then interrupted and water was offered to both groups. After 2 weeks both AW and AE rats were submitted to food restriction (50% of group AW food consumption), thus initiating the...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Ethanol; Weight gain; Malnutrition; Rats; Toxicity.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600009
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Cashew nut meal subjected to prolonged storage for quail feeding R. Bras. Zootec.
Farias,Nadja Naiara Pereira; Freitas,Ednardo Rodrigues; Xavier,Regina Patrícia de Souza; Braz,Nádia de Melo; Souza,Davyd Herik; Tavares,Thais Cruz Lopes.
ABSTRACT The objective of this study was to evaluate the oxidative stability of cashew nut meal (CNM) at 180 days of storage and the effects of its use in the feed of meat quails. A total of 280 animals at seven days of age, of both sexes, were distributed in a completely randomized design with five treatments, in a 2 × 2 + 1 factorial arrangement, and seven replicates of eight birds each. The treatments were a control diet without CNM and diets containing levels of 12.5 or 25% of new CNM (NCNM) or stored for 180 days (SCNM). The lipid oxidation of the brans was evaluated by determining the acidity index and peroxide index. The parameters evaluated were the quail performance, metabolizable coefficients and energy of diets, carcass characteristics, relative...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carcass characteristics; Feed intake; Feed conversion; Metabolizable energy; Quail; Weight gain.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000700576
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Cassava root peel as a replacement for maize in diets for growing pigs: effects on energy and nutrient digestibility, performance and carcass characteristics JARTS
Akinola, Olufemi S.; University of Agriculture Abeokuta, Department of Animal Production and Health, P.M.B. 2240, Abeokuta, Nigeria; Fanimo, Amos O.; University of Agriculture Abeokuta, Department of Animal Production and Health, P.M.B. 2240, Abeokuta, Nigeria; Agunbiade, J. Adeniyi; Olabisi Onabanjo University, Department of Animal Production, Yewa Campus, P.M.B. 0012, Ayetoro, Nigeria; Susenbeth, Andreas; Christian-Albrechts-Universität zu Kiel, Institute of Animal Nutrition and Physiology, Hermann-Rodewald-Str. 9, 24098 Kiel, Germany; Schlecht, Eva; Animal Husbandry in the Tropics and Subtropics, Faculty of Agricultural Sciences Georg-August-University Göttingen and Organic Agricultural Sciences, University of Kassel, Witzenhausen tropanimals (at) uni-kassel.de; fax: +49 5542 98 1230.
Two experiments were conducted to evaluate cassava root peel (CRP) as diet component for fattening pigs. In the first experiment, ten male pigs were used to investigate the nutrient digestibility and the nutritive value of CRP as replacement for maize in the diet at 0 %, 30 %, 40 %, 50 % and 60 %, while supplementing free amino acids (fAA). During two experimental periods, faeces were quantitatively collected and analysed for chemical composition. In the second experiment, 40 pigs received the same diets as in Experiment 1, and daily feed intake and weekly weight changes were recorded. Four pigs per diet were slaughtered at 70 kg body weight to evaluate carcass traits. Digestibility of dry and organic matter, crude protein, acid detergent fibre and gross...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal Husbandry energy value; Free amino acids; Manihot esculenta; Nigeria; Weight gain.
Ano: 2014 URL: http://www.jarts.info/index.php/jarts/article/view/2013112644621
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Combined effect of short stature and socioeconomic status on body mass index and weight gain during reproductive age in Brazilian women BJMBR
Sichieri,R.; Silva,C.V.C.; Moura,A.S..
Short stature, a marker for undernutrition early in life, has been associated with obesity in Brazilian women, but not in men. We tested the hypothesis that weight gain during the reproductive years could explain this gender difference. A national two-stage household survey of mothers with one or more children under five years of age was conducted in Brazil in 1996. The subjects were women aged 20 to 45 years (N = 2297), with last delivery seven months or more prior to the interview. The regions of the country were divided into rural, North/Northeast (urban underdeveloped) and South/Southeast/Midwest (urban developed). The dependent variables were current body mass index (BMI) measured, BMI prior to childbearing (reported), and BMI change. Socioeconomic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Parity; Body mass index; Weight gain; Pregnancy; Overweight; Stature.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001000007
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Comparação de dois modelos de escamoteadores sobre o desempenho dos leitões - 10.4025/actascianimsci.v34i1.11675 Animal Sciences
Sabino, Luana Araujo; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Abreu, Paulo Giovanni de; Empresa Brasileira de Pesquisa Agropecuária / Suínos e Aves; Sousa Júnior, Vilmar Rodrigues de; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Abreu, Valeria Maria Nascimento; Empresa Brasileira de Pesquisa Agropecuária / Suínos e Aves; Lopes, Leticia dos Santos; Empresa Brasileira de Pesquisa Agropecuária / Suínos e Aves.
Objetivou-se avaliar o efeito dos modelos de escamoteador no aquecimento e desempenho dos leitões. O modelo 1 (MOD 1) era formado por oito escamoteadores de alvenaria, aquecimento por resistência elétrica embutida no piso e iluminação com lâmpada fluorescente de 7 W. O modelo 2 (MOD 2) era formado por oito escamoteadores de madeira e aquecimento por lâmpada incandescente de 60 W. Os dados de temperatura e umidade foram registrados do nascimento ao 26o dia de vida da leitegada e o peso médio da leitegada foi obtido no segundo dia e no 21o dia de vida. A análise estatística foi realizada pelo modelo de medidas repetidas, utilizando o MIXED do SAS (2002-2003). Foram testados os efeitos de modelo, semana e a interação. Escamoteadores do MOD 1 obtiveram média...
Tipo: Pesquisa de campo Palavras-chave: Ambiência e Manejo temperatura; Ganho de peso; Piso aquecido; Lâmpada incandescente temperature; Weight gain; Heated floor; Light bulb.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11675
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Composición de la dieta y conducta del pastoreo de terneras (Bos taurus x Bos indicus) en un sitio con vegetación secundaria en el norte de Veracruz Colegio de Postgraduados
Velázquez Martínez, Mauricio.
Se estudió el comportamiento del pastoreo, selección de la dieta y ganancia de peso de terneras (sin y con modelos sociales) en un sitio con alta diversidad de especies de plantas. El estudio se llevo acabo en un ecosistema tropical que contenía una mezcla de zacates, herbáceas hoja ancha, vegetación leñosa y semileñosa. Diez terneras Bos taurus x Bos indicus (6 a 8 meses de edad) fueron asignadas aleatoriamente a uno de dos tratamientos: terneras sin experiencia (T1; n=5) con peso de 131.4 ± 14.1 kg, y terneras sin experiencia (T2; n=5) con peso de 129.6 ± 6.4 kg acompañadas por dos modelos sociales (16 meses de edad) con peso de 153.3 ± 4.1. Cada grupo de animales pastorearon en potreros separados durante un periodo de 12 semanas, y los animales...
Tipo: Tesis Palavras-chave: Terneras; Comportamiento del pastoreo; Selección de dieta; Ganancia de peso; Diversidad de plantas; Maestría; Ganadería; Heifers; Foraging behavior; Diet selection; Weight gain; Plant diversity.
Ano: 2008 URL: http://hdl.handle.net/10521/1413
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Concentrate intake and performance of dairy calves subjected to programs of supplementary lighting Ciência Rural
Almeida,Gledson Luiz Pontes de; Pandorfi,Héliton; Baptista,Fátima; Guiselini,Cristiane; Ferreira,Marcelo de Andrade; Cruz,Vasco Fitas.
ABSTRACT: This research aimed to assess Girolando calves’ concentrate intake and performance when placed in shelters with distinct roofing materials and programs of supplementary lighting during the milk-feeding stage. In order to so, we used a completely randomized design with a 3×3 factorial arrangement, with three replications. Females Girolando calves (n=27) were assigned in individual shelters at random with 3 different roofing materials (fiber cement tile, recycled tile and thatched roofs) and subjected to three lighting programs (12, 16 and 20 hours). No interaction was observed between roofing material and lighting programs, whilst no significant effect (P>0.05) was observed among the roofing materials. The supplementary lighting, by providing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal performance; Dairy cattle; Light duration; Weight gain.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900651
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Correlation between performance and feeding behavior of feedlot lambs fed without roughage diet Animal Sciences
Cardoso, Elves de Souza; Santana Junior, Hermógenes Almeida de; Oliveira, Aracele Prates de; Ferreira, Antônio Hosmylton Carvalho de; Oliveira, Zeliana Fernandes de; Freitas, Tiago Brandão.
The objective was to evaluate the correlation between performance and feeding behavior of feedlot castrated Santa Inês lambs fed without roughage diet, weighing 20 ± 1,8 kg and four months of age (± 0,34). A completely randomized design was adopted. Correlations were obtained by Pearson’s linear correlation analysis and the t test, and processed on SAS software (version 9.2). The variables number of rumination chews per cud, number of cuds ruminated per day, speed of each chew, and number of rumination cuds per day were positively correlated with the variation in body weight (p < 0.05). For number of cuds ruminated per day, a positive correlation was found with the variations in body weight. Initial and final body weights were positively correlated with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.00.00.00-4; 5.04.00.00-2; 5.04.03.00-1 concentrate; Intake; Weight gain; Sheep..
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33453
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Crescimento e características de carcaça de caprinos criados em sistema tradicional de manejo no Nordeste. Infoteca-e
FIGUEIREDO, E. A. P. de; SIMPLICIO, A. A.; RIERA, G. S.; LIMA, F. de A. de M..
Peso ao nascer (Pn) e aos 240 dias de idade (P 240) (em kg) de caprinos nativos explorados em baixo nivel de tecnologia, de acordo com a epoca de nascimento; Caracteristicas de carcaca de caprinos SRD criados em sistema tradicional - CNPC 1979/80a.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Raça nativa; Productivity.; Native breed; Caprino; Ganho de peso; Produtividade; Carcaça; Goats; Weight gain; Carcass composition..
Ano: 1980 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514252
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Crude glycerin levels in pearl millet-based diets for Nellore young bulls in feedlot R. Bras. Zootec.
Moreira,Werney da Silva; Miotto,Fabrícia Rocha Chaves; Restle,João; Missio,Regis Luis; Neiva,José Neuman Miranda; Moreira,Roger Vieira.
ABSTRACT - The objective of this study was to find the best level of inclusion of crude glycerin (0, 60, 120, and 240 g kg−1 of dry matter of diet) in substitution of pearl millet in a feedlot diet. Twenty-eight Nellore young bulls with mean age of 18 months and average weight of 357±23.56 kg were used. The animals were distributed in a completely randomized design with four treatments and seven replications. The intakes of dry matter, crude protein, neutral detergent fiber, and total digestible nutrients were similar among the dietary levels of crude glycerin. The ether extract intake decreased with increase in the levels of crude glycerol in the diets. Apparent digestibility of dry matter, crude protein, and extract ether was similar among the dietary...
Tipo: Info:eu-repo/semantics/article Palavras-chave: By-products; Digestibility; Finishing; Glycerol; Intake; Weight gain.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000100032
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Decoquinate, lasalocid and monensin for starter feeds and the performance of holstein calves to 20 weeks of age Scientia Agricola
Nussio,Carla Maris Bittar; Huber,John Tal; Nussio,Luiz Gustavo.
The large utilization of coccidiostats in dairy herds has raised the question regards the best product to use, based on better animal performance. Sixty-four Holstein calves were randomly assigned to four treatments at 10 (±4) d of age to evaluate calf performance when fed approved coccidiostats available on the market in Arizona, USA. Calves received a dry calf starter without (control) or with one of the following coccidiostats: lasalocid, 30 mg kg-1; decoquinate, 19 mg kg-1; and monensin, 30 mg kg-1. Calves received 3.6 kg d-1 of a commercial 22% CP:20% fat milk replacer until 6 wk of age. Calves were offered starter "ad libitum" up to 2 kg d-1, and calves had free access to water throughout the trial. Alfalfa hay was offered "ad libitum" after weaning....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coccidiostats; Feed efficiency; Growth; Ionophore; Weight gain.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000300002
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Desempenho de cordeiras Bergamácia submetidas a dois sistemas de desmama - doi: 10.4025/actascianimsci.v32i3.7359 Animal Sciences
Maestá, Sirlei Aparecida; UNESP- Campus experimental de Dracena; Siqueira, Edson Ramos de; Faculdade de Medicina Veterinária e Zootecnia - UNESP - Campus de Botucatu; Fernandes, Simone; Faculdade de Medicina Veterinária e Zootecnia - UNESP - Campus de Botucatu; Emediato, Rodrigo Martins de; Faculdade de Zootecnia e Engenharia de Alimentos, USP, Pirassununga; Oliveira, Aline Aparecida de; Faculdade de Medicina Veterinária e Zootecnia - UNESP - Campus de Botucatu; Stradiotto, Monalissa de Melo; Faculdade de Medicina Veterinária e Zootecnia.
Foram utilizadas 26 cordeiras Bergamácia desmamadas com 60 dias de idade e distribuídas em dois grupos: Aleitamento artificial: dez cordeiras foram separadas de suas mães 48h após o parto e amamentadas com leite de vaca; Aleitamento controlado: 16 cordeiras foram mantidas com suas mães na pastagem durante o dia e separadas à noite e retornando após a ordenha matinal. Após a desmama, ambos os grupos foram mantidos confinados até atingirem o peso médio de 38,6 kg, depois foram divididas em dois tratamentos: Recria em pasto: cinco cordeiras do aleitamento artificial + oito cordeiras de aleitamento controlado; Recria confinada: cinco cordeiras aleitamento artificial + oito cordeiras aleitamento controlado. O delineamento experimental foi um fatorial 2 x 2,...
Tipo: Pesquisa de Campo Palavras-chave: 5.04.05.00-4 análise econômica; Ganho de peso; Produção de leite; Ovelhas Produção animal economic analysis; Weight gain; Milk production; Ewe-lambs.
Ano: 2010 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/7359
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Desempenho de leitões na fase de creche alimentados com rações contendo proteína concentrada de soja - doi: 10.4025/actascianimsci.v34i2.11223 Animal Sciences
Oliveira, Emanuela Lima de; Universidade Federal Rural de Pernambuco; Ludke, Maria do Carmo Mohaupt Marques; Universidade Federal Rural de Pernambuco; Ludke, Jorge Vitor; Empresa Brasileira de Pesquisa Agropecuária - Embrapa Suínos e Aves; Bertol, Marisa Teresinha; Empresa Brasileira de Pesquisa Agropecuária - Embrapa Suínos e Aves; Guidoni, Antônio Lourenço; Empresa Brasileira de Pesquisa Agropecuária - Embrapa Suínos e Aves; Salvagni, Gizelli; Universidade do Estado de Santa Catarina.
O experimento foi desenvolvido com os objetivos de avaliar os efeitos da proteína concentrada de soja nas dietas de leitões no desempenho e viabilidade econômica durante a fase de creche. Foram avaliados os seguintes tratamentos em dietas pré-inicial (25 a 37 dias de idade), inicial I (37 a 50 dias de idade) e inicial II (50 a 64 dias de idade): FS a base de milho e farelo de soja Hypro; PCS-60% proteína concentrada de soja; PCSH-2h com PCS hidrolisada com enzima protease por um período de 2 horas; PCSH-8h com PCS hidrolisada com enzima protease por um período de 8 horas. No período entre 25-50 dias foi observada diferença significativa para a receita diária (p = 5,1%) e para a margem bruta (p = 2,1%). Os tratamentos PCS-60%, PCSH-2h e PCSH-8h apresentaram...
Tipo: Pesquisa de campo; análise laboratorial Palavras-chave: 5.04.03.00-1 alimento proteico; Análise econômica; Ganho de peso; Nutrição; Suinocultura proteic feedstuff; Economic analysis; Weight gain; Nutrition; Swine production.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11223
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Desempenho de reprodutores jovens da Raça Nelore em teste de performance a pasto no Acre. Infoteca-e
CARNEIRO JUNIOR, J. M.; PINHEIRO, A. K.; KOURY FILHO, W.; SILVA, M. S..
O objetivo deste trabalho foi avaliar a eficiência do teste de performance a pasto da raça Nelore no Acre e do índice de seleção utilizado em discriminar grupos de tourinhos geneticamente superiores a serem adotados para melhoria dos indicadores de eficiência e rentabilidade dos sistemas de produção de carne tradicionais do estado.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Ganado de carne; Raza de bovinos Nelore; Desempeño reproductivo; Performance a pasto; Grazing performance; Aumento de peso; Cruce de animales; Plácido de Castro (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Gado de Corte; Gado Nelore; Eficiência Reprodutiva; Ganho de Peso; Seleção Genética; Melhoramento Genético Animal; Beef cattle; Nellore; Reproductive performance; Weight gain; Animal breeding.
Ano: 2019 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1118085
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Diet supplementation with phytase on performance of broiler chickens R. Bras. Zootec.
Lelis,Guilherme Rodrigues; Albino,Luiz Fernando Teixeira; Calderano,Arele Arlindo; Tavernari,Fernando de Castro; Rostagno,Horacio Santiago; Campos,Anastácia Maria de Araújo; Araújo,Wagner Azis Garcia de; Ribeiro Junior,Valdir.
The assay was carried out to determine the effect of phytase supplementation on performance of broilers from 1 to 21 and 1 to 40 days of age. Twelve hundred and fifty male broilers (Ross) were distributed in a randomized experimental design, with five treatments, 10 repetitions and 25 birds per experimental unit. The treatments consisted of evaluating the phytase supplementation in diets with reductions in nutritional levels, compared with the positive control. The nutrient contents in negative controls one and two were reduced progressively and these diets were supplemented with phytase levels of 250 and 500 ftu/kg of the diet, respectively. Two diets were formulated: pre-starter/starter, 1-21 days, and growth/finishing, from 21 to 40 days). In both...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diet; Productive efficiency index; Weight gain.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400014
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