Revista Brasileira de Zootecnia

Revista Brasileira de Zootecnia (RBZ) is a publication of Sociedade Brasileira de Zootecnia (SBZ), aimed at disseminating original unpublished research papers that cover the broad area of Animal Science such as Animal production systems and agribusiness, Forage, Nutrition, Breeding and genetics, Reproduction, Aquaculture, Biometeorology and Animal welfare.

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Revista Brasileira de Zootecnia

Revista Brasileira de Zootecnia (RBZ) is a publication of Sociedade Brasileira de Zootecnia (SBZ), aimed at disseminating original unpublished research papers that cover the broad area of Animal Science such as Animal production systems and agribusiness, Forage, Nutrition, Breeding and genetics, Reproduction, Aquaculture, Biometeorology and Animal welfare.

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Revista Brasileira de Zootecnia

Revista Brasileira de Zootecnia (RBZ) is a publication of Sociedade Brasileira de Zootecnia (SBZ), aimed at disseminating original unpublished research papers that cover the broad area of Animal Science such as Animal production systems and agribusiness, Forage, Nutrition, Breeding and genetics, Reproduction, Aquaculture, Biometeorology and Animal welfare.

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Volume 42, Number 1, 2013

Effects of the spermatozoa: oocyte ratio, water volume and water temperature on artificial fertilization and sperm activation of cascudo-preto

Robie Allan Bombardelli, Eduardo Antônio Sanches, Diego Mendes Baggio, Renata Marino Sykora, Bruno Estevão de Souza, Lucélia Tessaro, [...]

01/Jan/2013

Effects of the spermatozoa: oocyte ratio, water volume and water temperature on artificial fertilization and sperm activation of cascudo-preto

Robie Allan Bombardelli, Eduardo Antônio Sanches, Diego Mendes Baggio, Renata Marino Sykora, Bruno Estevão de Souza, Lucélia Tessaro, [...]

DOI: 10.1590/S1516-35982013000100001

The objective of this study was to evaluate the effects of water volume and water temperature on the sperm motility duration and the number of spermatozoa, and the water volume on the fertilization rates of oocytes of Rhinelepis aspera. Experiments were carried out to evaluate the effect of semen dilutions (1.74×10-5, 1.74×10-4, 1.74×10-3, 1.74×10-2, 1.74×10-1 and 1.00 mL of sperm.mL-1 of water) and water temperature (5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 ºC) on spermatozoa motility […]

Keywords: fish; Loricariidae; oocyte; reproduction; semen

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Digestible methionine + cystine requirement for Nile tilapia from 550 to 700 g

Mariana Michelato, Wilson Massamitu Furuya, Themis Sakaguti Graciano, Luiz Vítor Oliveira Vidal, Tadeu Orlandi Xavier, Lorena Batista de Moura, [...]

01/Jan/2013

Digestible methionine + cystine requirement for Nile tilapia from 550 to 700 g

Mariana Michelato, Wilson Massamitu Furuya, Themis Sakaguti Graciano, Luiz Vítor Oliveira Vidal, Tadeu Orlandi Xavier, Lorena Batista de Moura, [...]

DOI: 10.1590/S1516-35982013000100002

This trial was conducted to determine the dietary digestible methionine + cystine requirement of Nile tilapia (550 to 700 g) based on the ideal protein concept. Six hundred fish were distributed in a completely randomized design with five treatments and four replicates, with 30 fish per experimental unit. The fish were fed diets containing approximately 262 g of digestible protein/kg, 3,040 kcal of digestible energy/kg and 7.90, 9.40, 10.90, 12.40 or 13.90 g of methionine + cystine/kg. The fish were […]

Keywords: amino acids; body composition; fillet yield; fish; performance; plasmatic lipid pattern

More

Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep

Marcos Neves Lopes, Magno José Duarte Cândido, Roberto Cláudio Fernandes Franco Pompeu, Rodrigo Gregório da Silva, Thaíse Cristine Ferreira de Carvalho, Weberte Alan Sombra, [...]

01/Jan/2013

Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep

Marcos Neves Lopes, Magno José Duarte Cândido, Roberto Cláudio Fernandes Franco Pompeu, Rodrigo Gregório da Silva, Thaíse Cristine Ferreira de Carvalho, Weberte Alan Sombra, [...]

DOI: 10.1590/S1516-35982013000100003

This study evaluated the biomass flow of massai grass in regrowth subjected to different nitrogen levels (control – no fertilization; 400; 800; and 1200 N kg ha-1year-1) and under rotational stocking with sheep, in a completely randomized design with repeated measures over time. The leaf elongation rate increased with increasing nitrogen levels (N) and the fourth grazing cycle presented a lower value compared with the others. The stem elongation rate responded linearly with increasing levels of N, but it was […]

Keywords: morphogenesis; nitrogen fertilization; Panicum maximum x Panicum infestum

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Morphogenesis of native grasses of Pampa Biome under nitrogen fertilization

Juliana Medianeira Machado, Marta Gomes da Rocha, Fernando Luiz Ferreira de Quadros, Anna Carolina Cerato Confortin, Aline Bosak dos Santos, Maria José de Oliveira Sichonany, [...]

01/Jan/2013

Morphogenesis of native grasses of Pampa Biome under nitrogen fertilization

Juliana Medianeira Machado, Marta Gomes da Rocha, Fernando Luiz Ferreira de Quadros, Anna Carolina Cerato Confortin, Aline Bosak dos Santos, Maria José de Oliveira Sichonany, [...]

DOI: 10.1590/S1516-35982013000100004

Morphogenetic and structural characteristics of the native grasses of the Pampa Biome Andropogon lateralis, Aristida laevis, Axonopus affinis, Erianthus angustifolius, Paspalum notatum, Paspalum plicatulum, Piptochaetium montevidense and Sorghastrum pellitum were evaluated as to the effect of nitrogen (N) fertilization (zero and 100 kg N/ha). The experimental design was of randomized blocks with three replicates in a 8 × 2 (native grasses × N) factorial arrangement. Accumulated thermal sums of 350 and 700 degree days determined the interval between cuts for […]

Keywords: leaf elongation rate; leaf lifespan; number of green leaves; phyllochron

More

Repeatability of agronomic characters in Brachiaria brizantha cultivars

Janaina Azevedo Martuscello, Thiago Gomes dos Santos Braz, Liana Jank, Daniel de Noronha Figueiredo Vieira da Cunha, Madson Williame Melo Souza, Gerlane Ferreira de Brito, [...]

01/Jan/2013

Repeatability of agronomic characters in Brachiaria brizantha cultivars

Janaina Azevedo Martuscello, Thiago Gomes dos Santos Braz, Liana Jank, Daniel de Noronha Figueiredo Vieira da Cunha, Madson Williame Melo Souza, Gerlane Ferreira de Brito, [...]

DOI: 10.1590/S1516-35982013000100005

This experiment was carried out with the objectives of determining repeatability coefficients, the number of harvests necessary to increase accuracy and the genotypic stability of yield characteristics in Brachiaria brizantha cultivars in the northeast region of Brazil in the period from July 2009 to March 2011. The experimental design used was completely randomized with three treatments (Brachiaria brizantha var. Marandu, Xaraés and Piatã) and three replications. Each plot was harvested seven times: five in the rainy season and two in […]

Keywords: forage breeding; forage production; selection

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Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics

Braulio Maia de Lana Sousa, Manoel Eduardo Rozalino Santos, Hélio Henrique Vilela, Márcia Cristina Teixeira da Silveira, Gabriel de Oliveira Rocha, Cássia Aparecida Soares Freitas, [...]

01/Jan/2013

Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics

Braulio Maia de Lana Sousa, Manoel Eduardo Rozalino Santos, Hélio Henrique Vilela, Márcia Cristina Teixeira da Silveira, Gabriel de Oliveira Rocha, Cássia Aparecida Soares Freitas, [...]

DOI: 10.1590/S1516-35982013000100006

The study was carried out between March 1st and July 1st, 2011, in order to evaluate the tillering pattern of the deferred Piata palisade grass (Brachiaria brizantha cv. Piata). Three sward heights were evaluated in the beginning of the period of deferment: lower (20 cm), medium (30 cm) and higher (40 cm). The experimental design was of completely randomized blocks with three replications. The Piata palisade grass deferred with low initial height presented lower leaf area index, lower light interception […]

Keywords: Brachiaria brizantha; deferred grazing; ecophysiology; tiller

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Protein metabolism, feed energy partitioning, behavior patterns and plasma cortisol in Nellore steers with high and low residual feed intake

Rodrigo da Costa Gomes, Roberto Daniel Sainz, Paulo Roberto Leme

01/Jan/2013

Protein metabolism, feed energy partitioning, behavior patterns and plasma cortisol in Nellore steers with high and low residual feed intake

Rodrigo da Costa Gomes, Roberto Daniel Sainz, Paulo Roberto Leme

DOI: 10.1590/S1516-35982013000100007

The objective was to evaluate protein turnover, nitrogen balance, feed energy partitioning, behavior patterns and plasma cortisol in Nellore (B. indicus) cattle with high and low residual feed intake (RFI = actual minus expected dry matter intake). Seventy-two Nellore steers (16 to 21 months-old, 334±19 kg initial body weight) were fed a feedlot diet for 70 days ad libitum. Daily dry matter intake (DMI) and average daily gain (ADG) were recorded individually and RFI was calculated. The 12 steers of […]

Keywords: 3-methyl-histidine; Bos indicus; feed efficiency; methane; net feed intake; zebu

More

Quantitative and qualitative characteristics of the non-carcass components and the meat of lambs fed sunflower seeds and vitamin E

Natália Ludmila Lins Lima, Américo Garcia da Silva Sobrinho, Fabiana Alves de Almeida, Viviane Endo, Nivea Maria Brancacci Lopes Zeola, Amélia Katiane de Almeida, [...]

01/Jan/2013

Quantitative and qualitative characteristics of the non-carcass components and the meat of lambs fed sunflower seeds and vitamin E

Natália Ludmila Lins Lima, Américo Garcia da Silva Sobrinho, Fabiana Alves de Almeida, Viviane Endo, Nivea Maria Brancacci Lopes Zeola, Amélia Katiane de Almeida, [...]

DOI: 10.1590/S1516-35982013000100008

The objective of this investigation was to evaluate the weight and percentage of the non-carcass components and the mineral content (macro minerals and trace minerals), crude protein, ether extract, moisture and vitamin E of the heart, liver, tongue, lungs, reticulum, kidneys and meat from the longissimus dorsi of lambs in feedlot finishing. Thirty-two non-castrated Ile de France male lambs, fed diets containing sunflower seeds and vitamin E from 15 to 32 kg of body weight were allotted in a completely […]

Keywords: minerals; organs; viscera; vitamin E; yield

More

Performance, carcass characteristics and gain cost of feedlot cattle fed a high level of concentrate and different feed additives

Érico Rodrigues, Mário De Beni Arrigoni, Cláudia Regina Mendonça Andrade, Cyntia Ludovico Martins, Danilo Domingues Millen, Fernando Salvador Parra, [...]

01/Jan/2013

Performance, carcass characteristics and gain cost of feedlot cattle fed a high level of concentrate and different feed additives

Érico Rodrigues, Mário De Beni Arrigoni, Cláudia Regina Mendonça Andrade, Cyntia Ludovico Martins, Danilo Domingues Millen, Fernando Salvador Parra, [...]

DOI: 10.1590/S1516-35982013000100009

The objective of this study was to evaluate the effects of feeding cattle with isoprotein and isoenergetic diets, with and without the addition of polyclonal antibody preparation (PAP), yeasts (YST) or monensin sodium (MON) on performance, carcass characteristics and gain cost in feedlot. Ninety-five 20-month old bullocks (323.3±21.8 kg) were distributed in 25 pens. The completely randomized experimental design had a 2 × 2 + 1 factorial arrangement and the treatments were replicated 5 times. There was no effect of […]

Keywords: cost; feedlot; monensin; polyclonal antibody preparation; yeasts

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Copper and selenium supplementation in the diet of Brangus steers on the nutritional characteristics of meat

Arlindo Saran Netto, Marcus Antonio Zanetti, Gustavo Ribeiro Del Claro, Flávio Garcia Vilela, Mariza Pires de Melo, Lísia Bertonha Correa, [...]

01/Jan/2013

Copper and selenium supplementation in the diet of Brangus steers on the nutritional characteristics of meat

Arlindo Saran Netto, Marcus Antonio Zanetti, Gustavo Ribeiro Del Claro, Flávio Garcia Vilela, Mariza Pires de Melo, Lísia Bertonha Correa, [...]

DOI: 10.1590/S1516-35982013000100010

Twenty-eight Brangus cattle were used to determine the effect of copper and selenium supplementation on the carcass characteristics, fatty acid composition of the longissimus dorsi muscle and on the copper and selenium concentrations in the liver. The treatments were: no supplementation of copper or selenium; 2 mg Se/kg DM as sodium selenite; 40 mg Cu/kg DM as copper sulfate; and 2 mg Se/kg DM as sodium selenite and 40 mg Cu/kg DM as copper sulfate. The fat thickness, rib eye […]

Keywords: cattle; concentrations; fatty acids; minerals

More

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ISSN: 1516-3598 (printed version from 1997 to 2009)

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