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de Zootecnia (RBZ) is a publication of Sociedade Brasileira de Zootecnia (SBZ), aimed at disseminating original unpublished research papers that cover the broad area of Animal Science such as Animal production systems and agribusiness, Forage, Nutrition, Breeding and genetics,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de Zootecnia (RBZ) is a publication of Sociedade Brasileira de Zootecnia (SBZ), aimed at disseminating original unpublished research papers that cover the broad area of Animal Science such as Animal production systems and agribusiness, Forage, Nutrition, Breeding and genetics,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de Zootecnia (RBZ) is a publication of Sociedade Brasileira de Zootecnia (SBZ), aimed at disseminating original unpublished research papers that cover the broad area of Animal Science such as Animal production systems and agribusiness, Forage, Nutrition, Breeding and genetics,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 43, Number 8, 2014

Abundance and diversity of rumen protozoa in lambs fed Gliricidia sepium silage

Isabel Martinele, Lucas Feitosa Silva, Marta D'Agosto, Evandro Neves Muniz, José Luiz de Sá, Gladston Rafael de Arruda Santos

01/Aug/2014

Abundance and diversity of rumen protozoa in lambs fed Gliricidia sepium silage

Isabel Martinele, Lucas Feitosa Silva, Marta D'Agosto, Evandro Neves Muniz, José Luiz de Sá, Gladston Rafael de Arruda Santos

DOI: 10.1590/S1516-35982014000800006

The objective of this study was to evaluate changes in ruminal protozoa in lambs after partial replacement of feed concentrates in their diets with Gliricidia sepium silage. Twenty-four male Santa Ines lambs with an average initial weight of 14.5 kg were used. The experimental design was completely randomized, with four treatments and six replications. Treatments (given as a percentage of dry matter) were as follows: control – corn silage (600 g kg-1 as fed) + concentrate (400 g kg-1 as […]

Keywords: protein supplementation; rumen microorganism; ruminant

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Yield, chemical composition, and efficiency of use of nitrogen by Marandu grass

Tadeu Silva de Oliveira, Fernando de Paula Leonel, José Carlos Pereira, Cássio José da Silva, Danielle Ferreira Baffa, Joanis Tilemahos Zervoudakis

01/Aug/2014

Yield, chemical composition, and efficiency of use of nitrogen by Marandu grass

Tadeu Silva de Oliveira, Fernando de Paula Leonel, José Carlos Pereira, Cássio José da Silva, Danielle Ferreira Baffa, Joanis Tilemahos Zervoudakis

DOI: 10.1590/S1516-35982014000800007

The objective of this study was to evaluate the effect of five nitrogen doses on the productive and quality characteristics and the use efficiency of Brachiaria brizanthacv. Marandu grass. The treatments consisted of four doses of nitrogen (0, 60, 120, 180 and 240 kg ha-1), distributed through a completely randomized design with four replicates. Samples of the material were collected to analyze productivity variables, concentrations of neutral detergent fiber, crude protein and neutral detergent insoluble nitrogen, and in vitro dry […]

Keywords: nitrogen use efficiency; nutritional characteristics; urea

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Feeding strategies to design the fatty acid profile of sheep milk and cheese

Anna Nudda, Gianni Battacone, Oscar Boaventura Neto, Antonello Cannas, Ana Helena Dias Francesconi, Alberto Stanislao Atzori, [...]

01/Aug/2014

Feeding strategies to design the fatty acid profile of sheep milk and cheese

Anna Nudda, Gianni Battacone, Oscar Boaventura Neto, Antonello Cannas, Ana Helena Dias Francesconi, Alberto Stanislao Atzori, [...]

DOI: 10.1590/S1516-35982014000800008

The majority of sheep milk produced in the world is transformed into cheese. Feeding is a major factor affecting the quality of sheep milk and, therefore, of sheep cheese. Because fat is the main compound of cheese, this review gives an update on the effects of feeding and nutrition on milk fat content and deeply discusses feeding strategies aimed at increasing the levels of healthy fatty acids (FA), such as conjugated linoleic acid and omega-3 FA, in milk and cheese […]

Keywords: by-products; cheese; CLA; dairy sheep; milk quality; nutrition

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Early weaning and concentrate supplementation strategies for lamb production on Tifton-85 pasture

Cláudio José Araújo da Silva, Sergio Rodrigo Fernandes, Marina Gabriela Berchiol da Silva, Alda Lúcia Gomes Monteiro, César Henrique Espírito Candal Poli, Odilei Rogerio Prado, [...]

01/Aug/2014

Early weaning and concentrate supplementation strategies for lamb production on Tifton-85 pasture

Cláudio José Araújo da Silva, Sergio Rodrigo Fernandes, Marina Gabriela Berchiol da Silva, Alda Lúcia Gomes Monteiro, César Henrique Espírito Candal Poli, Odilei Rogerio Prado, [...]

DOI: 10.1590/S1516-35982014000800005

The influence of early weaning and concentrate supplementation strategies on sward characteristics, forage chemical composition and lamb productivity were evaluated in four production systems on Tifton-85 pasture: suckling lambs not supplemented until slaughter; suckling lambs supplemented with concentrate in creep feeding until slaughter; early-weaned lambs not supplemented until slaughter; and early-weaned lambs supplemented with concentrate until slaughter. Structural, morphological and productive characteristics of pasture were measured. The forage was chemically analyzed to estimate its composition. Lambs average daily gain and […]

Keywords: average daily gain; creep feeding; leaf:stem ratio; productivity; stocking rate

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New inoculants on maize silage fermentation

Fábia Giovana do Val de Assis, Carla Luiza da Silva Ávila, José Cardoso Pinto, Rosane Freitas Schwan

01/Aug/2014

New inoculants on maize silage fermentation

Fábia Giovana do Val de Assis, Carla Luiza da Silva Ávila, José Cardoso Pinto, Rosane Freitas Schwan

DOI: 10.1590/S1516-35982014000800001

The objective of this study was to evaluate the effect of bacterial inoculants at two inoculation rates on chemical and biological characteristics of maize silage. The treatments consisted of two inoculating rates (5 and 6 log cfu g-1of forage) for each strain of lactic acid bacteria (LAB) identified as Lactobacillus buchneri, L. hilgardii, or L. plantarum. The maize was ensiled in experimental PVC silos. Samples were taken for the determination of the contents of dry matter (DM), crude protein (CP), […]

Keywords: filamentous fungi; inoculation; lactic acid bacteria; volatile fatty acids; yeasts

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Productive and morphogenetic responses of buffel grass at different air temperatures and CO2 concentrations

Roberta Machado Santos, Tadeu Vinhas Voltolini, Francislene Angelotti, Saulo de Tarso Aidar, Agnaldo Rodrigues de Melo Chaves

01/Aug/2014

Productive and morphogenetic responses of buffel grass at different air temperatures and CO2 concentrations

Roberta Machado Santos, Tadeu Vinhas Voltolini, Francislene Angelotti, Saulo de Tarso Aidar, Agnaldo Rodrigues de Melo Chaves

DOI: 10.1590/S1516-35982014000800002

The objective of the present trial was to evaluate the productive and morphogenetic characteristics of buffel grass subjected to different air temperatures and CO2 concentrations. Three cultivars of buffel grass (Biloela, Aridus and West Australian) were compared. Cultivars were grown in growth chambers at three temperatures (day/night): 26/20, 29/23, and 32/26 °C, combined with two concentrations of CO2: 370 and 550 µmol mol-1. The experimental design was completely randomized, in a 3 × 3 × 2 factorial arrangement with three […]

Keywords: carbon dioxide; Cenchrus ciliaris; climate change

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Nutritive value of Tanzania grass for dairy cows under rotational grazing

Alberto Magno Fernandes, Fermino Deresz, Douglas Sampaio Henrique, Fernando César Ferraz Lopes, Leonardo Siqueira Glória

01/Aug/2014

Nutritive value of Tanzania grass for dairy cows under rotational grazing

Alberto Magno Fernandes, Fermino Deresz, Douglas Sampaio Henrique, Fernando César Ferraz Lopes, Leonardo Siqueira Glória

DOI: 10.1590/S1516-35982014000800003

A nutritional analysis of Tanzania grass (Megathyrsus maximusJacquin cv. Tanzânia was conducted. Pasture was managed in a rotational grazing system with a 30-day resting period, three days of paddock occupation and two grazing cycles. Ten Holstein × Zebu crossbred cows were kept within a 2-ha area divided into 11 paddocks ha-1. Cows were fed 2 kg of corn meal daily and performance was evaluated by weighing the animals every 14 days and by recording milk production twice a day. Nutritional […]

Keywords: animal performance; dairy cows; tropical pastures

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Reproductive responses and productive characteristics in ewes supplemented with detoxified castor meal for a long period

Liliane Moreira Silva, Aline Maia Silva, Cláudio Henrique de Almeida Oliveira, Hilton Alexandre Vidal Carneiro, Priscila Teixeira de Souza, Frederico José Beserra, [...]

01/Aug/2014

Reproductive responses and productive characteristics in ewes supplemented with detoxified castor meal for a long period

Liliane Moreira Silva, Aline Maia Silva, Cláudio Henrique de Almeida Oliveira, Hilton Alexandre Vidal Carneiro, Priscila Teixeira de Souza, Frederico José Beserra, [...]

DOI: 10.1590/S1516-35982014000800004

The objective of the present study was to evaluate the effects of supplementation with detoxified castor meal (DCM) in the diet of ewes during pregnancy, partum, and post-partum on the weight development of their offspring and at slaughter. The study included 56 ewes with synchronized estrus that were naturally mated. At the beginning of pregnancy and in post-partum, hepatic and renal function-related parameters and progesterone levels were measured. At slaughter, the proximate composition and fatty acid profile were determined in […]

Keywords: carcass; reproductive performance; Ricinus communis; sheep

More

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