Revista Brasileira de Zootecnia

The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.

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Revista Brasileira de Zootecnia

The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.

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Revista Brasileira de Zootecnia

The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.

  • About
    • History
    • Focus and scope
    • Editorial policies
    • Editorial board
    • Editorial team
  • Available issues
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    • Instructions to authors
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    • Open Science Compliance form
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Volume 44, Issue 1, 2015

Seasonal variation in sperm characteristics of boars in southern Uruguay

Hugo Petrocelli, Carlos Batista, Jaime Gosálvez

01/Jan/2015

Seasonal variation in sperm characteristics of boars in southern Uruguay

Hugo Petrocelli, Carlos Batista, Jaime Gosálvez

DOI: 10.1590/S1806-92902015000100001

The objective of this study was to evaluate the effects of season, natural photoperiod, and room temperature at the housing facility on boar semen characteristics in Uruguay (34º66’S; 56º29’W). For this purpose, 117 ejaculates, obtained from eight adult males collected through 12 consecutive months, were assessed for sperm viability, DNA integrity, abnormalities (total, primary, and secondary), ejaculate volume, and sperm concentration. Viability, total and primary abnormalities, volume, and sperm concentration were affected by season. Sperm viability, volume, and sperm concentration […]

Keywords: boar; natural photoperiod; season; semen quality

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Seasonal and circadian variation of the sexual behavior of Morada Nova rams in tropical environment

Severino Guilherme Caetano Gonçalves dos Santos, Edilson Paes Saraiva, Edgard Cavalcanti Pimenta Filho, Luana de Fátima Damasceno dos Santos, Vinícius de França Carvalho Fonsêca, Tarsys Noan Silva Veríssimo, [...]

01/Jan/2015

Seasonal and circadian variation of the sexual behavior of Morada Nova rams in tropical environment

Severino Guilherme Caetano Gonçalves dos Santos, Edilson Paes Saraiva, Edgard Cavalcanti Pimenta Filho, Luana de Fátima Damasceno dos Santos, Vinícius de França Carvalho Fonsêca, Tarsys Noan Silva Veríssimo, [...]

DOI: 10.1590/S1806-92902015000100002

The objective of this study was to evaluate the seasonal and daily variation in sexual behavior of Morada Nova breeders raised in the Brazilian semi-arid region. The data were collected from four rams and 114 ewes of the Morada Nova breed – 55 females in the dry season and another 59 in the rainy season. Observations were performed in the dry and rainy seasons, divided into four times of the day: morning (05:01 h to 11.00 h), afternoon (11.01 h […]

Keywords: dry season; food resources; libido test; photoperiod

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Response of laying hens to methionine + cystine intake by dilution technique

Hilda Cristina Palma Bendezu, Nilva Kazue Sakomura, Luciano Hauschild, Edney Pereira da Silva, Juliano Cesar de Paula Dorigam, Euclides Braga Malheiros, [...]

01/Jan/2015

Response of laying hens to methionine + cystine intake by dilution technique

Hilda Cristina Palma Bendezu, Nilva Kazue Sakomura, Luciano Hauschild, Edney Pereira da Silva, Juliano Cesar de Paula Dorigam, Euclides Braga Malheiros, [...]

DOI: 10.1590/S1806-92902015000100003

The objective of this study was to measure the response of Dekalb White laying hens to different intakes of digestible methionine + cystine (met+cys) to optimise their performance. Two hundred eighty-eight Dekalb White laying hens, ranging in age from 33 to 48 weeks, were used in the study. The birds were randomly allocated into eight treatment (levels of met+cys and the control treatment) groups with six replicates of six hens per unit. The experimental diets consisted of seven increasing levels […]

Keywords: broken line; dose-response; models; requirement; statistic

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Effects of supplementation with Saccharomyces cerevisiae and aerobic training on physical performance of Mangalarga Marchador mares

Tiago Resende Garcia, Adalgiza Souza Carneiro de Rezende, Pablo Trigo, Juliano Martins Santiago, Fernando Queiroz de Almeida, Rosângela Antunes Terra, [...]

01/Jan/2015

Effects of supplementation with Saccharomyces cerevisiae and aerobic training on physical performance of Mangalarga Marchador mares

Tiago Resende Garcia, Adalgiza Souza Carneiro de Rezende, Pablo Trigo, Juliano Martins Santiago, Fernando Queiroz de Almeida, Rosângela Antunes Terra, [...]

DOI: 10.1590/S1806-92902015000100004

The objective of this study was to assess the effects of supplementation with Saccharomyces cerevisiae on the performance of Mangalarga Marchador equines and to verify the effectiveness of the aerobic training protocol adopted. The study used 14 Mangalarga Marchador mares in a completely randomized split-plot design. The plots were made up of two treatments (groups Probiotic and Control) and the split plots comprised two maximal-effort physical tests applied both before and after the six weeks of training. The animals’ spirometric […]

Keywords: equine; nutrition; probiotic; spirometry

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Productive performance and blood parameters of bulls fed diets containing babassu mesocarp bran and whole or ground corn

Aline Evangelista Machado Santana, José Neuman Miranda Neiva, João Restle, Fabrícia Rocha Chaves Miotto, Luciano Fernandes Sousa, Vera Lúcia de Araújo, [...]

01/Jan/2015

Productive performance and blood parameters of bulls fed diets containing babassu mesocarp bran and whole or ground corn

Aline Evangelista Machado Santana, José Neuman Miranda Neiva, João Restle, Fabrícia Rocha Chaves Miotto, Luciano Fernandes Sousa, Vera Lúcia de Araújo, [...]

DOI: 10.1590/S1806-92902015000100005

The objective of the present study was to evaluate the effects of corn milling and the inclusion of babassu mesocarp bran (BMB) on productive performance, digestibility of dietary nutrients, and blood parameters of dairy crossbred (Holstein-Gyr) bulls finished in confinement. Twenty-four bulls were fed four different experimental diets, containing two levels of inclusion of BMB (0 and 41.24%) and corn supplied in two different forms (ground and whole), for 98 days (77 days of data collection and 21 days of […]

Keywords: average daily gain; digestibility; dry matter intake; efficiency; neutral detergent fibre intake

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

e-ISSN: 1806-9290

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