Results 61 to 70 of about 14,295 (248)

Consumo alimentar e sua predição pelos sistemas NRC, CNCPS e BR-Corte, para tourinhos zebuínos confinados Feed intake and its prediction using the NRC, CNCPS and BR-Corte systems for confined young Zebu bulls

Revista Ciência Agronômica, 2012
Objetivou-se avaliar a predição de consumo de matéria seca (CMS) pelos sistemas CNCPS 5.0, NRC e BR-CORTE, bem como o consumo de nutrientes por tourinhos zebuínos confinados.
Julimar do Sacramento Ribeiro, Marcio Machado Ladeira, Otavio Rodrigues Machado Neto, Fabrício Rodrigues Campos   +3 more
doaj   +1 more source

Welfare of beef cattle

EFSA Journal, Volume 23, Issue 7, July 2025.
Abstract This Scientific Opinion provides an assessment of beef cattle welfare focusing on risks related to flooring, water access, nutrition and feeding, high environmental temperatures, lack of environmental enrichment, lack of outdoor access, minimum space allowance and mixing practices. In addition, risks related to pasture and feedlots, weaning of
EFSA Panel on Animal Health and Welfare (AHAW), Søren Saxmose Nielsen, Julio Alvarez, Anette Boklund, Sabine Dippel, Fernanda Dorea, Jordi Figuerola, Mette S. Herskin, Virginie Michel, Miguel Angel Miranda Chueca, Eleonora Nannoni, Romolo Nonno, Anja B. Riber, Karl Stahl, Jan Arend Stegeman, Hans‐Hermann Thulke, Frank Tuyttens, Giulio Cozzi, Ute Knierim, Sònia Martí, Siobhan Mullan, Sean Ashe, Giulia Cecchinato, Eliana Lima, Olaf Mosbach‐Schulz, Marika Vitali, Martina Benedetta Zanna, Christoph Winckler   +27 more
wiley   +1 more source

Genetic trend for lactation persistency in Gyr cows

Boletim de Indústria Animal, 2013
Persistency can be defined as the degree to which production is maintained after peak yield is reached. In Gyr cattle, persistency is an obstacle in milk production and profitability. So, persistency is an important trait that must be evaluated with total
Manuela Pires Monteiro da Gama, Diego Augusto Campos Cruz, Carlos Henrique Cavalari Machado, Mariana Alencar Pereira, Lúcia Galvão de Albuquerque, Lenira El Faro   +5 more
doaj  

Animal genetics 100 years ago

Animal Genetics, Volume 56, Issue 3, June 2025.
Abstract One hundred years ago, the first book with the phrase “Animal Genetics” in its title was published. It was written by F.A.E. Crew, then Lecturer in Genetics and foundation Director of the Department of Research in Animal Breeding at the University of Edinburgh. The 352 pages of text provide a most interesting summary of the knowledge of animal
Frank W. Nicholas
wiley   +1 more source

Testicular Histomorphometric Evaluation of Zebu Bull Breeds [PDF]

Brazilian Archives of Biology and Technology, 2014
The objective of this study was to evaluate the quantitative histology and testicular biometrics in zebu bulls of different breeds. Testicular fragments of Nelore (n=10), Polled Nelore (n=6), Gir (n=5), Guzerat (n=5) and Tabapuã bulls (n=5) were used. The fragments were perfusion-fixed in Karnovsky solution, embedded in glycol methacrylate and stained ...
Andreussi, Paulo Antônio Terrabuio, Costa, Deiler Sampaio, Faria, Fábio José Carvalho, Fernandes, Carlos Antônio Carvalho, Santos, Marcelo Diniz, Silva, Juliana Correa Borges   +5 more
openaire   +5 more sources

The Lost Large Mammals of Arabia

Journal of Biogeography, Volume 52, Issue 6, June 2025.
ABSTRACT Aim If successful, plans to restore the vegetation of the Arabian Peninsula (AP) as announced by the Middle East and Saudi Green Initiatives will see the greatest increase in vegetation cover since the beginning of the Holocene Humid Phase (HHP), roughly 9–10,000 years ago.
Christopher Clarke, Sultan M. Alsharif
wiley   +1 more source

The Indian zebu in Brazilian lands

Historia Agraria. Revista de agricultura e historia rural, 2018
In this article we will examine the history of Brazilian cattle breeding in the early twentieth century, focusing on the transitional period of intensification of production, when the racial standardization of cattle began to be considered key to industrializing breeding practices. To this end, we consider the initiatives of a group of farmers from the
openaire   +3 more sources

Efficacy of Short‐Term Timed Artificial Insemination Protocols With Estradiol Esters and PGF2α in Girolando Cows

Reproduction in Domestic Animals, Volume 60, Issue 5, May 2025.
ABSTRACT Using a synchronisation protocol based on estradiol esters and prostaglandin, established in cattle since the 1970s, we implemented 24 or 48‐h intervals between hormone administration and timed artificial insemination (TAI). This study compared two short‐duration TAI protocols using estradiol benzoate (EB) and cypionate (EC) as ovulation ...
Mariana dos Santos Dutra Okada, Lara Nogueira Silenciato, Samuel Rodrigues Bonamichi do Couto, Joaquim Esquerdo Ferreira, Marco Roberto Bourg de Mello   +4 more
wiley   +1 more source

Parâmetros Populacionais do Rebanho Gir Mocho Registrado no Brasil

Revista Brasileira de Zootecnia, 2001
O objetivo deste trabalho foi descrever a estrutura da população do rebanho Gir Mocho registrado no Brasil. Foram geradas estatísticas descritivas da distribuição do número de progênies, estimados o intervalo de gerações e o tamanho efetivo da população,
Fábio José Carvalho Faria, Anibal Eugênio Vercesi Filho, Fernando Enrique Madalena, Luiz Antônio Josahkian   +3 more
doaj  

Genetic variability of 10 microsatellite markers in the characterization of Brazilian Nellore cattle (Bos indicus)

Genetics and Molecular Biology, 2006
We assessed the polymorphism of 10 microsatellites in Brazilian Nellore cattle (Bos indicus) using a commercial multiplex system. Allele frequencies, polymorphism information content, heterozygosity and exclusion probability were calculated.
Marcelo Cervini, Flávio Henrique-Silva, Norma Mortari, Euclides Matheucci Jr   +3 more
doaj   +1 more source