Results 11 to 20 of about 7,051 (197)

Intervalo de partos de fêmeas bovinas Nelore, Guzerá x Nelore, Red Angus x Nelore, Marchigiana x Nelore e Simental x Nelore [PDF]

Revista Brasileira de Zootecnia, 2006
Neste trabalho foram analisadas 286 observações de intervalo do primeiro ao segundo parto (IEP1) e 1.106 observações de intervalo de partos, considerando-se todos os partos (IEP2), de 89 fêmeas Nelore (NN), 47 F1 Guzerá x Nelore (GN), 76 F1 Red Angus x Nelore (RN), 35 F1 Marchigiana x Nelore (MN) e 39 F1 Simental x Nelore (SN).
Perotto, Daniel, Abrahão, José Jorge dos Santos, Kroetz, Inácio Afonso   +2 more
openaire   +4 more sources

Accuracy of genotype imputation in Nelore cattle [PDF]

Genetics Selection Evolution, 2014
Genotype imputation from low-density (LD) to high-density single nucleotide polymorphism (SNP) chips is an important step before applying genomic selection, since denser chips tend to provide more reliable genomic predictions. Imputation methods rely partially on linkage disequilibrium between markers to infer unobserved genotypes.
Carvalheiro, Roberto, Boison, Solomon A, Neves, Haroldo H R, Sargolzaei, Mehdi, Schenkel, Flavio S, Utsunomiya, Yuri T, O'Brien, Ana Maria Pérez, Sölkner, Johann, Mcewan, John C, van Tassell, Curtis P, Sonstegard, Tad S, Garcia, José Fernando   +11 more
openaire   +6 more sources

Desempenho até a desmama de bezerros Nelore e cruzas com Nelore [PDF]

Revista Brasileira de Zootecnia, 2001
Foi analisado o desempenho ponderal pré-desmama de bezerros Nelore (N), Guzerá x N (GN), Red Angus x N (RN) e Marchigiana x N (MN), oriundos de um experimento de cruzamentos realizado na Estação Experimental do IAPAR de Paranavaí, nascidos no período de 1985 a 1998, produzidos por meio de inseminação artificial, em duas estações anuais de nascimento ...
Cubas, Antonio Carlos, Perotto, Daniel, Abrahão, José Jorge dos Santos, Mella, Sílvio Carlos   +3 more
openaire   +5 more sources

Cervical Vertebral Stenotic Myelopathy in a Nelore Calf

Veterinary Sciences, 2022
This paper aims to report clinical, laboratory, radiographic, and pathological features in a case of cervical vertebral stenotic myelopathy (CVSM) affecting a 4-month-old Nelore calf for the first time. During physical examination, the calf could stand if assisted when lifting by the tail but fallen to the ground when trying to walk.
Mariana de Oliveira Bonow, José Renato Junqueira Borges, Isabel Luana de Macêdo, Davi Emanuel Ribeiro de Sousa, João Marcelo Azevedo de Paula Antunes, Márcio Botelho de Castro, Antonio Raphael Teixeira-Neto, Benito Soto-Blanco, Antonio Carlos Lopes Câmara   +8 more
openaire   +3 more sources

A review of thermal stress in cattle

Australian Veterinary Journal, Volume 101, Issue 11, Page 417-429, November 2023., 2023
Cattle control body temperature in a narrow range over varying climatic conditions. Endogenous body heat is generated by metabolism, digestion and activity. Radiation is the primary external source of heat transfer into the body of cattle. Cattle homeothermy uses behavioural and physiological controls to manage radiation, convection, conduction, and ...
RW Shephard, SK Maloney
wiley   +1 more source

High throughput analysis of MHC class I and class II diversity of Zambian indigenous cattle populations

HLA, Volume 101, Issue 5, Page 458-483, May 2023., 2023
The classical MHC class I and class II molecules play key roles in determining the antigenic‐specificity of CD8+ and CD4+ T‐cell responses—as such characterisation of the repertoire of MHCI and MHCII allelic diversity is fundamental to our ability to understand, and potentially, exploit how genetic diversity influences the outcome of immune responses ...
Isaac Silwamba, Deepali Vasoya, Martin Simuunza, Thomas Tzelos, King S. Nalubamba, Edgar Simulundu, Christina Vrettou, Geoffrey Mainda, Mick Watson, John Bwalya Muma, Timothy Connelley   +10 more
wiley   +1 more source

Produtividade à Desmama de Novilhas Nelore e F1 Bos taurus x Nelore e Bos indicus x Nelore [PDF]

Revista Brasileira de Zootecnia, 2001
A eficiência produtiva das vacas de corte está relacionada com o tamanho do animal, a fertilidade e a produção de leite. Este trabalho avaliou a eficiência à desmama de 289 novilhas sendo 100 Nelore (N), 47 F1 Guzerá x Nelore (GN), 67 F1 Red Angus x Nelore (RN), 37 F1 Marchigiana x Nelore (MN) e 38 F1 Simental x Nelore (SN) da Est. Exp. Paranavaí/IAPAR.
Perotto, Daniel, Abrahão, José Jorge dos Santos, Kroetz, Inácio Afonso   +2 more
openaire   +5 more sources

Application of gender‐ablated semen during timed artificial insemination following oestrous synchronization in dairy and beef cows

Reproduction in Domestic Animals, Volume 58, Issue 4, Page 529-536, April 2023., 2023
Abstract The objectives of this study were to compare oestrous synchronization expression and conception rate following timed artificial insemination (TAI) with frozen–thawed X‐sexed or unsexed semen in dairy and beef cows. For this study, 227 cows (dairy, n = 130 and beef, n = 97) were assigned to a 9‐day Ovsynch + controlled intravaginal drug release
Thabang Luther Magopa, Masindi Lottus Mphaphathi, Thendo Mulaudzi   +2 more
wiley   +1 more source

Effect of Different Protocols of Fixed‐Time Artificial Insemination on Mucus, Ovarian Size, and Pregnancy of Mixed‐Breed Cows in the Humid Tropics of Peru

Veterinary Medicine International, Volume 2023, Issue 1, 2023., 2023
The objective of the research was to evaluate three synchronization protocols for fixed‐time artificial insemination (FTAI) in Bos indicus with Bos taurus crossbred cows. Forty‐five cows of 5 ± 1.6 years were selected. The Jsynch treatment consisted of the application of an intravaginal device plus benzoate; on day 8, the device was removed and PGF2α ...
Clavel Diaz-Quevedo, Alonso Ramírez García, Lenin Torres Bernal, Jorge Cáceres Coral, Gustavo Ampuero Trigoso, José Américo Saucedo-Uriarte, Sumanta Nandi   +6 more
wiley   +1 more source

Characterization of novel lncRNA muscle expression profiles associated with meat quality in beef cattle

Evolutionary Applications, Volume 15, Issue 4, Page 706-718, April 2022., 2022
Abstract The aim of this study was to identify novel lncRNA differentially expressed (DE) between divergent animals for beef tenderness and marbling traits in Nellore cattle. Longissimus thoracis muscle samples from the 20 most extreme bulls (of 80 bulls set) for tenderness, tender (n = 10) and tough (n = 10) groups, and marbling trait, high (n = 10 ...
Maria Malane Magalhães Muniz, Larissa Fernanda Simielli Fonseca, Daiane Cristina Becker Scalez, Aroa Suarez Vega, Danielly Beraldo dos Santos Silva, Jesus Aparecido Ferro, Artur Loyola Chardulo, Fernando Baldi, Angela Cánovas, Lucia Galvão de Albuquerque   +9 more
wiley   +1 more source