Results 21 to 30 of about 12,959 (215)

Weighted Single-Step GWAS Reveals Genetic Mechanisms Underlying Pregnancy Loss in Early Nellore Heifers. [PDF]

Anim Genet
ABSTRACT Pregnancy loss (PL) affects reproductive efficiency in beef cattle, yet its genetic architecture remains poorly understood in Bos indicus populations. Here, PL was defined as failure from pregnancy diagnosis to calving, capturing a window approximately 60 days after the breeding season.
Bis FC, Stafuzza NB, de Mattos EC, Pereira ASC, Ferraz JBS, Baldi F, Amorim ST.   +6 more
europepmc   +2 more sources

Reproductive efficiency of Nellore cows nursing Nellore or crossbred Simmental × Nellore calves [PDF]

Revista Brasileira de Zootecnia, 2013
The objective of this study was to analyze the influence of genetic group (GG) of the calf during gestation, mobilization of body reserves and period of postpartum anestrus in Nellore cows. Thirty-seven primiparous and multiparous cows were used: 24 gave birth to Nellore (NEL), and 13 gave birth to ½ Simmental × ½ Nellore (SIM) calves. According to the
Vargas Júnior, Fernando Miranda de, Wechsler, Francisco Stefano, Oliveira, Marcus Vinicius Morais de, Seno, Leonardo de Oliveira, Fernandes, Alexandre Rodrigo Mendes, Camilo, Fernando Rossi   +5 more
openaire   +6 more sources

Thermal balance of Nellore cattle [PDF]

International Journal of Biometeorology, 2017
This work aimed at characterizing the thermal balance of Nellore cattle from the system of indirect calorimetry using a facial mask. The study was conducted at the Animal Biometeorology Laboratory of the São Paulo State University, Jaboticabal, Brazil. Five male Nellore weighing 750 ± 62 kg, at similar ages and body conditions were distributed in four ...
Melo Costa, Cintia Carol de, Campos Maia, Alex Sandro, Nascimento, Sheila Tavares, Nagib Nascimento, Carolina Cardoso, Neto, Marcos Chiquitelli, Carvalho Fonseca, Vinicius de Franca   +5 more
openaire   +3 more sources

A comprehensive genomic characterization of Nellore cattle. [PDF]

BMC Genomics
Indicine cattle (Bos taurus indicus) are found primarily in tropical and subtropical regions, with Brazil hosting one of the largest Zebu cattle populations in the world. Understanding the genetic makeup of Nellore cattle is crucial for enhancing genomic predictions, performing association studies, and maintaining genetic diversity.
Campos G, Mulim H, Ventura H, Souza N, Cardoso F, de Oliveira HR.   +5 more
europepmc   +4 more sources

Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle. [PDF]

J Anim Breed Genet
ABSTRACT Sustainable beef production requires identifying animals with superior feed efficiency to reduce environmental impact and production costs. This study aimed to estimate heritability and genetic correlations between residual gain (RG) and growth, reproductive, carcass and feed efficiency traits in Nellore cattle.
Teodoro M, Gubiani G, Pereira L, Gubiani AS, Pereira ASC, Sainz R, Ulhôa Magnabosco C, Baldi F.   +7 more
europepmc   +2 more sources

Genetic Evaluation for Functional Longevity in Nellore Cattle. [PDF]

J Anim Breed Genet
ABSTRACT Stayability (STAY) presents limitations in capturing genetic variability among animals with varying calving records up to 76 months of age. Furthermore, because STAY is measured late in life (typically at 6 years of age), it inherently prolongs generation intervals.
Fernandes GSS, Dos Santos DR, Boligon AA, Santana ML, Menezes GRO, Ayres DR, Bignardi AB, Pereira RJ.   +7 more
europepmc   +2 more sources

Mitochondrial DNA of Nellore and European x Nellore crossing cattle of high performance [PDF]

Pesquisa Agropecuária Brasileira, 2007
The objective of this work was to evaluate, through a polymorphism in the ND5 gene of the bovine mitochondrial DNA, the frequency of Bos taurus indicus mtDNA individuals in a sample of Nellore purebred origin animals (n = 69) and crossbred animals originated from crosses of European sires and Nellore purebred origin females (n = 275). Only 2.26% (8/354)
Curi, Rogerio Abdallah, Mota, Lígia Souza Lima Silveira da, Silveira, Antonio Carlos   +2 more
openaire   +5 more sources

An assessment of genomic connectedness measures in Nellore cattle [PDF]

Journal of Animal Science, 2020
AbstractAn important criterion to consider in genetic evaluations is the extent of genetic connectedness across management units (MU), especially if they differ in their genetic mean. Reliable comparisons of genetic values across MU depend on the degree of connectedness: the higher the connectedness, the more reliable the comparison.
Sabrina T Amorim, Haipeng Yu, Mehdi Momen, Lúcia Galvão de Albuquerque, Angélica S Cravo Pereira, Fernando Baldi, Gota Morota   +6 more
openaire   +4 more sources

Heterosis and Heterosis Retention for Reproductive and Maternal Traits in Nellore-Angus Crossbred Cows [PDF]

, 2013
Calving rate, weaning rate, birth weight, weaning weight, and ADG from 1997 to 2011 were investigated in Angus, Nellore, F_(1) Nellore-Angus, first generation 3/8 Nellore 5/8 Angus produced as following: (1/2 Nellore 1/2 Angus sires and 3/4 Angus ...
Obeidat, Mohammad Diya Talal Hamed
core   +2 more sources

Prospective randomized study comparing safety and efficacy of standard versus tubeless percutaneous nephrolithotomy

Basrah Journal of Surgery, 2021
Objective:To prospectively compare the feasibility and safety of tubeless percutaneous nephrolithotomy (PCNL) Vs standard PCNL. Patients and methods:220 patients undergoing PCNL were randomized to two groups: Group A (tubeless PCNL) with antegrade ...
ERSHAD HUSSAIN GALETI, Vedamurthy Reddy Pogula, Abhiram KUCHERLAPATI   +2 more
doaj   +1 more source