Results 41 to 50 of about 10,429 (216)

Desempenho de bezerros da raça Nelore e cruzados desmamados recebendo concentrado em pastagem adubada de Cynodon dactylon cv. Coastcross Performance of weaned Nelore and crossbred calves grazing Cynodon dactylon cv. Coastcross fertilized pastures supplemented with concentrate

Revista Brasileira de Zootecnia, 2009
Em três anos de pesquisa, avaliou-se o desempenho de bezerros desmamados de quatro grupos genéticos (Nelore; Canchim × Nelore; Angus × Nelore; e Simental × Nelore) em pastagem de Cynodon dactylon, cv.
Geraldo Maria da Cruz, Armando de Andrade Rodrigues, Rymer Ramiz Tullio, Maurício Mello de Alencar, Guilherme Fernando Alleoni, Gilson Pereira de Oliveira   +5 more
doaj   +1 more source

Testicular Histomorphometric Evaluation of Zebu Bull Breeds

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 ...
Paulo Antônio Terrabuio Andreussi, Deiler Sampaio Costa, Fábio José Carvalho Faria, Carlos Antônio Carvalho Fernandes, Marcelo Diniz Santos, Juliana Correa Borges Silva   +5 more
doaj   +1 more source

Relationship of weight gain with infrared temperatures in Nelore and F1 (Nelore × Angus) heifers reared in two forage production systems1 [PDF]

Journal of Animal Science, 2018
Intensive production systems require high-yield genetics as obtained in Bos taurus × Bos indicus crossbreeding. Generally, high-producing taurine cattle are more susceptible to parasites and heat stress. This study evaluated animal performance, heat-stress measurement (infrared temperatures), and internal parasite infection with daily weight gain in ...
Tiago P Paim, Rodrigo de Oliveira Goulart, Diego A L da Silva, Janayna de Almeida Sousa, Lucas F Gonçalves, Flavio L Claudio, Guido Calgaro Júnior, Alexandra A Gléria, Leonardo C Santos, Estenio M Alves   +9 more
openaire   +2 more sources

Follicle Stimulating Hormone in Cattle Breeding: Fundamentals, Innovations, and Scope

Animal Research and One Health, EarlyView.
FSH is crucial in cattle reproduction, with exogenous administration enhancing breeding and embryo production. Recombinant FSH offers advantages over pituitary‐extracted variants, including fewer injections, reduced stress, and safer production. These innovations improve breeding efficiency, optimize reproductive outcomes, and contribute to sustainable
Muhammad Shahzad, Hubdar Ali Kolachi, Jesse Oluwaseun Ayantoye, Xiaomeng Zhang, Muhammad Usman Mehmood, Rajilan Hilali Shanga, Pengcheng Wan, Xueming Zhao   +7 more
wiley   +1 more source

Raça Crioula lageana: estudo de características de carcaça e relação entre morfologia e intervalo entre partos [PDF]

, 2011
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Agroecossistemas, Florianópolis, 2011Foram estudadas as características quali-quantitativas da carcaça dos bovinos da raça Crioula ...
Veiga, Thiago Filipe
core  

Ingestive behavior of Nellore cows and their straightbred or crossbred calves Comportamento em pastejo de vacas Nelores amamentando bezerros Nelores ou mestiços Simental × Nelore

Revista Brasileira de Zootecnia, 2010
This trial aimed to investigate the influence of calf genetic group on the ingestive behavior of Nellore dams and their offspring on pasture. Twenty one primiparous and multiparous Nellore cows were assigned to the experiment; 13 cows nursed straightbred Nellore calves; and eight cows nursed halfbred Simmental × Nellore calves.
Fernando Miranda de Vargas Junior, Francisco Stefano Wechsler, Patrícia Rossi, Marcus Vinicius Morais de Oliveira, Patrick Schmidt   +4 more
openaire   +2 more sources

Efeitos ambientais que afetam o ganho de peso pré-desmama em animais Angus, Hereford, Nelore e mestiços Angus-Nelore e Hereford-Nelore [PDF]

Revista Brasileira de Zootecnia, 2003
Foram utilizados dados de 66.035 animais das raças Nelore, Hereford, Angus e mestiços Nelore x Angus e Nelore x Hereford, para avaliar a influência da idade da vaca, idade do bezerro e data juliana de nascimento sobre o ganho médio diário dos bezerros no período pré-desmama (GMD).
Teixeira, Rodrigo de Almeida, Albuquerque, Lucia Galvão de   +1 more
openaire   +6 more sources

Does synchronising follicular wave emergence improve outcomes in non‐superstimulated donor cattle undergoing ovum pick‐up (OPU) for in vitro embryo production?

Australian Veterinary Journal, EarlyView.
In vitro embryo production (IVEP) is now a widely commercialised assisted reproductive technology used in cattle reproduction. The use of follicle‐stimulating hormone (FSH) to superstimulate donor cattle prior to ovum pick‐up (OPU) is generally regarded as an effective strategy to improve oocyte quality, developmental competence and increase embryo ...
J Bird, RP Nevard
wiley   +1 more source

Plasma Pharmacokinetic Profile of Fipronil 1% Pour‐On in Cattle: Photodegradation and the Sustained Systemic Persistence of Fipronil Sulfone

Journal of Veterinary Pharmacology and Therapeutics, EarlyView.
ABSTRACT This study characterized the long‐term pharmacokinetic profile of a 1% fipronil pour‐on formulation in Nellore bulls under field conditions. Seventeen animals received a single topical dose (1 mg/kg), and plasma concentrations of fipronil and its metabolites (sulfone and desulfinyl) were monitored for 175 days using LC–MS/MS.
Stefani Maria Ferreira, Leonila Ester Reinert Raspantini, Giselle Kindlein, Fabiano Barreto, Caroline Andrade Tomaszewski, Tamara dos Santos Castilhos, Daniel Rodrigo Hillesheim, Silvana Lima Górniak, André Tadeu Gotardo   +8 more
wiley   +1 more source

Strategical supplementation effects with rumenprotected methionine on physiological and productive parameters of Nelore cows

, 2021
The difficult to control high temperature and humidity index on bovines raised on pasture can affect the productive and reproductive efficiency of these animals, being necessary strategies to mitigate these effects.
Izquierdo, Vinicius de Souza
core   +1 more source