Results 41 to 50 of about 11,283 (218)

Cardiovascular Plasticity and Adaptation of High‐Altitude Birds and Mammals

open access: yesIntegrative Zoology, EarlyView.
This schematic depicts the cardiovascular adaptations of mammals and birds to high‐altitude hypoxia. It highlights key phenotypic changes in oxygen transport and cardiac responses, driven by molecular mechanisms including transcriptional regulation and genetic modifications.
Huishang She, Yanhua Qu
wiley   +1 more source

Nutritional studies with Bos Taurus and Bos Indicus calves [PDF]

open access: yes, 1976
Milk substitute diets whose dry matter contained 10 %, 20% and 30ft added fat were fed to Bos taurus calves in Scotland and !3os indicus and Bos taurus calves in Trinidad.
Black, David Hamilton
core  

Dual origins of dairy cattle farming--evidence from a comprehensive survey of European Y-chromosomal variation

open access: yes, 2011
BACKGROUND: Diversity patterns of livestock species are informative to the history of agriculture and indicate uniqueness of breeds as relevant for conservation.
Ginja, Catarina   +61 more
core   +1 more source

Trace element distribution in selected edible tissues of zebu (Bos indicus) cattle slaughtered at Jimma, SW Ethiopia. [PDF]

open access: yesPLoS ONE, 2014
The amount of trace elements present in edible bovine tissues is of importance for both animal health and human nutrition. This study presents data on trace element concentrations in semitendinosus and cardiac muscles, livers and kidneys of 60 zebu (Bos ...
Veronique Dermauw   +7 more
doaj   +1 more source

Physiological bases for understanding estrous cycle differences between bos taurus and bos indicus

open access: yes, 2010
Background: Although there is some information in the literature discussing differences of the estrous cycle of Bos taurus and Bos indicus cattle, most of the data derive from studies performed in temperate climate countries, under environmental and ...
Mattos, Maria Clara Costa   +2 more
core   +2 more sources

Bos taurus haplotypes segregating in Nellore (Bos indicus) cattle

open access: yesAnimal Genetics, 2021
SummaryBrazil is the largest exporter of beef in the world, and most of that beef derives from Nellore cattle. Although considered a zebu breed (Bos indicus), the history of Nellore cattle in Brazil is marked by the importation of bulls from India, the use of a Creole taurine (Bos taurus) maternal lineage to quickly expand the herds and backcrossing to
Y. T. Utsunomiya   +6 more
openaire   +5 more sources

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

open access: yesAustralian 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

Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle

open access: yesJournal of Animal Breeding and Genetics, EarlyView.
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.
Miller Teodoro   +7 more
wiley   +1 more source

Prevalence of Stephanofilariasis in young Bos indicus cattle in north Australia

open access: yes, 1988
[Abstract]: Four consecutive annual of calf crops of known genotype from a single property in northern Australia were examined for the presence of stephanofilarial lesions. The animals ranged in age from 60 to 348 at the time of examination.
Johnson, S. J., Toleman, Mark
core   +1 more source

Effects of Prepartum Supplementation and Yeast Fermentation Products on the Progesterone‐Modulated Transfer of Passive Immunity in Bos indicus Cows

open access: yesJournal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Inadequate colostrum intake increases risks of calf morbidity and mortality. This study investigated the effects of prepartum and early postpartum supplementation and yeast fermentation products on late‐pregnant Bos indicus cows, and the role of progesterone in mediating passive immunity transfer.
Latino G. S. Coimbra   +3 more
wiley   +1 more source

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