Results 121 to 130 of about 329,940 (300)

Investigação de Campylobacter fetus e Tritrichomonas foetus na mucosa prepucial de touros da região do Médio Paraíba, RJ Campylobacter fetus and Tritrichomonas foetus investigation in prepucial mucous of bulls from Médio Paraíba/RJ region, Brazil

open access: yesCiência Rural, 2009
Trinta e nove touros provenientes de propriedades de pecuária leiteira (n=9) e de pecuária de corte (n=30), situadas na região do Médio Paraíba, Rio de Janeiro (RJ), foram investigados para a presença de Campylobacter fetus e Tritrichomonas foetus.
Flávio Soares da Rocha   +7 more
doaj  

Analysis of the diversity of STR-loci in the samples of bulls of Red Scandinavian and Holstein breeds

open access: yesАграрная наука Евро-Северо-Востока
Standardized indicators of α- and β-diversity (𝒚′𝒌𝒎) calculated by DNA microsatellites (STR) in samples of bulls of Red Scandinavian (RED, n = 29) and Holstein (HOL, n = 45) breeds (each with three sub-samples) were analyzed using one-two- and ...
V. M. Kuznetsov
doaj   +1 more source

Animal breeding in organic farming:Discussion paper [PDF]

open access: yes, 2001
It is uncertain whether animals which have been bred for conventional production are capable of optimum performance in organic conditions. In conventional agriculture there is a movement towards maximum control of production conditions in order to ...
Baars, Nauta   +4 more
core  

FEED ADDITIVE FROM WASTE BREWING PRODUCTION WITH PROBIOTIC FOR FATTENING STEERS

open access: yesАлматы технологиялық университетінің хабаршысы, 2021
The article presents the results of the use of the drug "Synbiotic" for feed additives produced using the waste of the brewing industry and intended for fattening bulls.
M. . Velyamov   +8 more
doaj  

Effects of concentrate level and rapeseed meal supplementation on performance, carcass characteristics, meat quality and valuable cuts of Hereford and Charolais bulls offered grass silage-barley-based rations

open access: yes, 2013
The objectives of this experiment with Hereford (Hf) and Charolais (Ch) bulls offered grass silage-based diets were to determine the effects on performance, carcass traits and meat quality of the proportion of concentrate in the diet, and the inclusion ...
M. Pesonen   +6 more
semanticscholar   +1 more source

Estimating the Economic Value of Specific Characteristics Associated with Angus Bulls Sold at Auction [PDF]

open access: yes
The genetic traits of a purebred bull convey the reproductive and economic value to buyers. This study examines and compares the value of actual production weights (birth, weaning, and yearling weight), production expected progeny differences (EPDs ...
Dhuyvetter, Kevin C.   +3 more
core   +1 more source

Quantification of channel planform change on the lower Rangitikei River, New Zealand, 1949-2007: response to management? [PDF]

open access: yes, 2010
The Rangitikei River, a large gravel‐bed wandering river located in the North Island of New Zealand, has outstanding scenic characteristics, recreational, fisheries and wildlife habitat features.
Fuller, Ian C, Richardson, Jane M.
core  

Serum vitamin E as a potential biomarker of sperm velocity in crossbred beef bulls

open access: yesItalian Journal of Animal Science
Sperm motility is a key determinant of fertility in bulls, with velocity parameters serving as primary indicators of reproductive potential. However, the influence of systemic micronutrients on semen quality remains unclear.
Alberto Benito Diaz   +6 more
doaj   +1 more source

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