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An outlook on current recording and breeding programs of the Holstein cattle in Brazil. Repositório: BDPA Ano de publicação: 2007
Methane emission intensities by Holstein and Holstein × Jersey crossbreed lactating cows in two Brazilian grazing systems. The aim of this study was the evaluation of methane emissions from pure Holstein and half Jersey, half Holstein high-producing lactating cows grazing 2 different forages. Repositório: BDPA Ano de publicação: 2014
Fine mapping of tick resistance QTL on BTA23 in Gyr x Holstein population. The objective of this work was to fine map a QTL associated with tick resistance/susceptibility previously detected on BTA 23 in a Gyr x Holstein F2 population. In order to reduce the confidence inter... ... Repositório: BDPA Ano de publicação: 2011
Intensive grazing system increases milk productivity of Holstein and Jersey-Holstein crossbred dairy cows. In Brazil, despite the lack of accurate statistics on the contribution of each type of system in total milk production, it is known that pastures represent the main feed source in most production syst... ... Repositório: BDPA Ano de publicação: 2016
Energy and protein requirements of young Holstein calves in tropical condition. Our objective was to estimate the energy and protein requirements of Holstein young calves up to 87 days old. Forty-two Holstein calves aged 4 days were used. From these, ten were randomly selected an... ... Repositório: BDPA Ano de publicação: 2016
Methane emissions per area from Holstein and Holstein/Jersey dairy cows in two different grazing systems-preliminary results. The increase in greenhouse gases in the atmosphere is a widely discussed topic, with methane (CH4) generally mentioned as a gas with a global warming potential 25 times greater than carbon dioxide (CO... ... Repositório: BDPA Ano de publicação: 2016
Is it possible to increase the efficiency of in vitro embryo production in Holstein preselecting donors with more oocyte production? Repositório: BDPA Ano de publicação: 2013
Energy requirements of Holstein, Gyr, and Holstein x Gyr crossbred heifers using the respirometry technique. We aimed to determine the energy requirements for maintenance and gain of 18 prepubertal dairy heifers of three breed compositions (BC; Holstein, Gyr, and Holstein × Gyr). Diets were formulated for ga... ... Repositório: BDPA Ano de publicação: 2022
Emission intensities by Holstein and Holstein x Jersey crossbreed lactating cows in two Brazilian grazing Systems. In recent years the concern with methane (CH4) emission by enteric fermentation has become indispensable for dairy production systems. The aim of this study was to evaluate CH4 emissions from pure Hol... ... Repositório: BDPA Ano de publicação: 2014
Emission intensities by Holstein and Holstein x Jersey crossbreed lactating cows in two Brazilian. In recent years the concern with methane (CH4) emission by enteric fermentation has become indispensable for dairy production systems. The aim of this study was to evaluate CH4 emissions from pure Hol... ... Repositório: BDPA Ano de publicação: 2014

Mostrando 1 - 10 de 241 resultados.

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