Results 21 to 30 of about 68,614 (166)

Environmentally adjusted productivity growth and shadow prices for dairy farms

open access: yesCanadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, EarlyView.
Abstract We estimate the environmentally adjusted productivity growth and shadow price for Ontario dairy farms. We use an input‐oriented directional distance function and farm‐level data from 2000 to 2020. First, we find that while GHG emissions per cow increase with higher milk yields, emission intensity decreases as milk yield per cow increases.
Bibek Dahal   +2 more
wiley   +1 more source

Comportement saisonnier du bétail zébu en Adamaoua Camerounais. II. La croissance avant sevrage pour les veaux de la race locale et les métis demi-sang brahma [PDF]

open access: yes, 1968
L'auteur analyse la croissance des veaux, des zébus foulbé et des zébus métis Brahma avant sevrage. Les critères considérés sont le poids à la naissance, les poids mensuels successifs jusqu'à 8 mois et le gain de poids journalier moyen au cours de cette ...
Lhoste, Philippe
core  

Exercise‐related microRNAs in Caenorhabditis elegans regulate calcium homeostasis and mitochondrial dynamics: Conserved pathways, divergent microRNAs

open access: yesThe FEBS Journal, EarlyView.
Exercise‐related microRNAs cel‐miR‐249‐3p and cel‐miR‐77‐5p in C. elegans regulate lifespan, fitness, mitochondrial morphology and membrane potential. Although lacking direct mammalian orthologs, H2O2‐induced microRNAs mmu‐miR‐181a‐5p and mmu‐miR‐378a‐3p regulate myogenesis, autophagy, mitochondrial content and respiration in murine myoblasts ...
Qin Xia   +7 more
wiley   +1 more source

Essais d'insémination artificielle au Cameroun, à l'aide de semence congelée importée. I. Insémination artificielle de femelles zébus en chaleur naturellement [PDF]

open access: yes, 1975
Les auteurs présentent les résultats d'un programme de quatre ans d'insémination artificielle chez les femelles zébus de race locale venues naturellement en chaleur à l'aide de semence congelée de races diverses d'importation.
Lhoste, Philippe, Pierson, J.
core  

The junction between the midgut and hindgut co‐localizes with the rectosigmoid junction

open access: yesJournal of Anatomy, EarlyView.
At 5 weeks of development, the midgut has formed its primary loop (left). It is well established that the midgut is bounded cranially by the caudal end of the ventral mesentery and the presence of the common bile duct, but its caudal boundary remains to be established.
Hui Gao   +5 more
wiley   +1 more source

Le pouvoir pathogène de Dermatophilus congolensis est-il lié à la diffusion d'une toxine ? [PDF]

open access: yes, 1968
Le pouvoir pathogène de D. congolensis n'est pas en relation avec la production d'une toxine, pour autant que le montrent des tests de toxicité effectués sur des lapins, des souris, des embryons de poulet et des cellules d'embryon de veau; la recherche d'
Perreau, Pierre
core  

Prevalence and Relatedness of Salmonella in the Environments of Livestock Markets Handling Surplus Dairy Calves

open access: yesZoonoses and Public Health, EarlyView.
ABSTRACT Introduction Livestock markets are critical hubs within animal trade networks that influence pathogen dissemination at the regional and national scale. Indeed, a 2016 Salmonella serovar Heidelberg outbreak, initially linked to surplus dairy calves at livestock markets, sickened 63 people across 17 states.
Samantha R. Locke   +6 more
wiley   +1 more source

Beneficiation of phosphate sludge rejected from Djebel Onk plant (Algeria) [PDF]

open access: yes, 2019
Purpose Flotation tests have been used in order to achieve the purposes of this study which are: To obtain the highest recovery with a maximum grade of P2O5 from the tailing generated by the phosphate plant of Djebel Onk in the East of Algeria.
Benselhoub, A   +3 more
core   +1 more source

Optimal timing to assess exercise‐induced oxidative stress: A systematic review and meta‐analysis

open access: yesExperimental Physiology, EarlyView.
Abstract There is a lack of consensus on optimal timing to assess redox biomarkers post‐exercise, limiting methodological standardisation and linking oxidative stress to physiology. We determined optimal post‐exercise oxidative stress assessment times using three redox biomarkers: glutathione, F2‐isoprostanes and protein carbonyls.
Chrysovalantis Stachteas   +12 more
wiley   +1 more source

Culture du virus de la rhinotrachéite infectieuse des bovins sur les cellules testiculaires d'embryon de mouton [PDF]

open access: yes, 1964
La multiplication du virus de la rhinotrachéite infectieuse bovine peut s'effectuer sur des cellules testiculaires d'embryon de mouton, cultivées in vitro en milieu à base d'hydrolysat de lactalbumine additionné de sérum d'agneau et de veau.
Nguyen, B., Perreau, Pierre
core  

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