Enteric Methane Emission from Cattle Grazing Systems with Cover Crops and Legume-Grass Pasture.

This study aims to quantify enteric methane (CH) emission and dry matter intake (DMI) in beef steers under two rotational grazing systems: (i) a mixture of cover crops (vetch + ryegrass + forage radish) (CC) and (ii) alfalfa and fescue pasture (AFP). Eighteen Hereford steers were divided into two groups (nine steers per group), assigned to either the CC or AFP. Methane emissions were measured using the SF tracer technique.

A meta-analytic review of accuracy and bias in romantic partner perceptions.

People's perceptions of their romantic partners are somewhat accurate but also contain biases. In the current meta-analytic review, we sought to examine overall levels of accuracy and bias in romantic partner perceptions and moderators of accuracy and bias. We examined tracking accuracy (k = 157), projection (k = 157), indirect accuracy (k = 69), and mean-level bias (k = 153) in perceptions of a romantic partner across samples that estimated tracking accuracy and projection simultaneously.

Daily perceptions of romantic partner autonomy support and undermining of health behavior.

Objective: This study examined accuracy and bias in daily perceptions of a romantic partner's autonomy support and undermining of health behaviors and the associations between misperceptions and both partners' daily experiences.

Design: A sample of 106 cohabiting couples from the community completed daily reports ( = 2377) of their own and their partner's autonomy support and undermining, and their daily experiences.

Results: We found tracking accuracy and projection in perceptions of provider's autonomy support and undermining, and evidence of misperceptions: people over-perceived the provider's undermining and under-perceived the provider's autonomy support.

Beef Steers and Enteric Methane: Reducing Emissions by Managing Forage Diet Fiber Content.

Understanding the methane (CH) emissions that are produced by enteric fermentation is one of the main problems to be solved for livestock, due to their GHG effects. These emissions are affected by the quantity and quality of their diets, thus, it is key to accurately define the intake and fiber content (NDF) of these forage diets. On the other hand, different emission prediction equations have been developed; however, there are scarce and uncertain results regarding their evaluation of the emissions that have been observed in forage diets.

Development of a Mobile Open-Circuit Respiration Head Hood System for Measuring Gas Exchange in Camelids in the Andean Plateau.

Peru has the largest inventory of alpacas worldwide. Despite their importance as a source of net income for rural communities living at the Andean Plateau, data on energy requirements and methane (CH) emissions for alpacas are particularly lacking. In 2019, the International Panel on Climate Change (IPCC; 2006, and Refinement 2019) outlined methods for estimating CH emissions from enteric fermentation and no methane (CH) conversion factors were reported for camelids.