ABSTRACT:The expansion and intensification of agriculture frequently affect riparian zones, mainly in basins where agriculture is the most important activity. In countries with basins dominated by agricultural activities, land use change in riparian zones promotes water quality loss and biodiversity degradation. As a tool to prevent these environmental impacts, the delimitation of riparian zones and buffer strips is crucial. For that purpose, photo interpretation jobs and botanical studies are usually necessary.

ABSTRACT.- Paratuberculosis is a worldwide chronic enteric disease of ruminants, caused by Mycobacterium avium subsp. paratuberculosis (MAP). While MAP has been widely investigated all around the world, little is known about the different strains that circulate in each country.

ABSTRACT.- The citrus fruit sector is globally relevant. Considering the great contribution of agri-food systems to environmental impacts, assessing and reducing them can make a positive contribution to the environment. Life Cycle Assessment (LCA) is a widespread tool used to quantify the complex environmental interactions of agri-food systems in general and perennial fruit crops in particular. However, methodological aspects need to be harmonised to perform useful and representative LCAs on fruits.

ABSTRACT.- The citrus fruit sector is globally relevant. Considering the great contribution of agri-food systems to environmental impacts, assessing and reducing them can make a positive contribution to the environment. Life Cycle Assessment (LCA) is a widespread tool used to quantify the complex environmental interactions of agri-food systems in general and perennial fruit crops in particular. However, methodological aspects need to be harmonised to perform useful and representative LCAs on fruits.

Abstract: During land leveling topsoil of relative higher elevation zones are removed (cut) and deposited in relative lower elevation zones (fill), this operation could have negative impacts on soil conservation and potentially can affect productivity. Although land leveling is an efficient way of increasing water use efficiency and irrigation uniformity, it can be rather expensive and, in some cases, a significant movement of earth may be required. Nowadays, with the technological advancement a new option is available called Land-forming for irrigation (LFI).

Abstract CONTEXT Integrated crop-livestock systems are facing the pressure to intensify worldwide, yet decoupling crops and livestock can lead to specialized systems relying on greater external inputs and potential negative externalities. OBJECTIVE Our goal was to compare rice-pasture, as the business-as-usual rotation, with two intensified systems, rice-soybean and rice-cover crop, to address the following objectives:1) quantify partial carbon footprint (CF) including both crop and livestock, 2) develop a multi-criteria performance index based on productivity, economic, and environmental i

Abstract:Crop cycles in spring canola (Brassica napus L.) and carinata (Brassica carinata A. Braun) are controlled by temperature and photoperiod. In the central region of South America, which accounts for 90% of South American rapeseed crop production, farmers seek to sow as early as possible to maximize yield even though early sowing dates expose crops to a higher probability of frost occurrence that had not been quantified before.

Abstract To evaluate the effect of a short-term energy-protein supplementation during the peripartum on birth, colostrum, and vigour traits of lambs, 214 multiparous Corriedale pregnant ewes grazing native pastures were used. Ewes, according to body conditions score and body weight, were assigned to a 2 × 2 factorial design:type of birth (single or twin), and supplementation (yes or no). Single (n = 67) and twin bearing (n = 39) non-supplemented, and single (n = 67) and twin bearing supplemented ewes (n = 41) were observed during lambing in two similar sub-paddocks.

ABSTRACT.- Selection of genetically resistant animals is one alternative to reduce the negative impact of gastrointestinal nematodes (GIN) on sheep production. The aim of this study was to identify genomic regions associated with GIN resistance in Corriedale sheep by single-step genome-wide association studies (ssGWAS) using 170, 507 and 50K single nucleotide polymorphisms (SNPs). Analysis included 19,547 lambs with faecal egg counts (FEC) records, a pedigree file of 40,056 animals and 454, 711 and 383 genotypes from 170, 507 and 50K SNPs, respectively.

Abstract: The objective of the present study was to evaluate the productive performance and grazing behavior of 25 primiparous and 44 multiparous Holstein cows in a pasture-based automatic milking system (AMS) while experiencing heat stress (defined as a temperature-humidity index-THI ? 68). Productive traits were analyzed according to the THI from days 0, -1, -2, and -3 in relation to the milking day, and grazing behaviors (expressed as the % of daily observation time) were related to the average THI only on the day of observation.