Perinatal mortality is a major issue in laboratory mouse breeding. We compared counting method using daily checks (DAILY_CHECK) with combining detailed video analyses to detect cannibalisms (VIDEO_TRACK) for estimating the number of C57BL/6 pups that were born, died and weaned 193 litters from trios (TRIO-OVERLAP) or without (TRIO-NO_OVERLAP) presence another litter. Linear mixed models used at...

Reservoirs have been built in almost all of the hydrographic basins of Brazil. Their purposes include water supply for cities, irrigation and mainly, generation of electricity. There are more than 700 large dams and associated reservoirs in the large rivers of the country. These reservoirs favor local and regional economic development, but they also bring serious and irreversible alterations in...

Due to rising energy demands and abundant untapped potential, hydropower projects are rapidly increasing in the Neotropics. This is especially true in the wet and rugged Andean Amazon, where regional governments are prioritizing new hydroelectric dams as the centerpiece of long-term energy plans. However, the current planning for hydropower lacks adequate regional and basin-scale assessment of ...

Crossbreeding studies between Meishan (MS) and Large White (LW) pigs have illustrated that increased piglet growth before weaning is attributed to the maternal genotype of LW dams. The objective of this study was to determine the contributions of the maternal uterine environment (MUE), piglet genotype (PigG), piglet age (PA), and their interactions on piglet growth, lactation performance, milk ...

Dams have made important contributions to human development, and the benefits derived from them have been considerable (World Commission on Dams, 2000). With the rising global population and desire to increase quality of life, dams are prominently staged to deliver hydropower, irrigation and drinking water supplies, recreation, navigation, and many other resources to the growing planet. Further...

The study involved 44 primiparous, 2-yr-old heifers and 74 multiparous cows, 3 or 4 yr old, bred to a single Charolais bull. Variables were dam age (heifer, H; or cow, C), restricted (RE) or forced (FE) exercise for the last 90 d precalving, and natural (NP) or induced (IP) parturition. The RE dams were held in drylots; FE dams were on range until d 260 to 267 and walked 3.2 km/d for feed and w...

—Many studies have assessed the effects of large dams on fishes and macroinvertebrates, but few have examined the effects of lowhead dams. We sampled fishes, macroinvertebrates, habitat, and physicochemistry monthly from November 2000 to October 2001 at eight gravel bar sites centered around two lowhead dams on the Neosho River, Kansas. Sites included a reference site and a treatment site both ...

Rabbit dams fed 0.1% BSA for various periods before and during lactation produced anti-BSA of low avidity and IgG isotype in serum and milk. Milk anti-BSA and IgG concentrations were one-third to one-half of those in the serum. At birth, kits had IgG and anti-BSA serum concentrations approximately equal to their dams. Both fell rapidly for the first 10-20 days, levelling off at about 1 mg IgG/m...

A total of 56 selection indices were computed in Brown strain of Japanese quail based on the body weights at 1, 2, 3 and 4 weeks of age with its dams AFE, dams EP16, dams EW16 and dams EM16. The aggregate genetic gain (δH) expected from the selection indices constructed with dams performance, of body weights at different ages ranged from 0.28 to 90.22, 0.71 to 99.58, 0.69 to 90.27 and 1.69 to 6...

This paper analyzes and discusses results from "Identifying Motivations for DAMS Migration: A Survey," which traces institutions' motivations for migrating from one DAMS to another. Using data from the survey, the researchers ask two questions: "What motivations prompted institutions to migrate from one DAMS to another?" and "In what directions are institutions moving?" The researchers find tha...