Effects of a sorbitol-containing additive fed to dairy cows for 30 days postpartum.

The objective of this study was to determine the effects of early postpartum supplementation of Rally®, a sorbitol-containing feed additive (RAL), on lactation performance and automatic milking system (AMS) metrics on a commercial dairy farm. Multiparous (MT) and primiparous (PP) Holstein cows were randomly assigned to either RAL supplementation (570 g/d RAL; RAL-MT, n = 75, RAL-PP, n = 34) or control (CTL-MT, n = 72; CTL-PP, n = 38). The RAL cows were supplemented from 1 to 30 d in milk via an automated feed dispenser in the AMS.

Descriptive evaluation of a camera-based dairy cattle lameness detection technology.

Lameness in dairy cattle is a clinical sign of impaired locomotion, mainly caused by painful foot lesions, compromising the US dairy industry's economic, environmental, and social sustainability goals. Combining technology and on-farm data may be a more precise and less labor-intensive lameness detection tool, particularly for early detection. The objective of this observational study was to describe the association between average weekly autonomous camera-based (AUTO) locomotion scores and hoof trimming (HT) data.

New sector morphologies emerge from anisotropic colony growth.

Competition during range expansions is of great interest from both practical and theoretical view points. Experimentally, range expansions are often studied in homogeneous Petri dishes, which lack spatial anisotropy that might be present in realistic populations. Here, we analyze a model of anisotropic growth, based on coupled Kardar-Parisi-Zhang and Fisher-Kolmogorov-Petrovsky-Piskunov equations that describe surface growth and lateral competition.

Interplay between morphology and competition in two-dimensional colony expansion.

In growing populations, the fate of mutations depends on their competitive ability against the ancestor and their ability to colonize new territory. Here we present a theory that integrates both aspects of mutant fitness by coupling the classic description of one-dimensional competition (Fisher equation) to the minimal model of front shape (Kardar-Parisi-Zhang equation). We solve these equations and find three regimes, which are controlled solely by the expansion rates, solely by the competitive abilities, or by both.

Trump divide among American conservative professors.

There has been an outpouring of research on right-wing populist conservatism since the advent of the Trump presidency and right-wing movements in Europe. Yet, little research has been devoted to divisions among conservatives themselves, especially among conservative academics. Although Trump has maintained remarkable unity within the Republican Party for electoral reasons, he has fostered sharp divisions among conservative intellectuals and academicians.