Retrospective analysis of hepatic copper concentrations in an internal feeding colony of dogs fed a broad range of foods.

Objective: To examine the effects of age, sex, year of death/sample collection, and liver histopathology on liver copper concentrations in dogs fed a wide variety of commercial dog foods throughout their lives.

Methods: This study utilized all bioarchived liver samples collected during necropsy at time of death from 2006 to 2022 from dogs housed in a closed feeding colony. Liver samples were analyzed on a dry matter basis for copper concentration by inductively coupled plasma-optical emission spectrometry and did not require specific criteria for selection.

Retrospective analysis of dual-energy x-ray absorptiometry data demonstrates body composition changes with age in dogs and cats.

Objective: Use 18 years of dual-energy x-ray absorptiometry (DEXA) scan data to characterize how body composition changes with age in dogs and cats.

Methods: This was a retrospective observational study using data obtained from DEXA scans performed between 2006 and 2023. A total of 6,973 observations from 1,273 colony-housed dogs ≤ 1 to 16.

Neuropsychological Manifestations of Multiple Sclerosis.

This review article summarizes the literature on the cognitive impairment seen amongst people with multiple sclerosis (MS) and how that impairment can impact not only their lives but also how their care needs to be managed. Recommendations regarding screening and monitoring of cognitive issues are reviewed, as well as how common comorbidities can further impact cognition. The current literature with respect to treatment options is also summarized.

Chicken meal is not an appropriate reference protein for estimating protein quality of ingredients used in extruded diets intended for dogs.

The indicator amino acid oxidation (IAAO) method has been used to determine metabolic availability (MA) of amino acids in feedstuffs for pigs, humans, and preliminarily for cats. Peas are a commonly used protein source in grain-free extruded dog diets. However, peas have a poor sulfur amino acid (AA) ratio (methionine [Met]:cysteine) with Met being the first limiting AA.