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Objective: To evaluate the effect of dietary fat and energy density on body weight gain, body composition, and total energy expenditure (TEE) in neutered and sexually intact cats., Animals: 12 male and 12 female cats, Procedure: Male cats were castrated (castrated male [CM]) or underwent no surgical procedure (sexually intact male [IM]). Female cats underwent ovariectomy (spayed female [SF]) or laparotomy and ligation of both uterine tubes without ovary removal (sexually intact female [IF]). Cats were fed either the low-fat (LF) or high-fat (HF) diet for 26 weeks, with the final allocation consisting of 8 groups: IF-LF IF-HE SF-LF, SF-HF IM-LF, IM-HF, CM-LF, and CM-HF. Mean food intake for each group was recorded daily, and body weight was monitored weekly throughout the study. Body composition and TEE were measured before surgery in week 0 and at the end of the study (week 26) by isotope dilution (double-labelled water)., Results: N eutered cats gained significantly more body fat and body weight (53.80+/-5.79%) than sexually intact cats (27.11+/-5.79%) during the study. Body weight gain of neutered cats fed the HF diet was greater than those fed the LF diet. Following correction for body composition, TEE was similar in all groups and no pattern towards increased food intake was evident., Conclusions and Clinical Relevance: Weight gain in neutered cats was decreased by feeding an LF, low energy-dense diet. To prevent weight gain in cats after neutering, a suitable LF diet should be fed in carefully controlled meals rather than ad libitum.

Investigates the relationship between electrolyte apparent absorption and fecal quality in adult dogs differing in body size by researchers from France. Presentation of diversity on body weight and size of the domestic dog among other mammalian species; Evaluation on the potential physiological consequences in relation to the extreme variation; Indications that large-breed dogs have higher fecal water content and greater frequency of soft feces compared with small-breed dogs.

The article presents a comparative study on insulin sensitivity, insulin secretion, and plasma leptin and insulin-like growth factor-1 (IGF-1) in cats fed diets differing in protein and carbohydrate content. The study utilized normal-weight cats and were assessed with insulin sensitivity and insulin secretion, plasma leptin and IGF-1 level. Findings show that high protein diet do not affect insulin sensitivity or insulin secretion in reaction to glucose in normal-weight cats and present lower IGF-1 level in opposition to results from previous studies. Furthermore, plasma leptin is consistent with the normal weight of the cats. However, further analysis is needed to obtain specific results on the effects of diets on metabolic equilibrium of glucose in cats.

The article presents a study that determines the effect of the two dietary supplements, hydroxycitric acid and conjugated linoleic acid, on body composition, total energy expenditure, and least observed metabolism of adult neutered cats. Normal weight cats, who were fed 50 kilocalorie of a food of metabolizable energy was used in the study. The results show that cats were nonobese and their body weight was stable. It shows that dietary supplements could be more effective in young growing cats.

Examines the effects of high protein intake in nonobese neutered cats by researchers from France. Influence of dietary composition on lean body mass in the cat models; Induction of weight loss with the administration of high-protein diets; Determination on the effect of a limited energy intake of a high-protein diet on the body composition.