Journal of Animal Science and Technology (JAST) is a peer-reviewed, open access journal publishing original research, review articles and notes in all fields of animal science. Topics covered by the journal include: genetics and breeding, physiology, nutrition of monogastric animals, nutrition of ruminants, animal products (milk, meat, eggs and their by-products) and their processing, grasslands and roughages, livestock environment, animal biotechnology, animal behavior and welfare.

Journal of Animal Science and Technology (JAST) is a peer-reviewed, open access journal publishing original research, review articles and notes in all fields of animal science. Topics covered by the journal include: genetics and breeding, physiology, nutrition of monogastric animals, nutrition of ruminants, animal products (milk, meat, eggs and their by-products) and their processing, grasslands and roughages, livestock environment, animal biotechnology, animal behavior and welfare.

This study was conducted to assess the effect of protected organic acids on growth performance, fecal microbial composition, gas emission, and apparent total tract digestibility (ATTD) in growing pigs. A total of 80 crossbred (Landrace × Yorkshire) × Duroc) growing pigs with average initial body weight (BW) of 22.66 ± 2.45 kg were allotted to one of two dietary treatments with 8 replications and 5 pigs (3 gilts and 2 barrows) per pen in a randomized complete block design in a 6-week study with basal diets (CON) and basal diets + 0.2% microencapsulated organic acids (MOA). A trend and significant effect on average daily gain (ADG) were observed during weeks 2 and 6 ( P < 0.05), respectively. The gain–feed ratio (G:F) was increased ( P = 0.0032) in the MOA group. ADG ( P = 0.0109) and trend in G:F ( P = 0.1010) were observed in the MOA group. However, no difference was observed in the BW and average daily feed intake of pigs. Fecal Escherichia coli counts showed reduction ( P = 0.0143) at week 4. MOA supplementation had no influence on ATTD and fecal gas emission in growing pigs during the entire experiment ( P > 0.05). The MOA supplementation to the basal diet had a positive effect on the growth performance and fecal microbial composition of growing pigs.

The purpose of this study was to assess the effects of dietary supplementation with glucose oxidase (GOX) on growth performance, faecal microbial populations, meat quality, faecal gas emissions, apparent nutrient digestibility, and serum antioxidant enzyme parameters in finishing pigs. A total of...

The increasing global demand for animal-source protein underscores the importance of sustainable livestock systems, including commercial rabbit production. Rabbits are valued for their short production cycle, high prolificacy, efficient feed utilization, and favorable meat quality. In parallel, agro-industrial by-products are being explored as functional feed ingredients to improve efficiency and reduce environmental impact. Grape by-products (GBPs), including pomace, seeds, stalks, and derived extracts, are rich in polyphenols, dietary fiber, and lipid bioactives with potential physiological benefits. This scoping review synthesizes current evidence regarding the effects of GBPs on rabbit health, growth performance, nutrient digestibility, reproductive function, and meat quality. Available studies indicate that moderate dietary inclusion can enhance antioxidant status, support immune function, modulate gut fermentation, and improve meat oxidative stability without consistently compromising growth performance when appropriately formulated. Benefits appear particularly evident under environmental stress conditions. However, outcomes vary according to inclusion level, processing method, and physiological stage, and excessive inclusion may impair nutrient utilization due to fiber and tannin content. Overall, this synthesis identifies functional mechanisms, practical feeding considerations, and key knowledge gaps to inform evidence-based application of GBPs in sustainable rabbit nutrition.