This study investigated the effects of indoor stocking density on performance, egg quality, and welfare status of a native chicken, Beijing You Chicken (BYC), during 22 to 38 wk. A total of 1,040 19-wk-old BYC pullets were randomly allocated to 4 groups (2 replicates each) and reared in 8...

The study was conducted to evaluate the effects of dietary chlorogenic acid supplementation on the growth performance, antioxidant function, and immune response of broiler breeders exposed to immune stress or high stocking density stress. The test was divided into two stress models. For the immune ...

This study evaluated the effects of housing system (cage versus pen), sex and line cross (EMY1 and EMY2) on meat quality in meat-type chickens. Chickens (n=640) from each line cross (males: females=1:1) were housed in batteries from d 1 to 28. Then, half of them were transferred to indoor floor ...

Aims: The purpose of this research was to assess the effect of chlorogenic acid (CGA) in the diet on ileac structure, barrier function, immunological state, and microbial profile of broiler chickens in a high stocking density (HD) environment. Methods: Four hundred and seventy-six male AA broiler...

The present study was conducted to evaluate the effects of different rearing methods and stocking densities on carcass yield and proximate composition of meat in small-sized meat ducks. A total of 555 one-day-old birds were randomly allocated to six treatment groups (three replicates per treatment, ...

Housing systems used in the production of poultry meat vary worldwide dependent on climate, land availability, and other resources essential for production. Reported here are comparisons between pen and cage rearing (the housing system, denoted HS), line crosses (LC), two native Chinese lines (EM...

Background: Cage-rearing in laying ducks, as a novel rearing system, not only fundamentally solves the pollution problem of the duck industry and improve bio-safety and product quality but also exhibits more benefits by implementing standardized production compared with the floor-rearing. Of...

To study and determine the key environmental parameter problem areas in the cascading cage-rearing meat duck house in summer, optimize the number and layout of fan operation, and realize precision environment control, a total of 23 measuring points were set in the 96 m (length)×17 m (width)×5.3 m...

Chlorogenic acids (CGA) are widely used as feed additives for their ability to improve growth performance and intestinal health in poultry. However, whether dietary CGAs could reverse the impaired intestinal condition caused by high stocking density (HD) in broiler chickens is unknown. We...

The growth and survival of pearl oyster postlarvae (Pinctada martensii) were studied under laboratory conditions. A face-centered central composite experimental design was used with 3 factors, temperature (18-34°C), algal ration (5-100 cells μL^-1) and stocking density (0.2-3.0 in.. mL^-1). Pearl...