Purpose: To study the effects of farrowing pen and farrowing crate on behaviors of lactating sows. Method: Min pig and Yorkshire sows with similar parity, pregnancy and body condition were assigned randomly to the farrowing pen and the farrowing crate to compare the posture state, the frequencies...

The effects of broodstock sizes, shelter, illumination and stocking density on survival, ovigerous rate and fecundity were studied in red swamp crayfish (Procambarus clarkii) broodstock at water temperature of 18.2-34.6°C by a 57 day L9(3-4)orthogonal experiment. The results showed that the...

This study assessed the effects of stocking density on the growth performance, nutritional quality, and economic yield of female Chinese mitten crab (Eriocheir sinensis) in rice-crab culture system. For this purpose, juveniles (6.74 ± 0.25 g) of crabs were stocked to the rice field at five stocking ...

Social interaction facilitates the horizontal transmission of the microbiota between different individuals. However, little is known about the level of microbiota transmission in different livestock animals and different digestive tracts. The Hainan black goat and Wuzhishan pig are typical tropical ...

This study assessed the effects of stocking density (D02, 0.2 individuals/m²; D03.0.3 individuals/m²; D04, 0.4 individuals/m²; D05, 0.5 individuals/m²; D06, 0.6 individuals/m²) on Chinese mitten crab (Eriocheir sinensis; 6.25 ± 0.11 g) growth performance, tissue indices, antioxidant enzyme activity ...

This experiment was conducted to investigate the growth performance, stress and immune responses, and welfare of juvenile turbot (Scophthalmus maximus) under three different densities (initial density 9.3, 13.6, and 19.1 kg m^-2) for 120 days in a recirculating aquaculture system. Turbot were...

The number of air changes per hour (ACH), an important index for individually ventilated cages (IVC), strongly affects the cage microenvironment and the health of laboratory animals. The objective of this study was to determine whether high or low cage ventilation adversely affects the health of...

Newly hatched male layer chicks are considered as "by-products" in the egg industry and must be humanely euthanized at the hatchery. Instantaneous mechanical destruction (maceration) is the predominant euthanasia method applied in poultry hatcheries and is approved by the American Veterinary...

A suitable barn environment can promote the growth and development of beef cattle, ensure their health and welfare, and improve economic efficiency. The indoor environment of the barn is mainly influenced by factors such as temperature, humidity, ventilation, lighting and noise. In northern regions ...

This study investigated the comparison of the growth performance and nutritional qualities of Chinese mitten crab (Eriocheir sinensis) with different stocking densities (D02: 0.2 inds/m²; D03: 0.3 inds/m²; D04: 0.4 inds/m²; D05: 0.5 inds/m²; D06: 0.6 inds/m²) in rice-crab culture systems. The...