The purpose of this experiment was to compare the relationships of mammary oxygen metabolic traits, body health and mammary oxidative stress of Holstein dairy cows in different lactating periods. Eighteen early-lactating cows[days in milk: (61.80±3.72) d; milk yield: (55.65±3.95) kg/d; (2.74±0.19)...

[Objective] To explore effects of different parity of high-yield and low-yield dairy cows on milk yield, milk composition and lactation persistence, so as to provide reference for raising management pattern optimization and increasing life of dairy cows dairy cows. [Method] 12406 dairy cows from 17 ...

Individual identification of dairy cows is the prerequisite for automatic analysis and intelligent perception of dairy cows' behavior. At present, individual identification of dairy cows based on deep convolutional neural network had the disadvantages in prolonged training at the additions of new...

The mounting behaviour of dairy cows is driven by oestrus and is also related to their welfare. To improve the accuracy and speed of the detection of mounting of dairy cows in dense scenes, a detection model for the mounting behaviour of dairy cows was developed in this study based on the feature...

This experiment was conducted to investigate the effects of betaine, vitamins and electrolyte ions compound preparation on performance and serum biochemical, antioxidant and immune indexes of heat stressed dairy cows. Thirty healthy Holstein dairy cows with similar lactation day, parity, and milk...

Fibroblast growth factor 21 (FGF21) has been identified as an important regulator of carbohydrate and lipid metabolism, which plays an important role for metabolic regulation, particularly under conditions of energy deprivation or stress conditions. Dairy cows are subjected to a negative energy...

This experiment was conducted to study the effects of Bacillus amyloliquefaciens on lactation performance, milk composition and serum biochemical, immune and antioxidant indexes of dairy cows. Thirty Chinese Holstein cows with similar parity, initial body weight, milk yield and lactation days were...

This experiment was conducted to study the behavioral differences of different milk yield dairy cows, and to analysis the correlation of behavior and lactation performance of different milk yield dairy cows. Twenty-four mid-lactating [(114.6±7.5) d] China Holstein dairy cows with the average body...

Heat stress (HS) is directly correlated to mammary gland dysfunction in dairy cows, especially in summer. The hypothalamic-pituitary-mammary gland axis (HPM axis) plays an important role in the regulation of stress response and lactation physiology in heat-stressed dairy cows. The aim of this study ...

The objective of this study was to investigate the effects of Lonicera japonica extract (LJE) on performance, serum biochemical indexes and immune function of heat-stressed dairy cows, and to explore the optimum amount of LJE to effectively alleviate heat stress of dairy cows. Twenty healthy...