Background: Abnormal or stereotyped behaviours in dairy cows are common in large-scale indoor farms and are usually accompanied by high physiological stress levels. Feed tossing is an abnormal behaviour commonly seen in cows while being fed, making farm management difficult. However, the reasons...

This experiment was conducted to study effects of different supplemental levels of microbial fermentation feed on rumen fermentation function of dairy cows using an in vitro method, to determine the optimum supplemental level. On this basis, we further discussed the effects of microbial ...

The objectives of this study were to evaluate the effects different forms of Zn on feed digestibility, rumen fermentation of diatery dairy cows with high production using gas production and nylon bags techniques. The Zno naoparticles were prepared by chemical co-precipitation method. The basal diet ...

Context Fodder beet (FB) is a popular feed for dairy cows in temperate climates due to its high yields, high digestibility, low nitrogen (N) content in the dry matter (DM) and convenience of feeding (grazing in situ). However, the risk of ruminal acidosis requires research to design feeding regimes ...

Most microbiome studies of dairy cows have investigated the compositions and functions of rumen microbial communities in lactating dairy cows. The importance of the relationships among hosts, microbiota, diet composition, and milk production remains unknown in dry dairy cows. Thus, in the present...

Dairy cows have intense fluctuations in digestive, metabolic and hormonal systems around calving which predispose them to various disorders and health problems. The aim of the current experiment was to investigate feed and nutrient intake, rumen fermentation, rumen bacterial communities, milk...

Phytosterols are natural steroids in plants, possessing bioactivities that could modify gut microbes. This experiment aimed to evaluate the effects of feeding phytosterols on the community structures and metabolic functions of the rumen microbiota in perinatal cows. Perinatal cows were supplied...

Pumpkin seed cake (PSC), a byproduct of pumpkin seed oil processing, is used in ruminant feed as a beneficial protein source. Experiments were conducted to evaluate PSC as a substitute for soybean meal in the diets of lactating cows based on performance, rumen fermentation, antioxidant function and ...

Background: Rumen microbial composition and functions have vital roles in feed digestion and fermentation and are linked to feed efficiency in cattle. This study selected Holstein cows, which are high in both milk protein content and milk yield, to analyse the relationship between the rumen...

Heat stress (HS) in dairy cows causes considerable losses in the dairy industry worldwide due to reduced animal performance, increased cases of metabolic disorders, altered rumen microbiome, and other health problems. Cows subjected to HS showed decreased ruminal pH and acetate concentration and an ...