Publications by authors named "G S Amiridis"
Roundup® (R), while it is the most used herbicide globally, and its residues are ubiquitous in urban and suburban areas, its impact on vertebrates' safety remains highly debated. Here, in three in vitro experiments, we investigated the effects of a very low dose (1 ppm) of R on the fertilization capacity and embryo development in cattle. In the first experiment, frozen-thawed bull semen exposed to R for 1 h exhibited reduced motility parameters but unaffected fertilization ability.
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- Global warming poses a serious threat to dairy farming by impacting cow welfare, fertility, and economic viability, especially due to increased summer temperatures even in temperate areas.
- Dairy cows adapt to heat stress through various biological and behavioral changes, such as releasing heat shock proteins and altering hormone levels, though these adaptations are not enough to fully maintain fertility during hot seasons.
- Despite strategies to mitigate heat stress and improve milk production, fertility rates remain low in summer because maintaining reproductive health relies on a complex interplay of energy balance and hormonal regulation.
Flaxseed and lupin seed were offered as an alternative dietary approach in dairy cows, through the partial substitution of soybean meal. Milk production and fertility traits were investigated. A total of 330 animals were allocated into two groups, treated ( = 176) and control ( = 154).
View Article and Find Full Text PDFComposition, Organoleptic Characteristics, Fatty Acid Profile and Oxidative Status of Cow's Milk and White Cheese after Dietary Partial Replacement of Soybean Meal with Flaxseed and Lupin.
Animals (Basel)
March 2023
Article Synopsis
- The study examined how replacing half of the soybean meal in dairy cow diets with flaxseed and lupins affects milk and cheese production.
- Both groups of cows had similar milk yields, but the FL group produced milk with more beneficial fatty acids and lower protein carbonyls compared to the control group.
- The resulting white cheese from the FL diet had a healthier fatty acid profile and maintained similar taste and texture characteristics to the cheese from the control group.
Article Synopsis
- Heat stress negatively impacts milk production and reproduction in dairy cows, leading to economic losses; certain cows have developed thermotolerance mechanisms that could be bred for improved resilience.
- Advances in genomics allow researchers to identify genetic variations (SNPs) linked to thermotolerance, which can enhance selective breeding programs intended to produce more heat-resistant cows.
- The study identified specific genetic markers associated with thermotolerance, particularly in genes linked to Heat Shock Proteins, suggesting paths for improving dairy cattle adaptation to heat stress.