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The increasing demand for organic animal products and the emergence of the problem of antibiotic resistance have prompted scientists to look for unconventional ways to improve the performance of farm animals while maintaining the health of humans, animals and the environment. Therefore, in modern livestock and poultry production systems, various ... ادامه مطلب

Research conducted on non-ruminant animals clearly shows the relationship between choline and methionine, whose common feature is donating a methyl group. By taking choline, you can consume less methionine. Choline is an essential nutrient for transitioning cows, but only for fat cows. Methionine can prevent fatty liver. Co-biology of choline ... ادامه مطلب

The extensive development of the ethanol industry from grain, which began in 2005, has been able to increase the supply of byproducts for animal feed. The availability of corn distillers’ grains (DG), which are mostly called distillers’ grains, has increased significantly, as a result of which the desire to use ... ادامه مطلب

Introduction   Chromium plays an important role in the metabolism of carbohydrates and lipids, which is one of the most important low-consumption mineral elements in human and livestock nutrition. Feeding chromium supplements to domestic animals may improve health and increase the immune response, strengthen the growth of calves, and increase ... ادامه مطلب

Nutrient requirements – amino acids For several decades, researchers have shown that animals need amino acids to make tissue proteins, regulatory proteins, protective and secretory proteins, and that hundreds of these proteins must be made daily. It is also documented that the amino acid composition of each protein is different, ... ادامه مطلب

  Health of calves at birth Evaluation of the vitality of the newborn calf The strength of the newborn calf can be measured immediately after birth by monitoring individual indicators such as; The response to exogenous stimuli, muscle tone, sucking reflex, time to raise the head and time to stand ... ادامه مطلب

Rumen pH in ruminants is controlled by absorption of volatile fatty acids from the rumen wall and saliva secretion. About 0.1% of saliva is sodium bicarbonate, which is known as the primary buffer. Saliva secretion depends on the amount of fiber in the diet, and with an increase in fiber ... ادامه مطلب

The use of mineral elements is necessary for maximum production and animal health. Selenium as a necessary but little consumed mineral, due to its change in plant sources consumed by ruminants and poultry, as well as the lack of soil selenium in many parts of the world and Iran, is ... ادامه مطلب

The ration of ruminants should ensure the continuous consumption of animal nitrogen in order to allow the animal to grow and regenerate properly and completely organs and tissues. There are sources of dietary nitrogen in protein and non-protein forms. Plant protein nitrogen is 60-80% of the total nitrogen present in ... ادامه مطلب

Usually, the nutritional needs of these animals are determined according to their age, size and physiological condition. Lactating sheep, pregnant or growing lambs need more nutrients. In some cases, phosphorus needs are more important in lactating sheep than non-lactating sheep. Providing sufficient nutrients in the diet of sheep can lead ... ادامه مطلب