Causes, prevention, and treatment strategies for fatty liver in laying hens
Most laying hens, due to the high volume of egg production and the resulting metabolic pressures, are affected by fatty liver metabolic disease to varying degrees. By learning treatment or prevention strategies for this syndrome, the negative effects on reduced egg production, poor shell quality, and mortality in breeding farms can be prevented. What is […]
Enzyme complex added to the diet in broiler chickens: effects on performance, metabolizable amount and nitrogen and phosphorus balance.
Two experiments were conducted to evaluate the effects of an enzyme complex on broiler performance, metabolizable energy, and nitrogen and phosphorus balance. In the first experiment, 960 one-day-old male Cobb broilers were placed in 3 nutritional levels and without enzymes, totaling 6 treatments, with 20 birds in each treatment. Treatments were reared with 8 replicates […]
The effect of protease supplementation on the production performance of laying hens
This experiment was conducted to evaluate the effect of protease enzyme supplementation on performance parameters and eggshell quality in laying hens. 240 44-week-old commercial laying hens of the Isa Brown breed were used in this experiment. A completely randomized design called split-plot (5 periods of 21 days) with 4 treatments and six replications (10 chickens […]
Recent advances in the role of phytase and exogenous non-starch polysaccharide degrading enzymes in poultry nutrition.
Exogenous enzymes have been widely used in poultry diets to improve production performance. However, further research is needed to evaluate the effectiveness and expand the use of enzymes in poultry feeding programs. The use of phytase to improve bird performance and reduce environmental phosphorus pollution has received less attention, partly due to the potential negative […]
How to clean and disinfect in a poultry farm
Poultry farms require regular and thorough cleaning and disinfection, especially after winter and at the end of each harvest. To clean and disinfect poultry farms, you should follow a regular process that includes dry and wet cleaning, washing surfaces and, most importantly, disinfecting the water source, building and equipment. Why is cleaning and disinfection necessary? […]
The role of microbial phytase in broiler chickens
Over the past decade, the inclusion of microbial phytase in poultry diets has increased dramatically, largely in response to increasing concerns about environmental pollution by phosphorus (P). The capacity of this feed enzyme to release P-bound phytate and reduce P excretion is now well established. Effectively, phytase is an alternative and economical source of P, […]
The role of enzymes in poultry feed and the environment
Enzymes are chemicals or catalysts released by cells. These enzymes speed up specific chemical reactions. This definition is reserved for enzymes secreted in the digestive tract to aid in the digestion of food. Today, these enzymes can be efficiently produced and added to livestock and poultry feed. Role of Protease Enzyme in Feed Protease is […]
Hydatid cyst disease caused by the cestode Echinococcus granulosus
Hydatid cyst disease, caused by infection with the neonatal stage of the cestode of the family Echinococcus granulosus, has a global distribution that is of great health and economic importance. Iran is also considered one of the hyperendemic areas of this disease. This disease causes significant health and economic losses in humans and domestic animals. […]
A review of infectious coryza in chickens
Infectious coryza is an acute respiratory disease of chickens characterized by nasal discharge, sneezing, and facial swelling below the eyes. It is a disease that occurs worldwide and is limited to chickens. Reports of disease in quail and pheasants probably describe a similar disease caused by a different agent. It is caused by the gram-negative […]
How Enzyme Stability Impacts Efficacy
There are many factors that affect the effectiveness and results of enzyme feed additives. The most important of these is enzyme stability, which means that enzymes must maintain their activity levels throughout the processing and digestion of animal feed. Inherent stability properties are encoded by the molecular structure and by the amino acid sequence that […]
