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  • broilers

Regarding the remarkable role of bursa of Fabricius as a primary lymphoid organ in poultry, thisstudy aimed to evaluate the effect of long term administration of Zataria multiflora as an herbalimmunomodulatory agent on histological features of this organ in broiler chickens. To this end,fifty, one-day old chickens were randomly divided into five equal groups and fed with dietscontained 0.5, 1, ...

SUBJECT: bursa of fabricius; animal culture; sf600-1100; bursa of fabricius; histology; zataria multiflora; broilers; sf1-1100

This study was carried out during summer season on two broiler buildings with a capacity of10000 each one. The first building with natural ventilation while the second was recentlyrenovated with dynamic ventilation system composed of 10 ventilators with a capacity of 5000m3/hour/unit. The results of this experiment showed that ammonia concentration was higher in thebuilding with natural ventil ...

SUBJECT: animal culture; sf600-1100; production performances; ventilation; health

150 day old Vencobb broiler chicks were randomly allocated to 5 treatment groups with 3 replicates of 10 chicks in each to determine the effect of mannan oligosaccharide (MOS) and Saccharomyces cerevisiae in gut morphology of broilers. The trial lasted for 6 weeks. For microscopic examination the representative samples of each segment of intestine were collected and fixed in the 10% buffered f ...

SUBJECT: animal culture; sf600-1100; mannan oligosaccharide; gut; sf1-1100

Chicken demand and supply has increased in many developing countries in the last few decades. Peru is one of those countries. When we analyze the increase in Peru since the 1990s, compared with the case of Japan between the 1960s and 1980s in which demand and supply also increased, we find common factors such as the development of intensive agriculture that depends on imported feed grains. How ...

SUBJECT: animal culture; sf600-1100; integration; relative prices; sf1-1100

The aim of the study was to evaluate the effects of dietary supplementation with some antioxidants(vitamins & minerals) against the deleterious impacts of heat stress on broilers. One hundred andtwenty eight broiler chicks were randomly assigned into 4 dietary groups with 4 replicates (8chicks each). The chicks were raised for 6 weeks under natural summer months (36 °C and 75%RH) during which ...

SUBJECT: animal culture; sf600-1100; vitamin e; vitamin c; heat stress