chukar partridge raising is a profitable business. new feed additives of plant origin may be an alternative to antibiotic growth promoters. this study was carried out to determine the effect of different levels of pistacia atlantica oil on performance and pathological conditions in chukar partridge. one-day-old chukar partridge chicks were assigned to three dietary treatments of 40 birds each. ...

background: excessive use of antibiotic growth promoters leaded in the creation of antibiotic-resistant bacteria and by consuming animal products, humans are at risk of receiving their residual. therefore, instead of using antibiotics as growth promoters, some alternatives must be identified and introduced to animal breeders. objectives: the purpose of this research was to study the effect of a...

the aims of this study were the comparative study of probiotic, acidifier,antibiotic growth promoters and prebiotic on activity of humoral immune and performance parameters of broiler chickens.500 one day old male broilers (308 ross strain) were divided into 5 groups: a, b, c, d and e. each group with equal numbers of male included 4 replicates (25 chicks per replicate). group a was as control ...

Among the factors that have influenced livestock industrialization in 20th century, implications of substances promote fattening and animal growth (growth promoters) not been thoroughly addressed. Their role transformation Spanish farming is key question this article. A wide range these became available mid-twentieth century use peaked 1970s 1980s. We compared veterinary, livestock, specialized...

Sub-therapeutic levels of in-feed antibiotics remain the most widely used growth promoters in animal production. They are generally cost-effective and current Iicencing regulations appear to be adequate in ensuring efficacy and safety. Probiotics are also quite widely used and may have a niche when there is a particular need to avoid medicinal additives. However, there are doubts about the cons...