By John A. Patterson (auth.), Todd R. Callaway, Steven C. Ricke (eds.)

ISBN-10: 1461413109

ISBN-13: 9781461413103

The perform of supplementing direct fed microbial and prebiotic ingredients to family animals in the course of development is changing into extra frequent in foodstuff animal construction. important results rather in farm animals, pigs and chicken, together with better common well-being, foodborne pathogen relief, extra effective nutrients usage, swifter progress fee and elevated milk and egg construction are universal effects. The good fortune linked to direct fed microbial and prebiotic purposes in a number of species guarantees their persisted commercialization and the common use of such ingredients. despite the fact that, a number of primary questions stay approximately how and why probiotic items paintings, and which type of probiotic items are top for particular construction scenarios.

It seems that early institution and retention of an ecological stability within the gastrointestinal tract is a crucial first step for an exterior organic additive to be potent in younger animals. as a result, it truly is attainable that the effectiveness of direct fed microbials and prebiotics in a few animal species may perhaps basically be an oblique end result of dashing up the institution and succession of the dominant microflora attribute of the grownup gastrointestinal tract. therefore, an figuring out of the major tactics in the course of institution of microflora within the gastrointestinal method that result in the next fermentation features and ecological stability exhibited via the hugely protecting microflora is required. a number of extra components of destiny study instructions also are urged for extra improvement and implementation of those organic methods as new molecular and drug supply applied sciences turn into to be had. persevered learn on direct fed microbials and prebiotics generally may still markedly extend their advertisement purposes.

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Extra resources for Direct-Fed Microbials and Prebiotics for Animals: Science and Mechanisms of Action

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The bile present in the small intestine can disrupt cell membranes of bacteria, resulting in cell death (Gilliland et al. 1984). A study conducted by Gilliland et al. (1984) investigated the ability to establish intestinal growth in dairy calves by two strains of Lactobacillus acidophilus with differing levels of bile tolerance. The strain of L. acidophilus with the highest degree of bile tolerance had the most growth in the upper small intestines of calves. An increase in the colonization of direct-fed microbials in the upper intestine might be important for controlling the proliferation of intestinal pathogens as they enter the intestinal tract (Gilliland et al.

1983). It has been established that selective bacterial stimulation occurs, however, as increases in bifidobacteria and lactobacilli have been noted in several studies (Ito et al. 1990; Bouhnik et al. 1997; Moro et al. 2002). Therefore, although it is probable that GOS are not digested by mammalian enzymes and it has been proven that they lead to selective growth of beneficial bacteria, few data are available on their fermentation potential in the large bowel (Roberfroid 2007). Lactulose, like GOS, is produced from lactose (Fig.

Their group argued that it is not the host specificity that drives the adhesion properties but the individual strain’s adhesion ability. Other studies have produced similar findings, such as the ability of human-derived probiotic strains to adhere to fish mucus (Nikoskelainen et al. 2001). This may be true in some instances, but it must be remembered that these are in vitro assays and it is difficult to simulate the conditions of adhesion in vivo (Ouwehand and Salminen 2003). When using an in vitro test such as this for screening purposes, it is necessary to correlate the results with follow-up in vivo testing.

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Direct-Fed Microbials and Prebiotics for Animals: Science and Mechanisms of Action by John A. Patterson (auth.), Todd R. Callaway, Steven C. Ricke (eds.)


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