The Influence of the Ration and Rumen Inoculation on the Establishment of Certain Microorganisms in the Rumens of Young Calves

Programming rumen bacterial communities in newborn Merino lambs

“…These findings are consistent with the idea that the inoculation of the rumen can improve or accelerate the complexity of microbial ecology (Pounden and Hibbs, 1948;Fonty et al, 1983;Krause et al, 2003;Bomba et al, 2005). Pounden and Hibbs (1948) inoculated calves from days 5 to 20 (every 5 days) with fresh cuds from cows. They found that the establishment of protozoa was favored by the inoculation, while part of the characteristic microflora associated with hay intake was also assisted by the inoculations with rumen contents from adult cows.…”

“…The rumen microbiome established early in ruminant life however, may change over time (Li et al, 2012;Jami et al, 2013) and can be affected by early-life microbial intervention (Yañez-Ruiz et al, 2010;Leahy et al, 2013;Abecia et al, 2014b). Based on previous research, inoculation of the rumen with complex microflora and the inclusion of non-protected fat in the diet of newborn lambs would be considered effective mechanisms to modify the rumen microbiome (Pounden and Hibbs, 1948;Machmüller, 2006;Patra, 2014;Zhong et al, 2014).…”

The Development of Rumen Microbial Populations in Lambs and Calves Under Various Conditions of Management

“…Considerable interest has been shown in the development of rumen microbial populations in calves kept on different rations and under varying conditions of management (Pounden & Hibbs, 1948a, b, 1949, 1950 Bryant, Small, Bouma & Robinson, 1958;Bryant & Small, 1960). The value of artificial inoculations of rumen contents in early weaning has been studied, as for example by Preston (1958), but the low rumen pH proved to be a limiting factor in the establishment…”

The influence of ration preparation and level of concentrate upon rumen protozoa and volatile fatty acid production in sheep

“…In a somewhat different approach, Pounden and Hibbs (1948a) Diets containing varying levels of starch and protein or different sources of protein have been shown to influence the microbial population in the rumen, Mowry and Becker (1930) found that protozoal numbers were markedly increased by the addition of starch and protein to the ration. However, the effect was most pronounced when protein concentrates or casein were included in starch-containing rations.…”