The nutritional manipulations of the rumen microbiome to enhance productivity and health are rather limited by the resilience of the ecosystem once established in the mature rumen. Based on recent studies, it has been suggested that the microbial colonization that occurs soon after birth opens a possibility of manipulation with potential to produce lasting effects into adult life. This paper pr...

Thirty calves were randomly assigned to two treatments and fed until weaning [42 days (d) of age]. Treatments were a control group (n = 15), which did not receive Megasphaera elsdenii (Me0) and a M. elsdenii group, which received a 50-ml oral dose of M. elsdenii NCIMB 41125 (10(8) CFU/ml) at day 14 day of age (Me14). Calves were given colostrum for the first 3 day followed by limited whole milk...

Rumen epithelial Na(+)/H(+) exchanger (NHE) catalyzes the exchange of extracellular Na(+) for intracellular H(+). Thus, it is of importance in the maintenance of Na and pH homeostasis of rumen epithelial cells. We have tested the hypothesis that an increase in energy and protein intake induces alterations of NHE isoform 1, 2, and 3 (NHE1, NHE1, and NHE3, respectively) mRNA abundance in the rume...

Abstract This study was conducted in the fields of breeding and improving sheep goats at Al-Dabouni research station district, Wasit Governorate affiliated to General Authority for Agricultural Research / Ministry Agriculture, from 8/2/2022 7/6/2022. A total 24 male Awassi lambs, aged between 4-5 months, were used (4 Al-Mahatta lambs 20 purchased a breeder Jassan district), average starting wei...

Absorption of the lower fatty acids occurs directly from the rumen of sheep, in which organ they are produced as a result of bacterial fermentation. Previous work on this subject, in which the pH of the rumen was not controlled (Barcroft, McAnally & Phillipson, 1944), showed that: (a) The quantity of acid absorbed is substantial. (b) The rate of absorption from the normally filled rumen bears n...