Feed and water deprivation has a negative but transient effect on the rumen kinetics of Bos indicus steers

Leo-Penu, C.L.O., Picard, J., Fitzpatrick, L.A., and Parker, A.J. (2018) Feed and water deprivation has a negative but transient effect on the rumen kinetics of Bos indicus steers. Journal of Animal Physiology and Animal Nutrition, 102 (3). pp. 670-678.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: https://doi.org/10.1111/jpn.12877


Abstract

The effects on rumen kinetics after feed and water had been deprived for 72 hr were studied using four fistulated Bos indicus steers. The animals were assigned in a 2x4 crossover design with two treatments: feed and water ad libitum (control) and no feed and water for 72 hr (deprived) with four steers per treatment over two time periods. Feed and water deprivation caused decreases in the numbers of cellulolytic bacteria (1.4 vs. 0.4 cfu x 10(6)/ml; p=.001), live (23.7 vs. 0.8 x 10(9)/ml; p=.001), dead (12.7 vs. 0.5 x 10(9)/ml; p=.001) and total bacterial counts (36.4 vs. 1.4 x 10(9)/ml; p=.001) at day 0, compared with the control treatment. However, the deprived group had greater numbers of cellulolytic bacteria (2.7 vs. 50.1 cfu x 10(6)/ml; p=.001), live (18.3 vs. 42.2 x 10(9)/ml; p=.001), dead (6. 5 vs. 19.1 x 10(9)/ml; p=.001) and total bacterial counts (24.8 vs. 61.3 x 10(9)/ml; p=.001) from rumen fluid on day 4, compared with the control treatment. The numbers of protozoa in rumen fluid from the deprived group were less than (551.2 vs. 2.4 x 10(3)/ml; p=.001) the control group on day 0. However, the deprived treatment had fewer protozoa in rumen fluid than the control treatment on day 4 (p=.001) and day 9 (p=.001). Volatile fatty acids and in vitro gas production as functional measurements of rumen fluid followed the same trend as the bacterial and protozoa populations. These results indicate that feed and water deprivation would have a negative but transient effect on the rumen kinetics of Bos indicus steers.

Item ID: 54422
Item Type: Article (Research - C1)
ISSN: 1439-0396
Keywords: bacteria, cattle, gas, protozoa, rumen, short-chain fatty acids
Copyright Information: © 2018 Blackwell Verlag GmbH.
Funders: James Cook University (JCU), Australian Centre for International Agricultural Research (ACIAR)
Date Deposited: 04 Jul 2018 07:40
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070204 Animal Nutrition @ 50%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070203 Animal Management @ 50%
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page