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Abstract
Enterotoxaemia is a low morbidity/ high mortality disease of calves caused by C. perfringens. The objective of the present study was to determine the repeatability of faecal clostridial counts in calves and whether faecal clostridial counts (FCC) are influenced by the diet and vary over the day. The coefficient of variation (CV) of FCC was calculated at three levels, namely calf, faecal sample and culture (= technical repeat). The effect of four different diets on FCC was evaluated, namely hay at libitum (= group 1), intensive feeding of concentrates, corn silage and hay (= group 2), all liquid diet of milk replacer (= group 3) and a diet of milk replacer supplemented with roughage (=group 4). CV’s were 74,6±72,5, 135,0±57,0 and 142,9±102,3 at calf, faecal sample and culture level respectively, indicating a very poor repeatability. Mean±SD FCC were 49±82 cfu/g faeces, 246±297 cfu/g faeces, 505±1059 cfu/g faeces and 56±119 cfu/g faeces in group 1 to 4 respectively. Calves fed hay ad libitum and milk replacer supplemented with roughage (group 4) showed significantly lower FCC than calves fed concentrates ad libitum (group 2) and calves fed only milk replacer (group 3). This study evidenced a dietary influence on clostridial excretion in calves, opening perspectives for the dietary management of enterotoxaemia. FCC have a very poor repeatability. Repeatedly plating the same sample may help overcome this problem.

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Chicago
Valgaeren, Bonnie, Heleen Hanssens, Sophie Roelandt, Evy Goossens, Stefanie Verherstraeten, Linde Gille, Laura Van Driessche, et al. 2015. “Repeatability of Faecal Clostridial Counts in Calves and Dietary Influence.” In Proceedings of the XV. Middle European Buiatric Congress ; 10th Symposium of the ECBHM ; 25th Conference of the Slovanian Buiatric Association. Slovenian Buiatric Assocation ; European College of Bovine Health Management (ECBHM).
APA
Valgaeren, B., Hanssens, H., Roelandt, S., Goossens, E., Verherstraeten, S., Gille, L., Van Driessche, L., et al. (2015). Repeatability of faecal clostridial counts in calves and dietary influence. Proceedings of the XV. Middle European Buiatric congress ; 10th symposium of the ECBHM ; 25th conference of the Slovanian Buiatric Association. Presented at the 25th Middle European Buiatric congress ; 10th Symposium of the ECBHM ; 25th Conference of the Slovanian Buiatric Association, Slovenian Buiatric Assocation ; European College of Bovine Health Management (ECBHM).
Vancouver
1.
Valgaeren B, Hanssens H, Roelandt S, Goossens E, Verherstraeten S, Gille L, et al. Repeatability of faecal clostridial counts in calves and dietary influence. Proceedings of the XV. Middle European Buiatric congress ; 10th symposium of the ECBHM ; 25th conference of the Slovanian Buiatric Association. Slovenian Buiatric Assocation ; European College of Bovine Health Management (ECBHM); 2015.
MLA
Valgaeren, Bonnie, Heleen Hanssens, Sophie Roelandt, et al. “Repeatability of Faecal Clostridial Counts in Calves and Dietary Influence.” Proceedings of the XV. Middle European Buiatric Congress ; 10th Symposium of the ECBHM ; 25th Conference of the Slovanian Buiatric Association. Slovenian Buiatric Assocation ; European College of Bovine Health Management (ECBHM), 2015. Print.
@inproceedings{6735885,
  abstract     = {Enterotoxaemia is a low morbidity/ high mortality disease of calves caused by C. perfringens. The objective of the present study was to determine the repeatability of faecal clostridial counts in calves and whether faecal clostridial counts (FCC) are influenced by the diet and vary over the day. The coefficient of variation (CV) of FCC was calculated at three levels, namely calf, faecal sample and culture (= technical repeat). The effect of four different diets on FCC was evaluated, namely hay at libitum (= group 1), intensive feeding of concentrates, corn silage and hay (= group 2), all liquid diet of milk replacer (= group 3) and a diet of milk replacer supplemented with roughage (=group 4). 
CV{\textquoteright}s were 74,6{\textpm}72,5, 135,0{\textpm}57,0 and 142,9{\textpm}102,3 at calf, faecal sample and culture level respectively, indicating a very poor repeatability. Mean{\textpm}SD FCC were 49{\textpm}82 cfu/g faeces, 246{\textpm}297 cfu/g faeces, 505{\textpm}1059 cfu/g faeces and 56{\textpm}119 cfu/g faeces in group 1 to 4 respectively. Calves fed hay ad libitum and milk replacer supplemented with  roughage (group 4) showed significantly lower FCC than calves fed concentrates ad libitum (group 2) and calves fed only milk replacer (group 3). 
This study evidenced a dietary influence on clostridial excretion in calves, opening perspectives for the dietary management of enterotoxaemia. FCC have a very poor repeatability. Repeatedly plating the same sample may help overcome this problem.},
  author       = {Valgaeren, Bonnie and Hanssens, Heleen and Roelandt, Sophie and Goossens, Evy and Verherstraeten, Stefanie and Gille, Linde and Van Driessche, Laura and Haesebrouck, Freddy and Ducatelle, Richard and Van Immerseel, Filip and Deprez, Piet and Pardon, Bart},
  booktitle    = {Proceedings of the XV. Middle European Buiatric congress ; 10th symposium of the ECBHM ; 25th conference of the Slovanian Buiatric Association},
  language     = {eng},
  location     = {Maribor, Slovenia},
  publisher    = {Slovenian Buiatric Assocation ; European College of Bovine Health Management (ECBHM)},
  title        = {Repeatability of faecal clostridial counts in calves and dietary influence},
  year         = {2015},
}