Probiotics for rabbits
There are naturally fewer studies with probiotics in rabbits than in other monogastric farm species.
Several studies exist nevertheless, which are limited to the assessment of the effect on growth, feed
conversion, reproduction and mortality; sometimes caecal activity and digestibility are studied too.
Table 2 synthetically describes a reasonable number of experimental trials with probiotics in growing
and fattening rabbits. The results of these trials were used to make the graphs depicted in Figure 1,
which show average daily gain (ADG), feed conversion ratio (FCR), and mortality, respectively. ADG
and FCR are expressed as a percentage of the controls; mortality as the absolute difference, in
percentage points, between a treatment and the corresponding control.
It is worthwhile noting that, while it is true that the differences were not statistically significant in
many trials, improvements in ADG were obtained in 15 out of 20 trials. It can be added that in one of
the only two negative result trials, the diet was deficient in fibre (only 10% of ADF). The same can,
by and large, be said about FCR. Mortality was also reduced in a great part of the trials where it was
measured (7 positive, 6 null, and 3 negative results).
The number of trials where reproduction results were studied is smaller. The results are summarized
in Table 3 and suggest that the main effect can be an increase in litter weight at weaning; but the
differences were not always statistically significant.
Probiotics for rabbitsThere are naturally fewer studies with probiotics in rabbits than in other monogastric farm species.Several studies exist nevertheless, which are limited to the assessment of the effect on growth, feedconversion, reproduction and mortality; sometimes caecal activity and digestibility are studied too.Table 2 synthetically describes a reasonable number of experimental trials with probiotics in growingand fattening rabbits. The results of these trials were used to make the graphs depicted in Figure 1,which show average daily gain (ADG), feed conversion ratio (FCR), and mortality, respectively. ADGand FCR are expressed as a percentage of the controls; mortality as the absolute difference, inpercentage points, between a treatment and the corresponding control.It is worthwhile noting that, while it is true that the differences were not statistically significant inmany trials, improvements in ADG were obtained in 15 out of 20 trials. It can be added that in one ofthe only two negative result trials, the diet was deficient in fibre (only 10% of ADF). The same can,by and large, be said about FCR. Mortality was also reduced in a great part of the trials where it wasmeasured (7 positive, 6 null, and 3 negative results).The number of trials where reproduction results were studied is smaller. The results are summarizedin Table 3 and suggest that the main effect can be an increase in litter weight at weaning; but thedifferences were not always statistically significant.
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