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Main page > Research and Trials > Swine > Private Research Centre, France, 2005
The effect of ProgutTM on the performance of piglets from 21 to 70 days of age. Private research center, France 2005.
Objective
The aim of the stufy was to evaluate the efficacy of ProgutTM on piglet post weaning performance from 21 days to 70 days of age under typical French husbandry conditions.
Materials and Methods
The following treatments were tested in the trial:
At the beginning of the trial 240 (Large White x Landrace) x P76 piglets were divided into treatments according to sex and initial weight. One treatment was replicated into 6 pens (8 Piglets per pen); 3 pens of light piglets (around 5 kg) and 3 pens of heavy piglets (around 7kg). The number of male and female piglets per treatment was identical. In order to place animals in a sanitary situation as close as possible to field sanitary conditions, pens and watering systems were not cleaned nor disinfected after the previous group. Only faeces and dirt were removed from the floor and drinkers and feeders by sweeping.
All feeds were offered ad libitum. Water was supplied continuously via drinkers (1 per pen) from day one until the end of the trial. The trial was divided into two feeding phases: weaner diets from 21 to 42 days of age and grower diets from 42 to 70 days days. The feed was provided in pellet form. The compositions of the feeds are presented in the table below. The negative control group received feed without antibiotics or feed additives (no enzyme, no acidifier and no probiotics). The other feeding treatments had the same basic formula than the control group, but contained the experimental premix of Avilamycine (positive control) or ProgutTM at different doses.
THE COMPOSITION OF THE TRIAL FEED
Piglets were weighed individually at 20, 28, 42 and 70 days of age. All amounts of feeds added to the feeders were weighed as well as remaining feeds in the feeders. Weight gain, feed intake and feed conversion ratio per treatment was calculated between 21 and 42, 42 and 70, 21 and 70 days of age. Health and mortality was recorded daily.
All zootechnical data was subjected to analysis of variance, using the UNIANOVA procedure in SPSS 11.0 statistical software. The treatment means were compared using appropriate means comparison procedures. The statistical model included treatment and weight class as fixed effects.
Results
Feed compositions were anylised in accordance with the expected values, except for the threonine content of the grower feed in ProgutTM 0.3/0.1 % group, which was a bit lower than expected. Mortality in the study was 0.8%
Period 21-42 days
During the first period of the trial significant differences were observed between the diets for growth performances. The highest growth performances were observed for the positive control diet and for diet H, which contained 0.3% ProgutTM. Feed conversion ratios didn't differ significantly between the treatments.
PERFORMANCE FROM 21 to 42 DAYS abc values with different superscripts differ statistically (P<0.05)
The figure below shows the correlation between performances and quantity of ProgutTM ingested per day. According to the weight gain equation the optimal dose of ProgutTM per piget per day was around 1g. This is close to an addition of 0,3% ProgutTM in the feed during this period (feed intake 300 g/day x 0.3% ProgutTM in the feed = 0.9g of ProgutTM/piglet/day.
THE CORRELATION BETWEEN PERFORMANCE AND QUANTITY OF PROGUTTM INJECTED PER DAY
Period 42-70 days
Both the growth and feed conversion ratio in treatment G (ProgutTM 0.2/0.1) and positive control were significntly better than in the negative control group. Also piglets in group H (ProgutTM 0.3/0,1%) performed numerically better than the negative control but the differences weren't statistically significant.
PERFORMANCE FROM 42-70 DAYS abc values with different superscripts differ statistically (P<0.05)
Period 21-70 days
During the whole trial period group G and positive control had significantly better growth and feed conversion than negative control. Also piglets in the H group performed numerically better than the negative control but the differences were not statistically significant.
PERFORMANCE FROM 21-70 DAYS abc values with different superscripts differ statistically (P<0.05)
The ProgutTM intake per day was calculated and the correlation between ProgutTM ingestion and performance was studied. The equations below enabled to calculate and optimum daily dose for growth and feed conversion ratio of 0.9-1g of Progut/day/piglet.
Conclusions
- During the total trial period from 21 to 70 days of age, ProgutTM, at two higher doses improved the piglet performance in comparison with the negative control group. - The improvement in performance was positively linked to the dose of ProgutTM ingested per day - The optimum dose of ProgutTM for the whole trial period was identified to be 0.9-1g of Progut/piglet/day - The optimum dose corresponds to 0.3% of ProgutTM from 21 to 42 days and 0.1% of ProgutTM from 42 to 70 days.
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