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The performance of weaned piglets after a five week weaning period in relation to the weaning weight, the feed composition and the use of an effective ergotropic

The performance of weaned piglets after a five week weaning period in relation to the weaning weight, the feed composition and the use of an effective ergotropic

Archiv für Tierernahrung 38(10): 861-877

In a three-factorial experiment with 216 piglets of the same age (33 +/- 4 days) but a different weight (weaning weight from 5.5 to 9 kg) a conventional piglet rearing feed containing 20% crude protein (standard), a high-energy diet and a low-protein diet (16% crude protein) were tested. In three weaning weight classes the three diets were fed without or with Bisergon [2-N-(2-hydroxyethyl)-carbamoyl-3-methylquinoxaline-1.4-dioxide] over a period of 21 days. From the 22nd to the 71st day after weaning all the piglets received the standard diet without ergotropic. Among the factors studied the Bisergon supplement had the biggest effect. The additional weight gain varied from 9% in case of heavy piglets fed the high energy diet to 150% in case of light piglets fed the low protein diet. The ergotropic improved feed conversion by 22% and lowered the frequency of gastrointestinal diseases requiring treatment by 28%. At the end of the rearing period the weight of the piglets initially fed with Bisergon (means = 34.6 kg) was significantly higher than that of the control animals (means = 31.6 kg). The weaning weight and the diets influenced the final weight especially in the groups without ergotropic. In this case the piglets fed with the high-energy diet gained 30% more and those fed with the low-protein diet 40% less compared with the standard group. The average live weight gain of the light piglets (weaning weight 6.1 kg) was 30% lower than that of the heavier piglets (weaning weight 8.5 kg). The frequency of treatment against diarrhoea of the heavy piglets was by one third lower than that of the light animals. The piglets fed with the low-protein diet appeared to show a limitation of gastrointestinal diseases, but these animals also had the lowest feed intake. Independent of the Bisergon supplementation the weaning weight clearly influenced the live weight after the 10-week experiment. The initially better development of the animals started with the high-energy diet was compensated. In contrast to this, the piglets weighing 6.1 and 7.2 kg fed with the low-protein diet could not compensate the retarded development in comparison with the piglets fed with the standard or the high-energy diet. This experiment confirms the enormous improvement of the performance and of the health status of weaned piglets caused by the ergotropic Bisergon.(ABSTRACT TRUNCATED AT 400 WORDS)

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Accession: 041711565

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PMID: 3228353

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