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Comparaison de l'évolution de 2 litières biomaîtrisées à base de sciure ou de paille pour porcs à l'engraissement
Marlier, Didier; Nicks, Baudouin; Canart, Bernard et al.
1994In Annales de Médecine Vétérinaire, 138 (1), p. 45-53
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Abstract :
[en] Two rooms of a pig house were used to study 2 deep litter systems where the animals were kept on a 50 cm thick layer of sawdust or of chopped straw (10 cm). Seven days before the arrival of the animals, slurry and a microbial product used to stimulate the fermentation were added to the litters. Fifteen pigs on sawdust and seventien pigs on straw (floor spaces : 1.4 and 1.2 M2/pig) were fattened from 23.1 to 93.1 kg live weight. Excreta from pigs was dung into the bedding weekly and treated with the microbial product. This labour was considered as too hard in the straw room and was ended at day 105. No sawdust was added during the fattening period but straw was added 5 times to keep the pigs clean and to keep the temperature in the bedding higher than 30-degrees-C. The mean temperature in the sawdust bed was higher (38 +/- 5,4-degrees-C vs 35 +/- 6,7-degrees-C, p > 0,001) and more constant (mean daily variation 1,3 +/- 1,6 vs 2,2 +/- 2,4-degrees-C, p > 0,001) than the temperature recorded in the straw bed. The air temperature and the relative humidity were similar in the 2 rooms (21-degrees-C and 60 The concentrations of ammonia in the air were measured with Gastec tubes. The average ammonia concentrations recorded during the 7 days before the arrival of the animals (48 +/- 36 ppm vs 12 +/- 9,2 ppm) and those recorded after the eighth day (11 +/- 5,6 ppm vs 6,7 +/- 3,9 ppm) were significantly higher with the straw system compared with the sawdust system. The daily gains were not significantly different in the 2 rooms (552 g on average) and the food conversion ratios in the 2 rooms were 3,6 kg/kg (on sawdust) and 3,85 kg/kg (on straw). Carcasses were of equal quality. In conclusion, results were better with the sawdust bed than with the straw bed. The sawdust bed provided a higher temperature in the bedding and a lower ammonia concentration in the air. The routine weekly task of digging was easier in the sawdust bed and the bedding was used for a second batch.
Disciplines :
Animal production & animal husbandry
Author, co-author :
Marlier, Didier  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Médecine des oiseaux, des lagomorphes et des rongeurs
Nicks, Baudouin ;  Université de Liège - ULiège > Département de productions animales > Ecologie et éthologie vétérinaires
Canart, Bernard
Sheri, R.
Language :
French
Title :
Comparaison de l'évolution de 2 litières biomaîtrisées à base de sciure ou de paille pour porcs à l'engraissement
Alternative titles :
[en] Comparison of the evolution of the bedding of 2 deep litter systems, deep sawdust and deep straw, for fattening pigs
Publication date :
1994
Journal title :
Annales de Médecine Vétérinaire
ISSN :
0003-4118
eISSN :
1781-3875
Publisher :
ULg - Université de Liège, Liège, Belgium
Volume :
138
Issue :
1
Pages :
45-53
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 November 2009

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