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Communication Dans Un Congrès Année : 2015

Precision feeding based on individual daily body weight of group-housed pigs with an automatic feeder developed to allow for restricting feed allowance

Résumé

A feeder prototype has been developed by IFIP and an equipment manufacturer to perform precision feeding for 96 group-housed growing pigs each equipped with a RFID ear tag. A sorting station, placed on force sensors, allows for weighing pigs individually and orienting them towards (i) five automatic feeders (AF), as long as daily feed allowance is not reached, (ii) a pen for specific care, or (iii) the life area otherwise. Each AF can deliver (min. 30 g) and mix two diets, and is connected to a computer that calculates the daily dietary allowance per pig, based on time (initial BW × 0.04 +27 g/d up to 2.4 (gilts) or 2.7 (barrows) kg/d), body weight (BW) and feeding strategy. A trial was performed to assess the proper functioning of the system and to compare two feeding strategies (2- vs 9-phase strategy, called 2P and 9P) with different amino acid supplies depending on the BW range. Four pigs did not adapt to the system after 7 days. Seven pigs were removed because of accidents or health issues. Eleven pigs did not consume their feed allowance on more than 4 non successive days. During the first week, it was due to the high occupation rate of AF. Growth performances of 74 other pigs were characterized. Average daily gain (2P: 787, 9P: 774 g/d), feed conversion ratio (2P: 2.70, 9P: 2.74) and carcass leanness (2P: 65.2, 9P: 65.1% muscle) were similar for both strategies (P > 0.22), but cumulated N intake was reduced with the strategy 9P (4.55 vs. 4.65 kg/pig, P = 0.05).

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Domaines

Autre [q-bio.OT]
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Dates et versions

hal-01211066 , version 1 (02-10-2015)

Identifiants

  • HAL Id : hal-01211066 , version 1
  • PRODINRA : 325433

Citer

Michel Marcon, Ludovic Brossard, Nathalie Quiniou. Precision feeding based on individual daily body weight of group-housed pigs with an automatic feeder developed to allow for restricting feed allowance. 7. European Conference on Precision Livestock Farming, EU-PLF. INT., Sep 2015, Milan, Italy. 866 p. ⟨hal-01211066⟩
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