diff --git a/frontend/pages/bovine/[id].vue b/frontend/pages/bovine/[id].vue
index 941c3b6..79f61ff 100644
--- a/frontend/pages/bovine/[id].vue
+++ b/frontend/pages/bovine/[id].vue
@@ -194,7 +194,6 @@ interface BovineMovementData {
     enteredAt: string
     leftAt: string | null
     buildingCase: BuildingCaseRef | null
-    building: BuildingRef | null
 }
 
 interface BovinePassportData {
@@ -301,7 +300,7 @@ const movementRows = computed(() => {
     const list = bovine.value?.movements ?? []
     return list.map(m => ({
         id: m.id,
-        building: m.buildingCase?.building?.label ?? m.building?.label ?? '—',
+        building: m.buildingCase?.building?.label ?? '—',
         case: m.buildingCase?.caseNumber != null ? `Case ${m.buildingCase.caseNumber}` : '—',
         enteredAt: formatDate(m.enteredAt),
         leftAt: m.leftAt ? formatDate(m.leftAt) : null,
diff --git a/frontend/pages/inventory.vue b/frontend/pages/inventory.vue
index e3faa7b..779801d 100644
--- a/frontend/pages/inventory.vue
+++ b/frontend/pages/inventory.vue
@@ -125,7 +125,7 @@
                     {{ formatDate(item.arrivalDate) }}
                 </template>
                 <template #cell-buildingCase.building.label="{ item }">
-                    {{ item.effectiveBuilding?.label ?? '—' }}
+                    {{ item.buildingCase?.building?.label ?? '—' }}
                 </template>
                 <template #cell-buildingCase.caseNumber="{ item }">
                     {{ item.buildingCase?.caseNumber ?? '—' }}
diff --git a/frontend/services/bovine.ts b/frontend/services/bovine.ts
index 7a13a8b..1a1466c 100644
--- a/frontend/services/bovine.ts
+++ b/frontend/services/bovine.ts
@@ -9,34 +9,3 @@ export async function createBovine(payload: BovinePayload) {
         toastSuccessKey: 'success.bovine.create'
     })
 }
-
-export async function createBovines(nationalNumbers: string[]): Promise<{ created: BovineData[]; errors: string[] }> {
-    const created: BovineData[] = []
-    const errors: string[] = []
-
-    for (const nationalNumber of nationalNumbers) {
-        try {
-            const bovine = await createBovine({ nationalNumber })
-            if (bovine) {
-                created.push(bovine)
-            }
-        } catch {
-            errors.push(nationalNumber)
-        }
-    }
-
-    return { created, errors }
-}
-
-export async function getBovine(id: number) {
-    const api = useApi()
-    return api.get<BovineData>(`bovines/${id}`)
-}
-
-export async function updateBovine(id: number, payload: BovinePayload) {
-    const api = useApi()
-    return api.patch<BovineData>(`bovines/${id}`, payload, {
-        toastErrorKey: 'errors.bovine.update',
-        toastSuccessKey: 'success.bovine.update'
-    })
-}
diff --git a/frontend/services/dto/bovine-data.ts b/frontend/services/dto/bovine-data.ts
index 96ef87c..ae6d21d 100644
--- a/frontend/services/dto/bovine-data.ts
+++ b/frontend/services/dto/bovine-data.ts
@@ -16,8 +16,6 @@ export interface BovineData {
     arrivalDate: string | null
     exitDate: string | null
     buildingCase: BovineBuildingCaseRef | null
-    building: BovineBuildingRef | null
-    effectiveBuilding: BovineBuildingRef | null
     supplier: string | null
     workNumber: string | null
     birthDate: string | null
@@ -29,9 +27,5 @@ export interface BovineData {
 
 export type BovinePayload = {
     nationalNumber?: string
-    receivedWeight?: number | null
-    pricePerKg?: number | null
-    arrivalDate?: string | null
     buildingCase?: string | null
-    supplier?: string | null
 }
diff --git a/src/Command/BackfillBovineMovementsCommand.php b/src/Command/BackfillBovineMovementsCommand.php
deleted file mode 100644
index 3f85759..0000000
--- a/src/Command/BackfillBovineMovementsCommand.php
+++ /dev/null
@@ -1,93 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace App\Command;
-
-use App\Entity\Bovine;
-use App\Entity\BovineMovement;
-use DateTimeImmutable;
-use Doctrine\ORM\EntityManagerInterface;
-use Symfony\Component\Console\Attribute\AsCommand;
-use Symfony\Component\Console\Command\Command;
-use Symfony\Component\Console\Input\InputInterface;
-use Symfony\Component\Console\Output\OutputInterface;
-use Symfony\Component\Console\Style\SymfonyStyle;
-
-use function count;
-
-#[AsCommand(
-    name: 'app:backfill-bovine-movements',
-    description: 'Crée un mouvement initial pour chaque bovin ayant une case ou un bâtiment mais aucun mouvement enregistré.'
-)]
-class BackfillBovineMovementsCommand extends Command
-{
-    private const FLUSH_EVERY = 100;
-
-    public function __construct(
-        private readonly EntityManagerInterface $entityManager,
-    ) {
-        parent::__construct();
-    }
-
-    protected function execute(InputInterface $input, OutputInterface $output): int
-    {
-        $io = new SymfonyStyle($input, $output);
-
-        $bovines = $this->entityManager->createQueryBuilder()
-            ->select('b')
-            ->from(Bovine::class, 'b')
-            ->where('b.buildingCase IS NOT NULL OR b.building IS NOT NULL')
-            ->andWhere('NOT EXISTS (SELECT 1 FROM '.BovineMovement::class.' m WHERE m.bovine = b)')
-            ->getQuery()
-            ->getResult()
-        ;
-
-        $total = count($bovines);
-        if (0 === $total) {
-            $io->success('Aucun bovin à backfiller.');
-
-            return Command::SUCCESS;
-        }
-
-        $io->info(sprintf('%d bovin(s) à backfiller.', $total));
-
-        $now      = new DateTimeImmutable();
-        $created  = 0;
-        $fallback = 0;
-
-        foreach ($bovines as $i => $bovine) {
-            $movement = new BovineMovement();
-            $movement->setBovine($bovine);
-
-            if (null !== $bovine->getBuildingCase()) {
-                $movement->setBuildingCase($bovine->getBuildingCase());
-            } else {
-                $movement->setBuilding($bovine->getBuilding());
-            }
-
-            $enteredAt = $bovine->getArrivalDate();
-            if (null === $enteredAt) {
-                $enteredAt = $now;
-                ++$fallback;
-            }
-            $movement->setEnteredAt($enteredAt);
-
-            $this->entityManager->persist($movement);
-            ++$created;
-
-            if (0 === ($i + 1) % self::FLUSH_EVERY) {
-                $this->entityManager->flush();
-            }
-        }
-
-        $this->entityManager->flush();
-
-        $io->success(sprintf('%d mouvement(s) créé(s).', $created));
-        if ($fallback > 0) {
-            $io->warning(sprintf("%d bovin(s) sans date d'arrivée → enteredAt = maintenant.", $fallback));
-        }
-
-        return Command::SUCCESS;
-    }
-}
diff --git a/src/Command/FeedBovinePricesCommand.php b/src/Command/FeedBovinePricesCommand.php
deleted file mode 100644
index 729413a..0000000
--- a/src/Command/FeedBovinePricesCommand.php
+++ /dev/null
@@ -1,215 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace App\Command;
-
-use App\Entity\Bovine;
-use App\Entity\Building;
-use App\Entity\Supplier;
-use Doctrine\ORM\EntityManagerInterface;
-use PhpOffice\PhpSpreadsheet\IOFactory;
-use Symfony\Component\Console\Attribute\AsCommand;
-use Symfony\Component\Console\Command\Command;
-use Symfony\Component\Console\Input\InputArgument;
-use Symfony\Component\Console\Input\InputInterface;
-use Symfony\Component\Console\Input\InputOption;
-use Symfony\Component\Console\Output\OutputInterface;
-use Symfony\Component\Console\Style\SymfonyStyle;
-use Throwable;
-
-#[AsCommand(
-    name: 'app:feed-bovine-prices',
-    description: 'Met à jour le poids, le prix au kilo et le fournisseur des bovins existants depuis un fichier XLSX.'
-)]
-final class FeedBovinePricesCommand extends Command
-{
-    public function __construct(
-        private EntityManagerInterface $em,
-    ) {
-        parent::__construct();
-    }
-
-    protected function configure(): void
-    {
-        $this
-            ->addArgument('file', InputArgument::REQUIRED, 'Chemin absolu vers le fichier XLSX')
-            ->addOption('dry-run', null, InputOption::VALUE_NONE, 'Simule sans persister en BDD')
-        ;
-    }
-
-    protected function execute(InputInterface $input, OutputInterface $output): int
-    {
-        $io     = new SymfonyStyle($input, $output);
-        $file   = (string) $input->getArgument('file');
-        $dryRun = (bool) $input->getOption('dry-run');
-
-        if (!file_exists($file)) {
-            $io->error(sprintf('Fichier introuvable : %s', $file));
-
-            return Command::FAILURE;
-        }
-
-        $io->title('Feed bovins depuis '.basename($file));
-        if ($dryRun) {
-            $io->warning('Dry-run activé : aucune écriture en BDD.');
-        }
-
-        try {
-            $spreadsheet = IOFactory::load($file);
-        } catch (Throwable $e) {
-            $io->error('Impossible de lire le fichier : '.$e->getMessage());
-
-            return Command::FAILURE;
-        }
-
-        $sheet      = $spreadsheet->getActiveSheet();
-        $highestRow = $sheet->getHighestRow();
-
-        // Pré-chargement des fournisseurs pour des lookups rapides (insensible casse).
-        $supplierByName = [];
-        foreach ($this->em->getRepository(Supplier::class)->findAll() as $supplier) {
-            $supplierByName[mb_strtoupper($supplier->getName())] = $supplier;
-        }
-
-        // Pré-chargement des bâtiments par code (insensible casse).
-        $buildingByCode = [];
-        foreach ($this->em->getRepository(Building::class)->findAll() as $building) {
-            $buildingByCode[mb_strtoupper($building->getCode())] = $building;
-        }
-
-        $bovineRepo = $this->em->getRepository(Bovine::class);
-
-        $stats = [
-            'total'           => 0,
-            'updated'         => 0,
-            'notFound'        => 0,
-            'invalid'         => 0,
-            'supplierMissing' => 0,
-            'buildingMissing' => 0,
-        ];
-        $missingNationalNumbers = [];
-        $missingSuppliers       = [];
-        $missingBuildings       = [];
-
-        $io->progressStart($highestRow);
-        for ($row = 1; $row <= $highestRow; ++$row) {
-            ++$stats['total'];
-
-            $rawNationalNumber = (string) ($sheet->getCell([1, $row])->getValue() ?? '');
-            $rawSupplier       = (string) ($sheet->getCell([2, $row])->getValue() ?? '');
-            $rawWeight         = $sheet->getCell([3, $row])->getValue();
-            $rawPrice          = $sheet->getCell([4, $row])->getValue();
-            $rawBuilding       = (string) ($sheet->getCell([5, $row])->getValue() ?? '');
-
-            $rawNationalNumber = trim($rawNationalNumber);
-            if ('' === $rawNationalNumber) {
-                ++$stats['invalid'];
-                $io->progressAdvance();
-
-                continue;
-            }
-
-            // Garde : strip "FR" + espace optionnel uniquement s'il est présent.
-            $nationalNumber = preg_replace('/^FR\s*/i', '', $rawNationalNumber);
-
-            $bovine = $bovineRepo->findOneBy(['nationalNumber' => $nationalNumber]);
-            if (null === $bovine) {
-                ++$stats['notFound'];
-                $missingNationalNumbers[] = $nationalNumber;
-                $io->progressAdvance();
-
-                continue;
-            }
-
-            // Lookup supplier (peut être null si introuvable ou colonne vide).
-            $supplier     = null;
-            $supplierName = mb_strtoupper(trim($rawSupplier));
-            if ('' !== $supplierName) {
-                $supplier = $supplierByName[$supplierName] ?? null;
-                if (null === $supplier) {
-                    ++$stats['supplierMissing'];
-                    $missingSuppliers[$supplierName] = ($missingSuppliers[$supplierName] ?? 0) + 1;
-                }
-            }
-
-            $weight = is_numeric($rawWeight) ? (int) $rawWeight : null;
-            $price  = is_numeric($rawPrice) ? (float) $rawPrice : null;
-
-            if (null !== $weight) {
-                $bovine->setReceivedWeight($weight);
-            }
-            if (null !== $price) {
-                $bovine->setPricePerKg($price);
-            }
-            $bovine->setSupplier($supplier);
-
-            // Bâtiment direct : on n'écrase pas une affectation à une case existante.
-            $buildingCode = mb_strtoupper(trim($rawBuilding));
-            if ('' !== $buildingCode && null === $bovine->getBuildingCase()) {
-                $building = $buildingByCode[$buildingCode] ?? null;
-                if (null !== $building) {
-                    $bovine->setBuilding($building);
-                } else {
-                    ++$stats['buildingMissing'];
-                    $missingBuildings[$buildingCode] = ($missingBuildings[$buildingCode] ?? 0) + 1;
-                }
-            }
-
-            ++$stats['updated'];
-            $io->progressAdvance();
-        }
-        $io->progressFinish();
-
-        if (!$dryRun) {
-            $this->em->flush();
-        }
-
-        $io->section('Résultats');
-        $io->table(
-            ['Métrique', 'Valeur'],
-            [
-                ['Lignes totales', $stats['total']],
-                ['Bovins mis à jour', $stats['updated']],
-                ['Bovins introuvables', $stats['notFound']],
-                ['Lignes invalides', $stats['invalid']],
-                ['Fournisseurs introuvables (supplier=null)', $stats['supplierMissing']],
-                ['Bâtiments introuvables (building non set)', $stats['buildingMissing']],
-            ]
-        );
-
-        if ([] !== $missingNationalNumbers) {
-            $preview = array_slice($missingNationalNumbers, 0, 10);
-            $io->warning(sprintf(
-                '%d bovin(s) introuvable(s). Aperçu : %s%s',
-                count($missingNationalNumbers),
-                implode(', ', $preview),
-                count($missingNationalNumbers) > 10 ? '…' : '',
-            ));
-        }
-
-        if ([] !== $missingSuppliers) {
-            $list = [];
-            foreach ($missingSuppliers as $name => $count) {
-                $list[] = sprintf('%s (%d)', $name, $count);
-            }
-            $io->warning('Fournisseurs introuvables (bovins rattachés en null) : '.implode(', ', $list));
-        }
-
-        if ([] !== $missingBuildings) {
-            $list = [];
-            foreach ($missingBuildings as $code => $count) {
-                $list[] = sprintf('%s (%d)', $code, $count);
-            }
-            $io->warning('Bâtiments introuvables (champ non renseigné) : '.implode(', ', $list));
-        }
-
-        if ($dryRun) {
-            $io->success('Dry-run terminé. Relance sans --dry-run pour persister.');
-        } else {
-            $io->success('Feed terminé avec succès.');
-        }
-
-        return Command::SUCCESS;
-    }
-}
diff --git a/src/Entity/Bovine.php b/src/Entity/Bovine.php
index bb464ea..c9a4c32 100644
--- a/src/Entity/Bovine.php
+++ b/src/Entity/Bovine.php
@@ -96,11 +96,6 @@ class Bovine
     #[ApiProperty(readableLink: true)]
     private ?BuildingCase $buildingCase = null;
 
-    #[ORM\ManyToOne]
-    #[Groups(['bovine:read'])]
-    #[ApiProperty(readableLink: true)]
-    private ?Building $building = null;
-
     #[ORM\ManyToOne]
     #[Groups(['bovine:read', 'bovine:write', 'building_case:read'])]
     private ?Supplier $supplier = null;
@@ -244,28 +239,6 @@ class Bovine
         return $this;
     }
 
-    public function getBuilding(): ?Building
-    {
-        return $this->building;
-    }
-
-    public function setBuilding(?Building $building): static
-    {
-        $this->building = $building;
-
-        return $this;
-    }
-
-    /**
-     * Bâtiment effectif d'un bovin : la case affectée si elle existe (logique
-     * historique), sinon le bâtiment direct (fed depuis l'XLSX initial).
-     */
-    #[Groups(['bovine:read', 'building_case:read'])]
-    public function getEffectiveBuilding(): ?Building
-    {
-        return $this->buildingCase?->getIdBuilding() ?? $this->building;
-    }
-
     public function getSupplier(): ?Supplier
     {
         return $this->supplier;
diff --git a/src/Entity/BovineMovement.php b/src/Entity/BovineMovement.php
index 918526b..986b941 100644
--- a/src/Entity/BovineMovement.php
+++ b/src/Entity/BovineMovement.php
@@ -44,11 +44,6 @@ class BovineMovement
     #[ApiProperty(readableLink: true)]
     private ?BuildingCase $buildingCase = null;
 
-    #[ORM\ManyToOne]
-    #[Groups(['bovine:read'])]
-    #[ApiProperty(readableLink: true)]
-    private ?Building $building = null;
-
     #[ORM\Column(type: 'datetime_immutable')]
     #[Groups(['bovine:read', 'bovine_movement:write'])]
     private DateTimeImmutable $enteredAt;
@@ -86,18 +81,6 @@ class BovineMovement
         return $this;
     }
 
-    public function getBuilding(): ?Building
-    {
-        return $this->building;
-    }
-
-    public function setBuilding(?Building $building): static
-    {
-        $this->building = $building;
-
-        return $this;
-    }
-
     public function getEnteredAt(): DateTimeImmutable
     {
         return $this->enteredAt;
diff --git a/src/State/Bovin/BovineInventoryExportProvider.php b/src/State/Bovin/BovineInventoryExportProvider.php
index 4146e3d..e1d2f31 100644
--- a/src/State/Bovin/BovineInventoryExportProvider.php
+++ b/src/State/Bovin/BovineInventoryExportProvider.php
@@ -276,7 +276,7 @@ final class BovineInventoryExportProvider implements ProviderInterface
         $type     = $bovine->getBovineType();
         $isLim    = self::BREED_CODE_LIMOUSINE === $type?->getCode();
         $isCharo  = self::BREED_CODE_CHAROLAISE === $type?->getCode();
-        $building = $bovine->getBuildingCase()?->getIdBuilding() ?? $bovine->getBuilding();
+        $building = $bovine->getBuildingCase()?->getIdBuilding();
         $code     = $building?->getCode();
 
         $sheet->setCellValue('A'.$row, $isLim ? 'X' : '');
diff --git a/src/State/Bovin/BovineMovementProcessor.php b/src/State/Bovin/BovineMovementProcessor.php
index 4844ff8..d5da4cd 100644
--- a/src/State/Bovin/BovineMovementProcessor.php
+++ b/src/State/Bovin/BovineMovementProcessor.php
@@ -28,7 +28,6 @@ final class BovineMovementProcessor implements ProcessorInterface
         $enteredAt = $data->hasEnteredAt() ? $data->getEnteredAt() : new DateTimeImmutable();
         $data->setEnteredAt($enteredAt);
         $data->setLeftAt(null);
-        $data->setBuilding(null);
 
         $bovine = $data->getBovine();