diff --git a/frontend/components/ui/UiDataTable.vue b/frontend/components/ui/UiDataTable.vue
index e385879..b3a4eee 100644
--- a/frontend/components/ui/UiDataTable.vue
+++ b/frontend/components/ui/UiDataTable.vue
@@ -19,7 +19,10 @@
                         v-for="(item, index) in paginatedItems"
                         :key="item.id ?? index"
                         class="grid gap-6 px-4 py-3 text-sm border-t border-slate-200"
-                        :class="rowClickable ? 'hover:bg-slate-50 cursor-pointer' : ''"
+                        :class="[
+                            rowClickable ? 'hover:bg-slate-50 cursor-pointer' : '',
+                            rowClass ? rowClass(item) : ''
+                        ]"
                         :style="{ gridTemplateColumns: gridCols }"
                         :role="rowClickable ? 'button' : undefined"
                         :tabindex="rowClickable ? 0 : undefined"
@@ -83,12 +86,12 @@
             <nav aria-label="Pagination" class="flex items-center gap-1">
                 <button
                     type="button"
-                    class="h-10 px-3 text-sm text-primary-500 hover:underline disabled:cursor-not-allowed disabled:text-slate-400 disabled:no-underline"
+                    class="h-10 rounded border border-primary-500 bg-white px-3 text-sm text-primary-500 hover:bg-primary-500 hover:text-white disabled:cursor-not-allowed disabled:border-slate-300 disabled:text-slate-400 disabled:hover:bg-white disabled:hover:text-slate-400"
                     :disabled="currentPage <= 1"
                     aria-label="Page précédente"
                     @click="goToPage(currentPage - 1)"
                 >
-                    Prev
+                    Précédent
                 </button>
 
                 <template v-for="(entry, i) in visiblePages" :key="`${typeof entry}-${entry}-${i}`">
@@ -113,12 +116,12 @@
 
                 <button
                     type="button"
-                    class="h-10 px-3 text-sm text-primary-500 hover:underline disabled:cursor-not-allowed disabled:text-slate-400 disabled:no-underline"
+                    class="h-10 rounded border border-primary-500 bg-white px-3 text-sm text-primary-500 hover:bg-primary-500 hover:text-white disabled:cursor-not-allowed disabled:border-slate-300 disabled:text-slate-400 disabled:hover:bg-white disabled:hover:text-slate-400"
                     :disabled="currentPage >= totalPages"
                     aria-label="Page suivante"
                     @click="goToPage(currentPage + 1)"
                 >
-                    Next
+                    Suivant
                 </button>
             </nav>
         </div>
@@ -145,6 +148,7 @@ const props = withDefaults(defineProps<{
     showActions?: boolean
     emptyMessage?: string
     loading?: boolean
+    rowClass?: (item: T) => string | undefined
 }>(), {
     totalItems: undefined,
     page: 1,
@@ -153,7 +157,8 @@ const props = withDefaults(defineProps<{
     rowClickable: false,
     showActions: false,
     emptyMessage: 'Aucune donnée',
-    loading: false
+    loading: false,
+    rowClass: undefined
 })
 
 const emit = defineEmits<{
diff --git a/frontend/pages/inventory.vue b/frontend/pages/inventory.vue
index 9f681a4..40ddfb3 100644
--- a/frontend/pages/inventory.vue
+++ b/frontend/pages/inventory.vue
@@ -30,6 +30,7 @@
                 :items="items"
                 :total-items="totalItems"
                 :loading="loading"
+                :row-class="rowClass"
             >
                 <template #header-nationalNumber>
                     <UiTextInput
@@ -72,9 +73,15 @@
                 <template #header-buildingCase.caseNumber>
                     <UiTextInput :model-value="''" placeholder="Case" size="compact" disabled />
                 </template>
+                <template #header-age>
+                    <UiTextInput :model-value="''" placeholder="Age" size="compact" disabled />
+                </template>
                 <template #cell-birthDate="{ item }">
                     {{ formatDate(item.birthDate) }}
                 </template>
+                <template #cell-age="{ item }">
+                    {{ formatAgeLabel(item.ageMonths) }}
+                </template>
                 <template #cell-arrivalDate="{ item }">
                     {{ formatDate(item.arrivalDate) }}
                 </template>
@@ -94,6 +101,7 @@
 import type { BovineData } from '~/services/dto/bovine-data'
 import { useAuthStore } from '~/stores/auth'
 import { useDataTableServerState } from '~/composables/useDataTableServerState'
+import { formatAgeLabel } from '~/utils/bovine-age'
 
 const router = useRouter()
 const auth = useAuthStore()
@@ -177,11 +185,12 @@ const birthDateFilter = singleDateFilter('birthDate[after]', 'birthDate[strictly
 
 const columns = [
     { key: 'nationalNumber', label: 'N° National', width: '160px' },
-    { key: 'workNumber', label: 'N° Travail', width: '110px' },
-    { key: 'sex', label: 'Sexe', width: '90px' },
+    { key: 'workNumber', label: 'N° Travail', width: '85px' },
+    { key: 'sex', label: 'Sexe', width: '70px' },
     { key: 'birthDate', label: 'Né le', width: '120px' },
+    { key: 'age', label: 'Age', width: '110px' },
     { key: 'breedCode', label: 'Race' },
-    { key: 'buildingCase.building.label', label: 'Bâtiment' },
+    { key: 'buildingCase.building.label', label: 'Bâtiment', width: '1.5fr' },
     { key: 'buildingCase.caseNumber', label: 'Case', width: '80px' },
     { key: 'arrivalDate', label: 'Entrée le', width: '120px' }
 ]
@@ -197,5 +206,12 @@ const formatDate = (date: string | null) => {
     })
 }
 
+const rowClass = (item: BovineData): string => {
+    if (item.ageMonths === null || item.ageMonths === undefined) return ''
+    if (item.ageMonths >= 24) return 'bg-red-100 hover:bg-red-200'
+    if (item.ageMonths >= 22) return 'bg-orange-100 hover:bg-orange-200'
+    return ''
+}
+
 onMounted(reload)
 </script>
diff --git a/frontend/services/dto/bovine-data.ts b/frontend/services/dto/bovine-data.ts
index 32378ad..db5d857 100644
--- a/frontend/services/dto/bovine-data.ts
+++ b/frontend/services/dto/bovine-data.ts
@@ -15,6 +15,7 @@ export interface BovineData {
     birthDate: string | null
     breedCode: string | null
     sex: string | null
+    ageMonths: number | null
     exitedAt: string | null
 }
 
diff --git a/frontend/utils/bovine-age.ts b/frontend/utils/bovine-age.ts
new file mode 100644
index 0000000..6613bc9
--- /dev/null
+++ b/frontend/utils/bovine-age.ts
@@ -0,0 +1,10 @@
+export const formatAgeLabel = (months: number | null | undefined): string => {
+    if (months === null || months === undefined) return '—'
+    const years = Math.floor(months / 12)
+    const remaining = months % 12
+    let label = ''
+    if (years > 0) label = `${years} an${years > 1 ? 's' : ''}`
+    if (remaining > 0) label += `${label ? ' ' : ''}${remaining} mois`
+    if (!label) label = '< 1 mois'
+    return label
+}
diff --git a/migrations/Version20260424074454.php b/migrations/Version20260424074454.php
new file mode 100644
index 0000000..7a9b6b8
--- /dev/null
+++ b/migrations/Version20260424074454.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20260424074454 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE bovine ADD age_months INT DEFAULT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE bovine DROP age_months');
+    }
+}
diff --git a/src/Entity/Bovine.php b/src/Entity/Bovine.php
index 229af14..de80aaa 100644
--- a/src/Entity/Bovine.php
+++ b/src/Entity/Bovine.php
@@ -22,6 +22,7 @@ use Symfony\Component\Serializer\Attribute\Groups;
 use Symfony\Component\Serializer\Normalizer\DateTimeNormalizer;
 
 #[ORM\Entity]
+#[ORM\HasLifecycleCallbacks]
 #[ORM\Table(name: 'bovine')]
 #[ORM\UniqueConstraint(name: 'uniq_bovine_national_number', columns: ['national_number'])]
 #[ApiFilter(SearchFilter::class, properties: [
@@ -106,6 +107,10 @@ class Bovine
     #[Groups(['bovine:read', 'building_case:read'])]
     private ?string $sex = null;
 
+    #[ORM\Column(type: 'integer', nullable: true)]
+    #[Groups(['bovine:read', 'building_case:read'])]
+    private ?int $ageMonths = null;
+
     #[ORM\Column(type: 'date_immutable', nullable: true)]
     #[Groups(['bovine:read', 'building_case:read'])]
     #[Context([DateTimeNormalizer::FORMAT_KEY => 'Y-m-d'])]
@@ -252,4 +257,30 @@ class Bovine
 
         return $this;
     }
+
+    public function getAgeMonths(): ?int
+    {
+        return $this->ageMonths;
+    }
+
+    public function setAgeMonths(?int $ageMonths): static
+    {
+        $this->ageMonths = $ageMonths;
+
+        return $this;
+    }
+
+    #[ORM\PrePersist]
+    #[ORM\PreUpdate]
+    public function refreshAgeMonths(): void
+    {
+        if (null === $this->birthDate) {
+            $this->ageMonths = null;
+
+            return;
+        }
+
+        $diff            = $this->birthDate->diff(new DateTimeImmutable());
+        $this->ageMonths = ($diff->y * 12) + $diff->m;
+    }
 }
diff --git a/src/State/Bovin/BovineSyncInventoryProcessor.php b/src/State/Bovin/BovineSyncInventoryProcessor.php
index 58cff5b..58e2db7 100644
--- a/src/State/Bovin/BovineSyncInventoryProcessor.php
+++ b/src/State/Bovin/BovineSyncInventoryProcessor.php
@@ -100,5 +100,6 @@ final class BovineSyncInventoryProcessor implements ProcessorInterface
         }
         $bovine->setArrivalDate($latestEntry);
         $bovine->setExitDate($latestExit);
+        $bovine->refreshAgeMonths();
     }
 }