<form [formGroup]="feedForm">
  <div formArrayName="packages">
    <div *ngFor="let package of feedForm.get('packages').controls; let i = index;">
      <div [formGroupName]="i">
        <mat-form-field>
          <input matInput formControlName="type"/>
        </mat-form-field>

<form [formGroup]="feedForm">
      <div formArrayName="packages">
        <div *ngFor="let package of feedForm.get('packages').controls; let i = index;">
          <div [formGroupName]="i">
            <mat-form-field>
              <mat-select placeholder="Service">
                <mat-option *ngFor="let service of services" [value]="service.value">{{service.view}}</mat-option>
              </mat-select>
            </mat-form-field>