//Creat a new class called Textures

public class Textures {
	Texture backGround;

	public Textures(){
		//assuming your not using AssetManager
		backGround = new Texture(Gdx.files.internal("data/bg.jpg"));
		}
}

//in your main project class

Textures t;

// in your constructer

t = new Textures();


// when you want to draw the texture

batch.begin();
batch.draw(t.backGround,x,y,w,h);
batch.end();