PKHD1L1 and obesity due to melanocortin 4 receptor deficiency: In the comparison between the DN and TN lines, we detected several candidate genes: GLO1, which is assumed to be involved in fatness [45], is important for nutrition energy intake and obesity [46], and is connected with pig birth weight variability [47]; GOT1 and PKHD1L1, which have been reported as candidate genes for intramuscular fat content [48] and variation in pH of meat [49], respectively; and TSPAN11, which was associated with metabolic body weight in a study on Holstein dairy cows [50].