Heterosis Value Estimation of Hatching Weight and Growth Characteristics of Reciprocal Crossing Tegal and Magelang ducks

Abstract

The aim of this research is to estimate heterosis value of hatching weight and growth characteristic of reciprocal crossing Tegal and Magelang ducks. The cross between the male Tegal and female Magelang ducks is called Gallang (F1) and the cross between male Magelang ducks and the Tegal female is called Maggal (F1). The research material are 325 ducks consisted of Tegal and Magelang ducks with 8 males and 48 females each, also the reciprocal cross result of 112 Gallang ducks and 101 Maggal ducks. Research method is experiment. T test is used to determine the difference of the hatching weight, the weight of eight-week age, and the growth until the age of eight weeks between Maggal and Gallang ducks. The heterosis value is obtained by comparing the ability of the cross with the parent. This research has shown no heterosis in hatching weight whether in Gallang ducks (-4,94) or Maggal ducks (-11,72). The hatching weight of Gallang ducks (43.07 ± 4.77 g) was not significantly different from Maggal ducks (40.33 ± 2.89 g) and both were lighter than Tegal ducks (44.19 ± 4.77 g) and Magelang ducks (46.43 ± 4.37 g). In relative growth there wasn’t good heterosis in Gallang ducks (-2.13) and Maggal ducks (-6.38). The relative growth of Gallang ducks (0.23 ± 0.016) did not differ significantly with Maggal ducks (0.22 ± 0.012) and both were lighter than Tegal ducks (0.23 ± 0.003) and Magelang ducks (0.24 ± 0.002). Heterosis was not significant in the weight of eight-week age of Maggal ducks (-4.90), but exhibit a positive value in Gallang ducks (1.60). The conclusion of this study is the positive heterosis value in weight of eight-week age in Gallang ducks showed that it can be expected to be broiler ducks.