Ảnh hưởng của bổ sung vi khoáng mangan và kẽm vào khẩu phần lên năng suất và chất lượng trứng gà Hisex Brown

Lê Thị Mến, Huỳnh Minh Trí, Vo Van Son, Nguyễn Đức Hiền
2016 Can Tho University Journal of Science  
An experiment was carried out on 540 Hisex Brown laying hens (35 weeks of age) whose design consisted of two factors and 5 replicates. The first factor was Mn (0, 80, 120 ppm) and the second was Zn (0, 40, 60 ppm). Results showed that egg production was highest for the Mn120 treatment (90.62%) and lowest for the control (84.51%) (P<0.05). Broken egg percentage was lowest for the Mn120 treatment (1.24%) and highest for the control (4.71%) (P<0.05). The yolk proportion of the Mn80 treatment
more » ... %) was the highest and the control was the lowest (24.76%) (P<0.05). Haugh unit and eggshell quality were also higher than those of the control (P<0.05). Regarding Zn factor, the highest egg production was in the Zn40 treatment (89.48%). Broken egg percentage in the Zn40 and Zn60 treatments decreased (2.46%) as compared with that in the control (3.56%). Egg quality parameters were also higher than those of the control (P<0.05). Interaction between Mn*Zn showed that broken egg percentage was the lowest in the Mn120*Zn60 (0.91%) and the highest in the control (6.93%). Egg quality was also improved when adding Mn and Zn into the diets. Feed consumed per egg (g/egg) was significantly lower (P<0.05) when adding both of Mn and Zn for laying hens.
doi:10.22144/ctu.jvn.2016.579 fatcat:3shszpgewnhytnlsf3mq7rt2ze