Effects of Dietary Iron Supplemental Level on Performance, Reproductive Performance, Egg Quality and Blood Physiological and Biochemical Parameters of Breeding Geese during Laying Period

SUI Fuliang, LI Wenli, WANG Hefei, DAI Guotao, SHI Jing, WANG Baowei

doi:10.3969/j.issn.1006-267x.2019.06.023

2019 , Vol. 31 >Issue 6: 2634 - 2641

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.06.023

Molecular Nutrition

Effects of Dietary Iron Supplemental Level on Performance, Reproductive Performance, Egg Quality and Blood Physiological and Biochemical Parameters of Breeding Geese during Laying Period

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1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
2. Nutrition and Feed Laboratory of China Agriculture Research System, Institute of High Quality Waterfowl, Qingdao Agricultural University, Qingdao 266109, China

Received date: 2018-12-11

Online published: 2019-06-17

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Abstract

This experiment was conducted to study the effects of dietary iron supplemental level on performance, reproductive performance, egg quality and blood physiological and biochemical parameters of breeding geese during laying period, to study the iron requirement of breeding geese during laying period. A total of 120 thirty-four-week-old breeding geese with the similar body condition were randomly divided into 6 groups with 4 replicates per group and 5 geese per replicate (1 male and 4 female). Geese in the 6 groups (groups Ⅰ to Ⅵ) were fed basal diets supplemented with 0, 20, 40, 60, 80 and 100 mg/kg iron, respectively. The pre-experimental period lasted for 1 week, and the experimental period lasted for 10 weeks. The results showed as follows:1) the average egg weight of group Ⅴ was significantly higher than that of groups Ⅰ, Ⅱ and Ⅲ (P<0.05 or P<0.01). According to the quadratic curve fitting equation, the average egg weight was the highest when dietary iron supplemental level was 80.61 mg/kg. 2) The hatching egg qualified rate, hatching egg hatching rate and healthy rate of group Ⅴ were significantly higher than those of other groups (P<0.05 or P<0.01), and the hatching egg fertilization rate of group Ⅴ was significantly higher than that of groups Ⅰ, Ⅱ, Ⅲ and Ⅵ(P<0.05 or P<0.01). According to the quadratic curve fitting equation, the hatching egg qualified rate was the highest when dietary iron supplemental level was 79.87 mg/kg; the hatching egg fertilization rate was the highest when dietary iron supplemental level was 84.82 mg/kg. 3) The yolk color of group Ⅴ was significantly higher than that of groups Ⅰ, Ⅱ, Ⅲ and Ⅵ (P<0.05). 4) The contents of urea nitrogen and creatinine in serum of groups Ⅳ and Ⅴ were significantly lower than those of groups Ⅰ, Ⅱ and Ⅲ (P<0.05 or P<0.01), and the serum iron content of groups Ⅳ and Ⅴ was significantly higher than that of groups Ⅰ, Ⅱ and Ⅲ (P<0.05 or P<0.01). 5) The blood red cell count of group Ⅴ was significantly higher than that of groups Ⅰ and Ⅱ (P<0.05 or P<0.01), the hematocrit, hemoglobin concentration and average hemoglobin content in blood of groups Ⅳ, Ⅴ and Ⅵ were significantly lower than those of other groups (P<0.05 or P<0.01), and the blood mean corpuscular volume of groups Ⅳ, Ⅴ and Ⅵ was significantly higher than that of groups Ⅰ, Ⅱ and Ⅲ (P<0.05 or P<0.01). In conclusion, dietary iron supplemental level has significant effects on average egg weight, reproductive performance, yolk color and blood physiological and biochemical parameters of breeding geese during laying period, on the basis of above results, it is suggested that the dietary iron supplemental level of breeding geese during laying period is 80.61 to 84.82 mg/kg.

Key words： iron; breeding geese; performance; reproductive performance; egg quality; biochemical parameters

Cite this article

SUI Fuliang, LI Wenli, WANG Hefei, DAI Guotao, SHI Jing, WANG Baowei . Effects of Dietary Iron Supplemental Level on Performance, Reproductive Performance, Egg Quality and Blood Physiological and Biochemical Parameters of Breeding Geese during Laying Period[J]. Chinese Journal of Animal Nutrition, 2019 , 31(6) : 2634 -2641 . DOI: 10.3969/j.issn.1006-267x.2019.06.023

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