Effects of Organic Trace Minerals on Performance, Serum Antioxidant Indexes, Trace Mineral Contents in Egg Yolk and Trace Minerals Emission Reduction of Laying Hens

QU Xiangyong, PENG Canyang, CAI Chao, CHEN Cai, CAO Dongmei, SUN Anquan

doi:10.3969/j.issn.1006-267x.2017.07.027

2017 , Vol. 29 >Issue 7: 2431 - 2439

DOI: https://doi.org/10.3969/j.issn.1006-267x.2017.07.027

Molecular Nutrition

Effects of Organic Trace Minerals on Performance, Serum Antioxidant Indexes, Trace Mineral Contents in Egg Yolk and Trace Minerals Emission Reduction of Laying Hens

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1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. Collaborative Innovation Center of Hunan Province Livestock and Poultry Safety Production, Changsha 410128, China;
3. Hunan Sanjian Agricultural Science and Technology Limited Liability Company, Changde 415701, China;
4. Omega Biotech Shanghai Co., Ltd., Shanghai 201203, China

Received date: 2017-01-01

Online published: 2017-07-05

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Abstract

This study was conducted to investigate the effects of organic trace minerals (oTM) (small peptides chelated iron, copper, manganese, zinc and nano-selenium) at lower dose than normal inorganic trace minerals (iTM) supplemental level of premix on performance, serum antioxidant indexes, trace mineral contents in egg yolk and trace minerals emission reduction of laying hens. A total of 225 healthy Hy-Line brown layers (50 weeks of age) with similar body weight were randomly divided into 5 groups with 5 replicates per group and 9 hens per replicate. Hens in the inorganic group were fed a basal diet supplemented with iTM of iron, copper, manganese, zinc, selenium at 75, 6, 60, 60, 0.3 mg/kg, respectively. Hens in the organic groups were fed the basal diet supplemented with the combination of small peptides chelated iron, copper, manganese, zinc and nano-selenium at 70%, 60%, 50% and 40% levels of iTM, respectively. The pre-experimental period lasted for 10 days, and the experimental period lasted for 42 days. The results showed as follows: 1) compared with inorganic group, laying rate of 60% organic group was significantly increased (P<0.05), while feed to egg ratio was significantly decreased (P<0.05); there was no significant difference in egg quality among groups (P>0.05). 2) Compared with inorganic group, serum glutathione peroxidase (GSH-Px) activity in 70% organic group was significantly increased (P<0.05), serum total antioxidant capacity (T-AOC) was significantly increased in all organic groups (P<0.05), and serum content of malondialdehyde (MDA) was significantly decreased in 70% and 60% organic groups (P<0.05). 3) There were no significant difference on the contents of copper, manganese and iron in egg yolk (P>0.05); compared with inorganic group, 60% organic group significantly increased zinc content in egg yolk by 22.92% (P<0.05); although 50% and 40% organic groups significantly increased content in egg yolk (P<0.05), selenium content was significantly reduced (P<0.05). 4) Compared with inorganic group, copper, manganese, zinc contents in feces were significantly decreased in all organic groups (P<0.05). In conclusion, in order to keep normal physiological function and production of laying hens at 50 to 56 weeks of age, the supplementation of oTM (small peptides chelated iron, copper, manganese, zinc and nano-selenium) at 60% of normal supplemental level premix inorganic minerals is better.

Key words： organic trace minerals; laying hens; performance; antioxidant; emission reduction

Cite this article

QU Xiangyong, PENG Canyang, CAI Chao, CHEN Cai, CAO Dongmei, SUN Anquan . Effects of Organic Trace Minerals on Performance, Serum Antioxidant Indexes, Trace Mineral Contents in Egg Yolk and Trace Minerals Emission Reduction of Laying Hens[J]. Chinese Journal of Animal Nutrition, 2017 , 29(7) : 2431 -2439 . DOI: 10.3969/j.issn.1006-267x.2017.07.027

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