Molecular Nutrition

Effects of Diets with Different Proportions of Whole Plant Corn Silage on Performance, Nutrient Utilization, Hematological Indexes and Serum Oxidative Stress Indexes of Growing Pigs

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  • 1. College of Animal Science and Technology, Shandong Agricultural University, Key Laboratory of Animal Biological Engineering and Disease Control in Shandong Province, Tai'an 271018, China;
    2. Shandong Provincial Feed Quality Inspection Station, Ji'nan 250022, China

Received date: 2017-11-01

  Online published: 2018-05-06

Abstract

The aim of the present study was to investigate the effects of diets with different proportions of whole plant corn silage on performance, nutrient utilization, hematological indexes and serum oxidative stress indexes of growing pigs. A total of 32 growing pigs (Duroc×Landrace×Large White) with the similar parity and body weight[(33.16±3.49) kg] were allocated into 4 groups with 8 replicates per group, and pigs were fed individually in a metabolic cage for 42 days after 7 days adaptation. The control group was fed a basal diet, and the dietary nutrient level was according to reference of NY/T 65-2004 lean pig feeding standard. In the three test groups, the ratios of 20%, 30% and 40% whole plant corn silage was used to replace the basal diet, respectively. The crude fiber content (dry matter basis) in the above 4 diets was 3.0%, 3.5%, 4.0% and 4.5%, respectively. The results showed that with the whole plant corn ratio increasing in the diet, the final body weight, average daily gain (ADG), apparent digestibility of nutrients (dry matter, organic matter, crude protein, ether extract and gross energy), biological value (BV) of protein, net protein utilization (NPU), gross energy metabolizable rate, hemoglobin concentration and serum ceruloplasmin (CER) content of growing pigs decreased linearly (P<0.05), but the average daily feed intake as fed basis (FB-ADFI), average daily feed intake as dry matter basis (DM-ADFI), average daily crude fiber intake (ADCFI) and feed to gain ratio as fed basis (FB-F/G) and feed gain ratio as dry matter basis (DM-F/G) increased linearly (P<0.05). Compared with the control group, no significant effects on the ADG, DM-ADFI, DM-F/G, BV of protein, NPU, hematological indexes and serum oxidative stress indexes of growing pigs of 20% and 30% whole plant corn silage groups were observed (P>0.05). However, the final body weight, ADG, nutrient apparent digestibility, hemoglobin concentration and serum CER content of 40% whole plant corn silage group were significantly decreased (P<0.05). It is concluded that the whole plant corn silage can be used for the preparation of low nutritional level diet for growing pigs, which can ensure the performance and improve health status when the feeding ratio is 20% to 30%.

Cite this article

SUN Jing, YANG Zaibin, YANG Chen, WU Xiaojing, LI Simeng, YANG Weiren, XUE Feng, LI Huirong, LI Xiangming, JIANG Shuzhen . Effects of Diets with Different Proportions of Whole Plant Corn Silage on Performance, Nutrient Utilization, Hematological Indexes and Serum Oxidative Stress Indexes of Growing Pigs[J]. Chinese Journal of Animal Nutrition, 2018 , 30(5) : 1703 -1712 . DOI: 10.3969/j.issn.1006-267x.2018.05.013

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