Poultry Nutrition

Effects of Dietary Nicotinic Acid Supplemental Level on Growth Performance, Slaughter Performance and Nutrient Apparent Availability of Wulong Geese

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  • 1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
    2. Institute of High Quality Waterfowl, Qingdao Agricultural University, Qingdao 266109, China

Received date: 2014-02-19

  Online published: 2014-08-13

Abstract

This experiment was conducted to study the effects of dietary nicotinic acid supplemental level on growth performance, slaughter performance and nutrient apparent availability of Wulong geese. Three hundred and sixty one-day-old Wulong geese were selected and randomly divided into 6 groups with 6 replicates in each group and 10 geese in each replicate. Geese in the control group (group Ⅰ) were fed a basal diet (nicotinic acid content: 1 to 4 weeks of age was 25.54 mg/kg; 5 to 16 weeks of age was 23.48 mg/kg), and geese in the other experiment groups (groups Ⅱ to Ⅵ) were fed the basal diets supplemented with 20, 40, 60, 80 and 100 mg/kg nicotinic acid, respectively. The experiment lasted for 16 weeks. The results showed as follows: 1) compared with the control group, 1 to 4 weeks of age, the supplementation of 60 mg/kg nicotinic acid significantly decreased the ratio of feed to gain (F/G) (P<0.01), but there was no significant difference in average daily gain among all groups (P>0.05). Compared with the control group, 5 to 8 weeks and 9 to 16 weeks of age, the supplementation of 40 mg/kg nicotinic acid significantly decreased F/G (P<0.05 and P<0.01). 2) Compared with the control group, the supplementation of 60 mg/kg nicotinic acid significantly increased dressing percentage, percentage of half-eviscerated weight, percentage of eviscerated weight of geese at 4 weeks of age (P<0.01), but there were no significant differences in percentage of leg muscle and percentage of breast muscle among all groups (P>0.05). The supplementation of 60 mg/kg nicotinic acid significantly increased dressing percentage, percentage of half-eviscerated weight, percentage of leg muscle of geese and percentage of breast muscle at 16 weeks of age (P<0.01), and significantly increased percentage of eviscerated weight of geese at 16 weeks of age (P<0.05). 3) Compared with the control group, the supplementation of 60 mg/kg nicotinic acid significantly increased the apparent availability of dry matter, organic matter, crude protein, ether extract, calcium, phosphorus, neutral detergent fiber and acid detergent fiber (P<0.01). In conclusion, the nicotinic acid requirement of Wulong geese at 1 to 4 weeks of age is 85.54 mg/kg; that of 5 to 8 weeks of age is 63.48 mg/kg; and that of 9 to 16 weeks of age is 63.48 mg/kg.

Cite this article

DUAN Chenlei, WANG Baowei, GE Wenhua, ZHANG Ming, LI Wenli . Effects of Dietary Nicotinic Acid Supplemental Level on Growth Performance, Slaughter Performance and Nutrient Apparent Availability of Wulong Geese[J]. Chinese Journal of Animal Nutrition, 2014 , 26(8) : 2136 -2144 . DOI: 10.3969/j.issn.1006-267x.2014.08.015

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