POULTRY NUTRITION AND FEED

Dietary Crude Protein and Metabolic Energy Requirements of Rugao Yellow Chickens Aged from 8 to 18 Weeks

  • LU Jian ,
  • QU Liang ,
  • WANG Xingguo ,
  • LI Yongfeng ,
  • MA Meng ,
  • DOU Taocun ,
  • HU Yuping ,
  • GUO Jun ,
  • LI Shangmin ,
  • WANG Kehua
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  • 1. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China;
    2. College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China

Received date: 2021-04-13

  Online published: 2021-11-10

Supported by

 

Abstract

This experiment was conducted to evaluate the effects of dietary crude protein (CP) and metabolic energy (ME) levels on growth performance, flock uniformity and shank and comb development of Rugao yellow chickens aged from 8 to 18 weeks, to determine the CP and ME requirements of Rugao yellow chickens aged from 8 to 18 weeks. One thousand and eight hundred 8-week-old healthy Rugao yellow chickens with similar body weight were assigned to 15 groups with 8 replicates per group and 15 hens per replicate. This experiment took a 5×3 factorial design with 5 dietary CP levels (14.00%, 14.75%, 15.50%, 16.25% and 17.00%) and 3 dietary ME levels (10.88, 11.30 and 11.72 MJ/kg). The trial period lasted for 10 weeks (8 to 18 weeks of age). The results showed as follows:1) the body weight of laying hens at 18 weeks of age was significantly affected by dietary CP level (P<0.05), and the body weight of laying hens at 15, 16, 17 and 18 weeks of age was significantly affected by dietary ME level (P<0.05). 2) The average daily weight gain (ADG), average daily feed intake (ADFI) and the ratio of feed to gain (F/G) of laying hens aged from 8 to 18 weeks were significantly affected by dietary CP and ME levels (P<0.05); besides, the ADG and F/G of laying hens aged from 8 to 15 weeks and the ADFI of laying hens aged from 16 to 18 weeks were significantly affected by dietary ME level (P<0.05). 3) The average daily crude protein intake (ADCPI) and the ratio of crude protein to gain (CPCR) of laying hens aged from 8 to 15 weeks, 16 to 18 weeks and 8 to 18 weeks, and the ratio of metabolic energy to gain (MECR) of laying hens aged from 8 to 18 weeks were significantly affected by dietary CP level (P<0.05). The ADCPI of laying hens aged from 16 to 18 weeks and 8 to 18 weeks, the average daily metabolic energy intake (ADMEI) of laying hens aged from 8 to 15 weeks, 16 to 18 weeks and 8 to 18 weeks, and the CPCR and MECR of laying hens aged from 8 to 15 weeks and 8 to 18 weeks were significantly affected by dietary ME level (P<0.05). 4) The body weight coefficient of variation of laying hens at 15, 16, 17, and 18 weeks of age was significantly affected by dietary ME level (P<0.05). 5) The shank length, comb length and comb height of laying hens at 15 and 18 weeks of age were not affected by dietary CP or ME levels (P>0.05). 6) Dietary CP and ME levels had no significant interaction in growth performance, flock uniformity and shank and comb development of laying hens aged from 8 to 18 weeks (P>0.05). In conclusion, comprehensive considering the indexes of growth performance, flock uniformity and shank and comb development, the appropriate dietary CP and ME levels for Rugao yellow chickens aged from 8 to 18 weeks are 14.75% and 11.72 MJ/kg, respectively.

Cite this article

LU Jian , QU Liang , WANG Xingguo , LI Yongfeng , MA Meng , DOU Taocun , HU Yuping , GUO Jun , LI Shangmin , WANG Kehua . Dietary Crude Protein and Metabolic Energy Requirements of Rugao Yellow Chickens Aged from 8 to 18 Weeks[J]. Chinese Journal of Animal Nutrition, 2021 , 33(11) : 6123 -6136 . DOI: 10.3969/j.issn.1006-267x.2021.11.014

References

[1] 王克华, 窦套存, 高玉时, 等.如皋鸡生长发育规律和体尺性状研究[J].中国畜牧兽医, 2007, 34(6):40-43. WANG K H, DOU T C, GAO Y S, et al.Research on the rule of development and growth and body measurements traits of Rugao chicken[J].China Animal Husbandry & Veterinary Medicine, 2007, 34(6):40-43.(in Chinese)
[2] 王克华, 窦套存, 曲亮, 等.如皋黄鸡产蛋性能与遗传参数分析[J].中国畜牧杂志, 2010, 46(9):12-14. WANG K H, DOU T C, QU L, et al.Analysis of laying performance and genetic parameters of Rugao yellow chicken[J].Chinese Journal of Animal Science, 2010, 46(9):12-14.(in Chinese)
[3] 沈曼曼, 曲亮, 王星果, 等.如皋黄鸡连产性状及其遗传参数分析[J].中国家禽, 2019, 41(16):5-9. SHEN M M, QU L, WANG X G, et al.Analysis on genetic parameters of clutch trait in Rugao yellow chicken[J].China Poultry, 2019, 41(16):5-9.(in Chinese)
[4] 洪军, 王克华, 李东锋, 等.NPYPRL基因SNP位点对如皋黄鸡产蛋性能的组合效应研究[J].中国畜牧杂志, 2012, 48(7):1-4. HONG J, WANG K H, LI D F, et al.Effect of genotype combinations between the single nucleotide polymorphisms of NPY and PRL genes on the egg production traits in Rugao-yellow chicken[J].Chinese Journal of Animal Science, 2012, 48(7):1-4.(in Chinese)
[5] SHI S R, LU J, TONG H B, et al.Effects of graded replacement of soybean meal by sunflower seed meal in laying hen diets on hen performance, egg quality, egg fatty acid composition, and cholesterol content[J].Journal of Applied Poultry Research, 2012, 21(2):367-374.  
[6] LU J, QU L, SHEN M M, et al.Safety evaluation of daidzein in laying hens:effects on laying performance, hatchability, egg quality, clinical blood parameters, and organ development[J].Poultry Science, 2017, 96(7):2098-2103.  
[7] 卢建, 曲亮, 李永峰, 等.15-56日龄如皋黄鸡蛋鸡粗蛋白质和代谢能的需要量[J].动物营养学报, 2015, 27(12):3708-3719. LU J, QU L, LI Y F, et al.Dietary crude protein and metabolic energy requirements of Rugao yellow laying hens aged from 15 to 56 days[J].Chinese Journal of Animal Nutrition, 2015, 27(12):3708-3719.(in Chinese)
[8] BESTMAN M, RUIS M W, HEIJMANS J, et al.Poultry signals:a practical guide for bird focused poultry farming[M].Zutphen:Roodbont Publishers B.V., 2012:42-55.
[9] SUMMERS J D, LEESON S.Factors influencing early egg size[J].Poultry Science, 1983, 62(7):1155-1159.  
[10] 朱由彩.淮南麻黄鸡日粮蛋白质水平研究[D].硕士学位论文.合肥:安徽农业大学, 2013. ZHU Y C.The study of appropriate dietary crude protein for Huainan partridge chicken[D].Master's Thesis.Hefei:Anhui Agricultural University, 2013.(in Chinese)
[11] 冯焯, 郝艳霜, 赵国先, 等.育成期太行鸡饲粮代谢能和粗蛋白质适宜水平的研究[J].动物营养学报, 2018, 30(7):2541-2549. FENG Z, HAO Y S, ZHAO G X, et al.Study on optimum dietary metabolizable energy and crude protein levels of Taihang chickens during growing period[J].Chinese Journal of Animal Nutrition, 2018, 30(7):2541-2549.(in Chinese)
[12] 袁超, 徐志刚, 蒋媛婧, 等.新杨绿壳蛋鸡育成期能量和蛋白质的需要量[J].动物营养学报, 2013, 25(4):735-742. YUAN C, XU Z G, JIANG Y J, et al.Energy and protein requirements of growing Xinyang green shell hens[J].Chinese Journal of Animal Nutrition, 2013, 25(4):735-742.(in Chinese)
[13] 苏彬.银香麻鸡日粮适宜能量、蛋白水平研究[D].硕士学位论文.南宁:广西大学, 2006. SU B.The study of appropriate dietary metabolizable energy and crude protein for Yinxiang chicken[D].Master's Thesis.Nanning:Guangxi University, 2006.(in Chinese)
[14] MORRIS T R, GOUS R M, ABEBE S.Effects of dietary protein concentration on the response of growing chicks to methionine[J].British Poultry Science, 1992, 33(4):795-803.  
[15] WESTERTERP-PLANTENGA M S.Protein intake and energy balance[J].Regulatory Peptides, 2008, 149(1/2/3):67-69.
[16] SALDAÑA B, GUZMÁN P, CÁMARA L, et al.Feed form and energy concentration of the diet affect growth performance and digestive tract traits of brown-egg laying pullets from hatching to 17 weeks of age[J].Poultry Science, 2015, 94(8):1879-1893.  
[17] 霍学婷, 郝文博, 赵丽红, 等.日粮代谢能水平对"京红1号"蛋种鸡育成期生长性能及后续生产性能的影响[J].中国畜牧杂志, 2018, 54(3):57-61. HUO X T, HAO W B, ZHAO L H, et al.Effects of dietary metabolizable energy levels on growth performance and subsequent production performance of Jinghong layers in finishing period (9-13 week)[J].Chinese Journal of Animal Science, 2018, 54(3):57-61.(in Chinese)
[18] SELL J L, HASIAK R J, OWINGS W J.Independent effects of dietary metabolizable energy and protein concentrations on performance and carcass characteristics of Tom turkeys[J].Poultry Science, 1985, 64(8):1527-1535.  
[19] 童海兵, 王克华, 陆俊贤, 等.鸡种、日粮能量和日粮蛋白质对体尺性状的影响[J].中国家禽, 2004, 8(增刊1):96-99. TONG H B, WANG K H, LU J X, et al.Effects of breed and feed levels on the stature of chicken[J].Chinese Poultry Science, 2004, 8(S1):96-99.(in Chinese)
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