Crude Protein Metabolism and Requirement of 12 to 13-Month-Old Xiangzhong Black Cattle

LIU Daoyang; FU Daibo; QU Mingren; ZHU Yuankui; LI Fuqiang; DENG Xintang

doi:10.3969/j.issn.1006-267x.2013.12.032

Chinese Journal of Animal Nutrition >

2013 , Vol. 25 >Issue 12: 3020 - 3026

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.12.032

Short Communications

Crude Protein Metabolism and Requirement of 12 to 13-Month-Old Xiangzhong Black Cattle

LIU Daoyang ,
FU Daibo ,
QU Mingren ,
ZHU Yuankui ,
LI Fuqiang ,
DENG Xintang

Expand

1. Key Laboratory of Animal Nutrition in Jiangxi Province, Jiangxi Agricultural University, Nanchang 330045, China;
2. Hunan Tianhua Industrial Co., Ltd., Loudi 417100, China

Received date: 2013-06-23

Online published: 2013-11-19

Fold

Abstract

This experiment was conducted to explore the crude protein metabolism and requirement of 12 to 13-month-old Xiangzhong black cattle. Thirty healthy Xiangzhong black cattle with a similar body weight of (273.77±15.97) kg, aged 12 to 13 months of age were selected and randomly divided into 5 groups with 6 replicates in each group. Beef cattle were fed 5 diets with different levels of crude protein which were formulated according to the expected weight gain 1.0 kg/d of crude protein required for 70% (group Ⅰ), 85% (group Ⅱ), 100% (group Ⅲ), 115% (group Ⅳ) and 130% (group Ⅴ), respectively. Feeding test and digestion and metabolism test were carried out to measure the growth performance and crude protein metabolism indexes of Xiangzhong black cattle, and to build the models for predicting the crude protein requirement. Pre-test period was 7 d and test period was 50 d. The results showed as follows: there was a high degree of positive linear correlation between average daily gain and crude protein intake or digestible crude protein intake (R²=0.926, R²=0.945); crude protein digestibility, crude protein deposition rate and crude protein biological value were (66.5±5.0)%, (36.6±8.7)% and (54.4±9.3)%, respectively; crude protein digestibility was gradually increased as the increase of crude protein intake (P<0.05), and crude protein deposition rate and crude protein biological value in groups Ⅳ and Ⅴ were significantly greater than those in groups Ⅰ and Ⅲ (P<0.05); crude protein and digestible crude protein requirements for Xiangzhong black cattle could be estimated by the equations:CP=5.29W^0.75+430.69×DG; DCP=2.66W^0.75+377.95×DG. CP represented crude protein requirement (g/d); DCP represented the requirement of digestible crude protein (g/d); W^0.75 represented the units of metabolic body weight (kg); DG represented daily gain (kg/d). The crude protein and digestible crude protein requirements for maintenance of Xiangzhong black cattle are 5.29 and 2.66 g/(kg W^0.75·d), respectively. Crude protein and digestible crude protein requirements for per kilogram gain are 430.69 and 377.95 g, respectively.

Key words： Xiangzhong black cattle; crude protein; requirement

Cite this article

LIU Daoyang , FU Daibo , QU Mingren , ZHU Yuankui , LI Fuqiang , DENG Xintang . Crude Protein Metabolism and Requirement of 12 to 13-Month-Old Xiangzhong Black Cattle[J]. Chinese Journal of Animal Nutrition, 2013 , 25(12) : 3020 -3026 . DOI: 10.3969/j.issn.1006-267x.2013.12.032

References

[1] 陈兴杰,霍之剑,黎强,等.南方农区肉牛养殖发展模式探讨[J].四川畜牧兽医,2010,240(10):15-16.

[2] 燕海峰,肖兵南,文平,等.湘中肉牛杂交改良与杂交组合筛选研究[J].中国草食动物,2009,29(3):36-38.

[3] 高玉红,曹玉凤,高明,等.国内外肉牛饲料营养研究进展[J].中国牛业科学,2010,36(5):43-45,91.

[4] 中华人民共和国农业部.NY/T 815-2004肉牛饲养标准[S].北京:中国农业出版社,2004.

[5] 杨胜.饲料分析及饲料质量检测技术[M].北京:中国农业大学出版社,1993.

[6] 杨凤.动物营养学[M].2版.北京:中国农业出版社,2002.

[7] 黄洁,申跃宇,姜军,等.日粮蛋白质进食量对杂交育成母牛氮代谢的影响[J].中国畜牧杂志,2012,48(11):52-55.

[8] 刘庆华,梁学武,邹霞青.日粮蛋白质水平对生长期闽南黄牛氮代谢的影响[J].黄牛杂志,2003,29(6):10-12.

[9] 穆阿丽,杨在宾,吴乃科,等.7-10月龄杂交肉牛蛋白质需要量及其代谢规律的研究[J].畜牧与兽医,2007,39(4):11-13.

[10] 任继平,赵广永.舍饲拴系饲养条件下肉牛肥育期蛋白质需要的研究[J].中国畜牧杂志,2002,38(2):21-22.

[11] ZANTON G I,HEINRICHS A J.Digestion and nitrogen utilization in dairy heifers limit-fed a low or high forage ration at four levels of nitrogen intake[J].Journal of Dairy Science,2009,92(5):2078-2094.

[12] 冯仰廉,张志文.肉牛舍饲期消化代谢试验及营养需要的研究[J].北京农业大学学报,1982,8(4):97-109.

[13] 李钟乐,金承范,张敏.延边黄牛饲养标准的研究[J].延边农学院学报,1994,16(3):145-150.

[14] 姜淑贞,杨维仁,杨在宾,等.生长犊牛蛋白质需要量及其代谢规律研究[J].中国草食动物,2001,3(2):3-5.

[15] CHIZZOTTI M L,TEDESCHI L O,VALADARES S C.A meta-analysis of energy and protein requirements for maintenance and growth of Nellore cattle[J].Journal of Animal Science,2008,86(7):1588-1597.

[16] JARRIGE R.Alimentation des bovins,ovins et caprins[M].Paris:INRA,1988.

[17] SUSMEL P,SPANGHERO M B,STEFANO C R,et al.Digestibility and allantoin excretion in cows fed diets differing in nitrogen content[J].Livestock Production Science,1993,36:213-222.

[18] NRC.Nutrient requirements of beef cattle[S].7th ed.Washington,D.C.:National Academy Press,1996.

[19] ARC.The nutrient requirements of ruminant livestock[S].Slough:Commonwealth Agricultural Bureaux,1980.

Options

Outlines

模态框（Modal）标题

Abstract

Cite this article

References