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　　《中国奶业年鉴》是反映我国奶业发展情况的综合性年刊，也是农业农村部年鉴系列中的

一部重要产业年鉴，2002 年经农业农村部（原农业部）批准由中国奶业协会组织编纂，已经连

续出版二十卷，其中2012卷、2017卷、2021卷分别获第五届年鉴编纂出版质量评比综合二等奖、

第六届年鉴编纂出版质量评比综合一等奖、第九届全国地方志优秀成果（年鉴类）专业年鉴三

等奖。2022 卷为第二十一卷。

　　《中国奶业年鉴》自出版发行以来，客观记述了我国奶业的发展历程，反映了奶业生产的实际情

况，为行业管理部门制定规划、政策和实施决策提供了依据，为奶业生产经营者提供了技术和数据支

持，为广大消费者提供了市场和信息引导，是中国奶业发展的编年史册，也是奶业行业发展的公报。

　　行业数据主要采用国家统计局、海关总署、国家发展和改革委员会的统计数据，部分数据

资料由农业农村部畜牧兽医局、全国畜牧总站和中国奶业协会等单位提供。2022 卷所刊载资料

一般截至2021 年年底，部分时效性较强的资料不限于2021 年。

《中国奶业年鉴（2022 卷）》

出版时间：2024 年3 月　定价：580.00

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67

2024·10

Abstract:The purpose of this study was to compare the yield and nutrient composition of different varieties of Italian

ryegrass planted in the beef cattle breeding base in Ma Guan County, and to select the best varieties to meet the

demand for pasture grasses in the local beef cattle breeding base. Four varieties of Italian ryegrass, namely Dalaoban,

Adena, Zuanshi T and Tegao, were selected for planting trials. The pasture was mowed to measure the yield when it

grew to the point that most of the leaves were green after irrigation and before summer sowing. Samples were taken

for nutrient composition analysis.The results showed that dry yield of Dalaoban was significantly higher than Adena

( P<0.05); crude protein yield and net energy of gain (NEg) of Tegao were significantly higher than those of Adena

and Dalaoban ( P<0.05); dry matter (DM) content was significantly ( P<0.05) different among varieties; crude fat (EE)

content of Zuanshi T was significantly higher than that of Dalaoban ( P<0.05); crude ash (Ash) of Tegao content

was significantly higher ( P<0.05) than Dalaoban, Zuanshi T and Adena;Tegao crude protein (CP), phosphorus (P)

and neutral detergent insoluble protein (NDICP) contents were significantly higher than the other varieties (P<0.05);

calcium (Ca), neutral detergent fibre (NDF), acid detergent fibre (ADF), acid detergent insoluble protein (ADICP),

lignin (ADL), and acid insoluble ash (AIA) contents were significantly higher in Dalaoban, Adena, and Zuanshi T

than in Tegao ( P<0.05 ).The digestive energy (DE) of the four varieties of Italian ryegrass in this experiment ranged

from 2.69 to 3.08 Mcal/kg, metabolisable energy (ME) from 2.26 to 2.67 Mcal/kg, net energy for maintenance (NEm)

from 1.40 to 1.75 Mcal/kg, and net energy for weight gain (NEg) from 0.81 to 1.13 Mcal/kg. It was found that the

Italian ryegrass variety suitable for cultivation in Maguan County was Tegao, followed by Zuanshi T in terms of mu

yield, nutrient content and energy as a comprehensive evaluation index.

Key words: Italian ryegrass; Yield; Nutritional composition; Energy