杜长

28头体重在10kg左右杜长约三元杂交瘦肉型猪随机分成4组，每组7头。

28 lean pigs ( Duroc × Landrace × Yorkshire ) at about 10 kg BW were randomly asigned to one of 4 groups with 7 pigs each .

牡丹江市杜长约（杜约长）三元杂交猪繁育体系的研究

The Study on Duroc × Landrace × Yorkshire ( or DYL ) of Swine Breeding System in Mudanjiang City

选用120头体质健康的三元杂交（杜×长×大）生长猪，平均体重为（34.7±5.1）kg，随机分为5组，每组4个重复，每个重复6头。

120 healthy three-way crossed growing-finishing pigs with a body weight of 34.7 ± 5.1 kg were selected and divided into 5 groups , each with 4 duplications , and each duplication had 6 pigs .

选择72头35±1日龄、平均断奶体重（10.33±0.34）kg的健康三元（杜×长×大）杂交仔猪，按体重和性别分成4个处理组，每处理组3个重复。

A total of 72 crossed piglets ( Duroc × Landrace × Large White ) with 35 ± 1 days of age ,( 10.33 ± 0.34 ) kg BW were divided into 4 groups , with 3 replicates per treatment by weight and gender .

选用15kg左右的杜×长×大或杜×大×长三元杂交瘦肉型小猪70头，分成5个组，设2个对照组及3个试验组。

Three-way cross bacon type pigs with starting weight 15 kg of Duroc × Landrace × Large White or Duroc × Large White × Landrace were randomly divided into five groups . There were two control groups and three experiment groups .

为试验SSTR疫苗对肉猪促生长及血浆相关激素的影响，30头体重相近的杜×长×梅三元杂交猪随机分成试验组（SSTR疫苗组）和对照组（生理盐水组）。

To investigate the effect of SSTR vaccine on growth performance and relevant hormone in plasma , thirty cross-breed ( Durol × landrace × Meishan ) growing pigs with similar weight were randomly divided into experimental group ( SSTR vaccine group ) and control group ( saline group ) .

杜×长×大生长育肥猪体蛋白沉积模型及氨基酸需要量预测的研究

Modeling protein accretion and amino acids requirement in Duroc × Landrace × Yorkshire cross-bred growing-finishing pigs

选择体重15.0kg左右的仔猪（杜×长×大）48头，随机分成2组，每组3个重复，每个重复8头。

Forty-eight piglets ( Duroc × Landrace × Large white ) weighing about 15 kg were assigned to 2 groups randomly , each with three replicates of 8 piglets .

采用2个3×3拉丁方设计，选用6头杜×长×大阉公猪测定了仔猪对纤维来源和水平不同的日粮的消化率。

In an experiment with two 3 × 3 Latin square design , six Duroc × Langdrance × Largewhite castrates were used to investigate the effects of dietary fiber sources and level on nutrient digestibility and utilization in piglets .

以72头平均体重（5.06±0.49）kg的21日龄杜×大×长断奶仔猪为研究对象，探讨了日粮添加金霉素对肠道核因子NF-κB活化的影响。

Seventy-two piglets ( Duroc × Large White × Landrace ) weaned at 21 days weighting ( 5.06 ± 0.49 ) kg were used to study the effects of chlortetracycline on the activity of intestinal nuclear factor NF - κ B for a period of 15 days .

试验一，采用单因子随机区组设计，选用平均断奶体重8.1kg的三元杂交（杜×大×长）仔猪90头，随机分为5个处理。

1 , 90 piglets with initial BW of 8.1 kg were fed one of five diets in a randomized block design for 28d .