英语翻译1123 Eect of amount and source of protein supplementedto grazing dairy cows on ruminal fermentation andin situ crude protein degradation characteristics.F.Bargo*and D.H.Rearte,Fac.Cs.Agrarias.UNMDP - EEA INTA Balcarce,Argentina.Six Holste

英语翻译1123 Eect of amount and source of protein supplementedto grazing dairy cows on ruminal fermentation andin situ crude protein degradation characteristics.F.Bargo*and D.H.Rearte,Fac.Cs.Agrarias.UNMDP - EEA INTA Balcarce,Argentina.Six Holste
英语翻译
1123 Eect of amount and source of protein supplemented
to grazing dairy cows on ruminal fermentation and
in situ crude protein degradation characteristics.F.Bargo*
and D.H.Rearte,Fac.Cs.Agrarias.UNMDP - EEA INTA Balcarce,
Argentina.
Six Holstein cows ruminally cannulated were used in a double 3 x 3
Latin square with 15 day-periods to study the effect of different protein
supplementations to grazing cows on ruminal fermentation and in situ
CP degradation characteristics.Sunflower meal (SM) and feather meal
(FM) were used as high and low rumen degradability protein sources,
respectively.Treatments consisted of three different concentrates:low
CP - SM (L-SM),high CP - SM (H-SM),and high CP - FM (H-FM).
All cows grazed a winter oats pasture (Avena sativa L.) with 2310 DM
kg/ha availability,14.2% CP,33.6% NDF and 82.2% in vitro DM digestibility
for 8 wk.L-SM,H-SM and H-FM concentrates had 15.3%,
23.3% and 24.6% CP,respectively.Contrasts were L vs H and SM vs
FM.Total DMI,estimated using Cr2O3 as a fecal marker,was similar
among treatments (P > 0.05).Neither pH nor total VFA concentration
in ruminal fluid were affected by treatments (P > 0.05).Both L-SM and
H-FM presented lower NH3-N ruminal concentration than H-SM (P 0.05),
but a source of low rumen degradability decreased degradable fraction,
degradation rate and effective degradability of CP (EDCP) (P < 0.05).
Item L-SM H-SM H-Fm SEM L vs H,P < SM vs FM,P

英语翻译1123 Eect of amount and source of protein supplementedto grazing dairy cows on ruminal fermentation andin situ crude protein degradation characteristics.F.Bargo*and D.H.Rearte,Fac.Cs.Agrarias.UNMDP - EEA INTA Balcarce,Argentina.Six Holste
1123年的数量和补充蛋白源Eect
对瘤胃发酵和放牧奶牛
原位粗蛋白降解特性.楼Bargo *
和劳伦斯雷亚尔特,外交事务委员会.铯.Agrarias.UNMDP -欧洲商标协会巴尔卡塞,
阿根廷.
六空心荷斯坦奶牛瘤胃中使用了双重的3 × 3
拉丁方的15天,期间,研究不同蛋白质的影响
对瘤胃发酵和就地放牧奶牛补剂
处长退化特征.向日葵餐（SM）和羽毛粉
（调频）作为高,低瘤胃降解蛋白源,
分别.三种不同的治疗方法包括集中：低
处长- SM调（长- SM）的,高处长- SM调（高- SM）的,高处长-调频（高调频）.
所有牛放牧与2310德国马克冬季燕麦草（燕麦湖）
公斤/公顷床位,处长14.2％,33.6％,NDF与体外消化率为82.2％糖尿病
为8周.蜇钐,ħ钐和H -调频集中了15.3％,
23.3％和24.6％处长分别.对比了L和H和钐队
调频.总步操及枪械教官,估计使用粪便作为标记铬,类似
处理间性（P“0.05）.无论pH值也总挥发性脂肪酸浓度
在瘤胃液体受到影响,治疗性（P“0.05）.既有L - SM和
ħ调频提出降低NH3 - N的浓度瘤胃高于H -钐性（P“
0.05）.瘤胃消化特点,利用该模型估计
对Orskov和麦当劳（1979年）.数额没有蛋白质的补充
不得修改集中瘤胃消化分数处长性（P“0.05）,
但瘤胃的降解率低,可降解的一小部分源减少,
降解率和有效率CP的降解（EDCP）性（P“0.05）.
项目L -钐ħ钐ħ调频扫描电镜L比小时,P“钐队调频,P”
pH值5.5 5.5 5.5 0.02 0.83 0.47
氨氮,毫克/分升21.1 28.5 19.3 1.67 0.04 0.05
挥发性脂肪酸,mmol / L的129.2 133.9 127.6 3.89 0.44 0.45
集中处长
可溶性,％39.7 40.8 42.4 4.1 0.86 0.69
可降解,％53.6 55.4 38.6 4.9 0.80 0.05
率,％/小时8.6 10.9 5.1 1.6 0.26 0.002
EDCP（kp1 = 7％/小时）68.8 74.5 58.4 2.3 0.16 0.01