BALDWIN R L,MCLEOD K R,KLOTZ J L,et al.Rumen development,intestinal growth and hepatic metabolism in the pre- and post-weaning ruminant[J].Journal of Dairy Science,2004,87:E55-E65.
[2]
MENTSCHEL J,LEISER R,MVLLING C,et al.Butyric acid stimulates rumen mucosa development in the calf mainly by a reduction of apoptosis[J].Archiv für Tierernaehrung,2001,55(2):85-102.
[3]
KONE P,MACHADO P F,COOK R M.Effect of the combination of monensin and isoacids on rumen fermentation in vitro[J].Journal of Dairy Science,1989,72(10):2767-2771.
[4]
WANG C,LIU Q,PEI C X,et al.Effects of 2-methylbutyrate on rumen fermentation,ruminal enzyme activities,urinary excretion of purine derivatives and feed digestibility in steers[J].Livestock Science,2012,145(1/2/3):160-166.
[5]
YANG C M J.Response of forage fiber degradation by ruminal microorganisms to branched-chain volatile fatty acids,amino acids,and dipeptides[J].Journal of Dairy Science,2002,85(5):1183-1190.
[6]
LIU Q,WANG C,PEI C X,et al.Effects of isovalerate supplementation on microbial status and rumen enzyme profile in steers fed on corn stover based diet[J].Livestock Science,2014,161:60-68.
[7]
MAO H L,WU C H,WANG J K,et al.Synergistic effect of cellulase and xylanase on in vitro rumen fermentation and microbial population with rice straw as substrate[J].Animal Nutrition and Feed Technology,2013,13:477-487.
[8]
LAMID M,PUSPANINGSIH N N T,MANGKOEDIHARDJO S.Addition of lignocellulolytic enzymes into rice straw improves in vitro rumen fermentation products[J].Journal of Applied Environmental and Biological Sciences,2013,3(9):166-171.
[9]
MOHAMED D E D A,BORHAMI B E,EL-SHZALY K A,et al.Effect of dietary supplementation with fibrolytic enzymes on the productive performance of early lactating dairy cows[J].Journal of Agricultural Science,2013,5(6):146-155.
[10]
JACOBSON D R,LINDAHL I L,MCNEILL J J,et al.Feedlot bloat studies.Ⅱ.Physical factors involved in the etiology of frothy bloat[J].Journal of Animal Science,1957,16:515-524.
[11]
CHANEY A L,MARBACH E P.Modified reagents for determination of urea and ammonia[J].Clinical Chemistry,1962,8(2):130-132.
[12]
YU Z T,MORRISON M.Improved extraction of PCR-quality community DNA from digesta and fecal samples[J].BioTechniques,2004,36(5):808-812.
[13]
QUISPE M E,BARRADAS H,COOK R M.Effects of isoacids,urea and sulfur on ruminal fermentation in sheep fed pineapple tops[J].Small Ruminant Research,1991,6(1/2):49-54.
[14]
RUSSELL J B,O''CONNOR J D,FOX D G,et al.A net carbohydrate and protein system for evaluating cattle diets:Ⅰ.Ruminal fermentation[J].Journal of Animal Science,1992,70(11):3551-3561.
[15]
SHOJAEIAN K,THAKUR S S.Effect of supplementing isobutyrate and fibrolytic enzymes on in vitro degradibility of alkali treated wheat straw[J].Indian Journal of Animal Nutrition,2006,23(4):213-217.
[16]
LANE M A,BALDWIN R L,JESSE B W.Sheep rumen metabolic development in response to age and dietary treatments[J].Journal of Animal Science,2000,78(7):1990-1996.
[17]
COLOMBATTO D,HERVáS G,YANG W Z,et al.Effects of enzyme supplementation of a total mixed ration on microbial fermentation in continuous culture,maintained at high and low pH[J].Journal of Animal Science,2003,81(10):2617-2627.
[18]
BEAUCHEMIN K A,COLOMBATTO D,MORGAVI D P,et al.Use of exogenous fibrolytic enzymes to improve feed utilization by ruminants[J].Journal of Animal Science,2003,81(2S):E37-E47.
