[1] LONG R J,ZHANG D G,WANG X,et al.Effect of strategic feed supplementation on productive and reproductive performance in yak cows[J].Preventive Veterinary Medicine,1999,38(2/3):195-206.
[2] 龙瑞军.藏民农户中传统饲养管理条件下牦牛的产奶性能[J].草业学报,1994,3(1):71-76. LONG R J.Milk performance of yak cows under traditional feeding and management on small Tibetan farms[J].Acta Prataculturae Sinica,1994,3(1):71-76.(in Chinese)
[3] 崔光欣.青藏高原高寒植物及牦牛奶抗氧化特性研究[D].博士学位论文.兰州:兰州大学,2016:57-65. CUI G X.Antioxidant property of alpine plants and yak milk on
Qinghai-Tibetan plateau[D].Ph.D.Thesis.Lanzhou:Lanzhou University,2016:57-65.(in Chinese)
[4] MI J D,ZHOU J W,DING L M,et al.Short communication:changes in the composition of yak colostrum during the first week of lactation[J].Journal of Dairy Science,2016,99(1):818-824.
[5] LI H M,YING M,LI Q M,et al.The chemical composition and nitrogen distribution of Chinese yak (
Maiwa) milk[J].International Journal of Molecular Sciences,2011,12(8):4885-4895.
[6] DING L M,WANG Y P,KREUZER M,et al.Seasonal variations in the fatty acid profile of milk from yaks grazing on the
Qinghai-Tibetan plateau[J].Journal of Dairy Research,2013,80(4):410-417.
[7] 李永,于志鹏,姚军虎,等.改善高产奶牛泌乳初期能量供应的综合调控措施[J].动物营养学报,2020,32(3):1047-1055. LI Y,YU Z P,YAO J H,et al.Comprehensive regulation of energy supply for high yield ruminants in early lactation[J].Chinese Journal of Animal Nutrition,2020,32(3):1047-1055.(in Chinese)
[8] 龙瑞军.高山草原放牧牦牛血清中几种营养代谢物的季节动态[D].博士学位论文.兰州:甘肃农业大学,1995:18-21. LONG R J.Seasonal dynamics of several nutrient metabolites in serum of alpine grassland grazing yaks[D].Ph.D.Thesis.Lanzhou:Gansu Agricultural University,1995:18-21.(in Chinese)
[9] NRC.Nutrient requirements of dairy cattle[S].7th ed.Washington,D.C.:National Academy of Science,2001
[10] WANG C,LIU H Y,WANG Y M,et al.Effects of dietary supplementation of methionine and lysine on milk production and nitrogen utilization in dairy cows[J].Journal of Dairy Science,2010,93(8):3661-3670.
[11] 王虎成,赵志伟,周恩光.高寒草甸暖季牧场泌乳期牦牛氨基酸营养初探[J].草业科学,2019,36(7):1897-1907. WANG H C,ZHAO Z W,ZHOU E G.A preliminary study on amino acid nutrition requirements of lactating yak grazing in a warm season pasture in alpine meadows[J].Pratacultural Science,2019,36(7):1897-1907.(in Chinese)
[12] 熊本海,罗清尧,周正奎,等.中国饲料成分及营养价值表(2019年第30版)[J].中国饲料,2019(22):111-116. XIONG B H,LUO Q Y,ZHOU Z K et al.Chinese feed ingredients and nutritional value table (30th ed,2019)[J].China Feed,2019(22):111-114.(in Chinese)
[13] VAN SOEST P J,ROBERTSON J B,LEWIS B A.Methods for dietary fiber,neutral detergent fiber,and nonstarch polysaccharides in relation to animal nutrition[J].Journal of Dairy Science,1991,74(10):3583-3597.
[14] 郝力壮.牦牛暖季补饲对改善肉品质的作用及机理研究[D].博士学位论文.兰州:兰州大学,2019:13-71. HAO L Z.Effect of supplementary feeding in warm season on meat quality of yaks and underlying mechanisms[D].Ph.D.Thesis.Lanzhou:Lanzhou University,2019:13-71.(in Chinese)
[15] ZI X D.Reproduction in female yaks (
Bos grunniens) and opportunities for improvement[J].Theriogenology,2003,59(5/6):1303-1312.
[16] HEUBLEIN C,DOHME-MEIER F,SÜDEKUM K H,et al.Impact of cow strain and concentrate supplementation on grazing behaviour,milk yield and metabolic state of dairy cows in an organic pasture-based feeding system[J].Animal,2017,11(7):1163-1173.
[17] 朗杰.改善饲牧条件提高牦牛杂交改良的经济效益[J].中国牦牛,1987(3):49-50. LANG J.Improving the feeding and pasturing conditions and increasing the economic benefits of the cattle hybridization[J].China Yak,1987(3):49-50.(in Chinese)
[18] 文勇立,赵佳琦.牦牛的泌乳量测定及其乳特性[J].中国乳业,2019(11):12-18. WEN L Y,ZHAO J Q.The milk production of yak and its milk characteristics[J].China Dairy,2019(11):12-18.(in Chinese)
[19] 杨光宗,郭红宝,刘培培,等.补饲精料补充料对半舍饲牦牛生产性能的影响[J].高原科学研究,2018,2(3):27-32,60. YANG G Z,GUO H B,LIU P P,et al.Effect of supplying concentrated supplementary feed on the production performance of semi-confinement yak[J].Plateau Science Research,2018,2(3):27-32,60.(in Chinese)
[20] LEE C,GIALLONGO F,HRISTOV A N,et al.Effect of dietary protein level and rumen-protected amino acid supplementation on amino acid utilization for milk protein in lactating dairy cows[J].Journal of Dairy Science,2015,98(3):1885-1902.
[21] 韩兆玉.过瘤胃蛋氨酸对奶牛夏季生产性能及淋巴细胞凋亡调控的影响[D].博士学位论文.南京:南京农业大学,2007:27-32. HAN Z Y.The effect of rumen protected methionine on performances and apoptotic regulation of lymphocyte of dairy cows in summer[D].Ph.D.Thesis.Nanjing:Nanjing Agricultural University,2007:27-32.(in Chinese)
[22] 邹阿玲,孙国军,李明强,等.过瘤胃蛋氨酸对泌乳早期奶牛生产性能的影响[J].中国奶牛,2005(2):27-29. ZOU A L,SUN G J,LI M Q,et al.Effect of rumen bypass methionine on production performance of dairy cows in early lactation[J].Chinese Dairy Cattle,2005(2):27-29.(in Chinese)
[23] 殷满财,马进寿,刘更寿,等.哺乳期母牦牛补饲提高连产率试验[J].中国畜禽种业,2019,15(12):88-89. YIN M C,MA J S,et al.The experiment of supplementary feeding of female yak in lactation to increase continuous production rate[J].The Chinese Livestock and Poultry Breeding,2019,15(12):88-89.(in Chinese)
[24] 张昌吉,张勇,郭武君,等.甘肃高山细毛羊母羊妊娠后期补饲效果研究[J].草业学报,2017,26(7):106-115. ZHANG C J,ZHANG Y,GUO W J,et al.Effect of supplementary feeding in late pregnancy on
Gansu alpine fine-wool ewes[J].Acta Prataculturae Sinica,2017,26(7):106-115.(in Chinese)
[25] 谢荣清,郑群英,罗光荣.麦洼牦牛暖季补饲育肥效果研究[J].草食家畜,2004(4):56-58. XIE R Q,ZHENG Q Y,LUO G R.Finishing effect of
Maiwa yak by feed in warm season[J].Grass-Feeding Livestock,2004(4):56-58.(in Chinese)
[26] 韩正康.家畜生理学[M].3版.北京:中国农业出版社,1998:15-19. HAN Z K.Livestock physiology[M].3th ed.Beijing:China Agricultural Publishing,1998:15-19.(in Chinese)
[27] 张娇娇.饲用缓释尿素对后备奶牛和肉牛体外瘤胃发酵参数、生长性能和血液指标的影响[D].硕士学位论文.兰州:兰州大学,2018:30-40. ZHANG J J.Effects of dietary slow-release urea supplementation on
in vitro rumen fermentation,growth performance and serum parameters in dairy heifers and beef cattle[D].Master,s Thesis.Lanzhou:Lanzhou University,2018:30-40.(in Chinese)
[28] 袁青妍,谢庄.动物对高原低氧的适应性研究进展[J].生理科学进展,2005,36(2):179-182. YUAN Q Y,XIE Z.Research progress on animal adaptability to high altitude hypoxia[J].Progress in Physiological Sciences,2005,36(2):179-182.(in Chinese)
[29] 张成喜,刘吉山,孙国强.过瘤胃蛋氨酸对奶牛血液生化指标和养分消化率的影响[J].中国饲料,2017(16):20-23. ZAHNG C X,LIU J S,SUN G Q.Effect of rumen-protected methionine (RPMet) on blood biochemical parameter and nutrient digestibility of dairy cows[J].China Feed,2017(16):20-23.(in Chinese)
[30] 滕水昌,张敏,滕杰,等.1951-2016年甘肃乌鞘岭气候变化特征[J].干旱气象,2018,36(1):75-81,129. TENG S C,ZHANG M,TENG J,et al.Climate change characteristics in
Wushaoling region of Gansu province during 1951-2016[J].Journal of Arid Meteorology,2018,36(1):75-81.(in Chinese)
[31] HIGGS R J,SHEAHAN A J,MANDOK K,et al.The effect of starch-,fiber-,or sugar-based supplements on nitrogen utilization in grazing dairy cows[J].Journal of Dairy Science,2013,96(6):3857-3866.
[32] 李莉,张佩华,凌浩,等.过瘤胃蛋氨酸对奶山羊产奶性能和血清生化指标的影响[J].动物营养学报,2019,31(8):3898-3904. LI L,ZHANG P H,LING H,et al.Effects of rumen protected methionine on milk performance and serum biochemical indexes of milk goat[J].Chinese Journal of Animal Nutrition,2019,31(8):3898-3904.(in Chinese)
[33] 王菲,韩娥,任金朋,等.低蛋白质水平饲粮添加过瘤胃蛋氨酸对黔北麻羊生长性能、养分消化率、血浆生化和抗氧化指标及瘤胃发酵参数的影响[J].动物营养学报,2020,32(3):1262-1271. WANG F,HAN E,REN J P,et al.Effects of rumen-protected methionine supplementation in low protein level diet on growth performance,nutrient digestibilities,plasma biochemical and antioxidant indexes and rumen fermentation parameters of
Qianbei brown goats[J].Chinese Journal of Animal Nutrition,2020,32(3):1262-1271.(in Chinese)
[34] 梁春宇,吴兆海,欧阳佳良,等.杂交构树青贮对泌乳前期奶牛生产性能、养分表观消化率和血清生化指标的影响[J].动物营养学报,2020,32(8):1-7. LIANG C Y,WU Z H,OUYANG J L,et al.Effects of paper mulberry silage on performance,nutrient apparent digestibility and serum biochemical indexes of early lactating dairy cows[J].Chinese Journal of Animal Nutrition,2020,32(8):1-7.(in Chinese)
[35] ESMAEILNEJAD B,TAVASSOLI M,SAMIEI A,et al.Evaluation of oxidative stress and antioxidant status,serum trace mineral levels and cholinesterases activity in cattle infected with
Anaplasma marginale[J].Microbial Pathogenesis,2018,123:402-409.
