[1] 马国兰.浅谈青海的牦牛资源现状及保护措施[J].中国牛业科学,2014,40(3):89-91. MA G L.Resource status and protections of yaks in
Qinghai[J].China Cattle Science,2014,40(3):89-91.(in Chinese)
[2] LONG R J,DING L M,SHANG Z H,et al.The yak grazing system on the
Qinghai-Tibetan plateau and its status[J].Rangeland Journal,2008,30(2):241-246.

[3] 朱国兴,张云玲.浅谈我国牦牛业生产现状及发展思路[J].中国畜牧杂志,2005,41(1):61-63. ZHU G X,ZHANG Y L.Production status and development of yak industry in China[J].Chinese Journal of Animal Science,2005,41(1):61-63.(in Chinese)
[4] AMBURGH M V,SOBERON F,曹志军,等.犊牛营养与管理对其终生生产性能的影响[J].中国奶牛,2016(2):45-50. AMBURGH M V,SOBERON F,CAO Z J,et al.Effects of calf nutrition and management on its lifetime production performance[J].China Dairy Cattle,2016(2):45-50.(in Chinese)
[5] 吴发莉.不同区域和季节对高寒天然牧草品质的影响[D].硕士学位论文.雅安:四川农业大学,2014:10-11. WU F L.Effects of different areas and seasons on the quality of the native forage grass from high-cold steppes[D].Master's Thesis.Ya'an:Sichuan Agricultural University,2014:10-11.(in Chinese)
[6] 姬秋梅,达娃央拉,张成福,等.西藏牦犊牛早期生长发育潜力研究[J].草食家畜,2010(4):54-57. JI Q M,DAWAYANGLA,ZHANG C F,et al.Study on potential growth of yak calves in Tibet[J].Grass-Feeding Livestock,2010(4):54-57.(in Chinese)
[7] DING L M,WANG Y P,BROSH A,et al.Seasonal heat production and energy balance of grazing yaks on the
Qinghai-Tibetan plateau[J].Animal Feed Science and Technology,2014,198:83-93.
[8] 刘利勇.僵牛的产生与防治[J].山东畜牧兽医,2019,40(7):40-41. LIU L Y.The production and prevention of calves with growth retardation[J].Shandong Journal of Animal Science and Veterinary Medicine,2019,40(7):40-41.(in Chinese)
[9] LEE H J,KHAN M A,LEE W S,et al.Influence of equalizing the gross composition of milk replacer to that of whole milk on the performance of Holstein calves[J].Journal of Animal Science,2009,87(3):1129-1137.

[10] WIENER G,HAN J L,LONG R J.The yak[M].2nd ed.Bangkok:Regional Office for Asia and the Pacific Food and Agriculture Organization of the United Nations,2003:74.
[11] 李亮,吴克选,刘书杰.高原犊牦牛培育的研究现状与进展[J].中国畜牧兽医,2009,36(6):196-198. LI L,WU K X,LIU S J.Proceeding of study on yak calves (
Bos grunniens) on
Qinghai-Tibet plateau[J].China Animal Husbandry & Veterinary Medicine,2009,36(6):196-198.(in Chinese)
[12] 张国庆.全哺乳和限制哺乳对牦牛犊牛生长发育的影响[J].中国畜牧兽医,2008,35(10):126-127. ZHANG G Q.Effects of total and restricted lactation on growth and development of yak calves[J].China Animal Husbandry & Veterinary Medicine,2008,35(10):126-127.(in Chinese)
[13] 朱彦宾,巴桑旺堆,旦久罗布,等.早期断奶对犊牛生产性能和母牦牛繁殖性能的影响[J].基因组学与应用生物学,2019,38(1):89-92. ZHU Y B,BASANGWANGDUI,DANJIULUOBU,et al.Effects of early weaning on production performance of calf and the reproductive performance of female yaks[J].Genomics and Applied Biology,2019,38(1):89-92.(in Chinese)
[14] 马涛,崔凯,张成福,等.不同培育模式对牦牛犊牛生长性能、瘤胃发酵参数和血清生化指标的影响[J].动物营养学报,2021,33(4):2055-2062. MA T,CUI K,ZHANG C F,et al.Effects of different feeding modes on growth performance,rumen fermentation parameters and serum biochemical indices of yak calves[J].Chinese Journal of Animal Nutrition,2021,33(4):2055-2062.(in Chinese)
[15] 鲍宇红,宋天增,冯柯,等.不同蛋白质水平代乳粉对牦犊牛体重及血清生化指标的影响[J].中国农业大学学报,2020,25(5):78-85. BAO Y H,SONG T Z,FENG K,et al.Effects of different protein levels of milk replacer on the body weight and serum biochemical indexes of yak calves[J].Journal of China Agricultural University,2020,25(5):78-85.(in Chinese)
[16] CUI Z H,WU S R,LIU S J,et al.From maternal grazing to barn feeding during pre-weaning period:altered gastrointestinal microbiota contributes to change the development and function of the rumen and intestine of yak calves[J].Frontiers in Microbiology,2020,11:485.
[17] 华着,赵索南.用代乳粉替代全乳饲喂牦牛犊的试验研究[J].青海畜牧兽医杂志,2018,48(4):28-30. HUA Z,ZHAO S N.Research of feed with milk replacer substituting for whole milk on plateau yak calves in
Haibei[J].Chinese Qinghai Journal of Animal and Veterinary Sciences,2018,48(4):28-30.(in Chinese)
[18] 鲍宇红,冯柯,廖阳慈,等.不同脂肪水平代乳粉对犊牦牛生长性能、血清免疫及抗氧化指标的影响[J].动物营养学报,2020,32(12):5704-5711. BAO Y H,FENG K,LIAO Y C,et al.Effects of milk replacer with different fat levels on growth performance,serum immunity and antioxidant indexes of yak calves[J].Chinese Journal of Animal Nutrition,2020,32(12):5704-5711.(in Chinese)
[19] 杨什布加,赵索南,柴沙驼,等.饲喂代乳粉对早期断奶犊牦牛生长性能的影响及经济效益分析[J].中国畜牧杂志,2017,53(12):89-92. YANG S B J,ZHAO S N,CHAI S T,et al.Effect of feeding milk replacer powder on growth performance and economic benefit of early weaned yaks[J].Chinese Journal of Animal Science,2017,53(12):89-92.(in Chinese)
[20] BEHARKA A A,NAGARAJA T G,MORRILL J L,et al.Effects of form of the diet on anatomical,microbial,and fermentative development of the rumen of neonatal calves[J].Journal of Dairy Science,1998,81(7):1946-1955.

[21] ŽITNAN R,VOIGT J,SCHÖNHUSEN U,et al.Influence of dietary concentrate to forage ratio on the development of rumen mucosa in calves[J].Archiv Für Tierernaehrung,1998,51(4):279-291.

[22] MIRZAEI M,KHORVASH M,GHORBANI G R,et al.Effects of supplementation level and particle size of alfalfa hay on growth characteristics and rumen development in dairy calves[J].Journal of Animal Physiology and Animal Nutrition,2015,99(3):553-564.

[23] BHATTI S A,AHMED M F,WYNN P C,et al.Effect of diet on preweaning performance of Sahiwal calves[J].Tropical Animal Health and Production,2012,44(4):819-826.

[24] HILL T M,BATEMAN H G,ALDRICH J M,et al.Effects of the amount of chopped hay or cottonseed hulls in a textured calf starter on young calf performance[J].Journal of Dairy Science,2008,91(7):2684-2693.

[25] BLOME R M,DRACKLEY J K,MCKEITH F K,et al.Growth,nutrient utilization,and body composition of dairy calves fed milk replacers containing different amounts of protein[J].Journal of Animal Science,2003,81(6):1641-1655.

[26] MARTIN C,FERLAY A,MOSONI P,et al.Increasing linseed supply in dairy cow diets based on hay or corn silage:effect on enteric methane emission,rumen microbial fermentation,and digestion[J].Journal of Dairy Science,2016,99(5):3445-3456.

[27] KHAN M A,WEARY D M,VON KEYSERLINGK M A G.Hay intake improves performance and rumen development of calves fed higher quantities of milk[J].Journal of Dairy Science,2011,94(7):3547-3553.

[28] 王晓玲,李秋凤,曹玉凤,等.不同代乳品及饲喂方式对荷斯坦奶公犊生产犊牛白肉影响的研究[J].中国畜牧兽医,2015,42(8):2020-2027. WANG X L,LI Q F,CAO Y F,et al.Study on production of white veal with Holstein bull calves fed on different milk replacer and feeding methods[J].China Animal Husbandry & Veterinary Medicine,2015,42(8):2020-2027.(in Chinese)
[29] 崔占鸿.牦牛犊牛培育方式对生长和消化道发育的影响[D].博士学位论文.杨凌:西北农林科技大学,2020. CUI Z H.Effects of rearing patterns on growth and digstive tract development in yak calves[D].Ph.D.Thesis.Yangling:Northwest A&F University,2020.(in Chinese)
[30] 鲍宇红,普布卓玛,罗增,等.补饲和饮水温度对春季半舍饲牦牛生长性能的影响[J].黑龙江畜牧兽医,2021(2):141-144,161. BAO Y H,PUBUZHUOMA,LUO Z,et al.Effects of supplementation feeding and drinking water temperature on growth performance of semi-housed yaks in spring[J].Heilongjiang Animal Science and Veterinary Medicine,2021(2):141-144,161.(in Chinese)
[31] 陈翠琼.牦牛犊牛腹泻病因及防治[J].畜牧兽医科学(电子版),2020(21):75-76. CHEN C Q.Etiology and prevention of diarrhea in yak calves[J].Graziery Veterinary Sciences (Electronic Version),2020(21):75-76.(in Chinese)
[32] 柏雪,郭春华,刘少文,等.青藏高原部分地区牦牛与黄牛源沙门氏菌的分离鉴定与药敏实验[J].食品工业科技,2017,38(2):196-199,204. BAI X,GUO C H,LIU S W,et al.Study on the serovar and antibiotic resistance of yak and cattle salmonella from some areas of
Qinghai-Tibetan plateau[J].Science and Technology of Food Industry,2017,38(2):196-199,204.(in Chinese)
[33] XICCATO G,TROCINO A,QUEAQUE P I,et al.Rearing veal calves with respect to animal welfare:effects of group housing and solid feed supplementation on growth performance and meat quality[J].Livestock Production Science,2002,75(3):269-280.

[34] 任春燕.不同NDF水平的开食料对犊牛生长、屠宰性能、抗氧化、免疫及胃肠道发育的影响[D].博士学位论文.兰州:甘肃农业大学,2018. REN C Y.Study on effects of starter diets with different NDF level on growth,slaughter performance,antioxidant,immune and gastrointestinal development in calves[D].Ph.D.Thesis.Lanzhou:Gansu Agricultural University,2018.(in Chinese)
[35] WU S R,CHEN X D,LI J L,et al.Effect of alfalfa hay and starter feed supplementation on caecal microbiota and fermentation,growth,and health of yak calves[J].Animal,2021,15(3):100019.
[36] MALMUTHUGE N,LI M J,GOONEWARDENE L A,et al.Effect of calf starter feeding on gut microbial diversity and expression of genes involved in host immune responses and tight junctions in dairy calves during weaning transition[J].Journal of Dairy Science,2013,96(5):3189-3200.

[37] 杜梅,梁泽毅,张剑搏,等.反刍动物肠道菌群与宿主肠道黏膜免疫互作及其调控研究进展[J].动物营养学报,2021,33(5):2483-2494. DU M,LIANG Z Y,ZHANG J B,et al.Recent advances on interaction and regulation between intestinal microflora and host mucosal immune system of ruminants[J].Chinese Journal of Animal Nutrition,2021,33(5):2483-2494.(in Chinese)
[38] CUI Z H,WU S R,LI J L,et al.Effect of alfalfa hay and starter feeding intervention on gastrointestinal microbial community,growth and immune performance of yak calves[J].Frontiers in Microbiology,2020,11:994.
[39] 彭巍,张君,徐尚荣.高寒牧区牦牛犊腹泻病防治技术规程[J].青海畜牧兽医杂志,2014,44(1):22-23. PENG W,ZHANG J,XU S R.Prevention and control technology procedures on diarrhea disease of calf in alpine pastoral areas[J].Chinese Qinghai Journal of Animal and Veterinary Sciences,2014,44(1):22-23.(in Chinese)