中国畜牧兽医 ›› 2021, Vol. 48 ›› Issue (3): 982-990.doi: 10.16431/j.cnki.1671-7236.2021.03.022
宋真1, 赵善江2, 李来宝3, 许慧韬2, 朱化彬2
收稿日期:
2020-07-07
出版日期:
2021-03-20
发布日期:
2021-03-18
通讯作者:
朱化彬
E-mail:zhuhuabin@caas.cn
作者简介:
宋真(1976-),女,北京人,本科,从事畜牧技术推广工作,E-mail:17600480760@sina.cn
基金资助:
SONG Zhen1, ZHAO Shanjiang2, LI Laibao3, XU Huitao2, ZHU Huabin2
Received:
2020-07-07
Online:
2021-03-20
Published:
2021-03-18
摘要: 产犊间隔(calving internal,CI)又称胎间距,即两次产犊间的时间间隔,能够综合反映奶牛发情、配种、妊娠和产犊等繁殖性能,是衡量奶牛繁殖性能的一个重要指标,同时也是影响奶牛产奶量和产犊数量的重要因素,对奶牛养殖经济效益具有直接影响。最新研究显示,适宜产犊间隔与牛群泌乳能力相关,泌乳能力越高,适宜产犊间隔应越长。但是,即使中国规模化牛场产奶量已经有了大幅提升,中国大多数牧场还在追求更短的产犊间隔。为此,作者对影响荷斯坦奶牛产犊间隔的因素及其研究进展进行概述,并简要阐述了产犊间隔对牛场经济效益的影响,以期为中国荷斯坦奶牛养殖确定适宜产犊间隔提供一定的借鉴和理论依据。
中图分类号:
宋真, 赵善江, 李来宝, 许慧韬, 朱化彬. 影响荷斯坦奶牛产犊间隔的因素及其研究进展[J]. 中国畜牧兽医, 2021, 48(3): 982-990.
SONG Zhen, ZHAO Shanjiang, LI Laibao, XU Huitao, ZHU Huabin. Impact Factors and Its Research Progress of Calving Interval in Holstein Dairy Cows[J]. China Animal Husbandry and Veterinary Medicine, 2021, 48(3): 982-990.
[1] INCHAISRI C,JORRITSMA R,VOS P L A M,et al.Economic consequences of reproductive performance in dairy cattle[J].Theriogenology,2010,74(5):835-846. [2] NORMAN H D,WRIGHT J R,HUBBARD S M,et al.Reproductive status of Holstein and Jersey cows in the United States[J].Journal of Dairy Science,2009,92(7):3517-3528. [3] LUCY M C.Reproductive loss in high-producing dairy cattle:Where will it end?[J].Journal of Dairy Science,2001,84(6):1277-1293. [4] DOBSON H,SMITH R F,ROYAL M D,et al.The high-producing dairy cow and its reproductive performance[J].Reproduction in Domestic Animals,2007,42(Suppl.2):17-23. [5] NIEUWHOF G J,POWELL R L,NORMAN H D.Ages at calving and calving intervals for dairy cattle in the United States[J].Journal of Dairy Science,1989,72(3):685-692. [6] HARE E,NORMAN H D,WRIGHT J R.Trends in calving ages and calving intervals for dairy cattle breeds in the United States[J].Journal of Dairy Science,2006,89(1):365-370. [7] 杨利国.我国奶牛繁殖现状与最新研究进展[J].中国乳业,2009,12:54-58. YANG L G.Current situation and latest research progress of dairy cattle breeding in China[J].China Dairy,2009,12:54-58.(in Chinese) [8] WU J J,WATHES D C,BRICKELL J S,et al.Reproductive performance and survival of Chinese Holstein dairy cows in central China[J].Animal Production Science,2012,52(1):11-19. [9] 梁小军,高慧兰,马吉锋,等.荷斯坦牛胎间距的影响因素及月龄和胎间距的回归分析[J].中国奶牛,2018,7:37-40. LIANG X J,GAO H L,MA J F.Regression analysis of month age and calving interval of Holstein cows[J].China Dairy Cattle,2018,7:37-40.(in Chinese) [10] ARBEL R,BIGUN Y,EZRA E,et al.The effect of extended calving intervals in high-yielding lactating cows on milk production and profitability[J].Journal of Dairy Science,2001,84(3):600-608. [11] LUCY M C.Symposium review:Selection for fertility in the modern dairy cow-Current status and future direction for genetic selection[J].Journal of Dairy Science,2019,102(4):3706-3721. [12] HOLMANN F J,SHUMWAY C R,BLAKE R W,et al.Economic value of days open for Holstein cows of alternative milk yields with varying calving intervals[J].Journal of Dairy Science,1984,67(3):636-643. [13] SCHMIDT G H.Effect of length of calving intervals on income over feed and variable costs[J].Journal of Dairy Science,1989,72(6):1605-1611. [14] LEHMANN J O,FADEL J G,MOGENSEN L,et al.Effect of calving interval and parity on milk yield per feeding day in Danish commercial dairy herds[J].Journal of Dairy Science,2016,99(1):621-633. [15] VAN AMBURGH M E,GALTON D M,BAUMAN D E,et al.Management and economics of extended calving intervals with use of bovine somatotropin[J].Livestock Production Science,1997,50(1-2):15-28. [16] AULDIST M J,O'BRIEN G,COLE D,et al.Effects of varying lactation length on milk production capacity of cows in pasture-based dairying systems[J].Journal of Dairy Science,2007,90(7):3234-3241. [17] DALCQ A C,BECKERS Y,MAYERES P,et al.The feeding system impacts relationships between calving interval and economic results of dairy farms[J].Animal,2017,12(8):1662-1671. [18] BORMAN J M,MACMILLAN K L,FAHEY J.The potential for extended lactations in victorian dairying:A review[J].Australian Journal of Experimental Agriculture,2004,44(6):507-519. [19] LOMANDER H,SVENSSON C,HALLÉN-SANDGREN C,et al.Associations between decreased fertility and management factors,claw health,and somatic cell count in Swedish dairy cows[J].Journal of Dairy Science,2013,96(10):6315-6323. [20] 任小丽,栗敏杰,白雪利,等.中国荷斯坦牛青年初产年龄和成年母牛产犊间隔遗传参数估计[J].中国畜牧杂志,2019,55(3):45-49. REN X L,LI M J,BAI X L.Genetic parameters for age at first calving of heifer and calving interval of cow in Chinese Holstein[J].Chinese Journal of Animal Science,2019,55(3):45-49.(in Chinese) [21] 梁艳,张强,唐程,等.江苏省中型牧场荷斯坦牛产犊间隔的影响因素分析[J].中国畜牧杂志,2020,56(3):103-106. LIANG Y,ZHANG Q,TANG C,et al.Analysis of influencing factors of calving interval of Holstein cows in medium-sized pastures in Jiangsu province[J].Chinese Journal of Animal Science,2020,56(3):103-106.(in Chinese) [22] SLAMA H,WELLS M E,ADAMS G D,et al.Factors affecting calving interval in dairy herds[J].Journal of Dairy Science,1976,59:1334-1339. [23] ÁLEX B.Effects of nutrition and genetics on fertility in dairy cows[J].Reproduction Fertility and Develop-ment,2019,31(1):40-54. [24] MICHAELIS I,BURFEIND O,HEUWIESER W.Evaluation of oestrous detection in dairy cattle comparing an automated activity monitoring system to visual observation[J].Reproduction in Domestic Animals,2014,49(4):621-628. [25] NELSON S T,HAADEM C S,NØDTVEDT A,et al.Automated activity monitoring and visual observation of estrus in a herd of loose housed Hereford cattle:Diagnostic accuracy and time to ovulation[J].Theriogenology,2017,87:205-211. [26] LEROY C N S,WALTON J S,LEBLANC S J.Estrous detection intensity and accuracy and optimal timing of insemination with automated activity monitors for dairy cows[J].Journal of Dairy Science,2018,101(2):1638-1647. [27] SILPER B F,ROBLES I,MADUREIRA A M L,et al.Automated and visual measurements of estrous behavior and their sources of variation in Holstein heifers.Ⅰ:Walking activity and behavior frequency[J].Theriogenology,2015,84(2):312-320. [28] OLTENACU P A,ROUNSAVILLE T R,MILLIGAN R A,et al.Systems analysis for designing reproductive management programs to increase production and profit in dairy herds[J].Journal of Dairy Science,1981,64(10):2096-2104. [29] DEJARNETTE J M,MARSHALL C E,LENZ R W,et al.Sustaining the fertility of artificially inseminated dairy cattle:The role of the artificial insemination industry[J].Journal of Dairy Science,2004,87(suppl):E93-E104. [30] MOORE S G,HASLER J F.A 100-year review:Reproductive technologies in dairy science[J].Journal of Dairy Science,2017,100(12):10314-10331. [31] TOUCHBERRY R W,ROTTENSTEN K,ANDERSEN H.Associations between service interval,interval from first service to conception,number of services per conception,and level of butterfat production[J].Journal of Dairy Science,195,42(7):1157-1170. [32] LEE J I,KIM I H.Pregnancy loss in dairy cows:The contributing factors,the effects on reproductive performance and the economic impact[J].Journal of Veterinary Science,2007,8(3):283-288. [33] MOORE D A,OVERTON M W,CHEBEL R C,et al.Evaluation of factors that affect embryonic loss in dairy cattle[J].Journal of the American Veterinary Medical Association,2005,226(7):1112-1118. [34] SERRANO B,LÓPEZ-GATIUS F,HUNTER R H F,et al.Anomalous pregnancies during late embryonic/early foetal period in high producing dairy cows[J].Reproduction in Domestic Animals,2009,44(4):672-676. [35] PÉREZ-BÁEZ J,RISCO C A,CHEBEL R C,et al.Association of dry matter intake and energy balance prepartum and postpartum with health disorders postpartum:Part Ⅱ.Ketosis and clinical mastitis[J].Journal of Dairy Science.2019;102(10):9151-9164. [36] AHMADZADEH A,FRAGO F,SHAFⅡ B,et al.Effect of clinical mastitis and other diseases on reproductive performance of Holstein cows[J].Animal Reproduction Science,2009,112(34):273-282. [37] SHARMA V B,VERMA M R.Effects of disease on reproduction performance in bovine[J].Environment & Ecology,2015,33:577-580. [38] SCHUERMANN Y,WELSFORD G E,NITSCHMANN E,et al.Association between prebreeding metabolic profiles and reproductive performance in heifers and lactating dairy cows[J].Theriogenology,2019,131:79-88. [39] CHAPINAL N,VON KEYSERLINGK M A G,CERRI R L A,et al.Short communication:Herd-level reproductive performance and its relationship with lameness and leg injuries in freestall dairy herds in the Northeastern United States[J].Journal of Dairy Science,2013,96(11):7066-7072. [40] ADNANE M,CHAPWANYA A,KAIDI R,et al.Profiling inflammatory biomarkers in cervico-vaginal mucus (CVM) postpartum:Potential early indicators of bovine clinical endometritis?[J].Theriogenology,2017,103:117-122. [41] SHELDON I M,LEWIS G S,LEBLANC S,et al.Defining postpartum uterine disease in cattle[J].Theriogenology,2006,65(8):1516-1530. [42] ORTEGA H H,MARELLI B E,REY F,et al.Molecular aspects of bovine cystic ovarian disease pathogenesis[J].Reproduction,2015,149:R251-R264. [43] DHARA S.Cystic ovarian disease in dairy cow[J].Theriogenology Insight,2019,9:23-30. [44] LEBLANC S J,DUFFIELD T F,LESLIE K E,et al.Defining and diagnosing postpartum clinical endometritis and its impact on reproductive performance in dairy cows[J].Journal of Dairy Science,2002,85(9):2223-2236. [45] GILBERT R O,SHIN S T,GUARD C L,et al.Prevalence of endometritis and its effects on reproductive performance of dairy cows[J].Theriogeno-logy,2005,64(9):1879-1888. [46] SCHRICK F N,HOCKETT M E,SAXTON A M,et al.Influence of subclinical mastitis during early lactation on reproductive parameters[J].Journal of Dairy Science,2001,84(6):1407-1412. [47] HERTL J A,GRÖHN Y T,LEACH J D G,et al.Effects of clinical mastitis caused by Gram-positive and Gram-negative bacteria and other organisms on the probability of conception in New York State Holstein dairy cows[J].Journal of Dairy Science,2010,93(4):1551-1560. [48] DAHL M O,MAUNSELL F P,DE VRIES A,et al.Evidence that mastitis can cause pregnancy loss in dairy cows:A systematic review of observational studies[J].Journal of Dairy Science,2017,100(10):8322-8329. [49] KUMAR N,MANIMARAN A,KUMARESAN A,et al.Mastitis effects on reproductive performance in dairy cattle:A review[J].Tropical Animal Health and Production,2017,49(4),663-673. [50] SANTOS G,BOTTINO M P,SANTOS A P C,et al.Subclinical mastitis interferes with ovulation,oocyte and granulosa cell quality in dairy cows[J].Theriogenology,2018,119:214-219. [51] ESPEJO L A,ENDRES M I,SALFER J A.Prevalence of lameness in high-producing Holstein cows housed in freestall barns in Minnesota[J].Journal of Dairy Science,2006,89(8):3052-3058. [52] DIPPEL S,DOLEZAL M,BRENNINKMEYER C,et al.Risk factors for lameness in freestall-housed dairy cows across two breeds,farming systems,and countries[J].Journal of Dairy Science,2009,92(11):5476-5486. [53] GARBARINO E J,HERNANDEZ J A,SHEARER J K,et al.Effect of lameness on ovarian activity in postpartum Holstein cows[J].Journal of Dairy Science,2004,87(12):4123-4131. [54] BICALHO R C,VOKEY F,ERB H N,et al.Visual locomotion scoring in the first seventy days in milk:Impact on pregnancy and survival[J].Journal of Dairy Science,2007,90(10):4586-4591. [55] MACHADO V S,SILVA T H.Adaptive immunity in the postpartum uterus:Potential use of vaccines to control metritis[J].Theriogenology,2020,150:201-209. [56] PEREIRA M H C,COOKE R F,ALFIERI A A,et al.Effects of vaccination against reproductive diseases on reproductive performance of lactating dairy cows submitted to AI[J].Animal Reproduction Science,2013,137(34):156-162. [57] AONO F H,COOKE R F,ALFIERI A A,et al.Effects of vaccination against reproductive diseases on reproductive performance of beef cows submitted to fixed-timed AI in Brazilian cow-calf operations[J].Theriogenology,2013,79(2):242-248. [58] PAUL H.WALZ,MISTY A.EDMONDSON M,et al.Effect of vaccination with a multivalent modified-live viral vaccine on reproductive performance in synchronized beef heifers[J].Theriogenology,2015,83(5):822-831. [59] ABDELLI A,RABOISSON D,KAIDI R,et al.Elevated non-esterified fatty acid and β-hydroxy-butyrate in transition dairy cows and their association with reproductive performance and disorders:A meta-analysis[J].Theriogenology,2017,93:99-104. [60] BARLETTA R V,MATURANA FILHO M,CARVALHO P D,et al.Association of changes among body condition score during the transition period with NEFA and BHBA concentrations,milk production,fertility,and health of Holstein cows[J].Theriogenology,2017,104:30-36. [61] JEONG J K,CHOI I S,MOON S H,et al.Effect of two treatment protocols for ketosis on the resolution,postpartum health,milk yield,and reproductive outcomes of dairy cows[J].Theriogenology,2018,106:53-59. [62] LAVEN R A,DAWUDA P M,SCARAMUZZI R J,et al.The effect of feeding diets high in quickly degradable nitrogen on follicular development and embryo growth in lactating Holstein dairy cows[J].Animal Reprodution Science,2004,84(1-2):41-52. [63] RHOADS ML,GILBERT RO,LUCY M C,et al.Effects of urea infusion on the uterine luminal environment of dairy cows[J].Journal of Dairy Science,2004,87(9):2896-2901. [64] LAVEN R A,BIGGADIKE H J,ALLISON R D.The effect of pasture nitrate concentration and concentrate intake after turnout on embryo growth and viability in the lactating dairy cow[J].Reproduction in Domestic Animals,2002,37(2):111-115. [65] RABOISSON D,ALBAAJ A,NONNE G,et al.High urea and pregnancy or conception in dairy cows:A meta-analysis to define the appropriate urea threshold[J].Journal of Dairy Science,2017,100(9):7581-7587. [66] LEBLANC S J,LISSEMORE K D,KELTON D F,et al.Major advances in disease prevention in dairy cattle[J].Journal of Dairy Science,2006,89(4):1267-1279. [67] DRACKLEY J K.Biology of dairy cows during the transition period:The final frontier?[J].Journal of Dairy Science,1999,82(11):2259-2273. [68] SHIN E K,JEONG J K,CHOI I S,et al.Relationships among ketosis,serum metabolites,body condition,and reproductive outcomes in dairy cows[J].Theriogenology,2015,84(2):252-260. [69] OSPINA P A,NYDAM D V,STOKOL T,et al.Associations of elevated nonesterified fatty acids and β-hydroxybutyrate concentrations with early lactation reproductive performance and milk production in transition dairy cattle in the Northeastern United States[J].Journal of Dairy Science,2010,93(4):1596-1603. [70] GIORDANO J O,FRICKE P M,WILTBANK M C,et al.An economic decision-making support system for selection of reproductive management programs on dairy farms[J].Journal of Dairy Science,2011,94(12):6216-6232. [71] JAN T S,SØREN Ø.Economic consequences of postponed first insemination of cows in a dairy cattle herd[J].Livestock Production Science,2003,79(2-3):145-153. [72] INCHAISRI C,JORRITSMA R,PLAM V,et al.Analysis of the economically optimal voluntary waiting period for first insemination[J].Journal of Dairy Science,2011,94(8):3811-3823. [73] LARSSON B,BERGLUND B.Reproductive perfor-mance in cows with extended calving interval[J].Reproduction in Domestic Animals,2000,35(6):277-279. [74] GALVÄO K N,FEDERICO P,DE VRIES A,et al.Economic comparison of reproductive programs for dairy herds using estrus detection,timed artificial insemination,or a combination[J].Journal of Dairy Science,2013,96(4):2681-2693. [75] SCULLY S,BUTLER ST,KELLY AK,et al.Early pregnancy diagnosis on days 18 to 21 postinse-mination using high-resolution imaging in lactating dairy cows[J].Journal of Dairy Science,2014,97(6):3542-3557. [76] DALE E,KELLEY,KLIBS N,et al.Using doppler ultrasonography on day 34 of pregnancy to predict pregnancy loss in lactating dairy cattle[J].Journal of Dairy Science,2017,100(4):3266-3271. [77] DELORENZO M A,SPREEN T H,BRYAN G R,et al.Optimizing model:Insemination,replacement,seasonal production,and cash flow[J].Journal of Dairy Science,1992,75(3):885-896. [78] BASCOM S S,YOUNG A J.A summary of the reasons why farmers cull cows[J].Journal of Dairy Science,1998,81(8):2299-2305. [79] FETROW J,NORDLUND K V,NORMAN H D.Culling:Nomenclature,definitions,and recommenda-tions[J].Journal of Dairy Science,2006,89(6):1896-1905. [80] GRÖHN Y T,EICKER S W,DUCROCQ V,et al.Effect of diseases on the culling of Holstein dairy cows in New York State[J].Journal of Dairy Science,1998,81(4):966-978. [81] COOK N B.Symposium review:The impact of management and facilities on cow culling rates[J].Journal of Dairy Science,2020,103(4):3846-3855. [82] STOJKOV J,VON KEYSERLINGK M A G,DUFFIELD T,et al.Management of cull dairy cows:Culling decisions,duration of transport,and effect on cow condition[J].Journal of Dairy Science,2020,103(3):2636-2649. [83] GROENENDAAL H,GALLIGAN D T,MULDER H A.An economic spreadsheet model to determine optimal breeding and replacement decisions for dairy cattle[J].Journal of Dairy Science,2004,87(7):2146-2157. [84] MEE J F.Managing the dairy cow at calving time[J].The Veterinary Clinics of North America.Food Animal Practice,2004,20(3):521-546. [85] MEE J F.Prevalence and risk factors for dystocia in dairy cattle:A review[J].The Veterinary Journal,2008,176(1):93-101. [86] SCHUENEMANN G M,NIETO I,BAS S,et al.Assessment of calving progress and reference times for obstetric intervention during dystocia in Holstein dairy cows[J].Journal of Dairy Science,2011,94(11):5494-5501. [87] KOVÁCS L,KÉZÉR F L,SZENCI O.Effect of calving process on the outcomes of delivery and postpartum health of dairy cows with unassisted and assisted calvings[J].Journal of Dairy Science,2016,99(9):7568-7773. [88] MURAT O Y,HATICE E Ç,MERT P,et al.The evaluation of superoxide dismutase activity,neutrophil function,and metabolic profile in cows with retained placenta[J].Theriogenology,2019,128:40-46. [89] ÖSTERMAN S,BERTILSSON J.Extended calving interval in combination with milking two or three times per day:Effects on milk production and milk composition[J].Livestock Production Science,2003,82(2-3):139-149. [90] SAFIULLAH A M,PRABAHARAN R,SADASIVAM P.Economic analysis of calving interval of hungarian dairy cattle[J].Journal of Applied Animal Research,2001,19:237-246. |
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