İklim ve Çevre Şartlarının Buzağı Gelişimine Etkileri

Wang J, Li J, Wang F, Xiao J, Wang Y, Yang H, Li S, and Cao Z. Heat stress on calves and heifers: a review. Journal of Animal Science and Biotechnology; 2020; 11:79: 1-8. doi:10.1186/s40104-020-00485-8.

Bakony M, Jurkovich V. Heat stress in dairy calves from birth to weaning. Journal of Dairy Research; 2020; 87(S1): 53-59. doi: 10.1017/S0022029920000618.

Kovacs L, Kézér FL, Ruff F, Jurkovich V, Szenci O. Assessment of heat stress in 7-week old dairy calves with non-invasive physiological parameters in different thermal environments. PLoS One; 2018; 13(7): 1-14. doi: 10.1371/journal.pone.0200622.

Montevecchio AB, Frota W, Merenda VR, Jones KL, Martin JG, Ballou MA, Chebel RC. Heat abatement during the pre-weaning period: effects on growth, feed efficiency, metabolites, and insulin of male Holstein calves. International Journal of Biometeorology; 2022; 66: 2169-2181. doi:10.1007/s00484-022-02358-3

Marrero MG, Dado-Senn B, Field SL, Yang G, Driver PJ, Laporta J. Chronic heat stress delays immune system development and alters serotonin signaling in pre-weaned dairy calves. PLoS One; 2021; 16(6): 1-19. doi: 10.1371/journal.pone.0252474.

Dado-Senn B, Gingerich KN, Horvath KC, Field SL, Marrero MG, Maunsell F, Miller-Cushon KE, Laporta J. Early-life heat stress exposure impacts dairy calf feeding and thermoregulatory behavior. JDS Communications; 2022; 3(1): 38-43. doi.org/10.3168/jdsc.2021-0110.

Dado-Senn B, Field SL, Davidson BD, Casarotto TL, Marreno MG, Ouellet V, Cunha F, Sacher MA, Rice CL, Maunsell FP, Dahl GE, Laporta J. Late-Gestation in utero Heat Stress Limits Dairy Heifer Early-Life Growth and Organ Development. Frontiers in Animal Science; 2021; 2: 1-13. doi:10.3389/fanim.2021.750390.

Tao S, Dahl GE, Laporta J, Bernard JK, Rivas RMO, Marins TN. Physiology symposium: Effects of heat stress during late gestation on the dam and its calf. Journal of Animal Science; 2019; 97(5): 2245-2257. doi: 10.1093/jas/skz061.

Nielsen SS, Alvarez J, Bicout DJ, et al. Welfare of calves. EFSA Journal. 2023;21(3): e07896. doi:10.2903/j.efsa.2023.7896.

Silva FLM, Bittar CMM. Thermogenesis and some rearing strategies of dairy calves at low temperature–a review. Journal of Applied Animal Research. 2019; 47(1):115-122. doi:10.1080/09712119.2019.1580199.

Brown AJ, Scoley G, O’Connell N, Gordon A, Lawther K, Huws SA, Morrison SJ. Pre-Weaned Calf Rearing on Northern Irish Dairy Farms—Part 2: The Impact of Hygiene Practice on Bacterial Levels in Dairy Calf Rearing Environments. Animals 2023; 13: 1109. https://doi.org/10.3390/ani13061109.

Reuscher KJ, Salter RS, da Silva TE, Van Os JMC. Comparison of behavior, thermoregulation, and growth of pair-housed versus individually housed calves in outdoor hutches during continental wintertime. Journal of Dairy Science; 2024; 107(4): 2268-2283. doi.org/10.3168/jds.2023-23941

Rutherford NH, Gordon AW, Arnott G, Lively OF. The effect of calf jackets on the health, performance, and skin temperature of dairy origin beef calves. Translational Animal Science; 2020; 4: 316-323. doi: 10.1093/tas/txz172

Bell DJ, Robertson J, Macrae AI, Jennings A, Mason CS, Haskell MJ. The effect of the climatic housing environment on the growth of dairy-bred calves in the first month of life on a Scottish farm. Animals; 2021; 11 (9): 2516. doi: 10.3390/ani11092516

Hyde RM, Green MJ, Hudson C, Down PM. Factors associated with daily weight gain in preweaned calves on dairy farms. Preventive Veterinary Medicine; 2021; 190: 105320. doi: 10.1016/j.prevetmed.2021.105320.

Lorenz I. Calf health from birth to weaning—an update. Irish Veterinary Journal; 2021; 74(5):1-8. doi:10.1186/s13620-021-00185-3.

Ettema JF, Santos JEP. Impact of age at calving on lactation, reproduction, health, and income in first-parity Holsteins on commercial farms. Journal of Dairy Science, 2004; 87(8):2730-2742. doi: 10.3168/jds.S0022-0302(04)73400-1.

Atashi H, Asaadi A, Hostens M. Association between age at first calving and lactation performance, lactation curve, calving interval, calf birth weight, and dystocia in Holstein dairy cows. PLoS One; 2021; 16(1):e0244825. doi: 10.1371/journal.pone.0244825.

Kusaka H, Yamazaki T, Sakaguchi M. Association of the age and bodyweight at first calving with the reproductive and productive performance in one herd of Holstein dairy heifers in Japan. Veterinary Record Open; 2022;9:e44. doi: 10.1002/vro2.44.

Lorenz I. Calf health from birth to weaning—an update. Irish Veterinary Journal; 2021;74:5. doi: 10.1186/s13620-021-00185-3.

Mee JF. Prevalence and risk factors for dystocia in dairy cattle: a review. The Veterinary Journal; 2008;176(1):93-101. doi: 10.1016/j.tvjl.2007.12.032.

Johanson JM, Berger PJ. Birth weight as a predictor of calving ease and perinatal mortality in Holstein cattle. Journal of Dairy Science; 2003;86(11):3745-3755. doi: 10.3168/jds.S0022-0302(03)73981-2.

Lombard JE, Garry FB, Tomlinson SM, et al. Impacts of dystocia on health and survival of dairy calves. Journal of Dairy Science; 2007;90(4):1751-1760. doi: 10.3168/jds.2006-295.

Alharthi AS, Coleman DN, Alhidary IA, et al. Maternal body condition during late-pregnancy is associated with in utero development and neonatal growth of Holstein calves. Journal of Animal Science and Biotechnology; 2021;12:38. doi: 10.1186/s40104-021-00566-2.

Zablotski Y, Voigt K, Hoedemaker M, et al. Perinatal mortality in German dairy cattle: unveiling the importance of cow-level risk factors and their interactions using a multifaceted modelling approach. PLoS One; 2024;19:e0302004. doi: 10.1371/journal.pone.0302004.

Hassanein EM, Szelényi Z, Szenci O. Gonadotropin-releasing hormone (GnRH) and its agonists in bovine reproduction I: structure, biosynthesis, physiological effects, and its role in estrous synchronization. Animals. 2024;14(10):1473. doi: 10.3390/ani14101473. 26

Bihon A, Assefa A. Prostaglandin based estrus synchronization in cattle: a review. Cogent Food and Agriculture. 2021;7(1). doi: 10.1080/23311932.2021.1932051. 27

Nowicki A, Barański W, Baryczka A, Janowski T. OvSynch protocol and its modifications in the reproduction management of dairy cattle herds—an update. Journal of Veterinary Research. 2017;61(3):329-336. doi: 10.1515/jvetres-2017-0043. 28

Rabiee AR, Lean IJ, Stevenson MA. Efficacy of Ovsynch program on reproductive performance in dairy cattle: a meta-analysis. Journal of Dairy Science. 2005;88(8):2754-2770. doi: 10.3168/jds. S0022-0302(05)72955-6. 29

Bello NM, Steibel JP, Pursley JR. Optimizing ovulation to first GnRH improved outcomes to each hormonal injection of Ovsynch in lactating dairy cows. Journal of Dairy Science. 2006;89(9):3413-3424. doi: 10.3168/jds.S0022-0302(06)72378-5. 30

Galvão KN, Santos JEP. Factors affecting synchronization and conception rate after the Ovsynch protocol in lactating Holstein cows. Reproduction in Domestic Animals. 2010;45(3):439-446. doi: 10.1111/j.1439-0531.2008.01220. x. 31

Lopez-Gatius F. Ovarian response to prostaglandin F2α in lactating dairy cows: a clinical update. Journal of Reproduction and Development. 2022; 68(2):104-109. doi: 10.1262/jrd.2021-119. 32

Bayemi PH, Leinyuy I, Nsongka MV, Webb EC, Nchinda VP, Cavestany D. Effect of cow parity and synchronization method with PGF2α on conception rates of Bos indicus cows in Cameroon. Tropical Animal Health and Production. 2015; 47:907-914. doi: 10.1007/s11250-014-0701-7. 33

Dodicho AA, Gebeyehu ST. Evaluating single and double doses of prostaglandin (PGF2α) injection on estrus induction and conception rate in Boran cattle breed in Southwestern Ethiopia. Cogent Food and Agriculture. 2024;10(1). doi: 10.1080/23311932.2024.2420851. 34

Martinez MF, De Nava G, Demmers KJ, Tutt D, Sabarros MR, Smaill B, et al. Intravaginal progesterone devices in synchronization protocols for artificial insemination in beef heifers. Reproduction in Domestic Animals. 2012;47(5): e25-e33. doi: 10.1111/j.1439-0531.2011.01833. x. 35

Oosthuizen N, Porter K, Burato S, Kasimanickam R, Kasimanickam V. Effects of pre-synchronization with prostaglandin F2α and a progestin, and delayed insemination on pregnancy rates with sexed semen in replacement beef heifers. Frontiers in Animal Science. 2022; 3:870978. doi: 10.3389/fanim.2022.870978. 36

Ren Y, Duhatschek D, Bartolomeu CC, Burdick Sanchez NC, Fricke PM, Cabrera VE. An automated system for cattle reproductive management under the IoT framework. Part I: the e-Synch system and cow responses. Frontiers in Animal Science. 2023; 4:1093851. doi: 10.3389/fanim.2023.1093851. 37

Ren Y, Duhatschek D, Bartolomeu CC, Burdick Sanchez NC, Fricke PM, Cabrera VE. An automated system for cattle reproductive management under the IoT framework. Part II: induction of luteinizing hormone release after gonadotropin releasing hormone treatment. Frontiers in Animal Science. 2023; 4:1093857. doi: 10.3389/fanim.2023.1093857. 38

Oosthuizen N, Goncalves LM, Burato S, Kasimanickam R, Kasimanickam V. Comparison of different GnRH compounds on fertility outcomes in ovulation synchronized and presynchronized beef cows. Frontiers in Animal Science. 2025; 6:1502984. doi: 10.3389/fanim.2025.1502984. 39