Combined effect of heat and nutritional stress on superovulation of Malpura ewes in a semi-arid region.
作者： Davendra Kumar , Kalyan De , Indu Shekhawat , Saumya Bahadur , Krishnappa Balaganur
DOI: 10.1016/J.JTHERBIO.2019.02.007
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摘要: Abstract Sheep reared in hot semi-arid environments are generally exposed to heat and nutritional stress some seasons of the year, which affects both production reproduction. To assess effect high ambient temperature feed scarcity on superovulation, 16 adult Malpura ewes were randomly divided into two groups 8 animals each. G1 (control) was kept under a shed offered maintenance diet, G2 (combined stress) subjected (30% less diet) (38–44 °C for 6 h/day) stress. Ewes superovulated without estrus synchronization by combination single injection 200 IU eCG injections FSH (Folltropin-V) at 12-h intervals tapering doses 5 mg/kg body weight, starting from day 7 natural estrus. given with first PGF2α (10 mg) second last injection. increased respiration rate rectal (P
sci-hub.se 参考文章(30)
S.M.K. Naqvi, R. Gulyani, The Effect of Gonadotrophin Releasing Hormone and Follicle Stimulating Hormone in Conjunction with Pregnant Mare Serum Gonadotrophin on the Superovulatory Response in Crossbred Sheep In India Tropical Animal Health and Production. ,vol. 30, pp. 369- ,(1998) , 10.1023/A:1005196705369
V. Sejian, V. P. Maurya, S. M. K. Naqvi, Effect of thermal stress, restricted feeding and combined stresses (thermal stress and restricted feeding) on growth and plasma reproductive hormone levels of Malpura ewes under semi‐arid tropical environment Journal of Animal Physiology and Animal Nutrition. ,vol. 95, pp. 252- 258 ,(2011) , 10.1111/J.1439-0396.2010.01048.X
Z. Kiyma, B. M. Alexander, E. A. Van Kirk, W. J. Murdoch, D. M. Hallford, G. E. Moss, Effects of feed restriction on reproductive and metabolic hormones in ewes. Journal of Animal Science. ,vol. 82, pp. 2548- 2557 ,(2004) , 10.2527/2004.8292548X
S. Indu, V. Sejian, S. M. K. Naqvi, Impact of simulated semiarid tropical environmental conditions on growth, physiological adaptability, blood metabolites and endocrine responses in Malpura ewes Animal Production Science. ,vol. 55, pp. 766- 776 ,(2015) , 10.1071/AN14085
A Gonzalez-Bulnes, R.M Garcia-Garcia, J Santiago-Moreno, A Lopez-Sebastian, M.J Cocero, Effect of follicular status on superovulatory response in ewes is influenced by presence of corpus luteum at first FSH dose. Theriogenology. ,vol. 58, pp. 1607- 1614 ,(2002) , 10.1016/S0093-691X(02)01078-6
Concepta McManus, Giane Regina Paludo, Helder Louvandini, Rosilene Gugel, Luiz Cláudio Bastos Sasaki, Samuel Rezende Paiva, Heat tolerance in Brazilian sheep: physiological and blood parameters. Tropical Animal Health and Production. ,vol. 41, pp. 95- 101 ,(2009) , 10.1007/S11250-008-9162-1
P.J. Hansen, M. Drost, R.M. Rivera, F.F. Paula-Lopes, Y.M. Al-Katanani, C.E. Krininger, C.C. Chase, Adverse impact of heat stress on embryo production: causes and strategies for mitigation Theriogenology. ,vol. 55, pp. 91- 103 ,(2001) , 10.1016/S0093-691X(00)00448-9
Vanessa Guesdon, Séverine Ligout, Philippe Delagrange, Michael Spedding, Frédéric Lévy, Anne-Lyse Laine, Benoît Malpaux, Elodie Chaillou, Multiple exposures to familiar conspecific withdrawal is a novel robust stress paradigm in ewes. Physiology & Behavior. ,vol. 105, pp. 203- 208 ,(2012) , 10.1016/J.PHYSBEH.2011.08.011
I.F.M. Marai, A.A. El-Darawany, A. Fadiel, M.A.M. Abdel-Hafez, Physiological traits as affected by heat stress in sheep—A review Small Ruminant Research. ,vol. 71, pp. 1- 12 ,(2007) , 10.1016/J.SMALLRUMRES.2006.10.003
LL da Costa, J Chagas e Silva, JR Silva, Superovulatory response, embryo quality and fertility after treatment with different gonadotrophins in native cattle. Theriogenology. ,vol. 56, pp. 65- 77 ,(2001) , 10.1016/S0093-691X(01)00543-X