ARTIFICIAL INSEMINATION IN FARM ANIMALS - Phenix-Vet

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26Artificial Insemination in Farm AnimalsAwasthi Mk, Kavani FS, Siddiquee GM, Sarvaiya NP, Terashri HJ. 2007. Is slow folliculargrowth the cows of silent estrus in water buffaloes? Anim Reprod Sci. 99:258-268.Barkawi AH, Hafez YM, Ibrahim SA, Ashour G, El Asheeri AK, Ghanem N. 2009.Characteristics of ovarian follicular dynamics throughout the estrous cycle ofEgyptian buffaloes. Anim Reprod Sci. 110:326-334.Campanile G, Neglia G, Gasparrini B, Galiero G, Prandi J, Di Palo R, D´occhio Mj, ZicarelliL. 2005. Embryonic mortality in buffaloes synchronized and mated by artificialinsemination during the seasonal decline in reproductive function. Theriogenology.63:2334-2340.Campanile G, Di Palo R, Neglia G, Vecchio D, Gasparrini B, Prandi A, Galiero G, D´occhio,MJ. 2007. Corpus luteum function and embryonic mortality in buffaloes treatedwith a GnRH agonist, hCG and progesterone. Theriogenology. 67:1393-1398.Chauhan FS, Sharma RD, Singh GB. 1983. Serum progesterone concentrations in normalcycling and sub oestrus buffaloes. Indian J Dairy Sci. 36:28-33.De Araujo Berber RCA, Madureira EH, Baruselli PS. 2002. Comparison of two Ovsynchprotocols (GnRH vs. LH) for fixed time insemination in buffalo (Bubalus bubalis).Theriogenology. 57:1421-1430.De Rensis F, Ronci J. 2005. Conception rate after fixed time insemination following Ovsynchprotocol with and without progesterone supplementation in cyclic and no-cyclicMediterranean Italian buffaloes (Bubalus bubalis). Theriogenology. 63:1824-1831.Kumar R, Jindal ED, Rattan PJS. 1991. Plasma hormonal profile during oestrus cycle ofMurrah buffalo heifer. Indian J Anim Sci. 61:382-385.Paul V, Prakash BS. 2005. Efficacy of the ovsynch protocols for synchronization of ovulationand fixed time artificial insemination in Murrah buffaloes (bubalus bubalis).Theriogenology. 64:1049-1060.Presicce G, Parmegiani A, Senatore E, Estecco R, Barile VL, De Mauro G, De Santis G,Terzano G. 2003. Hormonal dymanics and follicular turnover in prepuberalMediterranean buffaloes (bubalus bubalis). Theriogenology. 60:485-493.Presicce G, Senatore E, Bella A, De Santis G, Barile VL, De Mauro G, Terzano G, Estecco R,Parmegiani, A. 2004. Ovarian follicular dynamics and hormonal profiles in heifersand mixed parity Mediterranean buffaloes (bubalus bubalis) following and estrussynchronization protocols. Theriogenology. 61:1343-1355.Presicce GA, Senatore EM, De Santis G, Bella A. 2005. Follicle turnover and pregnancy ratesfollowing oestrus synchronization protocols in Mediterranean buffaloes (Bubalusbubalis). Reprod Dom Anim. 40:443-447.Ronci G, De Rensis F. 2005. Comparison between Ovsynch protocols plus GnRH for fixedtime artificial insemination in Buffalo cows. Proc 1º European Buffalo Congress,Salerno, Italia. p 248.Vale WG, Ohashi, OM, Souza JS, Ribeiro HFL, Silva AOA, Nanba SY. 1989. Morteembrionária e fetal em búfalos (bubalus bubalis). Rev Bras Reprod Anim. 13:157-165.Warriach HM, Channa AA, Ahmad N. 2008. Effect of oestrus synchronization methods onoestrus behaviour, timing of ovulation and pregnancy rate during the breeding andlow breeding seasons in Nili-Ravi buffaloes. Anim Reprod Sci. 107:62-67.
Artificial Insemination of Sheep –Possibilities, Realities and Techniquesat the Farm Level3Sándor Kukovics 1 , Erzsébet Gyökér 2 ,Tímea Németh 1 and Elemér Gergátz 21 Research Institute for Animal Breeding and Nutrition2 Pharmagene-Farm Ltd, Biotechnical Research StationHungary1. Introduction1.1 History of artificial insemination over the last 50 yearsThe state of artificial insemination in the sheep and goat industries has developeddifferently in Europe over the last couple of decades. The number of artificial inseminationsin the sheep industry and the ratio of inseminated ewes increased sharply in East Europe,especially in the eastern part of Mid-Europe, during the 1950s and 1960s. The main reasonfor this increase could be due to the planned economy and certain central pressure from thestate. The presence and the ratio of use of this method were much lower in other parts ofEurope, and its development was rather slower.Because of unfavourable economical circumstances, the profitability of the sheep industryfell in the eastern part of Europe and the number of sheep kept on big state and cooperativefarms declined during the 1970s and the second half of the 1980s. With the changingeconomy in the early 1990s, the decline in sheep number continued. In Hungary, inparticular, during the preparation period prior to accession to the EU, there was a sharpincrease in sheep number, with the increasing trend lasting until the end of 2005. The trendhas reversed since then, with a gradual and intensive reduction.As the consequences of the use of artificial insemination (AI) with semen from importedbreeding rams, wool production traits (fibre diameter, shearing, greasy wool weight andstaple length among others) have steadily and gradually increased in Hungarian Merinoflock. Artificial insemination centres were founded by the state between early 1950s and theend of the 1970s. Some regional sub-stations belonging to each county AI centres weresupplying flocks from state and cooperative farms. Over this period, the state helpedimprove sheep breeding with the operation of AI centres. The number of inseminated ewesreached its peak in the mid 1960s, when 63% of ewes in the national flock were artificiallyinseminated with a relatively wide range, but from the end of this decade, the use of AIstarted to go back. In the Hajdu-Bihar County (east of the country) for instance, the numberof inseminated ewes exceeded 85%, even in mid 1970s’ (Kukovics, 1974; Jávor et al., 2006;Kukovics & Gergátz, 2009). From the mid 1970s, the state-owned artificial inseminationcentres started to close down, the number of rams kept for semen collection was reducedand the breeding animals were sold to various farms.
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ARTIFICIAL INSEMINATION IN FARM ANIMALS - Phenix-Vet

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