Fertility following intracervical or intrauterine laparoscopic insemination of ewes using extenders based on coconut water
Keywords:Extender, Powder coconut water, Intra-cervical insemination, Intrauterine laparoscopic insemination, Ewes
AbstractThe objetive of this study was to evaluate pregnancy rates in ewes using extenders based on coconut water (in natura: NCW or in powder: PCW-102®) following intra - cervical (Trial 1) or intrauterine laparoscopic insemination (Trial 2). Trial 1. Semen from 4 Santa Inês rams were collected, diluted at 32°C (T1: NCW; T2: PCW-102®) and cooled to 4°C. 56 adult Santa Inês ewes were inseminated intra-cervically following syncronization, 31 using the extender NCW and 25 the extender PCW-102®. Trial 2. Semen from 5 rams (Santa Inês: n=04; Dorper n=01) were collected and processed as described. 64 adult crossbred multiparous ewes were inseminated intrauterine by laparoscopy following oestrus syncronization. 37 ewes using the extender NCW and 27 the extender PCW-102®. The pregnancy diagnosis was performed by ultrasonography. The fertility rates between treatments for each method of insemination and within each extender for both methods were analysed by Chi-square test (p<0,05). The pregnancy rates following intra-cervical (NCW: 25.8% vs PCW-102®: 48%) and intrauterine (NCW: 72.9% vs 70.3%) inseminations were not influenced by the extenders. The pregnancy rate was influenced by insemination method (intra-cervical: 35.7% vs laparoscopy: 71.8%; p<0,05). The extenders based coconut water as basis can be used following cervical or intra-uterine laparoscopic inseminations in ewes from Northeast of Brazil under field conditions.
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Machado, V. P., Nunes, J. F., Araújo, A. A. de, Fernandéz, D. R. P., Cordeiro, M. A., Medeiros, C. H. N. de, Medeiros, A. L. N. de, & Monteiro, A. W. U. (2006). Fertility following intracervical or intrauterine laparoscopic insemination of ewes using extenders based on coconut water. Brazilian Journal of Veterinary Research and Animal Science, 43(supl.), 43-49. https://doi.org/10.11606/issn.1678-4456.bjvras.2006.26534
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