Academic Research Journal of Agricultural Science and Research
 

Academic Research Journal of Agricultural Science and Research 

Vol. 5(7), pp. 539-560. November, 2017.

ISSN: 2360-7874 

 DOI: 10.14662/ARJASR2017.085

Full Length Research

Correlations between Sexual Capacity of Boars

and Fertility Rates of Mukota, Windsnyer And

Kolbroek Sows

T Teele^a, D O Umesiobi, B J Mtileni^b

^aDepartment of Agriculture, Central University of Technology, Free State, P/Bag X20539, Bloemfontein, 9300 ^bSchool of AnimalGenetics. Department of Animal Sciences, Tshwane University of Technology #corresponding author tspoteele@live.com

Accepted 24 October 2017

This study was aimed at establishing correlations between sexual capacity of boars and fertility rates of Southern African indigenous sows. Mukota, Windsnyer and Kolbroek pigs’ breeds were subjected to sexual preparation procedures of 0MR, 5MR, 10MR, 15MR, 20MR and 25MR. Semen viability and libido were recorded and analysed for sexual capacity and sows were inseminated with semen from sexually prepared boars and analysed for fertility rates. There were significant (P<0.001) correlation observed in libido following 5MR, 10MR and 15MR at a litter size of 15M, motility and semen volume of 0MR. There were significant correlations between libido and normal sperm at 5MR and 10MR while live sperm correlated significantly with libido at all levels following 15MR and 20MR. Litter size at 15MR significantly correlate (P˂0.01) with libido following 10MR. Litter size correlated significantly with normal sperm following 5MR, 10MR and 15MR. There were significant correlations in motility and normal sperm following 5MR, 10MR, 15MR and 20MR. There was significant negative correlations observed at r²=30% amongst the acrosomal morphology. The manifestation of sow fertility is a result of a multifactor interaction of internal and external conditions of the organism; a complex of measures leading to its optimisation can therefore affect it efficiently. Sows inseminated from the boars sexually prepared following 5MR, 10MR during the afternoon recorded highest litter size. However, even though semen viability was higher following 15MR, inseminated sows did not respond similar to those inseminated following 5MR and 10MR in the afternoon. They recorded a decline in litter size between diurnal periods. However, proportions of litter size and sexual capacity increased ranging from 5MR to 15MR during the morning and afternoon.

Keywords: sexual capacity, Mukota, Windsnyer, Kolbroek, boars, fertility, sows

How to cite this article: Teele T, Umesiobi DO, Mtileni BJ (2017). Correlations between Sexual Capacity of Boars and Fertility Rates of Mukota, Windsnyer And Kolbroek Sows. Acad. Res. J. Agri. Sci. Res. 5(7): 539-560

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