The study was conducted at Artificial Breeding Research Centre, NDRI, Karnal, to determine the sexual behavior and its relationship with semen quality parameters in Sahiwal breeding bulls. The results depicted that, sexual aggressiveness showed significantly high positive correlation with libido score LS and sexual behavior score SBS. Penile erection score and penile protrusion score PPS both had a significant positive correlation with ejaculatory thrust score, mating ability score, and SBS. It can be concluded that the relationship of sexual behavior and semen quality parameters are reflecting that the sexual behavior of individual bulls is important to harvest good quality and quantity of semen as desired type of sexual preparation can be provided.
The aim of the present review is to provide complementary information about reproductive characteristics of male buffaloes having as perspective a four — year-study based on a weekly seminal collection schedule and collection of data in partner properties of several regions of Brazil. Aspects of testicular growth, reproductive behavior and characteristics of ejaculates of 13 donors are discussed in conjunction with data available in the literature. Selection of buffalo bulls: sexual behavior and its relationship to semen production and fertility. Theriogenology, Use of internal artificial vaginas for breeding soundness evaluation in range bulls: an alternative for electroejaculation allowing observations of sex drive and mating ability. Anim Reprod Sci, The effect of nutrition on sexual development of bulls.
Animal sexual behavior takes many different forms, including within the same species. Common mating or reproductively motivated systems include monogamy , polygyny , polyandry , polygamy and promiscuity. Other sexual behaviour may be reproductively motivated e.
We evaluated 19, bulls from 15 different breeds with ages ranging from two to eight years. The failures of bulls in each step were analyzed by logistic regression. The binary logistic regression was applied because the response variable had only two responses: Success 1 and Failure 0. Older bulls are more likely to be rejected than are younger bulls, regardless of their genetic group. Depending on the step of the assessment, one or another group is rejected.