Morphometric study of slaughtered Murrah buffalo bull testis and its correlation with seminal attributes of epididymal semen

Kumar, Hridesh; Srivastava, Siddharth; Kumar, Rajesh

doi:10.56825/bufbu.2022.4143718

Cited by 1 publication

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moderate but significant ( p < .05) correlation of sperm motility with SC, SV and PTW reported in Nellore bulls of Brazil (Viu et al., 2015). In Murrah buffalo bulls (Kumar & Srivastava, 2017), testicular volume showed very high significant positive correlation ( r = .88–.90) with sperm concentration, motility, HOS reactive spermatozoa and negative correlation with total sperm abnormality ( r = −.81). The significant correlations of testicular traits with semen parameters indicated that at least part of the genes involved in the expression of these traits are same.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of predictive ability of linear type gonadal traits on reproductive capacity of breeding dairy bulls

Mandal,

Kumar,

Tyagi

2024

Reprod Domestic Animals

View full text Add to dashboard Cite

Dimensions of linear type traits facilitate selection of livestock for breeding and rearing. To date, use of linear type traits for selection of breeding bulls is highly concentric to scrotal circumference (SC), with probable overlook to other important traits. Present study reported the importance of various gonadal linear type traits on spermatozoa production, age‐related changes in gonadal linear type traits of bulls and predictive ability of these traits on bulls' reproductive potentials. Among all gonadal traits, testicular density (TD), scrotal volume (SV), paired testicular weight (PWT) and SC were found most important predictor variables in order, which can discriminate between good/poor breeding bulls, that is, produced frozen semen doses (FSD) or not. Dimensions of gonadal traits increased significantly up to 36 months age and thereafter, development became slow and negligible. In contrast, TD decreased by 30%, 51%, 64%, 68% and 71% at 12, 24, 36, 48 and >49 months age, respectively, from its base value at 6 months. Bulls of lower TD (≤0.88 g/cm3) had significantly higher ejaculate volume (+9%), sperm motility, sperm concentration (+100 million/mL) and sperm output (+26%)/ejaculate as compared to bulls of higher TD (>0.88 g/cm3). Discriminant function was developed using TD, SV, PWT and SC to identify bulls of superior reproductive potentials. It was concluded that among the investigated traits, TD was the strongest to discriminate between FSD and Non‐FSD bulls. Therefore, our findings suggested that TD could be more potential trait than SC for dairy bulls' breeding soundness evaluation and assessment of reproductive ability.

show abstract

Section: Discussionmentioning

confidence: 99%