Study of correlation between reaction time and refractory period (as indices of libido) with semen characteristics in ArkharMerino×Moghani and Baluchi×Moghani rams

Moghaddam, Gholamali; Pourseif, Mohammad M.; Rahimi, Alireza

doi:10.4081/ijas.2012.e66

Cited by 8 publications

(10 citation statements)

References 29 publications

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“…005). The correlation between libido and seminal traits confirmed the needs for simultaneous selection for both libido and semen quality in the herd (30).…”

Section: Discussionsupporting

confidence: 52%

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GnRHR gene polymorphism and its correlation with semen quality in Buffalo bulls (Bubalus bubalis)

Mahmoud¹,

Sakr²,

Ibrahim³

et al. 2021

IJVS

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Fresh semen from fifty bulls was evaluated for ejaculate volume, individual motility, concentration, lives sperm and abnormalities as well as acrosome integrity. Bulls were classified according to semen motility into two groups; good and poor. DNA was extracted from semen of both groups, then the PCR followed by single-strand conformation polymorphism (SSCP) techniques were performed for mutation detection in gonadotropin releasing hormone receptor (GnRHR) gene through multiple sequence alignment. The results showed that the percentages of sperm motility, sperm concentration and live sperm, were significantly higher in good than poor semen quality bulls. However, semen volume, percentage of acrosome integrity and abnormalities did not differ between good and poor. The PCR amplification of 240-bp fragment and the results of SSCP appeared a genetic polymorphism with two patterns. Pattern I was seen in all good bulls, with incidence of 100%. Pattern II appeared only in poor semen quality bulls with a frequency of 31.25%. The sequence analysis of the PCR product for the two patterns showed two single nucleotide polymorphisms (SNPs) as a transversion base substitution mutation at positions 20 (T/A) and 193 (A/T). The GnRHR gene could be used as a genetic marker related to semen quality in buffalo due to the good semen bulls had a unique pattern.

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“…005). The correlation between libido and seminal traits confirmed the needs for simultaneous selection for both libido and semen quality in the herd (30).…”

Section: Discussionsupporting

confidence: 52%

“…Regardless semen quality, all bulls showed significant negative correlation with motility, volume and concentration. In this regard, Moghaddam et al (28) recorded that reaction time had a significant negative relationship (r=-0. 15, P≤0.…”

Section: Discussionmentioning

confidence: 99%

GnRHR gene polymorphism and its correlation with semen quality in Buffalo bulls (Bubalus bubalis)

Mahmoud¹,

Sakr²,

Ibrahim³

et al. 2021

IJVS

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“…RT has been used as a direct indicator of libido (Moghaddam et al, 2012;S. Singh et al, 2015;Solanki et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Reaction time as a libido indicator and its relation to pre‐freeze and post‐thaw sperm quality in bulls

KORKMAZ

Baştan

Şahin

et al. 2023

Reprod Domestic Animals

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Libido and sperm quality output relationship is already not clear in farm animals. The present study compared reaction time (RT) as a libido indicator and the pre‐freeze and post‐thaw sperm quality of AI bulls. Before the collection of ejaculates (n = 53, from 22 AI bulls [4.2 ± 1 years of age]), RTs were collected using a chronometer as the interval between the bull's arrival at the semen collection area and his first false mount (FM) on another male. The ejaculates were examined for their volume, concentration and motility. Subsequently, all aliquots were diluted with a commercial semen extender and equilibrated for 3 h before freezing. Frozen semen samples were thawed and examined for sperm kinematics using CASA, plasma membrane and acrosome integrity of sperm (PMAI) by flow cytometry. Additionally, the temperature humidity index (THI) values were assessed during the study. Multiple linear regression analysis was used to analyse the data. The results indicated that THI had a significant effect on libido (p < .001). However, libido had no effect on either pre‐ or post‐thaw sperm quality parameters except for the velocity of the average pathway (VAP) (p < .05). Therefore, relying solely on RT –libido‐ as an indicator of bull sperm quality at AI stations may not be reliable, as it is a complex behavioural assessment.

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“…Sexual behaviours: Sexual behaviour of each animal was observed after attainment of puberty. Different sexual behaviours were studied according to standard methods (Suyadi 2012, Moghaddam et al 2012).…”

Section: Methodsmentioning

confidence: 99%

Effect of azolla (Azolla pinnata) supplementation on puberty, semen characteristics and sexual behaviour in Alpine × Beetal crossbred bucks

Gupta¹,

Chandra

Shinde

et al. 2022

Indian J of Anim Sci

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The present experiment was conducted at ICAR-National Dairy Research Institute, Karnal, Haryana. Eighteenmale crossbred bucks (Alpine × Beetal) (average 103.94±2.87 days old) were divided into three groups withsix animals in each group, viz. T1 , T2 and T3 . Animals of T1 group were fed different green fodder and concentratemixture to meet their daily nutrient requirement. Animals of T2 group were fed according to T1 except 20% replacement of concentrate mixture by sun-dried azolla on DMB. Animals of T3 group were fed according to T1except the animals were fed with concentrate supplemented with 20% sun-dried azolla on DMB. Effect of azolla onage at puberty, seminal parameters and sexual behaviour was assayed by standard methods. The animals of T3group attained puberty significantly earlier as compared to T1 and T2 . Non-significant effect of azolla upplementation on semen volume, pH, mass activity, abnormality and acrosomal integrity was observed. The progressive motility and sperm concentration was significantly higher in T3 group as compared to T1 . The HOST% and live spermatozoa were significantly higher in T2 and T3 as compared to T1 . Sexual behaviours were significantly better in T2 and T3 as compared to T1 . In conclusion, the supplementation of bucks with azolla reduces their age at puberty, improves seminal characteristics and sexual behaviour

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Study of correlation between reaction time and refractory period (as indices of libido) with semen characteristics in ArkharMerino×Moghani and Baluchi×Moghani rams

Cited by 8 publications

References 29 publications

GnRHR gene polymorphism and its correlation with semen quality in Buffalo bulls (Bubalus bubalis)

GnRHR gene polymorphism and its correlation with semen quality in Buffalo bulls (Bubalus bubalis)

Reaction time as a libido indicator and its relation to pre‐freeze and post‐thaw sperm quality in bulls

Effect of azolla (Azolla pinnata) supplementation on puberty, semen characteristics and sexual behaviour in Alpine × Beetal crossbred bucks

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