The sexual behaviour in experimentally underfed bulls

Wierzbowski, S.

doi:10.1016/0304-3762(75)90091-7

Cited by 3 publications

(3 citation statements)

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“…This shows that sexual behaviour is highly detrimental to low energy feeding. However our result on sexual behaviour contradicted the findings of Wierzbowski (1978) and Mwansa and Makarechian (1991). These authors showed that undernutrition does not have significant influence on sexual behaviour in bulls.…”

Section: Discussioncontrasting

confidence: 98%

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Effect of induced body condition score differences on sexual behavior, scrotal measurements, semen attributes and endocrine responses in Malpura rams under hot semi-arid environment

Maurya

Sejian

Kumar

et al. 2010

Journal of Animal Physiology and Animal Nutrition

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The study was conducted for a period of 45 days to assess the influence of body condition scoring (BCS) on reproductive efficiency of Malpura rams in terms of sexual behaviour, scrotal measurements, semen attributes and endocrine responses. The rams were randomly divided into three groups as group I (BCS = 2.5; n = 7), group II (BCS = 3.0; n = 7) and group III (BCS = 4.0; n = 7). Apart from grazing for 8 h a day, the rams were provided with concentrate mixture at the rate of 100, 300 and 500 g to groups I, II and III respectively to attain their respective BCS. Under these differential feeding regimes, sexual behaviour scrotal measurements, semen characteristics and endocrine parameters were studied at 15-days interval. Sexual behaviour, scrotal volume, scrotal circumference, testicular width, testicular length and scrotal skin thickness differed significantly (p < 0.05) between lower BCS group (group I) and higher BCS groups (groups II and III). The semen volume, mass motility and progressive sperm motility were recorded significantly (p < 0.05) higher in group II and lowest in group I. However, the sperm concentration did not differ significantly between the groups. The mean plasma testosterone concentration differed significantly (p < 0.05) between lower BCS group (group I) and higher BCS groups (groups II and III). Circulating plasma hormone concentrations were influenced due to the BCS. Plasma cortisol, T(3) and T(4) increased as the BCS improved from lower to higher. In conclusion, better reproductive efficiency of rams of moderate BCS (3.0 and 3.5) than rams of lower (2.5) and higher BCS (4.0) indicates the importance of maintaining optimum body condition of breeding rams under hot semi-arid environment.

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Section: Discussioncontrasting

confidence: 98%

“…Nutritional effects on sexual behaviour have generally not been well characterized (Wierzbowski, 1978). All sexual parameters recorded in the study showed similar trend that only group I rams (BCS 2.5) differed significantly for the sexual parameters studied when compared to groups II and III rams.…”

Section: Discussionmentioning

confidence: 99%

Effect of induced body condition score differences on sexual behavior, scrotal measurements, semen attributes and endocrine responses in Malpura rams under hot semi-arid environment

Maurya

Sejian

Kumar

et al. 2010

Journal of Animal Physiology and Animal Nutrition

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“…Other writers. 6,7 have also discovered the influence of season on semen amount. They have reported on the optimal season for optimal outcomes; nevertheless, contradictory findings have also been published.…”

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confidence: 99%

Seasonal variations in semen traits of exotic cattle bulls of different age groups in the subtropical region

Goyal,

Tripathi,

Sharma

2024

Ind. J. Physiol. Allied Sci.

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Background: The age of the bull and season of semen collection may significantly impact semen characteristics, although the results of previously published studies vary somewhat. Unfortunately, breeding programs still do not account for male reproductive traits for a bull's fertility. The effects of season and age on the quality of exotic cattle breeds’ semen have been investigated in the current study. Methods: Two exotic cattle breeds, Jersey and Holstein Friesian, have been chosen from the subtropical region of India for study. The pooled dataset from the Information Network for Animal Productivity & Health (INAPH, 2017–2022) containing data collected at the Frozen Semen Bank in Bassi, Jaipur, India, on three semen traits was used in the study. Three semen traits of exotic bulls – total semen volume, sperm concentration, and the number of sperms per ejaculation were examined in connection to the influences of age and season. Results: The age of the bulls was found to influence the concentration and sperm counts significantly. The semen volume was minimal in the older group, while the sperm concentration was lowest in the adult group. All the tested semen traits were highest in summer and lowest in winter. Conclusion: Therefore, it was concluded that the age and seasonal variations significantly influence the semen quality of exotic cattle breeds and suggested that the reproductive traits of the bulls should be considered for the breeding programs.

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