Analysis of the physiological processes connected with sexual maturation of stallions.
Abstract: Physiological processes connected with sexual maturation of stallions were observed on 10 half-breed Anglo-Arab stallions beginning from 8 months of age, until 4.5 years of age. It was found that there is full somatic and sexual development in the stallion reached around the age of 3.5 years, and the sperm morphology stabilized in the range of the physiological norm around 3.0 years of age. On the other hand biochemical components of the semen plasma such as glycerylphosphorylcholine (GPC), ergothioneine (EGT), total protein (PRT), up to age 4.5 years, reach significantly lower value than in mature stallions. This corresponds with lower freezability of stallion spermatozoa, up to this age.
Publication Date: 1987-01-01 PubMed ID: 3454962
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- Journal Article
Summary
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This research studies the physiological processes related to the sexual maturity of stallions. It found that stallions reach full somatic and sexual development around 3.5 years of age, although some biochemical aspects of the semen do not reach maturity until the age of 4.5 years.
Research Methodology
- The research was conducted on a sample size of 10 half-breed Anglo-Arab stallions. These stallions were observed from an age of eight months, up to 4.5 years.
- Various physiological processes connected to the sexual maturation of the stallions were assessed and recorded throughout this period.
Findings And Results
- The researchers discovered that stallions experience full somatic and sexual development around the age of 3.5 years.
- Interestingly, the study found that the sperm morphology, or form and structure, becomes consistent within the physiological norm when the stallion reaches approximately 3 years old.
- The research found a disparity in the maturation rates of the somatic and sexual aspects of a stallion and the biochemistry of the stallion’s semen. Certain biochemical components, including glycerylphosphorylcholine (GPC), ergothioneine (EGT), and total protein (PRT), reach a significantly lower value than in mature stallions until the age of 4.5 years.
- The researchers interpret these biochemical results to correspond with the lower freezability of stallion spermatozoa until the stallion has fully matured at age 4.5 years.
Conclusion and Implications
- The research provides valuable insights into the sexual maturation process of stallions, and ensures more precise breeding programs by pinpointing the stages of maturity in male horse’s life.
- This study offers valuable parameters for veterinary medicine and farms which breed horses, emphasizing the importance of considering the age of a stallion when assessing its reproductive capability.
Cite This Article
APA
Kosiniak K, Bittmar A.
(1987).
Analysis of the physiological processes connected with sexual maturation of stallions.
Pol Arch Weter, 27(1), 5-21.
Publication
Researcher Affiliations
- Department of Animal Reproduction, Academy of Agriculture, Cracow.
MeSH Terms
- Age Factors
- Animals
- Freezing
- Horses / physiology
- Male
- Semen / analysis
- Semen Preservation / veterinary
- Sexual Behavior, Animal / physiology
- Sexual Maturation
- Sperm Motility
- Spermatozoa / cytology
Citations
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