Treatment methods for male dog infertility

1. Male dogs with reproductive organ diseases or systemic diseases should be treated accordingly according to the original disease. Congenital infertility and aging infertility generally have no therapeutic value. Except for rare breeds, they are generally eliminated.
2. For infertility caused by feeding and management, we can improve feeding and management, strengthen exercise, and provide nutritionally adequate and balanced food; for infertility caused by poor semen quality, impotence, etc., in addition to strengthening feeding management and targeting the cause In addition to taking corresponding measures, treatments such as testosterone, pregnant mare serum gonadotropin or human chorionic gonadotropin can also be tried according to the condition.
3. For male dogs lacking sexual desire, 10 mg of methyltestosterone (methyltestosterone) can be taken orally, or 20 to 50 mg of testosterone propionate (testosterone propionate) can be injected intramuscularly per time.

Causes of male dog infertility

Compared with female dog infertility, the causes of male dog infertility are more complicated.
1. High temperature stress. When the temperature of the testicles rises to the same as body temperature, the sperm in it will lose viability. If the temperature of the testicles rises for a longer time, the testicles will lose their ability to produce sperm.
2. Local anemia. When testicular torsion occurs, the blood supply to the testicle will be greatly reduced, causing severe anemia, thereby affecting the testicular spermatogenesis. In addition, reduced testicular arterial flow, even for a short period of time, can damage more than half of its testosterone-producing cells.
3. Autoimmunity. When the testicles are damaged, the sperm overflows, causing the autoimmune system to produce antibodies, which sensitizes white blood cells and causes a local immune response. The combination of antigen and antibody greatly reduces the ability of fertilization.
4. Chemical poisoning. For example, zinc can cause severe necrosis of testicular interstitial cells and seminiferous tubules; drugs such as chloroglycerol and alkyl compounds (chlorambucil, ammonium phosphate) can cause pathological changes in the testicles and epididymis; Mycin B, estrogen, and anti-estrogen can cause testicular atrophy; anti-tumor mitogens such as phosphatideamine and vinblastine can inhibit testicular cell division.
5. Hormone imbalance. In hyperthyroidism, the spermatogenic capacity of the testicles decreases; changes in the content of adrenaline hormones can affect the functions of the pituitary gland and testicles; tumors in the hypothalamus or pituitary gland reduce the production and release of gonadotropins, which can cause testicular degeneration and atrophy.
6. Scrotal dermatitis. The scrotal skin of dogs is very sensitive and can easily cause inflammation when stimulated by trauma or chemical substances. Scrotal dermatitis can lead to sperm abnormalities, such as poor motility, increased sperm count with curling tails and cyclocephaly.
7. Excessive sexual intercourse can reduce fertility.
8. Changes in the environment. Can have reversible adverse effects on male dog fertility.
9. Tumor. Seminoma, podicular cell tumor and Leydig cell tumor can all reduce testicular spermatogenesis.
10. Testicular duct obstruction. It often occurs in orchitis and epididymitis.
11. Age. That is, aging infertility. Diagnosis of infertility includes medical history and physical examination, semen quality examination, testicular biopsy, hormone examination, sexual behavior observation, etc.

Introduction to male dog infertility

Male dog infertility is actually the same as female dog infertility. It means that the male dog cannot be fertilized or his sperm cannot fertilize the egg. There are many types of male dog infertility, including primary infertility, low fertility and acquired infertility.