Cattle Fertility and Sterility

Description

Improving fertillity will increase the efficiency of dairy production. This is beneficial for the environment, economic viability and animal welfare. An improvement of reproductive performance for dairy cattle production will shorten the calving interval, increase the lifetime of a cow, lower insemination efforts and diminish veterinary treatments. Modern dairy cows may have high milk yields, but fertility and callving performance have suffered due to intensive genetic selection. The sustainability of dairy cattle farming relies on the ability of cows to continue producing offspring while coping with environmental constraints. Sterillity is the physiological inability to effect sexual reproduction in a living thing, members of whose kind have been produced sexually. Sterility has a wide range of causes. It may be an inherited trait, as in the mule; or it may be acquired from the environment, for example through physical injury or disease, or by exposure to radiation. Dairy cow herd sterility is nowadays considered pathological syndrome, and is part of everyday dairy cattle pathollogy, it is not a disease sui generis. Etiology of herd infertility is complex and includes several groups of factors. Factors that cause herd sterility are alimentary, hereditary, hormonal, infectious, environmentall and insernination errors. In the etiology of herd infertility scarce and unbalanced diet dominates in 40 to 75 percent. Due to the complex etiology in treatment of herd infertility no general and unique prescription exists. Increased milk production and selection of cows for the production level of over eight thousand litters of milk in lactation This book apart from meeting the professional needs of U.G, P.G, teachers, scientists, clinicians of veterinary universities/colleges will also served as a reference book for field veterinarians. Present book has been complete to cater to the requirements of the teachers, researchers and students.