The objective of this study was to determine size of testes, sexual behaviour, semen quality and testosterone concentration on 40 Ossimi rams in relation to scrotal circumference and age. Rams were divided into two groups similar in age and body weight. Group A with age of 1-1.5 years old and group B with 2-2.5 years old. Each group was divided into subgroups according to the scrotal circumfere...

background: egg yolk is the main cryoprotectant agent in semen freezing extenders which is used in order to protect spermatozoa against cold shock. however elimination of animal bioproducts from the cryopreservation protocol is becoming mandatory. therefore the aim of this study is to compare a previously studied homemade soya bean lecithin based extender with a commercially available extender ...

Oxidative stress during freezing-thawing reduces sperm motility, viability, membrane functions and antioxidant capacity. Thymus vulgaris has antioxidant properties due to phenolic compounds. The purpose of current study was to evaluate the effect of Thymus vulgaris extract as a natural antioxidant on post-thawed Moghani ram sperm quality. Semen samples were collected twice a week from four rams...

Reproductive efficiency represented by sexual desire, semen quality, testicular dimensions, and level of sex hormones are among the main components ram fertility, which affect fertility productivity herd. Since development testicles is related to reproductive activity ability fertilize, so measuring dimensions important in evaluating capacity rams. In addition, concentration testosterone reflec...

previous studies have indicated that fish oil intake wi1l improve semen quality in some mammals and birds. the aim of this study was to investigate the effect of dietary fish oil on reproductive performance in ram. eight zandi rams were divided into two groups and fed either a control diet or a supplemented diet with fish oil. both of the diets were isocaloric and isonitrogenous and formulated ...