Tall fescue possesses heat, drought, and pest resistance conferred to the plant by its mutualistic relationship with the ergot alkaloid producing fungal endophyte, Neotyphodium coenophialum. The objective of this study was to evaluate the impact of ergot alkaloid consumption on growth, scrotal circumference (SC), and semen quality. The SC measurement and percentage of motile and normal sperm we...

Infectious pustular balanoposthitis (IPB) is one of the reproductive disorders caused by bovine herpesvirus 1 (BoHV1) that can be transmitted through artificial insemination. A herd of 63 breeding bulls at a frozen semen bank in Odisha state in India experienced a suspected outbreak of IPB, with 11 bulls showing clinical signs of the infection. Clinical signs were noticed in two bulls initially...

Five mature dairy bulls were killed 10 weeks after unilateral vasectomy. Testes on the vasectomized side weighed 67% of the contralateral controls (P<.O1) and contained only 34% as many spermatids as the control testes (P<.01). Since a previous report showed little or no change in spermatogenesis in younger bulls at 23 weeks after vasectomy, possibly vasectomy temporarily interrupts spermatogen...

In vitro fertility assessment using fluorescent technique is a better predictor of fertility status of bulls as compared to traditional semen quality assessment techniques, therefore, the study was planned to assess in vitro fertility status of bulls based on conventional and fluorescent techniques. Seventy-three ejaculates were collected from 12 Murrah buffalo bulls maintained at Artificial Br...

this study aimed at determining the physico-morphological attributes, in vitrofertilityand their interrelationships in semen of sahiwal bulls. semen samples werecollected weekly for 6 weeks from ten mature sahiwal bulls divided randomly into 5 groups. the mean (±sem) of ejaculate volume (ml), mass activity (score 0-5), progressive sperm motility (%), sperm concentration (106/ml), live sperm (%)...

Abstract The aim of this study was to evaluate the effect pen stocking density on animal performance, social behavior, and dirtiness in fattening bulls. Two hundred sixty-three bulls (250 ± 24.7 kg BW, 193 13.2 d age) were group-housed fed concentrate unprocessed straw separately, both ad libitum. Animals assigned one 2 different treatments: 1) LOW (n=112), 14 bulls/pen (5.1 m2/bull 5 bulls/fee...

The objective of this investigation was to determine the extent to which the sexual performance of adult bulls (18 to 24 mo of age) can be predicted by prepuberal sexual behaviors. Tests were administered to 121 polled Hereford bulls to determine whether adult sexual performance (especially serving capacity or ejaculation rate) was related to 1) whether or not the subjects mounted estrous femal...

Selection or replacement of a herd bull is an important decision for cow-calf producers. To justify the price paid for a bull, cattlemen may utilize several criteria. They must also determine if the specific selection criteria used add or detract from the value of a particular animal. The study reported here evaluated 13 years of data presented to bull buyers at a graded bull auction in Florida...

Thirty male reindeer; n= 6 bulls (control treatment) and n= 4 steers (castrated males) were used to evaluate the effects of early castration on carcass yield and meat quality attributes. The reindeer were castrated at 2 and 3 months of age, and then slaughtered at 2 and 3 years of age. Live weights and carcass weights were significantly highest in the 3 year old bulls and steers. Dressing perce...

Testicular fine needle aspiration cytology (FNAC) is widely being used in humans to evaluate the functional testicular mechanism, but its application is very limited in animals especially breeding bulls. This preliminary study was conducted to assess the effect of testicular fine needle aspiration (FNA) technique on testicular biometry and seminal characteristics in Karan Fries crossbred bulls....