This study examined the effects of injectable vitamin and trace element combination during transition period on clinical-biochemical parameters reproductive performance in Brown Swiss dairy cows. Sixty multiparous cows were randomly allocated two groups as element-vitamin treated (n=30) control (n=30). Animals received four injections at beginning dry period, 21 days before parturition, day pos...

Groups of adult lactating Border Leicester cross Merino ewes which had lambed in the spring and had been milked mechanically after the lambs had been weaned at birth, were joined with Dorset Horn rams approximately 60 days after parturition. The ewes had been treated with progestogen sponges and pregnant mare’s serum gonadotrophrin (750 and 1500 I.U.) prior to the time of first or second expect...

A 5-yr study involving 45 to 78 pregnant Hereford range cows each year evaluated relationships among prepartum nutrition, body condition scores, BW changes and reproductive performance. Four prepartum nutritional treatments were imposed. One group of cows were fed to maintain (M) their November BW until calving in March and April. The other three groups of cows were fed to lose about 5% of thei...

In this case, semen that handled by urethral catheterization was deposited into the deepest point of vagina an anesthetized queen. Intravaginal artificial insemination applied on 2nd day onset oestrus and only single performed. Insemination time determined behavioural cytological evaluations. Two healthy kittens were obtained 62 days after insemination. The case has important reports in terms b...

Materials and methods: A total of 166 sows at two farrow-to-finish farms in Italy were tested for Salmonella shedding at four stages of reproduction. Sows were divided into three groups: primiparous (farrowed one litter), pluriparous (two to five litters), and old sows (> 5 litters). Fecal samples were collected approximately 2 weeks before parturition (Late Gestation), 1 and 3 weeks after part...

This study was undertaken with the aim to establish a reliable radioimmunoassay (RIA) system for urinary pregnanediol glucuronide (PdG) and to employ it for monitoring the reproductive status of dairy cows. Urine and blood samples were collected from the Holstein cows both pregnant and non-pregnant. The samples were then investigated for evaluating the relationship between progesterone (P4) in ...

In this study, it is aimed to determine the length of estrus cycle, size of the preovulatory follicle, and ovulation time during the postpartum period (pp) in Anatolian jennies and to measure steroid hormone levels during the same period. Five healthy Jennies at late-stage of gestation were included in the study. During the post partum period, plasma progesterone (P4), total estrogen (E2) and 2...

In dairy cows, milk yield increases rapidly after parturition until a peak at around wk 6 of lactation. However, the description of the shape of the lactation curve is commonly based on weekly average milk yields. For a more detailed analysis of the milk production curve from the very beginning of lactation including the colostral period and the effect of colostrum yield on further lactational ...

Polyunsaturated (PUFA) long-chain fatty acids (LCFAs) are more potent in eliciting molecular and tissue functional changes in monogastrics than saturated LCFA. From -21 through 10 days relative to parturition dairy cows were fed no supplemental LCFA (control), saturated LCFA (SFAT; mainly 16:0 and 18:0), or fish oil (FISH; high-PUFA). Twenty-seven genes were measured via quantitative RT-PCR in ...