Eighteen wether lambs, surgically equipped with abomasal and ileal cannulae, were used in two metabolism trials. Two levels of dietary Mg (.1 and .2%) and three levels of K (.6, 2.4 and 4.8%, dry basis) were fed with a 2 x 3 factorial arrangement. Each trial consisted of a 10-d preliminary period, a 7-d collection of feed, feces and urine for determining mineral balance and a 6-d sampling of fe...

The aims of the present study was to determine whether or not abomasal damages occurs in calves with abdominal distention using by plasma pepsinogen levels and positivity fecal occult blood test (FOBT). In study, 30 (distention group) 15 clinically healthy (control group), aged between 1-90 days, were used. Collected samples all used levels, bovine specific ELISA. Fresh stool also taken from re...

background : although infection of dromedary camels with cryptosporidium spp. is rare in iran, it is considered a zoonotic threat to the keepers and herders of camels. thus we investigated the prevalence of cryptosporidium in these two hosts in yazd province, a semi-arid region in center of iran. methods : this study was conducted during 4 seasons (winter 2008, summer 2009, winter 2009 and summ...

In mammals, the absorption of monosaccharides from small intestinal lumen involves at least 3 sugar transporters (SugT): sodium-dependent glucose transporter 1 (SGLT1; gene SLC5A1) transports glucose and galactose, whereas glucose transporter (GLUT) 5 (GLUT5; gene SLC2A5) transports fructose, across the apical membrane of enterocytes. In contrast, GLUT2 (gene SLC2A2) transports all of these sug...

Forty crossbred beef steers (243 +/- 2 kg of BW) with ruminal and abomasal infusion catheters were used to test 2 hypotheses: 1) visceral mass is responsive to energy input and site of carbohydrate (CHO) infusion and 2) rate and site of adipose accretion are dependent on site of CHO infusion and complexity. Treatments included a pelleted, forage-based, basal diet fed at 161 (LI) or 214 (HI) kca...

Our primary objective was to determine the effects of abomasal infusion 16-carbon (16C) and 22-carbon (22C) fatty acids (FA) on apparent FA digestibility, plasma concentrations, their incorporation into milk fat in cows. secondary study 1-carbon donors choline l-serine these variables. Five rumen-cannulated Holstein cows (214 ± 4.9 d milk; 3.2 1.1 parity) were enrolled a 5 × Latin square experi...

Two experiments were conducted to assess the endogenous fraction of purine derivative (PD) excretion, urinary recovery, and intestinal digestibility of purines in Nellore heifers. For both experiments, 8 Nellore heifers fitted with ruminal and abomasal cannulas were allocated to two 4 × 4 Latin squares. The diets were based on corn silage and concentrate (60 and 40% DM basis, respectively); fec...

I . The effects on gastric secretion of altering the amount and type of food eaten were examined in sheep with fundic abomasal pouches and in sheep which also had the antral region of the abomasum isolated into a pouch or removed (antrectomy). Secretion, which was continuous in all preparations, was collected over 24 h periods, and daily determinations of its acid and pepsin concentrations were...

Twelve Tuli weaner steers aged 1 year were randomly subdivided into three groups of four animals and infected with different doses of Calicophoron microbothrium metacercariae. Each animal in Group I received a low dose (LD) of 5 000 metacercariae, Group II a medium dose (MD) of 15 000 metacercariae, Group III a high dose (HD) of 25 000 metacercariae and one additional animal was kept as an unin...