To study the impact of body condition score (BCS) ewes on weight (BW) and gain (BWG) lambs effect weaning age BW BWG lambs, thirty Awassi (2–3 years old) with their borne male were used in study. Ewes condition-scored assigned to three groups, 1st, 2nd 3rd groups BCS 2.5, 3 3.5 respectively. Lambs weaned neither 60 or 90 days (5 for each), lasted days. The analyzed data showed significant (P≤0....

We hypothesized that lambs discriminate the postingestive effects of P and associate those effects with feed flavor to modify feed choices. Three predictions were tested based on this hypothesis: 1) lambs will modify preference for arbitrary flavors eaten during intraruminal infusions of NaH2PO4, 2) changes in preferences are more specific than changes in osmotic load induced by salts of Na; an...

This study was conducted to quantify differences in feed efficiency among 4 sire breeds using records from 1,109 crossbred lambs over 3 yr. Lambs were produced from mating Columbia, USMARC-Composite (Composite), Suffolk, and Texel rams to adult Rambouillet ewes. After weaning, lambs were finished on a high-energy diet in group-fed pens. Efficiency was assessed at 45 and 90 d on study, 50 and 60...

To investigate the influence of maternal Se supply and plane of nutrition on lamb morbidity, mortality, and passive transfer of IgG, pregnant ewe lambs were used in 2 experiments with 2 × 3 factorial treatment arrangements. Supplementation of Se began at breeding and was either adequate Se (ASe, 9.5 μg/kg of BW) or high Se (HSe, 81.8 μg/kg of BW) in Exp. 1 or ASe (11.5 µg/kg of BW) or HSe (77.0...

Female reproductive trait were studied in four pure breeds (the Finnsheep, Suffolk, Targhee and Minnesota 100), the F1 crosses between Finnsheep rams and females of the other three breeds and F2 and backcross ewes. Precocity of sexual development, defined as the percentage of ewe lambs lambing at 12 months of age, was measured in 709 ewe lambs in 4 years. Lambing and weaning rates were measured...

The effects of finishing system on growth performance and carcass composition were determined in an experiment using 40 crossbred, early-weaned lambs (28 kg BW). Finishing systems were 1) grazed alfalfa, 2) 100% concentrate diet fed in drylot, and 3) grazed ryegrass for 42 d followed by a 100% concentrate diet fed in drylot. All lambs were fed to similar final weights (48 kg). Average daily gai...

Failed alveolar formation and excess, disordered elastin are key features of neonatal chronic lung disease (CLD). We previously found fewer alveoli and more elastin in lungs of preterm compared with term lambs that had mechanical ventilation (MV) with O(2)-rich gas for 3 wk (MV-3 wk). We hypothesized that, in preterm more than in term lambs, MV-3 wk would reduce lung expression of growth factor...

traditional raw milk cheese is one of the most consuming cheeses in the world. kurdish cheese is a semi-firm, traditionally made in the east of iran. it is manufactured from raw sheep or cow milk and kept in goat’s skin bags during ripening period. as a result kurdish cheese is often more complex in different varieties of microorganisms, which whose organoleptic properties make it highly esteem...

beta-Adrenergic receptor downregulation is the end result of cellular adaptation to prolonged agonist exposure. The factors mediating receptor downregulation include receptor phosphorylation, receptor movement from the plasma membrane to intracellular sites, and alterations in nascent receptor synthesis. We have previously demonstrated a downregulation of the left ventricular beta-receptor duri...

Little is known of the physiological Na and K tissue changes from birth to adulthood in sheep and other livestock. The purpose of this study was to compare the changes in the sodium and potassium contents of liver, kidney and brain tissues in newborn lambs with those of growing and adult sheep tissues. Serum, Liver, kidney and brain tissue samples were taken from 32 newborn lambs, 20 growing la...