The objective of the present study was to delineate how interactions between feeding sunflower oil (SFO) to partially defaunate the rumen and altering dietary ruminally fermentable carbohydrate may alter urea-N kinetics and N metabolism in lambs. In a 4 × 4 Latin square with a 2 × 2 factorial arrangement of treatments, four Suffolk ram lambs (61·5 (se 4·0) kg) were used. Treatments were 0 ( - S...

This study was carried out to evaluate the effect of high dietary energy as dry fat and protected methionine on growth efficacy, feed intake and efficiency and carcass parameters of Awassi lambs during finishing stage. Twenty four Awassi lambs (3-4 months old) were distributed equally into four treatments groups as follow: Control (NRC requirements); T1 (High energy 3.0 Mcal ME/kg); T2 (high en...

effects of partial docking on feedlot performance and body fat characteristics were studied in a fat-tailed sheep breed. thirty-eight male lambs with an average weight of 4.44 ± 0.48 were randomly divided into two groups. the lambs in one group were partially docked at 3-4 h after birth, using rubber rings, and the lambs in another group remained intact (control). after weaning, 20 male lambs f...

the present study was performed to evaluate the on-station growth performance of local and dorper × local crossbred sheep in eastern amhara region, ethiopia. data on 302 lambs collected over a 4-year period (2009 to 2012) on local and dorper × local crossbred sheep at sirinka breeding, evaluation and distribution site were used in this study. fixed effects considered were breed, lamb sex, birth...

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...

Thirty-two crossbred (Suffolk x Rambouillet) wether lambs were used to examine the effectiveness of protein source (soybean meal [SBM] or fish meal [FM]) in alleviating decreased performance associated with dietary aflatoxin (AF) in growing lambs. After a 21-d adaptation period to concentrate diets, lambs were assigned to the following dietary treatments: 1) SBM, 0 mg of AF; 2) FM, 0 mg of AF; ...

The objective of this research was to compare the growth performance, incidence of prolapse and mortality, carcass characteristics, blood hormone concentration, and N balance of lambs implanted with increasing dosages of zeranol. One hundred forty-four crossbred lambs (29.6 ± 4.9 kg) were used in a completely random design and placed into 16 feedlot pens (4 pens/treatment) for a 116 d finishing...

In the current study, twenty lambs, aged 4 months, half male and female, were classified into four groups, with five in each group. The experimental three groups of lambs given intravenous (IV), intramuscular (IM) subcutaneous (SC) administrations recombinant ovine interferon-τ (roIFN-τ). fourth group (normal control) was normal saline injections same way. After administrations, blood samples c...

We conducted this study to determine the level of immunity after vaccination of lambs with whole bodyEchinococcus granulosus. To do so, 200 mature E. granulosus parasites, which were kept in 10% formalinefor 8 months, were obtained from the Department of Parasitology, School of Veterinary Medicine, FerdowsiUniversity of Mashhad. The soluble protein of the parasite was prepared. The sample was h...

in this research, effects of adding methafix (containing malate and fumarate as organic acids) with or without monensin in diet of fattening farahani lamb's on performance, and plasma concentration of some metabolites and minerals were investigated. twenty-four male lambs (4-6 months old, 35.9 ±7.4 kg) were randomly  assigned to; 1) control diet (control), 2) control with 24 mg of monensin...