The Romane sheep breed proved to be adapted to harsh conditions with high prolificacy and lamb survival in outdoor farming, even under bad climate conditions. This breed shows large variability in its fleece type at birth and it has been suggested that lamb survival could be related to birthcoat type. The aim of the present study was to: i) characterize the coat of the lamb at birth and quantif...

A literature review was made of the influence of nutritional factors on the fatty acid composition of fat deposits and muscles of lambs. A bibliographic data base, containing 979 observations from 108 papers, was made up in such way that one observation corresponded to one group of lambs in one experiment. Each nutritional factor was studied only when number of observations was sufficient. Cons...

Greenwood, S. L., Steele, M., AlZahal, O., Hook, S. E., Swanson, K. C. and McBride, B. W. 2010. Differential regulation of components of the apoptotic and ubiquitin-mediated proteolytic pathway in slowand fasttwitch muscle type in lambs receiving increasing amounts of dietary non-structural carbohydrate. Can. J. Anim. Sci. 90: 421 428. Non-fibre carbohydrate (NFC) rich diets are commonly fed in...

Ibe, Basil O., Fred C. Sander, and J. Usha Raj. Platelet-activating factor receptors in lamb lungs are downregulated immediately after birth. Am J Physiol Heart Circ Physiol 278: H1168–H1176, 2000.—Platelet-activating factor (PAF) is a phospholipid with diverse biological functions mediated by a G protein-coupled receptor. We determined PAF receptor binding in lung membranes of four groups of p...

\je in\.estigated predation on lambs by bobcats (Lynr mfusi relative to coyotes car ti.^ lntrcit~s) horn J~ ine 1994 through November 1995 at Hopland Kesearcli and Extension Center (HREC) in north-coastal C;alifornia, where both predators occur at equally high densities. Larnh losses during this study were t)pical for HKEC and surrounding ranches and inciuded 64 (5.3% of lambs pastured) confirm...

The two main genotypes of recognized isolates of Mycobacterium avium subsp. paratuberculosis (Map) are cattle (C) and sheep (S) strains. An experimental infection was conducted to establish the effect of Map strain on the pathogenesis of ovine paratuberculosis. Twenty-four out of thirty 1.5-month-old Assaf lambs were divided into 4 groups of 6 and infected orally with three low passage field is...

The effect of the application of winter supplementation (experiment A), deworming (experiment B) and foot trimming (experiment C) in three sheep breedsfound in the Chiloé Archipelago (Chile): Chilota (CH), Romney Marsh (RM) and Suffolk Down (SD) was evaluated with the aim of assessing the productive performance of the exotic breeds (RM and SD) in relation to the native one (CH) under the agro-e...

An 8-wk growth trial was conducted to assess the effects of continuous infusion of thyrotropin-releasing hormone (TRH) and an active TRH analog less than Aad-His-Pro-NH2 (the less than Aad is L-pyro-alpha-aminoadipic acid) on growth trial performance, carcass composition and hormone profiles of growing lambs. Both drugs were infused at 600 micrograms X lamb -1 X d -1 with 16 lambs/treatment. Bo...

The objective of this experiment was to compare vaccination schedules for ewes and their lambs to raise antibody concentrations to epsilon-toxin of Clostridium perfringens, the causative agent of enterotoxemia. Half of 200 Finnsheep x Dorset ewes were vaccinated with C. perfringens type D toxoid vaccine 3 wk before lambing. Serum samples were obtained from 20 ewes that were to be vaccinated and...

Maternal water restriction and the accompanying dehydration-induced anorexia may induce long-term physiological changes in offspring. We determined the impact of prenatal hypertonicity (Pre-Dehy) on offspring cardiovascular and osmoregulatory function. Pre-Dehy lambs were exposed to in utero hypernatremia (8- to 10-meq increase; 110-150 days of gestation) induced by maternal water restriction. ...