This study investigated the relative bioavailability (RBV) of zinc from different sources used as feed additives in ruminant nutrition based on Zn concentration and activity Zn-dependent enzymes lamb tissues. Thirty-two male lambs Improved Valachian breed (three months old) were randomly assigned to four dietary treatments. For 120 days, fed either total mix ration (TMR) providing 29.6 mg Zn/kg...

Spontaneous periodic breathing, although a common feature in fullterm and preterm human infants, is scarce in other newborn mammals. The aim of this study was to induce periodic breathing in lambs. Four 10-day-old and two <48-h-old awake lambs were instrumented with jugular catheters connected to an extracorporeal membrane lung aimed at controlling arterial PCO2 (PaCO2). Arterial PO2 (PaO2) was...

Research in the area of fetal programming has focused on intrauterine growth restriction. Few studies have attempted to examine programming mechanisms that ultimately lead to lambs with a greater potential for postnatal growth. We previously demonstrated that treatment of ewes with GH at the time of breeding led to an increase in birth weight. Therefore, the objective of this study was to deter...

Locoweed (Oxytropis sericea) is a toxic plant commonly found on rangelands in the western United States. The locoweed toxin is an indolizidine alkaloid, swainsonine that causes neurological and systemic damage. The objective of this study was to determine if feeding of locoweed to pregnant ewes during days 100–130 of gestation would affect lamb behaviour shortly after birth. Twenty yearling nul...

We aimed to determine the effect of relocation whole-plant corn silage (WPCS) with different fermentation profiles on ingestive behavior lambs. Twenty-four male Santa Inês lambs, were used in a completely randomized block design based initial body weight (17.5 ± 1.8 kg) for following treatments: CS: WPCS (not inoculated and not relocated); R-12h: relocated 12h; IR-12h: Lactobacillus plantarum R...

this study was conducted to determine the effects of feeding different levels of whole cottonseed (0, 5, 10 and 15 % wsc) on dry matter intake (dmi), live weight gain and feed conversion ratio (fcr), carcass efficiency and small intestinal morphology of arabi finishing lambs. thirty-six arabi male lambs (29.8±1.6 kg) were allocated to 4 groups according to a completely randomized design. the di...

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...