a total of 20 suckling sanjabi lambs, comprised of 10 males and 10 females with respective liveweights of 13.40±1.34 and 11.62±0.85 kg were employed in a 2x2 factorial experimental arrangement. the lambs within their sexes were grouped according to their liveweights and then randomly allocated to either one of the two treatments namely: ad libitum good quality alfalfa hay plus free suckling (co...

HEYDRICK, FRED P. (Fort Detrick, Frederick, Md.), RALPH F. WACHTER, AND HENRY J. HEARN, JR. Host influence on the characteristics of Venezuelan equine encephalomyelitis virus. J. Bacteriol. 91:2343-2348. 1966.-Alterations in plaque size, virulence, and lipid content of Venezuelan equine encephalomyelitis (VEE) virus were examined for possible interrelationships among these properties during 10 ...

with specific toxic effects on the spreading elements of the organisms. The purpose of this note is to describe the transformation of strains of Proteus mirabilis to the L form of growth under the influence of sterile broth filtrates of antagonistic strains. The test organisms used in this study were selected by streaking opposite poles of nutrient agar plates with recent isolates of Proteus mi...

We investigated the tissue-specific effects of dichlorodyphenyltrichloroethane (DDT) isomers in adult and suckling newborn mice, using a novel mouse line engineered to express a reporter of estrogen receptor transcriptional activity (ERE-tkLUC mouse). The DDT isomers p,p'-DDT [1,1,1-trichloro2,2-bis(p-chlorophenyl) ethane] and o,p'-DDT [1,1,1-trichloro-2(p-chlorophenyl)-2-(o-chlorophenyl) ethan...

The objective of this study was to determine the effects of supplemented selenium (Se) on plasma cortisol, red blood cell glutathione peroxidase activity (RBC GSH-PX-1), concentration of immunoglobulin G (IgG) and body weight in pneumonic suckling calves. Ten Holstein suckling male calves were randomly allocated to two groups and fed either unsupplemented milk (control) or with milk supplemente...

The representation of the surfaces of the trunk was mapped in detail in a series of anesthetized adult female rats to assess cortical representational changes that might be induced in the SI cortical field by a major natural source of a differentially heavy schedule of tactile inputs: the stimulation of the rat ventrum in nursing behavior. Controls included virgin rats and postpartum age-matche...

It has been demonstrated that the neonatal suckling rat is more susceptible to endotoxin [lipopolysaccharide (LPS)]-induced colonic damage compared with weaned littermates. There is evidence to suggest that differences in the production of certain cytokines, including interleukin (IL)-4, IL-6, and IL-10, are associated with intestinal inflammation in children. We have examined the production, l...

Prolactin (PRL) gene expression and the synthesis and secretion of PRL were examined in ovarian-intact lactating rats suckling eight pups on 10 days postpartum. Plasma samples were assayed for PRL concentrations, and pituitary glands were analyzed for total PRL content and PRL mRNA levels. We found that suckling-induced hyperprolactinemia was associated with very high levels of plasma PRL and a...

There are several different milking management systems in Latin America, because Gir cattle are reputed to be easily stressed and not well adapted to machine-milking. This paper, therefore, provides an overview of hormone release and behavior during suckling and milking in Gir cows and their cross-bred offspring. Several experiments were performed to study oxytocin release during exclusive suck...