Guitartia tridentata n. gen., n. sp (monhysterida: xyalidae) and macrodontium gaspari n. gen., n. sp (chromadorida: microlaimidae), free-living marine nematodes from the Caribbean sea

Two new genera of free-living marine nematodes are described from the muddy bottom of Cienfuegos Bay, Caribbean Sea. Guitartia n. gen. (Xyalidae, Monhysterida) is characterised by three long tooth-like structures in the stegostom, second and third circle of anterior sensilla separate and posterior genital branch of the female restricted to a long post-vulvar sac. The type species is Guitartia tridentata n. gen., n. sp. Within the Xyalidae, Guitartia n. gen. is morphologically close to Amphimonhystrella, Cobbia, Elzalia, Scaptrella and Valvaelaimus, all being characterised by sclerotised structures in the stoma and transverse striation of the body cuticle. Main features for discrimination are the type of stoma structure, the shape and relative size of amphidial fovea, the presence of a post-vulvar sac and gubernacular apophyses and the absence of terminal setae on the tail. Macrodontium n. gen. (Microlaimidae, Chromadorida) is characterised by a heavily sclerotised stoma with one large dorsal tooth and two smaller subventral teeth, sexual dimorphism in size and position of the amphidial fovea and males with a single anterior testis. The type species is Macrodontium gaspari n. gen., n. sp. Within the Microlaimidae, Macrodontium n. gen. is similar to the genera Acanthomicrolaimus and Bolbolaimus due to sclerotised stoma and presence of large dorsal tooth. The new genus is similar to Aponema in sexual dimorphism in the size of the amphidial fovea, monorchic males, presence of a gubernacular apophysis and conico-cylindrical tail shape. Morphological characters of diagnostic value within the family are the ornamentation of the body cuticle, relative length of cephalic sensilla, stoma sclerotisation and number of testes

Mating and Management Systems for Commerical Beef Production

Recently there has been increased utilization of exotic cattle to increase production in beef herds. Larger calves at weaning and slaughter have resulted due to increased mothering ability and frame size. Hereford-Angus cows have been used extensively in South Dakota and have performed well under local conditions. This study was designed to compare reproductive performance and calf production of S x A and H x A crossbred cows under range conditions. Feedlot performance and carcass beef production have also been evaluated

Horn Fly Control on Range Beef Cattle

Over eleven hundred range cattle were treated with insecticide-impregnated ear tags and observed for horn fly control. Tagging rates compared were herds with one or two tags on each cow, two tags on part of the cows, one tag on half the cows, one tag on each calf (none on the cows) and fenvalerate versus permethrin as the insecticide in the tags. Results from all herds studied showed reductions of 90 to 100% for horn flues after 60 days of treatment for as long as 125 days

Ectrin Ear Tags for Horn Fly Control on Range Beef Cattle

Ectrin ear tags are insecticide-impregnated with the active ingredient fenvalerate (8%). They are approved for use on lactating dairy cattle, beef cattle and calves. Each time an animal turns on tosses its head, a layer of Ectrin is rubbed or falls off onto the animal. As one insecticide layter is rubbed off, another forms. This action continues for the life of the tag. Advantages to this type of horn fly control are tagging is quick and easy using the All-Flex specially designed pliers, dampness or rain has little effect on efficacy, and the fly control reservoir is carried and used by each treated animal. A random sample of 10 animals from each herd was counted using binoculars and looking out of a pickup window. Results are presented as an average number of horn flies/side of these 10 animals. An equal number of untreated or control animals was counted from a herd near the treated herd at nearly the same time. Problems of last tags or infected ears due to the tags were minimal

Evaluation of One or Two Lutalyse Injections for Estrous Synchronization in Beef Cattle

Researchers have been attempting to control estrous cycles in animals for the last 50 years. For the past several years, there has been considerable interest in the use of Lutalyse for estrous synchronization in beef cattle. For synchronization and artificial insemination to be successful, quality management and nutrition programs must be utilized. Some individual reports have indicated low reproductive performance can be accounted for by noncycling cows, poor management and semen handling techniques efficiency. This study includes data from the 1980, 1981 and 1982 breeding seasons using Lutalyse to synchronize estrous in beef cattle. The purpose of this research was to evaluate the effectiveness of Lutalyse on beef cattle using a single Lutalyse injection compared to two injections given 11 days apart

Fibrous refractory composite insulation

A refractory composite insulating material was prepared from silica fibers and aluminosilicate fibers in a weight ratio ranging from 1:19 to 19:1, and about 0.5 to 30% boron oxide, based on the total fiber weight. The aluminosilicate fiber and boron oxide requirements may be satisfied by using aluminoborosilicate fibers and, in such instances, additional free boron oxide may be incorporated in the mix up to the 30% limit. Small quantities of refractory opacifiers, such as silicon carbide, may be also added. The composites just described are characterized by the absence of a nonfibrous matrix

Mrs. H. M. Evers

Newspaper Article - 'Mrs. H. M. Evers' - Mrs. Evers hopes she can learn much about the living conditions here and the possibilities for the Dutch settlers.Alberta Women's Institutes; AWI CollectionMRS. H. M. EVERS I bring out his capital immediately and until such time as their cap­ital is released things are quite difficult. "' There are very few provinces in Canada that will sup­ply the Dutch settlers with a loan", Mr. Jensma stated. On her arrival here Mrs. Evers i was astounded at the unusua1. building of the city and the large • ields of wheat. " Of course we have wheat too, but ours is only a small country so we have to be very economical and not spend out land too freely". The buildings are much taller and narrower, es­pecially in the cities. Wood is very expensive so most of the homes are built of brick and concrete with corrugated steel and tile roofs. Give True Picture In her travels across the country Mrs. Evers hopes she can lenrn much about the living conditions here and the possibilities for the Dutch settlers so when she re- | turns to her homeland she will b- i able to give the women of Holland all the information possible and prepare them for their great ad­venture. Mrs. Evers and her family re­side on a 150 acre farm in the northern part of the country. Her daughter Tjaakje is a teacher in home economics and her son. Luken, works on the farm. Besides serving on the immigra­tion board she is a member of the international board of the YWCA; the international Council of Wo­men: international corporation of Dutch Country Wives: the inter­national organization of the As­sociated Country Women of thr World: and a member of the Wo­men's Institutes. She will leave on Tuesday for Toronto, where she will be met by Mr. W. Blome. who is with the Netherlands Immigration Board in Ottawa. A doctor declares the British people are taking 10.000,000 aspirin tablets a day