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Full-Text Articles in Sheep and Goat Science
Alternative Treatment Options For Controlling Anthelmintic-Resistant Haemonchus Contortus Populations In South Dakota Sheep Herds, Adam Sarah
Electronic Theses and Dissertations
Haemonchus contortus is a common economically important gastrointestinal nematode that obliges the survival and productivity of small ruminants, especially sheep and goats. Anthelmintic resistance is a primary challenge in ruminant health management programs in preventing and controlling the H. contortus populations; therefore, there is a great necessity in finding and developing natural plant products for use as alternatives to commercial anthelmintics for controlling H. contortus in pastured sheep and goats. This dissertation has three major aims conducted in three separate studies: the first in vivo one was to evaluate the extended effect of a springtime, combined-treatment with 3 anthelmintics having …
Effect Of Pre-Marketing Management Practices On Shrink Loss In Lambs, Ann Kolthoff
Effect Of Pre-Marketing Management Practices On Shrink Loss In Lambs, Ann Kolthoff
Electronic Theses and Dissertations
Two experiments were conducted to evaluate the effects of three common lamb pre-marketing management practices on live weight shrink loss. Additionally a producer survey was conducted to assess current marketing practices in the North Central region of the US. In these experiments, Exp. 1 (feeder lambs) and 2 (finished lambs), 60 commercial Polypay lambs (Exp. 1: 37.65 ± 0.30 kg of BW; Exp. 2: 52.56 ± 0.14 kg of BW) were allocated for each experiment to 3 treatment groups (n=20 lambs) in a 3 x 3 Latin square design. Treatments were the pre-marketing practices: original pen (ORG), transition pen (TRANS), …
Studies On Beneficial And Adverse Effects Of Dietary Buffers For Lambs, Jong Kyu Ha
Studies On Beneficial And Adverse Effects Of Dietary Buffers For Lambs, Jong Kyu Ha
Electronic Theses and Dissertations
Experiments using lambs were conducted to study the effects of buffers or roughages against acidosis occurring during rapid dietary changes. Experiments using rats were conducted to investigate vitamin A and thiamin stability and/or utilization as influenced by bentonite. Incubating rumen fluid in vitro at a pH lower than 6 reduced volatile fatty acid (VFA) production and increased lactate accumulation. Limestone or bentonite at levels of 2% in 92% concentrate diets had little effect on feed intake or rumen and blood parameters during a 7-day treatment period using rumen-canulated sheep. However, 2% NaHCO3 increased rumen pH and feed intake on …
Flumethasone Induction Of Parturition In The Ewe, Donald H. Rommereim
Flumethasone Induction Of Parturition In The Ewe, Donald H. Rommereim
Electronic Theses and Dissertations
The idea of controlling the time of parturition in domestic mammals has arisen in the last 15 years from the development of techniques of estrous synchronization and from studies achieved on the mechanism of birth. Controlling the time of parturition is a management technique by which a producer might reduce livestock losses at birth and/or cut production costs. Birth for the new-born, or parturition for the mother is a critical time. Controlling the time of parturition allows the producer to exercise a constrained supervision at this critical time, and therefore limit possible losses. Being present at birth allows the producer: …
Pregnancy Diagnosis In The Ewe, Michael J. Trapp
Pregnancy Diagnosis In The Ewe, Michael J. Trapp
Electronic Theses and Dissertations
The ability to diagnose pregnancy accurately, rapidly and economically before the last six weeks of gestation in the ewe could be of real value as a sheep management tool. An efficient non-surgical pregnancy test could enable the producer to reduce feed costs, increase percent lamb crop and select for fertility. It is important to the health of the ewe and to the survival of the lamb that highly productive animals should be adequately fed. About 75% of the fetus' growth occurs during the last trimester of pregnancy. Therefore undernutrition of the ewe during this part of pregnancy leads to the …
A Comparison Between Crossbred And Straightbred Production Of Targhee Range Ewes, James M. Pajl
A Comparison Between Crossbred And Straightbred Production Of Targhee Range Ewes, James M. Pajl
Electronic Theses and Dissertations
This investigation was initiated. to determine the effect of crossbred vs. straightbred production under the environmental conditions found at the Antelope Range Research Station, Buffalo, South Dakota.
Induction Of Parturition In The Ovine, Ernest L. Harman
Induction Of Parturition In The Ovine, Ernest L. Harman
Electronic Theses and Dissertations
The effects of flumethasone and prostaglandin F2 (PGF) on the time of parturition were studied in the ewe. Pregnant ewes with known conception dates were allotted into a 3 x 3 x 2 factorial designed experiment (1973 study) and into a completely random designed experiment (1974 study). In the 1973 study treatments consisted of three hormones (flumethasone, PGF and saline control), three levels (low, .5 mg flumethasone, 5 mg PGF, 1 cc saline; medium, 1.0 mg flumethasone, 10 mg PGF, 2 cc saline; high, 1.5 mg flumethasone, 15 mg PGF, 3 cc saline) and two routes of administration (IM …
The Apparent Digestibility By Sheep Of Prairie Hay Harvested At Three Stages Of Maturity, Robert Manseau Jordan
The Apparent Digestibility By Sheep Of Prairie Hay Harvested At Three Stages Of Maturity, Robert Manseau Jordan
Electronic Theses and Dissertations
Grass is the greatest asset of the Northern Great Plains. Grass does and must serve as the basic feed for the flocks and herds of this area. Without grass, much of the Northern Great Plains would be waste land with little or no value. In the states of North and South Dakota, Nebraska, Colorado, Wyoming, and Montana, about 67 per cent of the total land is in pasture and hay. Seventy five to 95 per cent of the total feed needed by cattle and sheep in the Northern Plains states is furnished by pasture and roughage. With an ever-increasing demand …