Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"Holstein-Friesian cattle"”.
-
Evaluation of Negative Energy and Mineral Balance in Periparturient Holstein-Friesian Cattle
… and it is more frequently seen in multiparous cattle due to their high milk production. A large amount of fat and protein is mobilized in order to address the energy deficit during the periparturient period. The ability to accurately monitor energetics and electrolytes status using accurate, …
-
Prediction of parturition and dystocia in holstein-friesian cattle, and cesarean section in dystocic beef cattle
… loss. It is more frequently seen in primiparous cattle compared to their multiparous counterparts due to their smaller stature and the slow maturation of pelvic dimensions. In some instances, human intervention of the parturition process is imperative to avoid pain, injury, and mortality of the …
-
An investigation of families and breeding lines of Holstein-Friesian cattle in relation to advanced registry records
De Kol 2d, Pietertje Hengerveld and Belle Koendyke each have two daughters. For each daughter the following number of grand daughters are found. For Belle Korndyke 93.5, De Kol 2d 81.5 , and Pietertje Hengerveld 60.5. The following number of great-grand-daughters may be attributed to each …
-
BoLA Class II Genes: Polymorphism, Disease Association and Linkage Relationships With the Prolactin and Bola-A Genes
Holstein Friesian cattle of known BoLA-A genotype were used to determine whether resistance or susceptibility to persistent lymphocytosis (PL) caused by the bovine leukemia virus is more closely associated with class II genes of the BoLA complex than with BoLA-A. Polymorphisms of BoLA-DQB and -DRB2 …
-
A Genome Scan for Quantitative Trait Loci in Dairy Cattle
… health and conformation traits was completed in Holstein-Friesian cattle using a granddaughter design. Eight half-sibling families consisting of 1,068 bulls were genotyped for 174 microsatellite markers. The markers provide coverage of 2,500 cM or approximately 85% of the cattle genome. …
-
Social bonds in dairy cattle: the effect of dynamic group systems on welfare and productivity
… the UK dairy industry has led to the majority of cattle in the UK being housed in large, dynamic groups. Proposals for two large-scale dairies intending to house between 3,000 and 8,000 head of cattle have been met with considerable opposition by both producers and the public alike. Recent reports …
-
Experimental ammonia toxicosis in Holstein-Friesian steers
Thesis (M.S.)--Michigan State University. Dept. of Veterinary Surgery and Medicine, 1969
-
Weighting components of type in classifying Holsteins
Thesis (M.S.)--Michigan State University. Dept. of Dairy, 1967
-
Effects of severe cattle treading on soil physical properties and pasture productivity
Severe cattle treading can result in compaction and pugging, of which the latter was the focus of this thesis. Pugging is one of the severest forms of treading damage to soil, and occurs when soil is grazed while near saturation, resulting in plastic and liquid soil deformation. The research …
-
The Influence of Artificial Insemination in Three Midwestern States
<p>Increased productivity of dairy cattle depends in part upon genetic changes brought about by select ion. Because of the long generation interval and low reproductive rate, genetic improvement in dairy cattle is slow. For this reason, the accuracy and effectiveness of selection of sires is of …