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.
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Showing 1 to 20 of 41 for “"friesian"”.
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Experimental ammonia toxicosis in Holstein-Friesian steers
Thesis (M.S.)--Michigan State University. Dept. of Veterinary Surgery and Medicine, 1969
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Evaluation of Negative Energy and Mineral Balance in Periparturient Holstein-Friesian Cattle
… and multiparous periparturient Holstein-Friesian cattle.</p>
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Evaluación de tres tipos de dietas (calostro: leche) en terneras holstein friesian bajo crianza artificial
El presente trabajo se realizó en la Empresa Genética Roberto Alvarado (Chiltepe), ubicada en la península de Chiltepe, en el departamento de Managua, con el objetivo de establecer la mejor forma de suministrar dietas liquidas, establecer la asociación entre los niveles de calostro con los …
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Prediction of parturition and dystocia in holstein-friesian cattle, and cesarean section in dystocic beef cattle
… incidence of dystocia in late gestation Holstein-Friesian cattle. The ratio of the calf hoof circumference to the maternal intrapelvic area was identified to have clinical utility in predicting the calving difficulty score. The second study, presented in chapter four, assessed the changes in …
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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 …
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Evaluación productiva y reproductiva de la raza holstein friesian canadiense bajo explotación intensiva en el trópico seco de Nicaragua
… productivos y reproductivos del hato Holstein. Friesian Canadiense existente en el distrito tres de la Empresa Genética "Roberto Alvarado" (Chiltepe); ubicada en el Departamento de Managua, Nicaragua, a una latitud 12º 14' y una longitud de 86º 25' y a una elevación promedio de 49 msnm, con una …
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Prevalencia del carcinoma escamoso ocular y sus precursores en un hato lechero nicaraguense, relacionado con raza, edad y pigmentación
… 4108 animales de los grupos raciales Holstein Friesian (Canadiense), Holstein Friesian (Criollo), Holstein x Pardo, 75% Holstein y Pardo Suizo. Se determinó que la prevalencia total del cáncer en la población analizada es de 2.6%. Además que existe presencia de lesión únicamente cuando existe …
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Nutritional and genetic characterization of dairy cows managed on pasture-based systems, identifying key aspects to improve their performance
… and protein production using data from Holstein-Friesian and Jersey cows from Chile managed under pasture-based systems, identifying mechanisms that could be used to direct further model improvements, 4) to identify the different dairy breeds and their crosses that are used in the Chilean dairy …
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Identifying nutritive, physical and volatile characteristics of oaten and lucerne hay that affect the short-term feeding preferences of lactating Holstein Friesian cows and Thoroughbred horses.
… value‟ of the hays for lactating Holstein Friesian cows and Thoroughbred horses. The project aimed to (i) quantify preference values for a large number of oaten hays with dairy cows and horses and a similarly large number of lucerne hays with horses only, and (ii) develop predictive …
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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 …
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Genetics of disease resistance: Molecular characterisation of the major histocompatibility Complex Class II genes in Bos species of different origin : A thesis submitted in partial fulfilment of the requirements for the Degree of Master of Science at Lincoln University
… (n = 11) from Nigeria, and New Zealand Holstein-Friesian x Jersey-cross (n = 40) were genotyped for variation in exon 2 of BoLA-DQA1. In addition: Yak (n= 47); 13 breeds of cattle including White Fulani (n = 30), Red Bororo (n= 20), and White Fulani × Holstein-cross (n = 16) from Nigeria; …
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Effect of Lolium perenne L. ploidy, Trifolium repens L. inclusion and cow breed on the productivity and profitability of pasture-based, spring-milk systems
… Three cow genotypes were analysed; Holstein-Friesian (HF), Jersey × HF (JEX) and a 3-way cross consisting of 50% Norwegian Red, 25% Jersey and 25% HF (3WAY). Thirty cows (ten of each genotype) were assigned to each grazing treatment and swards were rotationally grazed after calving in spring …
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A Genome Scan for Quantitative Trait Loci in Dairy Cattle
… 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. Quantitative trait …
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Effects of stocking rate and supplementation on pasture utilization, cow performance, and rumen environment in a pasture-based and automatic milking system
… States Holstein (USH) and New Zealand Holstein Friesian (NZF). The HSR treatment received a partial mixed ration (PMR; 40% ground corn and 60% legume grass haylage) in variable amounts (average: 4.86 kg /cow; ± 0.14; mean and SEM) to supplement deficits in pasture growth rate and availability. …
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