Conjugated linoleic acid (CLA) is produced in the rumen by isomerization of linoleic acid and has been shown to be anticarcinogenic. The objective of this study was to determine the effects of feeding dietary CLA to pre-ruminant lambs or linoleic acid-rich safflower oil to weaned ruminating lambs. Fat content, CLA content and fatty acid (FA) composition of diaphragm, leg, rib, subcutaneous (SC) adipose and liver tissues were determined. The triacylglycerol (TAG) fractions of the total lipid (TL) from the diaphragm, rib and SC adipose tissues were analyzed for FA composition and FA positional distribution. The phospholipid (PL) fractions of the TL were analyzed for FA composition. The positional (PL) fractions of the TL were analyzed for FA composition. The positional distribution of FAs of liver PL was determined. Tissue fat content was affected by diet only in SC adipose tissue. Dietary supplementation with safflower oil increased the fat content of the subcutaneous adipose tissue whereas CLA supplementation resulted in decreased (P<0.05) fat content. Dietary supplementation with safflower oil increased (P<0.05) the CLA content of tissues by more than 200% whereas dietary supplementation with CLA did not affect CLA content. Positional distribution analysis indicated that CLA tends was localized to the sn-1/3 positions of TAG and the sn-2 position of the liver PL. / xiii, 74 leaves : ill. ; 28 cm.

Thesis (Ph.D.)--University of Melbourne, School of Veterinary Science, 2007. / Typescript. Includes bibliographical references (leaves 161-178).

Thesis (M.Sc.)--University of Western Australia, 2005.

The aim of this diploma thesis is to evaluate the level of reproductive performance of Wallachian sheep. There were used data from the original kennel evidence and from the performance cracking. It is focused on fertilization, reproduction intensity, fertility and rearing lambs. Fertilization of Wallachian sheep was in between 89,5 99,4 percent. Reproduction was in between 141,4 158,1 percent. Level of rearing was in between 108,1 139,6 percent. There were born 972 lambs in years 2012 2016. The most lambs were born in the year 2016, it was 265 lambs. It is because there were the most ewes in the herd in the reporting period. There were born one lambs, twins and triplets. The most frequent were twins at a ratio of 49,9 percent. The less frequent were triplets at a ratio of 4,7 percent. Number of lambs does not depend on the age of ewes. The number of lambs in a the litter did not differ by lines.

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Photocopy of typescript. / Digitized by Kansas Correctional Industries

Call number: LD2668 .T4 1956 H39 / Master of Science

Call number: LD2668 .T4 1979 G53 / Master of Science

Call number: LD2668 .T4 1955 J64 / Master of Science

Orientador: Ciniro Costa / Resumo: O trabalho objetivou avaliar o desempenho, grau de infecção natural por helmintos gastrintestinais, variáveis hematológicas e análise econômica de borregas com duas estratégias de recria: um em semiconfinamento e outro em confinamento e posteriormente em semiconfinamento com duas taxas de lotação, em área de aveia preta proveniente de sistema integrado de produção agropecuária (SIPA). Foram utilizados 13 borregas da raça Corriedale por tratamento, sendo: T1) Semiconfinamento com menor taxa de lotação por área (686,4kg de PV/ha) durante 70 dias; T2) Semiconfinamento com maior taxa de lotação por área (1113,6kg de PV/ha) durante 70 dias; T3) Confinamento por 28 dias, seguido por semiconfinamento com menor taxa de lotação por área (686,4kg de PV/ha) durante 42 dias; T4) Confinamento por 28 dias, seguido por semiconfinamento com maior taxa de lotação por área (1113,6kg de PV/ha) durante 42 dias. Para as análises foram utilizados os comandos PROC MIXED e PROC GLIMMIX do SAS e as médias ajustadas pelo método dos quadrados mínimos foram usadas nas análises de comparações múltiplas (P ≤ 0,05). Os tratamentos 3 e 4 apresentaram melhor desempenho, maior consumo de matéria seca e menor contagem de ovos por grama de fezes, em relação aos tratamentos 1 e 2. Ao final do experimento, os animais apresentaram percentual médio de Haemonchus (73,1%), seguida por Trichostrongylus (11,4%) e Cooperia (3,9%). As espécies de helmintos gastrintestinais presentes foram: Haemonchus contortus, Trichostr... (Resumo completo, clicar acesso eletrônico abaixo) / Doutor