Encyclopedia Of Animal Science - F ppt

... hydro- lyze specific plant tissue surfaces of PDF. [4] Digestion of PDF is via erosion from the surface attachment site. Therefore, rate and extent of digestion of PDF are func- tions of 1) the ... substitution of a quan- tity of one AA for the same quantity of another. Any departure from a desirable pattern of AA can result in, among other things, a reduced efficiency of...

Ngày tải lên: 02/07/2014, 00:20

... by anywhere from five to a few dozen QTL. For the most part, effects of individual QTL are in the range of 1 to 3% of the trait mean. In some instances, the mapped QTL as a group are able to account for ... fraction of the QTL responsible for genetic variation in the traits of economic importance in farm animals and identifying the QTG underlying the mapped QTL are now the major cha...

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... measure of flock fertility and is the basis for strategies of nutrition and feeding, utilization of labor, and facilities. Improper management of pregnant ewes often leads to pregnancy toxemia from ... then performance and pig health will be negatively affected. Feeding System Growth rates are determined by the ability of pigs to eat. The type of feed, presentation of feed, and...

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... Century Concepts Important to Meat Animal Eval uation, University of Wisconsin, Madison, WI, Feb. 1991; Kaufmann, R.G., Ed.; Department of Animal Science: University of Wisconsin, Madison, WI, 1991; ... to time and therefore can be measured in terms of distance and tissue depth. EARLY EQUIPMENT The ultrasonic reflectance technique A-mode was used for the evaluation of fat thic...

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... depends on application of scientific knowledge of many aspects of the biology of the animals we keep. Environmental aspects of animal care are based on application of principles of animal ecology in ... in these mat- ters. The fundamental principles have been set forth here. REFERENCES 1. Duncan, I.J.H. Feelings of Animals. In Encyclopedia of Animal Rights and Anima...

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... includes modification of offspring responses to stress, and even the subsequent expression of maternal behaviour by the offspring. ARTICLES OF FURTHER INTEREST Domestication of Animals, p. 294 Pregnancy: ... the survival of her offspring. What is required to ensure offspring survival is influenced by the riskiness of the environment and the degree of development or vulnera- bili...

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... CLA observed with fish oils and feeding fresh pasture cannot be fully explained in terms of their PUFA content. Therefore, other factors or components of these feeds must affect Fig. 1 Structures of two ... cortisol), growth factors [e.g., epidermal growth factor (EGF), insulin-like growth factor I (IGF-I), insulin-like growth factor II (IGF-II), transforming growth factor (TGF)-b1, and...

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... elsewhere. [1] STATE -OF- BEING ISSUES FOR DAIRY CATTLE Several issues have arisen about the state of being of dairy cattle in agricultural production systems. A review of the status of these matters as of 2004 follows. Absence ... much protein. DIETS FOR DUCKS The composition of feed that is appropriate for ducks at different stages of their life is shown in Table 1. Feed for d...

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... of FSH caused by the loss of negative feedback of the hormone inhibin (origin Graafian follicle). [1] Rise in FSH following ovulation recruits ovarian follicles into the developing pool for future ... Concentration of estrogen peaks either shortly before or after the initiation of behavioral estrus ex- pression (Fig. 1). Increased production of estrogen from the multiple 7 8-mm fo...

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... ‘‘environment’’). HERITABILITY Additive effects are tied to individual alleles, which are passed from parent to offspring. Dominance and epistatic effects arise from combinations of alleles and are not passed from parent to offspring ... contribute to the effectiveness of selection. How- ever, dominance effects those that result from certain gene combinations that influence performance ov...

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