Báo cáo sinh học: "Selection response of growth rate in rabbits for meat production" pptx

... generation. Selection for growth rate started in 1980 for line B and in 1984 for line R. Young animals were selected according to individual weight gain (WG) from weaning (4 wk ... seasons INTRODUCTION Most breeding schemes concerning rabbits for meat production involve a specialized sire line selected exclusively on growth rate and 1...

Ngày tải lên: 14/08/2014, 20:20

... pathways in order to double mass while maintaining the same cell size distribution after cell division? In proliferating cells, with increasing growth rates, in addition to coordinating the length of ... measurements to gain insights into the importance of mitochondrial energy and nitrogen metabo- lism in affecting growth rates. These insights were possible only by integrating...

Ngày tải lên: 06/08/2014, 18:21

... However, offspring from those matings were not used for reproduction. Frequencies of the different types of matings and egg-layings obtained in each generation are shown in table ... sets for estimations. The question asked was how could a snail en- hance the growth of its offspring. Since there is no contact between the layer and it...

Ngày tải lên: 09/08/2014, 18:22

... also be appropriate for analyzing twinning rate. Observations of cows with an exceptional rate of twinning and of sires with an exceptional prepotency for twinning have been ... in the latter an increase in the number of offspring of genetically superior females may also be important (Frey, 1959). However, increasing twinning rate wil...

Ngày tải lên: 14/08/2014, 20:20

... mortality increases too much, as a result of a correlated change with OR, decline in ES will offset the increase in OR. For instance, for Pg OR , ES = -!!9 response in LS ... select for LS. Finally, b-ORLS and t-ORES are different ways of combining OR and ES performance. In b-ORLS, a direct estimation of the breeding values for...

Ngày tải lên: 09/08/2014, 18:21

... long duration of linear growth (fig 1) followed by a slow decrease. The position of the inflection point in terms of age confirmed the earliness of growth in geese (t + ... maturation rate of the curve (ie the relative rate at which A is reached), n = shape parameter determining the position of the inflection point of the cur...

Ngày tải lên: 09/08/2014, 18:22

... tip of the scutellum. For wing length a difficulty exists in defining the anterior basis of the wing. We used the middle part of the thoracic coast, in front of the ... 84-90 Waddington CH (1957) The Strategy of the Genes. Allen, Unwin, London Shape of the norms of reaction: variation of the slope and derivative curves For each...

Ngày tải lên: 14/08/2014, 19:22

... 0.008 Number of years in currency position 8.121 2 0.017 Primary formal qualification 41.916 4 0.000 Formal training 22.355 1 0.000 Informal training 1.492 2 0.474 Intention for further training 10.930 ... tasks. These include planning, organ- izing, leading and controlling. Planning involves defining goals and mapping out ways to reach them; organizing entails arranging and coordinatin...

Ngày tải lên: 18/06/2014, 17:20

... plans included either quitting the profession, work- ing abroad or pursuing further training in nursing. Results and discussion Given that it is difficult to achieve desirable response rates in ... citation purposes) remain, further increasing turnover [9]. The implications of these findings are therefore alarming for the provision of health care in South Africa now and in the...

Ngày tải lên: 18/06/2014, 17:20

... both for job motivation in general and for PA in particular, along with increasing learning outcome. However, training of both managers and employees in PA procedures may be a key condition for its ... learner’s perce p- tions of the demands of the situation, with the final shift in performance from that of the detached observer to that of the involved performer [70,71...

Ngày tải lên: 18/06/2014, 17:20