نتایج جستجو برای: weaning period however

تعداد نتایج: 2032765  

Journal: :Kansas Agricultural Experiment Station Research Reports 2021

A total of 28 litters (241 × 600, DNA) corresponding with 355 nursery pigs DNA; initially 13.0 lb) were used in 42-d trial (17-d pre-weaning and 24-d post-weaning). This was conducted to determine the effect providing a sensory attractant liquid (BlueLite Pro2Lyte; TechMix Global; Stewart, MN) suckling on underline sows after farrowing late lactation, weaning post-weaning feed intake growth. Tr...

Journal: :Journal of animal science 2006
C J Bracken R P Radcliff B L McCormack D H Keisler M C Lucy

The weaning to estrus and weaning to ovulation intervals in sows are controlled by ovarian follicular growth after weaning. Longer intervals could be caused by smaller diameter follicles at weaning that take more time to reach a preovulatory size. We addressed this hypothesis by decreasing the diameter of follicular populations before weaning and then measuring follicular development and interv...

2007
G. Z. Dong J. R. Pluske

The low feed intake immediately after weaning is responsible for villous atrophy and reduced growth rate in newlyweaned pigs. Overcoming this drawback will produce beneficial results for swine producers, and this warrants an understanding of the factors affecting the feed intake in newly-weaned pigs. In fact, a plethora of factors exert influences on feed intake in newly-weaned pigs, and these ...

Journal: :American journal of physiology. Gastrointestinal and liver physiology 2007
David M Frazer Sarah J Wilkins Gregory J Anderson

Intestinal iron absorption is extremely high in neonatal mammals but falls rapidly to adult levels following weaning. The aim of this study was to investigate the molecular basis of this elevated neonatal absorption using the rat as an experimental model. RNA was extracted from various sections of the intestine of 10-, 15-, 20-, 25-, and 300-day-old rats and the expression of the genes encoding...

2005
J. R. Pluske H. G. Payne I. H. Williams B. P. Mullan

Correct feeding and management of the young pig for optimum lifetime performance is a key goal of pig producers, although the associations between these variables are often difficult to quantify. It is well recognised that commercial growth rates of suckling and weaned pigs are less than those that can be achieved when pigs are reared independently of the sow and/or fed greater quantities of a ...

Journal: :Respiratory care 2016
Steven R Holets John J Marini

Weaning from mechanical ventilation involves the reduction or withdrawal of ventilatory support in proportion to the patient's ability to sustain spontaneous ventilation. Protocolized weaning has been shown to reduce weaning duration; however, its weakness lies in the reliance on human intervention. Automated weaning is theoretically superior to manual weaning because of its ability to rapidly ...

2016
Charlotte Cox Reinmar Hager

Parent-offspring conflict is predicted to occur because offspring will demand more parental investment than is optimal for the parent, and is said to be strongest during weaning when parents reduce nursing while offspring continue to demand parental care. While weaning conflict has been shown to be stressful in offspring, little is known about the effects of weaning conflict on mothers. We hypo...

Journal: :Journal of animal science 1985
S Newman D L Harris D P Doolittle

Twenty-seven crosses of mice derived from three random-mating, unselected strains (SWO, J. PGH) with 16 matings/pureline or cross were cohabited continuously and monogamously for a 365-d reproduction period to evaluate lifetime reproductive performance of the parents. Data from 3,249 litters born (2,792 surviving to weaning) were analyzed to study the effects of parity (number of litters) and t...

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