A Direct Feeding Method of Bioassay of Insecticide Residue in Soil with Drosophila1

1961 ◽  
Vol 54 (4) ◽  
pp. 822-824 ◽  
Author(s):  
P. R. Seerra
Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 789
Author(s):  
Magdalena Szyndler-Nędza ◽  
Małgorzata Świątkiewicz ◽  
Łukasz Migdał ◽  
Władysław Migdał

The popularity of meat from animals of native breeds is growing all over the world, due to consumer belief regarding its higher quality compared to meat from industrial farm animals. In addition, the living conditions (welfare) are of great importance for consumers. We observed the effect of different ways of keeping and feeding pigs of the same conservative breed on the quality of meat and its health benefits. The aim of the study was to compare the meat quality from pigs of the native Złotnicka Spotted breed, fattened intensively or extensively (with conventional farm-produced compound feed and acorns). The meat from free-range pigs extensively fed on silage and small amounts of acorns was characterized by a higher content of fat, which acts as a carrier for flavor and juiciness, as well as higher monounsaturated fatty acid (MUFA) content (p ≤ 0.05) and lower atherogenic, thrombogenic, and peroxidability indices (p ≤ 0.05). It may be stated that the meat quality of the native pig breed is significantly dependent on the housing and feeding method. A more beneficial effect on the quality of meat and its dietetic value, as well as its susceptibility to rancidity, can be obtained throughextensive pig feeding with roughage and the addition of acorns.


1967 ◽  
Vol 9 (2) ◽  
pp. 209-218 ◽  
Author(s):  
D. W. Holme ◽  
W. E. Coey

A trial designed to investigate the effects of two environmental temperatures, three feeding regimes and the interactions between them is described. A temperature of 72° F. was better than one of 54° F. for bacon pigs between 40 lb. and 200 lb. weight. The higher temperature resulted in faster growth, more efficient feed conversion and increased length of carcass. Other carcass characteristics were not significantly altered. Ad libitum feeding resulted in faster growth and fatter carcasses than restricted feeding, but did not have a significant effect on efficiency of feed conversion. When feed intake was restricted, feeding pigs once daily or twice daily resulted in similar performance and carcass composition.There was a significant interaction between environmental temperature and feeding method for average daily gain in that pigs fed ad libitum grew faster at the low temperature and pigs fed restricted amounts of feed grew faster at the high temperature. No other interaction reached significant levels.


SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A211-A212
Author(s):  
Émilie M Lannes ◽  
Samantha Kenny ◽  
Rebecca Burdayron ◽  
Karine Dubois-Comtois ◽  
Marie-Julie Beliveau ◽  
...  

Abstract Introduction Studies suggest that feeling pressure about parenting practices is related to higher levels of stress. However, little is known about the pressure mothers feel about infant sleep-related parenting practices. This is surprising, considering that mothers are often exposed to contradictory information about infant sleep. This exploratory study aimed to 1) identify the proportion of mothers of 6-month-old infants who report feeling pressure about their sleep-related parenting practices and 2) assess the relationships between demographic factors and perceived pressure, and between parenting practices and perceived pressure. Methods Fifty-four mothers of 6-month-old infants completed a demographic questionnaire and the Sleep Practices Questionnaire (SPQ). Mothers were asked, “Have you ever felt pressure about your parenting choices and practices related to your child’s sleep?”. Responses ranged from never to always. Linear regressions were conducted to assess the concurrent associations between demographic factors (maternal age, maternal education, parity) and perceived pressure, and between sleep-related parenting practices (feeding method, frequency of bed-sharing, picking up or not picking up the infant when he/she cries at night) and perceived pressure. Results Analyses revealed that 5.6% of mothers reported feeling pressure constantly, 20.4% reported feeling pressure quite often, 46.3% reported feeling pressure sometimes, and about a quarter (27.7%) reported feeling pressure rarely or never. Lower maternal education and breastfeeding were associated with feeling more pressure about sleep-related parenting practices (p < .05). Furthermore, mothers reporting that they (or their partner) pick up their infant when he/she cries at night were more likely to report feeling pressure (p < .01). Maternal age, parity, and frequency of bed-sharing were not associated with feeling pressure (p > .05). Conclusion The majority of mothers (72.3%) in our sample reported feeling pressure about their sleep-related parenting practices at least sometimes, suggesting that this experience is quite common. Lower maternal education, breastfeeding, and picking up the infant to comfort him/her during the night were associated with higher perceived pressure. Future studies should examine feelings of pressure about sleep-related parenting practices in larger samples of mothers and investigate whether fathers share similar concerns. Moreover, identifying the potential sources of these feelings would represent an interesting clinical avenue. Support (if any) SSHRC, FRQS


PEDIATRICS ◽  
1992 ◽  
Vol 90 (2) ◽  
pp. 224-227
Author(s):  
Gary L. Freed ◽  
J. Kennard Fraley ◽  
Richard J. Schanler

Fathers participate in choosing the feeding method for their newborns. However they traditionally have not been included in most breast-feeding education programs. To examine expectant fathers' attitudes and knowledge regarding breast-feeding, we surveyed 268 men during the first session of their Childbirth education classes at five private hospitals in Houston, Texas. The study population was 81% white, 8% black, and 6% hispanic. Ninety-seven percent (n = 259) of the total were married. Fifty-eight percent (n = 156) reported that their spouses planned to breast-feed exclusively; several signficant differences existed between these men and those who reported plans for exclusive formula feeding. The breast-feeding group was more likely to believe breast-feeding is better for the baby (96% vs 62%; P < .0001), helps with infant bonding (92% vs 53%; P < .0001), and protects the infant from disease (79% vs 47% P < .001). The breast-feeding group was also more likely to want their partner to breast-feed (90% vs 13%; P < .0001) and to have respect for breast-feeding women (57% vs 16%; P < .0001). Conversely, those in the formula feeding group were more likely to think breast-feeding is bad for breasts (52% vs 22%; P < .01), makes breasts ugly (44% vs 23%; P < .05), and interferes with sex (72% vs 24%; P < .0001). The majority of both groups indicated breast-feeding was not acceptable in public (breast-feeding = 71%, formula feeding = 78%, P < .05). These data demonstrate misperceptions and a lack of education regarding breast-feeding in the formula feeding group and a lack of public acceptance in both groups. We conclude that fathers must be included in breast-feeding education programs. Confrontation of myths and misperceptions prenatally may help to overcome obstacles to the initiation of breast-feeding and to provide greater familial support for nursing mothers.


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