Effect of feeding level on progesterone concentration in early pregnant multiparous sows

2005 ◽  
Vol 90 (1-2) ◽  
pp. 117-126 ◽  
Author(s):  
J.V. Virolainen ◽  
O.A.T. Peltoniemi ◽  
C. Munsterhjelm ◽  
A. Tast ◽  
S. Einarsson
Keyword(s):  
Progesterone Concentration ◽  
Feeding Level ◽  
Effect Of Feeding

Effect of feeding level on luteal function and progesterone concentration in the vena cava during early pregnancy in gilts

2013 ◽  
Vol 25 (3) ◽  
pp. 531 ◽  
Author(s):  
R. Z. Athorn ◽  
P. Stott ◽  
E. G. Bouwman ◽  
T. Y. Chen ◽  
D. J. Kennaway ◽  
...  
Keyword(s):  
Early Pregnancy ◽  
Vena Cava ◽  
Progesterone Concentration ◽  
Embryo Survival ◽  
Luteal Function ◽  
Feeding Level ◽  
Survival And Development ◽  
Luteal Tissue ◽  
Effect Of Feeding

This study assessed the effect of feeding level on progesterone concentration in the caudal vena cava during early pregnancy in gilts. Twenty-four Landrace gilts were allocated to either a high (2.8±0.02) or a low (1.5±0.01kg day–1) feeding level at Day 0 of pregnancy. Serial blood samples were collected every 15min for 3h before and 3h after feeding on Days 6 and 9 of pregnancy. Embryo survival and development as well as in vitro luteal progesterone production were assessed at Day 10 of pregnancy. Progesterone concentration in the vena cava was pulsatile with gilts on the high feeding level having more pulses compared with Low gilts on Day 9 of pregnancy (P<0.05). On Day 6 the number of pulses did not differ significantly between treatments; however, the average progesterone concentration in the vena cava tended to be higher in the gilts on the high feeding level (P<0.10). Embryo survival at Day 10 was 92±3% for High gilts compared with 77±3% for Low gilts (P<0.05). No difference in embryo development between the treatments was seen. There was no difference between treatments in in vitro secretion of progesterone by luteal tissue. In conclusion, a high plane of nutrition positively affects progesterone secretion by the ovaries in early pregnancy.

Effect of feeding level during rearing and mating strategy on performance of Swedish Yorkshire sows. 1. Growth, puberty and conception rate

1999 ◽  
Vol 68 (3) ◽  
pp. 355-363 ◽  
Author(s):  
Y. Le Cozier ◽  
E. Ringmar-Cederberg ◽  
S. Johansen ◽  
J. Y. Dourmad ◽  
M. Neil ◽  
...  
Keyword(s):  
Live Weight ◽  
The Body ◽  
Conception Rate ◽  
Backfat Thickness ◽  
Body Fatness ◽  
Feeding Level ◽  
The Third ◽  
Complete Diet ◽  
Ad Libitum ◽  
Effect Of Feeding

AbstractFrom 74 to 180 days of age, a complete diet was offered either ad libitum (AL) or at proportionately 0·8 of the observed consumption (R) to two groups of purebred Yorkshire gilts, comprising 128 and 127 animals, respectively. Half of the animals in each group was served at the first detected oestrus, and the other half at the third detected oestrus, according to a plan defined at the start of the experiment. Animals which failed to show oestrus before 240 days of age were culled.At 100 kg live weight (LW), AL gilts were younger (-20 days) and had thicker backfat (+2.3 mm) than R gilts. At the first detected oestrus, AL females were also younger (198 v. 203 days), heavier (127 v. 117 kg LW) and fatter (17·8 v. 14·7 mm backfat thickness) than R gilts. No difference between feeding treatments during rearing was observed in the percentage of females detected on heat before day 240. Seventy-three animals were culled from the start of the experiment until service, half of them (54%) failing to show oestrus. At service, LW and backfat thickness in the four treatments ranged from 117 to 148 kg LW and 14·9 to 19·7 mm, respectively. The body fatness, estimated from the ratio of backfat to LW, was higher in AL than in R gilts (0·14 and 0·12 , respectively), whereas no difference was observed between E1 and E3 gilts (0·13 on average). After the first service 15% of the gilts came back into heat but the conception rate was not affected by feeding treatment during rearing.

scholarly journals Plasma proteins of young African catfish (Clarias gariepinus, Burchell 1822).

1987 ◽  
Vol 35 (4) ◽  
pp. 521-524
Author(s):  
J.H. Boon ◽  
J.M. Smits ◽  
T. Wensing ◽  
E. Lo
Keyword(s):  
Health Status ◽  
Water Supply ◽  
Plasma Protein ◽  
Negative Correlation ◽  
Plasma Proteins ◽  
Clarias Gariepinus ◽  
Total Content ◽  
African Catfish ◽  
Feeding Level ◽  
Effect Of Feeding

The effect of feeding level and water supply on the total content of plasma protein (TPP) and fractions of these proteins (PPF) of young African catfish was studied. It was found that TPP can be divided into 4 fractions (PPF I-IV), of which PPF I is predominant. Analysis of the results showed a strong effect of feeding level on TPP and PPF I-IV. There was a positive correlation between TPP and the weights of PPF I-IV, and a negative correlation between PPF I and PPF II. The PPF I fraction might be usable as an indicator for the health status of young catfishes. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Effect of feeding level on the composition of the intestinal microbiota in weaned piglets1

2012 ◽  
Vol 90 (suppl_4) ◽  
pp. 19-21 ◽  
Author(s):  
V. T. S. Rist ◽  
M. Eklund ◽  
E. Bauer ◽  
N. Sauer ◽  
R. Mosenthin
Keyword(s):  
Intestinal Microbiota ◽  
Feeding Level ◽  
Effect Of Feeding

Effect of Feeding Level after Weaning on Reproduction in Sows

1982 ◽  
Vol 55 (3) ◽  
pp. 608-612 ◽  
Author(s):  
L. F. Tribble ◽  
D. E. Orr
Keyword(s):  
Feeding Level ◽  
Effect Of Feeding

The effect of winter feeding level on subsequent grazing behaviour and herbage intake of Charolais heifers

1995 ◽  
Vol 61 (2) ◽  
pp. 211-217 ◽  
Author(s):  
R. Ferrer Cazcarra ◽  
M. Petit
Keyword(s):  
Organic Matter ◽  
Live Weight ◽  
Mean Difference ◽  
Feeding Level ◽  
Sward Height ◽  
Herbage Intake ◽  
Compensatory Gain ◽  
Winter Diets ◽  
Effect Of Feeding ◽  
Grazing Behaviour

AbstractTwo groups of eight Charolais heifers were used to examine the effect of feeding level during the post-weaning winter on the grazing behaviour and herbage intake over three periods during the first 2 months of grazing. The winter diets (L and H) were given to achieve a mean difference of 50 kg between groups at turn-out. The heifers were set-stocked together on a hill pasture where sward height was maintained at 12 cm.The winter live-weight gains were 0·31 and 0·70 (s.e. 0·032) kg/day for L and H heifers respectively, and spring gains 1·94 and 1·66 (s.e. 0·082) kg/day respectively. Intakes increased throughout the spring grazing for both groups. Absolute intakes were lower for L than for H heifers only during the first period (P < 0·05). Intake per kg live weight was higher in L than in H heifers (23·0 v. 21·1 (s.e. 0·54) g organic matter (OM) per kg live weight). Bite weights of H heifers were constant throughout (434, (s.e. 12·9) mg OM), while bite weights ofL heifers only reached those of H heifers in the last period. Bite weight was linearly related to live weight. Bite rates were not different between groups, but L heifers compensated for lower bite weight by grazing longer and they increased their grazing time after turn-out faster than H heifers. Grazing time was mainly responsible for higher relative intakes in L heifers, and thus, partly, for compensatory gain observed.

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