THE INFLUENCE OF DIETARY ENERGY INTAKE DURING SUCCESSIVE LACTATIONS ON SOW PROLIFICACY

1988 ◽  
Vol 68 (1) ◽  
pp. 283-290 ◽  
Author(s):  
R. N. KIRKWOOD ◽  
B. N. MITARU ◽  
A. D. GOONERATNE ◽  
R. BLAIR ◽  
P. A. THACKER
Keyword(s):  
Energy Intake ◽  
Litter Size ◽  
High Energy ◽  
Dietary Energy ◽  
Maternal Weight ◽  
Digestible Energy ◽  
Dietary Energy Intake ◽  
Effect Of Treatment ◽  
Sow Lactation ◽  
Farrowing Rate

From selection prior to the production of their first litters, 101 Yorkshire × Landrace sows were allocated to be ad libitum fed either a control (CE) or high energy diet (HE) during each of four successive lactations. Diets CE and HE supplied 13.7 and 15.6 MJ. DE kg−1, respectively. Sows were treated similarly during each gestation. Although HE sows tended to have a greater digestible energy intake, they lost more weight during each lactation (P < 0.05). Maternal weight gains between each farrowing decreased with successive parities (P < 0.05). Litter size at the second and subsequent farrowings was greater (P < 0.05) for the HE than CE sows. The overall mean litter size for the HE and CE sows was 10.1 and 9.3 piglets, respectively. A similar trend was noted for live births (9.7 vs. 8.9) and numbers weaned (8.3 vs. 7.9). There was no consistent effect of treatment on pig weights at birth or 21 d of lactation. No treatment or parity effects were evident for preweaning pig mortality. The weaning to conception interval was longer for HE sows in the first parity (14.9 vs. 11.1 d), but more CE sows were culled for reproductive problems. No treatment effects were noted for mean interval to conception, proportion mated within 8 d or subsequent farrowing rate in parities 2, 3 or 4. There was no effect of initial gilt breeding weight on the ability to produce up to four litters. It is concluded that low lactation digestible energy intake may limit subsequent litter size. Key words: Sow, lactation, nutrition, reproductive performance

Effect of energy intake during lactation on nitrogen retention by the sow for 35 days post-weaning

1988 ◽  
Vol 1988 ◽  
pp. 121-121
Author(s):  
M. A. Roos ◽  
Peter J. Bechtel ◽  
Robert A. Easter
Keyword(s):  
Energy Intake ◽  
Nutrient Intake ◽  
Nitrogen Retention ◽  
High Energy ◽  
Dietary Energy ◽  
Maternal Weight ◽  
Dietary Energy Intake ◽  
Soyabean Meal ◽  
Daily Milk Yield ◽  
Daily Milk

To establish the effect of an Inadequate dietary energy intake during lactation on the repletion of maternal energy and protein stores post-weaning.Forty-two crossbred, multi-parous (parity 2 to 5) sows were randomly assigned to diet on day-1 of lactation based upon ancestry and parity, Diets were (1) high-energy (66.9 MJ/day) and (2) low-energy (33 MJ/day). Lactation diets were prepared with maizestarch and soyabean meal and formulated to provide equal intake of all nutrients except energy during the 28-day lactation. Total daily nutrient intake was achieved in four proportional meals All litters were standardized to nine pigs/litter on day-1 of lactation. On day-14 of lactation, daily milk yield was estimated by the Weight-suckle-welgh method. Sows were weighed on day-1, day-21 and day-28 of 1actation. Maternal weight change was calculated using maternal weight postpartum and at weaning. On day-28 of lactation, ten sows (weight 182 to 258 kg) from each treatment were selected at random and assigned to metaboilsm crates for a 35-day post-weaning nitrogen and energy balance experiment.

The influence of dietary energy intake on growth performance and tissue deposition in pigs between 80 and 120 kg liveweight

2004 ◽  
Vol 55 (12) ◽  
pp. 1271 ◽  
Author(s):  
R. H. King ◽  
R. G. Campbell ◽  
R. J. Smits ◽  
W. C. Morley ◽  
K. Ronnfeldt ◽  
...  
Keyword(s):  
Energy Intake ◽  
High Capacity ◽  
High Energy ◽  
Continuous Variable ◽  
Dietary Energy ◽  
Adequate Diet ◽  
Protein Deposition ◽  
Dietary Energy Intake ◽  
Ad Libitum ◽  
Ad Libitum Intake

Eighty crossbred pigs of a composite genotype were allocated at 80 kg liveweight to a 2 × 5 factorial experiment involving 2 sexes (boars and gilts) and 5 levels of dietary energy intake ranging from about 55% estimated ad libitum up to 100% ad libitum intake. The diet was formulated to be protein-adequate and contained 14.4 MJ DE/kg and 0.55 g available lysine/MJ DE and the pigs were slaughtered at approximately 120 kg liveweight. Growth rate and food conversion efficiency increased linearly, in response to increasing digestible energy (DE) intake, with boars consistently out-performing gilts at each level of DE intake. Protein deposition rate in the whole empty body of pigs was consistently higher in boars than in gilts and linearly related to DE intake in both sexes, with no evidence of a plateau at high energy intakes, suggesting no intrinsic limit to protein deposition in these pigs up to 120 kg liveweight. When pigs were offered the protein-adequate diet ad libitum between 80 and 120 kg liveweight, boars and gilts consumed 47.7 and 40.9 MJ DE/day, respectively, and protein deposition rates in the whole empty body of pigs reached 247 and 182 g/day, respectively. Maintenance energy requirements were estimated to be 351 kJ DE/kg0.75.day for both boars and gilts [maximal model; including nominal DE level (treated as a 5-level factor), actual DE intake (treated as a continuous variable), and sex (treated as a 2-level factor)] or 506 and 566 kJ DE/kg0.75.day for boars and gilts, respectively [reduced model; including actual DE intake (treated as a continuous variable) and sex (treated as a 2-level factor)]. Statistical analyses show that the maximal model reflects the data more closely than the minimal model, suggesting that the lower maintenance estimate of 351 kJ DE/kg0.75.day could reflect reality better. In conclusion, genetically improved boars, and to a lesser extent gilts, have a high capacity for lean growth, and their upper limit to protein retention might not be reached below about 120 kg liveweight.

Misreporting of dietary energy intake in adolescents

2010 ◽  
Vol 0 (0) ◽  
Author(s):  
Luana C. dos Santos ◽  
Mariana N. Pascoal ◽  
Mauro Fisberg ◽  
Isa de P. Cintra ◽  
Lígia A. Martini
Keyword(s):  
Energy Intake ◽  
Dietary Energy ◽  
Dietary Energy Intake

scholarly journals Estimating my equilibrium energy intake during lockdown: very introspective study

BMJ ◽  
2020 ◽  
pp. m4561
Author(s):  
R A Lewis
Keyword(s):  
Body Weight ◽  
Energy Intake ◽  
Outcome Measures ◽  
Dietary Energy ◽  
Saturday Morning ◽  
Dietary Energy Intake ◽  
Body Weight Data ◽  
Tuesday Afternoon ◽  
Weight Data ◽  
At Home

AbstractObjectiveTo estimate the daily dietary energy intake for me to maintain a constant body weight. How hard can it be?DesignVery introspective study.SettingAt home. In lockdown. (Except every Tuesday afternoon and Saturday morning, when I went for a run.)ParticipantsMe. n=1.Main outcome measuresMy weight, measured each day.ResultsSleeping, I shed about a kilogram each night (1.07 (SD 0.25) kg). Running 5 km, I shed about half a kilogram (0.57 (SD 0.15) kg). My daily equilibrium energy intake is about 10 000 kJ (10 286 (SD 201) kJ). Every kJ above (or below) 10 000 kJ adds (or subtracts) about 40 mg (35.4 (SD 3.2) mg).ConclusionsBody weight data show persistent variability, even when the screws of control are tightened and tightened.

scholarly journals Unique associations of the Job Demand-Control-Support model subscales with leisure-time physical activity and dietary energy intake

2019 ◽  
Vol 57 (1) ◽  
pp. 99-117
Author(s):  
Christopher G. BEAN ◽  
Helen R. WINEFIELD ◽  
Amanda D. HUTCHINSON ◽  
Charli SARGENT ◽  
Zumin SHI
Keyword(s):  
Physical Activity ◽  
Energy Intake ◽  
Leisure Time ◽  
Leisure Time Physical Activity ◽  
Dietary Energy ◽  
Dietary Energy Intake ◽  
Job Demand ◽  
Demand Control ◽  
Support Model

Response of Swine Selected for High and Low Fatness to a Difference in Dietary Energy Intake

1969 ◽  
Vol 28 (2) ◽  
pp. 197-203 ◽  
Author(s):  
R. J. Davey ◽  
D. P. Morgan ◽  
C. M. Kincaid
Keyword(s):  
Energy Intake ◽  
Dietary Energy ◽  
Dietary Energy Intake

Effect of dietary energy intake during pregnancy on liveweight gain and backfat gain of primiparous sows kept in an outdoor system under tropical conditions

2000 ◽  
Vol 2000 ◽  
pp. 107-107
Author(s):  
R. H. Santos Ricalde ◽  
I. J. Lean
Keyword(s):  
Energy Level ◽  
Energy Intake ◽  
Energy Requirements ◽  
Dietary Energy ◽  
Feeding Management ◽  
Dietary Energy Intake ◽  
Tropical Environments ◽  
Tropical Conditions ◽  
Feeding Resources ◽  
The Tropics

Energy requirements for maintenance in pregnant sows increase when they are kept outdoors under temperate climates in comparison to indoors. However, there is little information on the energy requirements of breeding sows kept outdoors in tropical environments. Knowledge about the correct feeding management for pregnant sows kept outdoors will optimise the utilisation of feeding resources available in the tropics. The aim of this study was to evaluate the effect of energy level supply during pregnancy on backfat change and liveweight change of primiparous sows kept outdoors under tropical conditions.

scholarly journals Cumulative Dietary Energy Intake Determines the Onset of Puberty in Female Rats

2004 ◽  
Vol 112 (15) ◽  
pp. 1472-1480 ◽  
Author(s):  
Jenny Odum ◽  
Helen Tinwell ◽  
Graham Tobin ◽  
John Ashby
Keyword(s):  
Energy Intake ◽  
Female Rats ◽  
Dietary Energy ◽  
Dietary Energy Intake

scholarly journals Effect of Dietary Energy Intake during Lactation on Performance of Primiparous Sows and their Litters

1985 ◽  
Vol 61 (5) ◽  
pp. 1164-1171 ◽  
Author(s):  
J. L. Nelssen ◽  
A. J. Lewis ◽  
E. R. Peo ◽  
J. D. Crenshaw
Keyword(s):  
Energy Intake ◽  
Dietary Energy ◽  
Dietary Energy Intake
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