Metabolic utilization of energy and maintenance requirements in pregnant sows |
| |
| Affiliation: | 1. Orthodontic Research Center, Department of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran;2. Dental Material Department and Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran;3. Department of Orthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran;4. Department of orthodontics, University of Washington, Seattle, WA, USA;1. Natural Products Laboratory, School of Pharmacy, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea;2. Gachon Institute of Pharmaceutical Science, Gachon University, 191 Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea;3. College of Pharmacy, Gachon University, 191 Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea;4. Department of Biochemistry, College of Medicine, Gachon University, 191 Hambakmoero, Yeonsu-gu, Incheon 51936, Republic of Korea;5. Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea;1. Nofima, Norwegian Institute of Food, Fisheries and Aquaculture, Osloveien 1, 1430 Ås, Norway;2. Department of Animal and Aquacultural Sciences, Norwegian University of Life Science, Ås, Norway;3. Department of Plant and Environmental Sciences, Norwegian University of Life Science, Ås, Norway;4. Bioforsk Øst, Apelsvoll, Norwegian Institute for Agricultural and Environmental Research, Arable Crops Division, Kapp, Norway;1. Dept. of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden;2. Dept. of Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden |
| |
| Abstract: | Energy and nitrogen balances were measured in two experiments involving 32 Large-White gilts kept in respiration chambers and given a constant diet providing 27.6 MJ metabolizable energy (ME) per day (Experiment 1) or 32.7 MJ ME per day (Experiment 2). Measurements were made on the same animals at mid (Day 50–80) and late (Day 95 to farrowing) pregnancy in both experiments and also during early pregnancy (Days 30–50) in experiment 2. A total of 90 balances were performed.Advancement of pregnancy was associated with an increase in protein deposition and in heat production (67 kJ day−1 for a constant metabolizable energy (ME) intake) which resulted in reduced energy and fat deposition. Maintenance requirements (420–430 kJ ME kg−1 WC.75) were constant over pregnancy. Efficiencies of ME utilization for uterine (ku) and maternal (kr) deposition were 40–50% and about 80%, respectively. Efficiencies for protein (kp) and fat (kf) deposition were 58–67% and 80–90%, respectively. Additional heat loss with advancement of pregnancy (0.53 kJ kg−1 W0.75 day −1 of pregnancy) is related to the changes in the composition (protein vs. fat) and localization (uterine vs. maternal tissues) of the energy gain and not due to extra heat production arising from the pregnancy itself. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
