Hessel, Engel F.

[["dc.bibliographiccitation.firstpage","2847"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Journal of Animal Science"],["dc.bibliographiccitation.lastpage","2855"],["dc.bibliographiccitation.volume","84"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","Reiners, Kerstin"],["dc.contributor.author","van den Weghe, H. F. A."],["dc.date.accessioned","2018-11-07T09:11:02Z"],["dc.date.available","2018-11-07T09:11:02Z"],["dc.date.issued","2006"],["dc.description.abstract","This study evaluated how socializing piglets before weaning affects behavior of lactating sows and the pre- and postweaning behavior and performance of piglets. Two farrowing rooms, each with 6 pens, and I nursery with 4 pens were used. In total, data were obtained from 24 sows and their litters. In each farrowing room, the solid barriers between 3 farrowing pens were removed on d 12 after farrowing, and the sows remained confined in their crates (experimental group). In the other 3 farrowing pens of each farrowing room, sows and their litters were kept under conventional conditions until weaning (control group). All piglets were weaned 28 d after birth. After weaning, piglets from each group remained together in 1 pen of the nursery. The behavior of sows (lying, standing, sitting, nursing) and piglets (lying, active, suckling) in the farrowing rooms was observed for 24 h before and for 48 h after removal of the barriers between the pens. In addition, behavior (active, lying, feeding, agonistic behavior) of piglets was observed in the nursery during the initial 48-h period after weaning. Each piglet was weighed on d 5, 12, and 28 after birth and thereafter weekly until the fifth week of rearing. In the farrowing room, mixing of litters did not influence behavior of piglets and sows. Preweaning weight gain of the piglets did not differ (P = 0.60) between the treatments. In the initial 48 h after weaning, less agonistic behavior (P < 0.001) was observed in piglets belonging to the experimental group. During 5 wk of rearing, piglets in the experimental group gained more weight compared with the control group (P = 0.05). The advantage shown by the experimental group became especially conspicuous in the first week after weaning (P = 0.05). By socializing unfamiliar piglets before weaning, stress due to mixing could at least be distanced in time from the other burdens of weaning, thereby improving performance."],["dc.identifier.doi","10.2527/jas.2005-606"],["dc.identifier.isi","000240671100030"],["dc.identifier.pmid","16971588"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26635"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Soc Animal Science"],["dc.relation.issn","0021-8812"],["dc.title","Socializing piglets before weaning: Effects on behavior of lactating sows, pre- and postweaning behavior, and performance of piglets"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3600"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Journal of Animal Science"],["dc.bibliographiccitation.lastpage","3607"],["dc.bibliographiccitation.volume","86"],["dc.contributor.author","Reiners, Kerstin"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","van den Weghe, H. F. A."],["dc.date.accessioned","2018-11-07T11:08:35Z"],["dc.date.available","2018-11-07T11:08:35Z"],["dc.date.issued","2008"],["dc.description.abstract","The influence of heated mash on growth and feeding behavior of newly weaned piglets was investigated. An automatically ventilated nursery with 4 identical pens was used. Twenty piglets weaned at 21 d were housed in each pen. The experiment was repeated 3 times. In total, data were obtained from 240 piglets of 12 pens. The pens were provided with a sensor-controlled, automatic feeding device, which dosed a ready-mixed mash in a trough. In each of 2 of the pens, the feed was mixed with warm water at 36 C, during the first week of weaning. This heated mash had a temperature of 34 C at the outlet of the automatic feeding device (experimental group). In the 2 control groups, the water was not heated and the temperature of the mash was 14 C at the outlet of the automatic feeding device. From the second week of weaning, the mash had a temperature of 14 C at the outlet of the automatic feeding device in all 4 pens. Piglets were weighed at weaning, at weekly intervals through 49 d after weaning, and on d 139 after weaning. Behavior of the whole group, as well as behavior of selected focal animals, was evaluated for the first 48 h after weaning. In addition, skin condition of piglets was assessed on day of weaning and on d 7, 14, and 21 after weaning. The amount of feed consumed by the piglets was recorded on a daily basis throughout the whole period of nursery. Over the total period of the study, piglets in the experimental group gained 3.98 +/- 1.66 kg (P = 0.047) more than the control group. The difference was particularly clear during the nursery period ( 49 d) when the experimental group gained 0.89 +/- 0.23 kg more than the control group (P = 0.03). Although piglets in the control group consumed 37.15 +/- 0.15 kg of feed over the complete nursery period, the experimental group consumed 42.56 +/- 0.15 kg per piglet (P = 0.023). By heating the mash feed in the first week after weaning, both growth performance as well as feed consumption of piglets could be increased. No difference in feed conversion and feeding behavior was found between groups."],["dc.description.sponsorship","H. Wilhelm Schaumann Foundation (Hamburg, Germany)"],["dc.identifier.doi","10.2527/jas.2008-0909"],["dc.identifier.isi","000261208900037"],["dc.identifier.pmid","18641176"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52818"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Soc Animal Science"],["dc.relation.issn","0021-8812"],["dc.title","The effect of heated mash on performance and feeding behavior of newly weaned piglets"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","178"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Computers and Electronics in Agriculture"],["dc.bibliographiccitation.lastpage","184"],["dc.bibliographiccitation.volume","68"],["dc.contributor.author","Reiners, Kerstin"],["dc.contributor.author","Hegger, Alexander"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","Boeck, Stephan"],["dc.contributor.author","Wendl, Georg"],["dc.contributor.author","van den Weghe, Herman F. A."],["dc.date.accessioned","2018-11-07T11:23:26Z"],["dc.date.available","2018-11-07T11:23:26Z"],["dc.date.issued","2009"],["dc.description.abstract","The study examined simultaneous individual animal identification of newly weaned piglets based on radio frequency identification (RFID) using passive high frequency (HF) transponders focusing on identification rate and identification accuracy. The antenna for simultaneous individual animal identification was integrated into the round trough of the feeder and connected to a conventional high frequency long range reader. HF transponders were attached to the eartags of the piglets. An anti-collision system was used in order to facilitate simultaneous registration of animals which were within reading range of the antenna at the same time. Anti-collision systems allow multiple access handling and prevent the collision of transponder data within the reading range of a RFID reader, which would render data unreadable. In order to determine the identification rate of this innovative system, trough visits of selected focal animals registered by the simultaneous individual animal identification were verified using video observation. The anti-collision system of simultaneous individual animal identification was validated through group observations. The identification rate of 97.3% in simultaneous individual animal identification was very high. 33.3% of the trough visits were thereby registered simultaneously. 64% of the trough visits were registered with a short time delay. Average time delay of simultaneous individual animal identification did not exceed 3.00s. The simultaneous individual animal identification sensed the beginning of a trough visit 0.28 +/- 6.08s earlier than the observer. The simultaneous individual animal identification registered piglets leaving the trough on average 2.77 +/- 7.11 s earlier than the observer. Frequenting the trough had a significant influence on the functionality of the simultaneous individual animal identification. The number of animals registered by the simultaneous individual animal identification differed on average by 0.19 +/- 0.04 piglets from the result of the observer if one single piglet was within the range of the antenna. If more than five animals were within the range of the antenna, a deviation of 1.04 +/- 0.19 animals was observed (P < 0.0001). The demonstrated system in principle represents a good possibility to simultaneously identify piglets online at the round trough of a feeder. (C) 2009 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","H. Wilhelm Schaumann Stiftung"],["dc.identifier.doi","10.1016/j.compag.2009.05.010"],["dc.identifier.isi","000269025400006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56194"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","0168-1699"],["dc.title","Application of RFID technology using passive HF transponders for the individual identification of weaned piglets at the feed trough"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","230"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","JOURNAL OF SWINE HEALTH AND PRODUCTION"],["dc.bibliographiccitation.lastpage","238"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Reiners, Kerstin"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","Sieling, S."],["dc.contributor.author","van den Weghe, Herman F. A."],["dc.date.accessioned","2018-11-07T08:39:54Z"],["dc.date.available","2018-11-07T08:39:54Z"],["dc.date.issued","2010"],["dc.description.abstract","Objective: To evaluate whether a prolonged photoperiod days 1 to 4 after weaning influences behavior and performance. Materials and methods: Weaned pigs were allotted to daily photoperiods of 20 hours and 8 hours of light, respectively, for days 1 to 4 after weaning. Data were obtained from 234 pigs from 12 pens, resulting in n = 6 replicates per treatment. Behavior was observed during the initial 48 hours after weaning and on day 5 (when photoperiod was changed from 20 hours to 8 hours) in the prolonged light exposure group. Feed disappearance was recorded throughout the whole nursery period. Pigs were individually weighed on the day of weaning and at weekly intervals during the 7-week nursery period. Results: Feed disappearance tended to be higher (P = .09) in the prolonged light exposure group in the initial 24 hours after weaning. Considering the whole nursery period, feed disappearance did not differ between the treatment groups (P = .73). Pigs in the prolonged light exposure group did not gain more weight in the first week after weaning (P = .34). Also considering the entire 7-week nursery period, body weight gain did not differ between the groups (P = .84). Implications: Feed disappearance on the day after weaning tends to be greater in pigs housed in a prolonged photoperiod. Nevertheless, prolonging the photoperiod during the first 4 days after weaning does not influence feed disappearance or body weight gain over the entire nursery phase."],["dc.description.sponsorship","H. Wilhelm Schaumann Foundation (Hamburg, Germany)"],["dc.identifier.isi","000281536900004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19112"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Assoc Swine Veterinarians"],["dc.relation.issn","1537-209X"],["dc.title","Influence of photoperiod on the behavior and performance of newly weaned pigs with a focus on time spent at the feeder, feed disappearance, and growth"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","110"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","AGRARTECHNISCHE FORSCHUNG-AGRICULTURAL ENGINEERING RESEARCH"],["dc.bibliographiccitation.lastpage","118"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Hessel, Engel F."],["dc.contributor.author","Reiners, Kerstin"],["dc.contributor.author","van den Weghe, Herman F. A."],["dc.date.accessioned","2018-11-07T11:05:50Z"],["dc.date.available","2018-11-07T11:05:50Z"],["dc.date.issued","2007"],["dc.description.abstract","Group housing systems for lactating sows where piglets are socialized with non-littermates in order to establish a new dominance hierarchy already before weaning have generally not been accepted in practice so far. The main reasons are increased numbers of crushed piglets, decreased piglet performance caused by the appearance of cross-suckling, as well as the larger workload involved by such systems. On the Relliehausen experimental farm the solid partitions between the farrowing pens were removed, while the sows remained confined in their crates. The influence of grouping on the performance and the behaviour of the piglets before and after weaning was examined. The aim of the study was to reduce the stressors which attend weaning and to realize higher weight gains after weaning."],["dc.identifier.isi","000254705100002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52156"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Leibniz Inst Agricultural Eng Potsdam-bornim E V"],["dc.relation.issn","0948-7298"],["dc.title","Improving piglet raising performance by modif, ying the housing system during the nursing period"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]