INFLUENCE OF EARLY WEANING ON THE PRODUCTION AND REPRODUCTION PERFORMANCE AND BEHAVIOR OF LARGE WHITE YORKSHIRE SWINE
| dc.contributor.advisor | SURESH BABU, D(MAJOR) | |
| dc.contributor.advisor | ANITHA, A | |
| dc.contributor.advisor | ESWARA RAO, B | |
| dc.contributor.author | SRAVANTHI, VADTHE | |
| dc.date.accessioned | 2017-05-20T06:21:06Z | |
| dc.date.available | 2017-05-20T06:21:06Z | |
| dc.date.issued | 2014-10 | |
| dc.description | THESES | en_US |
| dc.description.abstract | ABSTRACT: An experiment was conducted in the dept. of LPM at the NTR College of Veterinary Science, Gannavaram under RKVY (Rashtriya Krishi Vikas Yojana) project to find out the influence of early weaning on the productive performance and behaviour of piglets, post weaning maternal behaviour, reproductive performance and oestrus behaviour and carcass characters in Large White Yorkshire pigs. Fifty four piglets were divided into three groups of early weaning at 25 days (group 1) and 40days (group 2) and another group of conventional 56days(group 3) weaning in such a way that each group contains 18 piglets from three litters based on uniform birth weight. Similarly 18 sows were divided at the rate of six sows in each group to study the post-weaning maternal behaviour, reproductive performance and oestrus behaviour. The experiment was carried out for a period of 8 months from December 2013 to July 2014. The experimental animals were maintained under standard managemental, feeding and health care practices under intensive rearing system. The various piglet behavioural patterns studied were playing, fighting, huddling, lying, standing, locomotion and tail biting behavior for a period of one month. The amount of time spent for each behavioural pattern was recorded four times in a day at an interval of three hours during day time. The piglets from group 1 showed maximum playing behaviour at 2:00-3:00 PM in the afternoon whereas the group 2 and group 3 had spent more time at 10:00-11:00 AM in the morning. A significant variation (P<0.01) was observed among the three weaning age groups with respect to playing behaviour. The fighting behavior was more pronounced in group 1and group 2 at 10:00-11:00 AM whereas in group3 at 2:00- 3:00PM. Piglets in group1 and group 3 differ significantly (P < 0.01) with that in group 2 piglets, with regard to fighting behaviour. Maximum huddling time was spent by piglets in group1followed by group 3 and least by group 2 piglets. There was a significant (P<0.01) difference among the three weaning age groups for huddling behaviour. The time spent for lying behaviour was more in group 3 followed by group 2 and least by group 1. There was a significant difference (P < 0.01) among the three groups with each other for mean lying behaviour. The time spent for standing behaviour was more for group 2 followed by group 3 and least for group 1. There was a significant difference (P < 0.01) among the three groups with each other. The locomotion behaviour exhibited by piglets in group 2 was more followed by group 3 and least by group 1. The piglets in group 2 differ significantly (P < 0.01) with those in group 1 and 3. The time spent for tail biting behavior exhibited by piglets was more in group 2 followed by group 1 and least for group 3. The tail biting behavior was mostly observed at 10:00 AM and 2:00 PM for all the three groups. There exists a significant (P <0.01) difference among the three weaning age groups of piglets. The growth performance of the piglets was studied in the form of post weaning body weight gain and Average Daily Gain. The post weaning weight (kg) gains reached 56.63 ± 0.41, 65.03 ± 0.36 and 63.09 ± 0.38 Kg for group 1, group 2 and group 3 respectively, at the end of study period. Among the three groups the group 2 piglets showed higher body weight at the end of study period than group 1 and 3. A significant difference (P < 0.01) was observed among the groups for all the fortnightly interval body weights. The mean ADG (Kg) for group 1, 2 and 3 was 0.33, 0.38 and 0.36 respectively and showed significant difference between the groups (P < 0.01) for average daily gain. The post weaning maternal behaviour was studied taking into account aggressive behaviour, resting, locomotion, grunting and standing behaviour. The sows in group 3 had spent more time for aggressive behaviour than group 2 and group 1. The aggressive behavior was decreased from day 1 to day 4 in all the groups. The time spent in aggressiveness was significant (P < 0.01) by the group 2 and 3 with group 1. The resting period for group 1 sows was higher than that of the group 2 and group 3. The time spent for resting had increased from 1st to 4th day by the sows in group 2 and 3. The difference in time spent for resting by the sows of group 2 and 3 were significant (P < 0.01) with the group 1 sows The locomotion behaviour for sows in group 3 was more than that of group 1 and 2.The time spent for locomotion was reduced from 1st to 4th day for sows in group 2 and 3 whereas increased for sows in group 1. This behaviour for sows in the group 2 and 3 were significant (P < 0.01) over the group 1 sows. The grunting period was more for group 3 followed by group 2 and least for group 1. The time spent for grunting had reduced from 1st to 4th day in all groups. The group 2 and 3 sows had shown significant (P < 0.01) difference over group 1 for grunting behaviour. The time spent for standing was more for group 1 sows than that of group 2 and group 3.The sows in group 1 differ significantly (P < 0.01) with those in group 2 and 3. The reproductive performance was studied in the form of onset of oestrous after weaning and after farrowing and conception rate. The onset of oestrous in group 1,2 and 3 were within 39.75 ± 0.34 days, 47.83 ± 0.28 days and 61.67 ± 0.19 days respectively in the increasing order after farrowing. The data showed that there was a significant (P<0.01) difference observed on the days of onset of oestrus after farrowing between different groups. The conception rate in group 1 sows was 66.6% when compared to group 2 and group 3 in which it was 100% .The oestrous behaviour was exhibited in the form of lordosis, mounting and and restlessness. 66% of sows in group 1 and 100% in group 2 and 3 sows exhibited this behaviour. The carcass characters were studied with the following parameters. The Preslaughter weight of pigs was higher in group 2, followed by group 3 and lower by group 1. The Carcass length of pigs in group 2 was more than for group 1, and group 3. The Average Back fat Thickness of pigs in group 2 was more than in 3 and group 1.The hot carcass weight was observed to be higher in group 2 when compared to group 1 and group 3 pigs. The dressing percent of pigs from group 2 was higher and for group 1 and 3 it was lower. The meat bone ratio was more for group 2 followed by group 3 and least for group 1. The pigs in the three groups were significantly different (P < 0.01 ) with each other with respect to pre slaughter body weight and hot carcass weight. The carcass length was more for group 2 and it significantly(P < 0.01) differed with group 1. The group 3 piglets was not significantly differ with group 1 and group 2 for carcass length. It was noticed that the Average Back Fat thickness and Meat Bone ratio in group 2 & 3 were significant with group 1 (P < 0.01).Whereas the group 2 pigs showed higher dressing percentage and was significant (P < 0.01) compared with group 1 and group 3. As a part of the wholesale primal cuts the percentage of boston butt in group 3 was higher and lower in group1 and group 2. As regards picnic shoulder the group 1 showed higher percentage than group 2 and group 3.The percentage of loin was found to be more in group 3 and group 1.The percentage of belly was higher in group 2 then group 3 followed by group 1.The ham percentage was indicated to be more in group 2 followed by group 3 and group 1. The five wholesale primal cuts percentages in their hot carcass weight were significant (P<0.01) among three groups. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810011749 | |
| dc.keywords | EARLY WEANING; YORKSHIRE SWINE | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 143 | en_US |
| dc.publisher | SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI – 517 502. (A.P) INDIA | en_US |
| dc.sub | Livestock Production and Management | en_US |
| dc.subject | null | en_US |
| dc.theme | INFLUENCE OF EARLY WEANING ON THE PRODUCTION AND REPRODUCTION PERFORMANCE AND BEHAVIOR OF LARGE WHITE YORKSHIRE SWINE | en_US |
| dc.these.type | M.V.Sc. | en_US |
| dc.title | INFLUENCE OF EARLY WEANING ON THE PRODUCTION AND REPRODUCTION PERFORMANCE AND BEHAVIOR OF LARGE WHITE YORKSHIRE SWINE | en_US |
| dc.type | Thesis | en_US |