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제주도에서 돼지의 번식형질(산자수 및 이유율)에 대한 품종 다양성 분석

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Alternative Title
Analysis of breed diversity on reproductive trait(litter size at birth and weaning rate) in swine of Jeju
Abstract
For this study, 10 hog farms raising more than 200 pigs in Jeju were selected in order to look into several productivity factors, including their overall achievement on the management and breeding, as well as the number of weaning pigs. In addition, research on carcass traits and sensory tests involving LYL, YLY, and other crossbreeding techniques were conducted to find out how the cross combination can contribute to increase in productivity and enhancement of meat quality. The regulation that bans livestock from being imported from the mainland to Jeju and the low supplying capacity of the pig breeding studs, including those in the livestock development organization of Jeju, have become a stumbling block to stabilizing the supply network of the breeding pigs critical to produce high-quality meat. That's why the self-production has to be adopted to make up for the shortage. The following summarizes the results of the study to be used as rudimentary data on the ways in which the cross combination could help improve the productivity and quality traits.

1. The average rate of the weaning pigs among the entire pig population was 95.16%; 94.76% for LYL-applied hog farms and 95.75% for LYL-applied ones. The weaning rate per piglet was 9.31 on average; 9.90 for LYL, 8.23 for YLY (p<0.001). PSY (piglet per sow per year) of the entire farms marked 18.34 pig, with LYL staying at 18.34, and LYL at 16.21(p<0.001). MSY, or Marketed-pig per Sow per Year, was 16.93 pigs for the entire community, with 18.84 for YLY, and 14.23 for YLY (p<0.001). The appearance rate of A-rated pigs was 48.26%, with 50.45% for YLY, but 45.02% for LYL (p<0.01).

2. Class 1A showed the highest frequency rate of 49.88%, or 2,722 pigs, followed by Class 1B of 29.38%, or 1,600 pigs and Class 2C of 9.03%, or 492 pigs. However, the supreme Class 1+A hit the lowest frequency level of 1.54%, or 84 pigs. For YLY, Class 1A took up 50.52%, or 2,659 pigs, followed by Class 1B of 29.49%, or 1,552 pigs, and Class 2C of 9.25%, or 487 pigs.

3. For the meat quality, Class 1+ pigs accounted for 79.20%, or 4,220 pigs, followed by Class 2 of 14.98%, or 798 pigs, and Class 1 of 5.55%, or 296 pigs. For YLY, Class 1+ pigs took up 79.79%, or 4,197 pigs, followed by Class 2 of 14.58%, or 767 pigs. For LYL, Class 2 pigs were 45.59%, or 31pigs, with Class 1+ pigs representing 33.82%, or 23 pigs.

4. The average carcass weight was 79.64kg, with YLY of 89.60kg and LYL of 69.69kg. The dressed weight of Class 1+ pigs in YLY was 89.59kg, with Class 1 being 89.19kg, Class 2 89.68kg, and Class 3 96.63kg, which demonstrated the meaningful heavy weight for the lower quality of the carcass(p<0.01). On the contrary, Class 1+ of LYL was 88.23kg, Class 1 80.48kg, Class 2 60.20kg, and Class 3 49.85kg (p<0.01).

5. Juiciness, a key sensory factor, gained 4.64 out of 6 on average of the entire population, which was considered outstanding, with YLY of 4.79 and LYL of 4.50. Tenderness was 4.47 on average. The higher score means more tender meat. YLY showed a considerable tenderness of 4.80, but LYL proved to be tougher at 4.14(p<0.01). Meat flavor received a positive feedback of 4.62, with 4.60 for YLY, and 4.63 for LYL (p>0.05).
Author(s)
안철수
Issued Date
2015
Awarded Date
2015. 8
Type
Dissertation
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000007262
Alternative Author(s)
An, chul soo
Department
대학원 생명공학과
Table Of Contents
Ⅰ. 서 론 1

Ⅱ. 연구사 3

Ⅲ. 재료 및 방법 17

1. 농장의 번식 및 육성성적 17
2. 농장의 도체성적 분석 19
3. 관능검사 19

Ⅳ. 결과 및 고찰 20

Ⅴ. 요 약 30

ABSTRACT 32

참고문헌 34
Degree
Master
Publisher
제주대학교 대학원
Citation
안철수. (2015). 제주도에서 돼지의 번식형질(산자수 및 이유율)에 대한 품종 다양성 분석
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Faculty of Biotechnology > Animal Biotechnology
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