Revised
as of Jan. 4, 2012
1. Kaneko,
M and Koketsu, Y. 2012. Gilt development and mating in commercial swine herds
with varying reproductive performance. Theriogenology. In press. On-line
available.
2. Sasaki
Y. and Koketsu, Y. 2012. A herd
management survey on culling guidelines and actual culling practices in three
herd groups based on reproductive productivity in Japan. Journal of Animal
Science. Accepted.
3. Enokida,
M., Sasaki, Y., Hoshino, Y., Saito, H. and Koketsu, Y. 2011. Claw lesions in
lactating sows were associated with culling risk and behavior, but not with
reproductive performance on commercial farms. Livestock Science. 136：256-261.
4. Saito,
H., Sasaki, Y., and Koketsu, Y. 2011. Age at first mating and lifetime
efficiency in commercial herds. Journal of Veterinary Medical Science.
73:555-559.
5. Sasaki,
Y., Saito, H., Shimomura, A. and Koketsu, Y. 2011. Consecutive reproductive
performance after parity 2 and lifetime performance in sows that had reduced
pigs born alive from parity 1 to 2 in Japanese commercial herds.
Livestock Science. 139:252-257.
6. Takanashi,
A. and Koketsu, Y. 2011. Factors
associated with sows having low-lifetime efficiency in commercial herds.
Journal of Veterinary Epidemiology. 15:10-14.
7. Enokida, M. and Koketsu, Y.
2011. Floor slat direction related to
severity of superficial claw lesions in gestating pigs, but not reproductive
performance or behavior. Journal of Veterinary Epidemiology.15:32-38.
8. Ichikawa, H. and Koketsu, Y. 2011. Farrowing induction practices for
periparous sows and reproductive performance in commercial swine herds.
Journal of Veterinary Epidemiology. 15:15-21.
9. Sasaki, Y. and Koketsu, Y. 2011.
Reproductive profile and lifetime efficiency of female pigs by culling reason
in high-performing commercial breeding herds. J. Swine Health and Production.
19 (5): 284-291.
10. Ichikawa, H. and Koketsu, Y. 2011. A
comparison between artificial insemination and natural mating for reproductive
performance in swine commercial herds. Journal of Veterinary Epidemiology. In
press．
11. Takanashi, A., McTaggart, I. and Koketsu, Y. 2011. Swine Herds Achieve High
Performance by Culling Low Lifetime Efficiency Sows in Early Parity. Journal of
Veterinary Medical Science. 73(11):1405-1409.
12. Ichikawa,
H. Kakinuma, F., and Koketsu, Y. 2011. An occurrence of vacuum chewing and
reproductive performance of pregnant pigs on a commercial farm.市川大樹・柿沼文紀・纐纈雄三.生産農場における妊娠豚の偽咀嚼の発生と繁殖成績との関連性. 関東畜産学会．61:34-41.
Kanto Animal Science Journal. 61:34-41.
13. Kaneko,
M. Kurose, T. and Koketsu, Y. 2011.
Reproductive performance and factors associated with female pigs exhibiting
weak estrus in a commercial herd. Meiji University Agriculture
Research Bulletin. 61:1-5. 生産農場において見られた発情徴候が微弱な繁殖雌豚の繁殖成績とその関連因子.明治大学農学部研究報告.61:1-5.
14. Takanashi, A., K. Fujimoto, K. and Koketsu,
Y. 2011. An association between the reservice interval and farrowing
performance of female pigs in Japanese commercial breeding herds. (高梨ありこ・藤本佳那・纐纈雄三. 国内生産農場における繁殖母豚の種付け後不受胎による再種付け間隔と分娩成績の関連性. 関東畜産学会)Kanto
Animal Science Journal.62:1-6.
15. Kaneko,
M. Maekawa, A., Matsuda, T. and Koketsu, Y. 2012. An association between feed
intake in farrowing barns and reproductive performance for Landrace and Large
White female pigs.(金子麻衣・前川綾香・松田哲哉・纐纈雄三．2012．ランドレース種と大ヨークシャー種における妊娠末期と授乳期の飼料摂取量と授乳・繁殖成績との関連性) 明治大学農学部研究報告．In press.
16. Saito,
H., Sasaki, Y. Hoshino and Koketsu, K. 2010. An occurrence of decreased numbers
of pigs born alive in parity 2 sows in commercial herds. Livestock Science. 128: 189-192.
17. Sasaki,
Y. and Koketsu, Y. 2010. Culling
intervals and culling risks in non-return to service and reserviced female pigs
in commercial herds. Theriogenology. 73:587-594.
18. Enokida,
M., Sasaki, Y., Takai, Y. and Koketsu, Y. 2010. Survivals and risk factors
associated with claw lesions of female pigs on a commercial farm. Journal of
Veterinary Epidemiology. 14:118-123.
19. Takai,
Y. Sasaki, Y. and Koketsu, Y. 2010. Comparisons
in financial returns between double and triple matings in first-serviced and
reserviced female pigs in commercial herds. Journal of Veterinary
Epidemiology. 14:47-54.
20. Sasaki,
Y. and Koketsu, Y. 2010. Euthanasia for
gilts and sows on Japanese swine farms. Journal of Veterinary
Epidemiology. 14:124-129.
21.
Koketsu, Y, Sasaki,Y., Ichikawa, H. and Kaneko, K. 2010. Benchmarking in animal
agriculture: concepts and applications. Journal of Veterinary Epidemiology.
14:105-117.
22. Takai,
Y. Sasaki, Y., and Koketsu, Y. 2010. Comparisons
in financial returns between double and triple matings in first-serviced and
reserviced female pigs in commercial herds. Journal of Veterinary
Epidemiology. 14:47-54.
23. Fujimoto,
K., Takanashi, A. and Koketsu, K. An association between farrowing performance
and reservice interval of female pigs in the three herd groups based on herd
reproductive productivity. Meiji University Agriculture Research Bulletin.
60:7-12藤本佳那・高梨ありこ・纐纈雄三．2010.高生産性農場における雌豚の種付け回数と再種付け間隔及び分娩成績との関連性.明治大学農学部研究報告.60:7-12.
24. Yosuke
Sasaki, Keiji Endo and Yuzo Koketsu. 2010. A comparison in behavior between
prefarrowing female pigs and lactating sows using on-farm point sampling. Meiji
University Agriculture Research Bulletin. 59:61-66.佐々木羊介＊・遠藤圭二・纐纈雄三.
2010. ポイントサンプリング法を用いた生産農場における妊娠末期豚と授乳豚の行動比較. 明治大学農学部研究報告59:61-66.
25. Ogasawara,
A., Enokida, M., and Koketsu, Y. 2010. Mating frequency associated with reproductive
performance in first-serviced and reserviced female pigs in commercial herds.小笠原輝・榎田将司・纐纈雄三．2010. 繁殖雌豚の交配回数と農場生産性による分娩成績との関連性. 関東畜産学会．Kanto
Animal Science Journal.61:1-8.
26. Sasaki,
Y. Tsukahara, T. and Koketsu, Y. 2010. A percentage of sows mated within six
days post weaning in four three-month periods in commercial breeding herds that
were performing differently. Japanese Society of Farm Animal Veterinary
Medicine. 63: 187-190.佐々木羊介・塚原健史・纐纈雄三. 2010.繁殖成績レベルが異なる農場における3ヶ月ごとの離乳後6日以内交配母豚割合.
日本産業動物獣医学会会誌．63:187-190.
27. Hoshino,
Y., Sasaki, Y. and Koketsu, Y. 2009. A high percentage of pigs born dead for
sows in high-, intermediate- and low-performing herds. Journal of Veterinary Medical Science.
71(12): 1579-1583
28. Koketsu,
Y. and Sasaki, Y. 2009. Boar culling and mortality in commercial swine herds.
Theriogenology. 71, 1186-1191.
29. Takai,
Y. and Koketsu, Y. 2009. Double and triple matings associated with reproductive performance
in first-serviced and reserviced female pigs in commercial herds.
Journal of Veterinary Medical Science. 71: 635-639.
30. Takai,
Y. Saito, K., and Koketsu, Y. 2009. Factors associated with a single-mating occurrence in first-
serviced and reserviced female pigs on commercial farms. Journal of
Veterinary Medical Science. 71: 631-634.
31. Hoshino,
Y. and Koketsu, Y. 2009. Assessment of post-farrowing performance in sows having a high number of
pigs born dead on commercial farms. Livestock Science. 125：244-248.
32. Saito,
H. and Koketsu, K. 2009. Factor associated with an occurrence of decreased
numbers of pigs born alive in parity 2 in sows. Journal of Veterinary
Epidemiology. 13:40-45.
33. Takai,
Y. and Koketsu, Y. 2009. Double and triple matings associated with reproductive performance
in first-serviced and reserviced female pigs in commercial herds.
Journal of Veterinary Medical Science. 71: 635-639.
34. Takai,
Y. Saito, K., and Koketsu, Y. 2009. Factors associated with a single-mating occurrence in first-
serviced and reserviced female pigs on commercial farms. Journal of
Veterinary Medical Science. 71: 631-634.
35. Hoshino,
Y. and Koketsu, Y. 2009. An
evaluation of increased lactation length on reproductive efficiency of sows in
commercial herds. Journal of Veterinary Medical Science. 71：299-303.
36. Koketsu,
Y. and Sasaki, Y. 2009. By-parity nonproductive female days in commercial swine
herds. Journal of Veterinary Medical Science. 71：263-267.
37. 星野侑子・溝口康*・佐々木羊介・纐纈雄三. 2009. 繁殖母豚の毛根の付いた体毛からのDNAの抽出法と遺伝子多型の検出法の開発. 明治大学農学部研究報告59(1):9-13.
(Hoshino, Y. Mizoguchi, Y., Sasaki, Y. and Koketsu, Y. 2009. The development of methods for the isolation of DNA and
identification of missense variants from hair
roots of sows. Meiji University Agriculture Research Bulletin. 59:9-13.
38. 余西竜平・佐々木羊介・纐纈雄三.繁殖雌豚農場における雌豚の淘汰までの日数パターン.
2009. 関東畜産学会報59: 59-64. (Culling intervals and
culled reasons in females pigs on commercial breeding farms in Japan. Kanto
Animal Science Journal 59: 59-64.)
39. 余西竜平・佐々木羊介・纐纈雄三.繁殖雌豚農場における雌豚の淘汰までの日数パターン.
2009. 関東畜産学会報59: 59-64. (Culling intervals and
culled reasons in females pigs on commercial breeding farms in Japan. Kanto
Animal Science Journal 59: 59-64.)
40. Sekiguchi,
T. and Koketsu, Y. 2008. A field study of the relationships between behavior,
lifetime reproductive performance and salivary cortisol in stalled gestating
female pigs. Journal of Veterinary Epidemiology.12:99-104.
41. Hoshino,
Y. Tanaka, Y. and Koketsu, Y. 2008. Sitting behavior in lactating sows was not
related with longevity and lifetime performance. Journal of Veterinary
Epidemiology. 12:105-109.
42. Hoshino,
Y. and Koketsu, Y. 2008. A repeatability assessment of sows mated 4-6 days
after weaning in breeding herds. Animal Reproduction Science. 108:22-28.
43. Sasaki,
Y. and Koketsu, Y. 2008. Sows having high
lifetime efficiency and high longevity associated with herd productivity in
commercial herds. Livestock Science 118:140-146.
44. Sasaki,
Y. and Koketsu, Y. 2008. Mortality,
death interval, survivals, and herd risk factors for female pigs in commercial
breeding herds. Journal of
Animal Science. 86: 3159-3165.
45. Takai, Y., Tanaka, Y. and Koketsu, Y. 2008. A
field study of relationships between salivary progesterone concentrations,
backfat thickness, and reproductive performance in sows weaned one litter and
nursed sows. Journal of Veterinary Epidemiology 12: 36-42.
46. Takai,
Y. and Koketsu, Y. 2008. Number of
services and the reservice intervals in relation to suboptimal reproductive
performance in female pigs on commercial farms. Livestock Science.
114:42-47.
47. Tanaka, Y. and Koketsu, Y. 2008. A survey of reproductive performance
and growth performance of pigs on commercial farrow-to-finish swine farms. Journal
of Veterinary Epidemiology. 11(1):18-22.
48. Tanaka,
Y. and Koketsu, Y. 2008. Lactational performance improving postweaning
reproductive performance and lifetime performance on commercial farms. Journal
of Veterinary Medical Science. 70:71-75.
49. Koketsu,
Y. 2008. Five-year trends in female pig mortality on commercial breeding farms
in Japan. Journal of Veterinary Medical Science. 70:25-25.
50. 田中祐樹・高井康孝・星野侑子・佐々木羊介・纐纈雄三.
2008.大規模生産農場における授乳母豚の24時間中の昼と夜間の授乳・姿勢・摂食行動の比較. 関東畜産学会58：71-76. (Tanaka,
Y., Takai, Y., Hoshino, Y., Sasaki, Y., and Koketsu, Y. 2008. Comparisons of
behaviors in lactating sows between daytime and nighttime during 24 hours on a
large commercial farm. Kanto Animal Science Journal58：71-76.).
51. 佐々木羊介・余西竜平・纐纈雄三.2008.国内繁殖雌豚農場における雌豚の死亡までの日数とパターン. 関東畜産学会報. 59: 14-21. ( Sasaki, Y.,
Yonishi, R. and Koketsu, Y. 2008.Death intervals in female pigs on commercial
breeding farms in Japan) 59: 14-21.
52. 澤田賢・佐々木羊介・纐纈雄三．2008.
繁殖雌豚の妊娠期と授乳期における背脂肪厚の測定値と繁殖成績との関連性．関東畜産学会報.(Sawada,
K., Sasaki, Y. and Koketsu, Y. 2008. A relationship between backfat thickness
and reproductive performance on a commercial swine farm) 59: 22-28.
53. 佐々羊介＊・大峰広宣・纐纈雄三. 2008. 妊娠末期豚と授乳豚の姿勢と常同行動と繁殖成績との関連性. 明治大学農学部研究報告 58:13-18.(Sasaki, Y., Oomine, H. and
Koketsu, Y. 2008.A relationship between
behaviors and reproductive performance in prefarrowing female pigs and
lactation sows. Meiji University Agriculture Research Bulletin.
58:13-18.)
54. Koketsu,
Y. 2007. Longevity and efficiency associated with age structures of female pigs
and herd management in commercial breeding herds. Journal of Animal Science. 85:1086-1091.
55. Takai,
Y. and Koketsu, Y. 2007. Identification of a female-pig profile associated with
lower productivity on commercial farms. Theriogenology 68(1):87-92.
56. Sasaki,
Y. and Koketsu, Y. 2007.Variability and repeatability in gestation length
related with litter performances in female pigs on commercial farms.
Theriogenology. 68(2):123-127.
57. Koketsu,
Y. 2007. High-performing swine herds improved reproductive performance
differently from ordinary herds for five years. Journal of Animal Science.
85:3110-3115.
58. Tanaka,
Y. and Koketsu, Y. 2007. A field study on associations of suckling, eating, and
postural behaviors with reproductive performance in lactating sows. Journal of
Veterinary Medical Science. 69:1229-1233..
59. Koketsu,
Y. 2007. Female pig longevity and herd-management factors. Journal of
Veterinary Epidemiology 10:73-77.
60. 纐纈雄三・田中祐樹・関口知典. 2007．行動テストにおける肥育豚の反応および唾液中コルチゾール濃度, 明治大学農学部研究報告57:19-24.(Koketsu,
Y., Tanaka, Y., Sekiguchi, T. 2007. Responses to behavioral tests
and concentrations of salivary cortisol in growing pigs. Meiji Agriculture
Research Bulletin 57:19-24.)
61. 纐纈雄三・渡邉浩一郎・田中祐樹. 2007．生産農場におけるＦ1交雑種とランドレース種の妊娠豚の姿勢・行動と繁殖成績. 関東畜産学会58:25-31. (Koketsu,
Y., Watanabe, K., and Tanaka, Y.
2007. Behaviors and reproductive
performance in F1 crossbred and Landrace female pigs on a commercial swine
farm. 58:25-31.).
62. 関口知典・纐纈雄三．2007.赤外線放射カメラを用いた繁殖雌豚の皮膚表面温度および豚舎内表面温度と繁殖成績との関連性．明治大学農学部研究報告57:85-92.（Sekiguchi, T.
and Koketsu, Y. 2007. Relationships between the Body Surface Temperature of
Breeding Female Pigs Measured by Use of Infrared Thermography, the Ambient
Temperature and Reproductive Performance, Meiji Agriculture Research Bulletin.
57:85-92.
63. Koketsu,
Y., Oodate, M. 2007. Valuation of young consumers for welfare friendly
livestock and poultry products. Kanto Animal Science Journal. 纐纈雄三・大館美佳．動物介在教育による学生消費者の動物福祉を考慮された畜産物への支払い意思金額の変化．関東畜産学会57(2):39-48.
64. Koketsu,
Y., Takenobu, S., and Nakamura, R. 2006. Preweaning mortality risks and
recorded causes of death associated with production factors in swine breeding
herds. Journal of Veterinary Medical Science 68: 821-826.
65. Koketsu,
Y. 2006. Herd-management factors associated with nonproductive days by
breeding-female pigs on commercial farms in Japan. Journal of Veterinary Epidemiology 9,
79-83.
66. Koketsu,
Y. 2006. Reproductive efficiency and herd-management factors in swine breeding
herds. Meiji Agriculture Research Bulletin. 55, 55-60.
67. 纐纈雄三・酒井芙優子. 2006. 農学部学生における食に対する安全・安心意識の現状と動物教育ファームでの教育による認識の変化.
明治大学農学部研究報告56(2):51-57(Koketsu,
Y. and Sakai, F. Influence of animal assisted education using an education farm
on perceptions and opinions regarding food safety in agricultural students, Meiji
Agriculture Research Bulletin).
68. 纐纈雄三・松井明日香・門間俊・関口知典.
2006. 養豚教育ファームでの活動が都市生活を営む農学部学生の心理・生理と養豚への理解に及ぼす影響(Influence
of the Education using a Swine Education Farm on
Perceptions Regarding Pig Production, Psychological and Physiological Measures
of Agricultural Students Living in Urban Areas). 日本養豚学会誌, 43:1-10.
69. Koketsu,
Y. 2005. Six component intervals of nonproductive days in breeding-female pigs
on commercial farms in Japan.
Journal of Animal Science, 83: 1406-1412.
70. Koketsu,
Y. 2005. Within-farm variability in age structure of breeding-female pigs and
reproductive performance on commercial swine breeding farms. Theriogenology. 63：1256-1265.
71. Nagai,
K., Sato, R., and Koketsu, Y. 2004. Influence of animal assisted activity on
perceptions, mood profiles and physiological measurements in agricultural
students living in urban areas. Meiji Agriculture Research Bulletin. 140: 9-23.
（永井久美子・佐藤塁・纐纈雄三.滞在型の動物介在教育が都市生活を営む農学部学生の農業動物への認識と気分・生理に及ぼす影響）
72. Abe,
S. and Koketsu, Y. 2004. Financial benchmarking in Japanese swine farm
enterprises. Journal of Veterinary Epidemiology 8, 21-28.
73. Sekiguchi,
T. and Koketsu, Y. 2004. Behaviors in stalled pregnant females and reproductive
performance on a commercial swine farm. Journal of Animal Science.
82:1482-1487.
74. Urabe,
K. and Koketsu, Y. 2004. Development of environment enrichment devices for
growing pigs Kanto J. Anim. Sci. 54（1）：1-10.
75. Koketsu,
Y. 2003. Re-serviced Females on Commercial Swine Breeding Farms. Journal of Veterinary Medical Science 65
(12): 1287-1291.
76. Koketsu,
Y. 2003. Factors associated with farrowing failure occurrences in reserviced
females on commercial swine farms. Journal of Veterinary Epidemiology. 7:23-29.
77. Koketsu,
Y and Kameyama, T. 2003. Consciousness
of farm
animal welfare and necessity for an educational animal farm in young
generations. Kanto J. Anim. Sci. 53（1）：10-22.
78. Matsumoto,
K. and Koketsu, Y. 2003. Reproductive performance and behavior pattern in
breeding females on British Berkshire farm. Japanese Journal of Swine Science.
40(1):21-25.
79. Koketsu,
Y. and Nomura, K. 2002. Meat preferences and life style of young consumers in
the Kanto urban area using an internet system. Kanto J. Anim. Sci. 52（1）：9−16.
80. Kondo,
T. and Koketsu, Y. 2002. A survey on farm production and management priority in
Japanese pork producers. Japanese Journal of Swine Science. 39 (4):230-237.
81. Koketsu,
Y. 2002. Reproductive productivity measurements in Japanese swine breeding
herds. Journal of Veterinary Medical Science 64(3):195-198.
82. Koketsu,
Y and G. D. Dial. 2002. Administration of prostaglandin F2"
after farrowing alters the association between lactation length and subsequent
litter size in mid- or older parity sows. Theriogenology. 57（2）：837−843
83. Koketsu,
Y. 2000. Retrospective analysis of trends and production factors associated
with sow mortality on swine breeding farms in the U.S.A. Preventive Veterinary
Medicine. 46:249-256.
84. Koketsu,
Y. 2000. Productivity characteristics of high-performing swine farms. Journal
of American Veterinary Medical Association 215(2):376-379.
85. Yang
H., J. E. Pettigrew, L. J. Johnston, G. C. Shurson, J. E. Wheaton, M. White, Y.
Koketsu, A. Sower, and J. Rathmacher. 2000. Effects of dietary lysine intake
during lactation on blood metabolites, hormones, and reproductive performance
in primiparous sows. Journal of Animal Science 78:1001-1009.
86. Koketsu,
Y.1999. Assessment of sows mated during the low productive period after weaning
on pigs farms using early weaning: a field study. Theriogenology.
51(8):1525-1532.
87. Koketsu,
Y., H. Takahashi and K. Akachi. 1999. Longevity, lifetime pig production, and
age at first mating in a cohort of gilts over 6 years. Journal of Veterinary
Medical Science 61(42):1001-1005.
88. Koketsu,
Y., C. Duangkaew, G. D. Dial and D. Reeves. 1999. Within-farm variability in
number of females mated per week during one-year period and breeding herd
productivity on swine farms. Journal of American Veterinary Medical
Association 214(4):520-524.
89. Koketsu,
Y.1999. Influence of cumulative feed intake during early and mid-lactation on luteinizing
hormone secretion and weaning-to-estrus interval in primiparous sows. Journal
of Veterinary Medical Science 61(42):325-329.
90. Koketsu,
Y. and G. D. Dial. 1998. Interactions between the associations of parity,
lactation length, and weaning-to-conception interval with subsequent litter
size in swine herds using early weaning. Preventive Veterinary Medicine
37:113-120.
91. Koketsu,
Y., G. D. Dial, J. E. Pettigrew, J-L Xue, H. Yang and T. Lucia. 1998. Influence
of lactation feed intake on the relationship between lactation length and
reproductive performance, circulating levels of glucose, insulin and LH in
primiparous sows. Animal Reproduction Science, 52(2):153-163.
92. King,
V. L., Y. Koketsu, D. Reeves, JL. Xue, G. D. Dial. 1998. Management factors
associated with swine breeding herd productivity in the USA. Preventive
Veterinary Medicine 35:255-264.
93. Xue,
J-L., T. Lucia, Y. Koketsu, G. D. Dial, and W. E. Marsh. 1998. Effect of mating
frequency and weaning-to-mating interval on sow reproductive performance. Swine
Health and Production 6(4):157-162.
94. Koketsu,
Y and G. D. Dial. 1998. Factors associated with average pig weight at weaning
on farms using early weaning. Animal Science 68:247-253.
95. Koketsu,
Y and G. D. Dial. 1997. Quantitative relationships between reproductive
performance in sows and its risk factors. Pig News and Information
18(2):47N-52N.
96. Koketsu,
Y. and G. D. Dial. 1997. Factors associated with prolonged weaning-to-mating
interval among sows on farms that wean early. Journal of American Veterinary
Medical Association 211:894-898.
97. Koketsu,
Y., G. D. Dial and V. L. King. 1997. Influence of various factors on farrowing
rate on farms using early weaning. Journal of Animal Science 75(10):2580-2587.
98. Xue,
JL. Y. Koketsu, G. D. Dial, J. E. Pettigrew, and A. F. Sower. 1997. Glucose
tolerance, leuteinizing hormone release, and reproductive performance of
first-litter sows fed two levels of energy diets during gestation. Journal of
Animal Science 75:1845-1852.
99. Koketsu,
Y., G. D. Dial, J. E. Pettigrew, and V. L. King. 1997. Influence of feed intake
during individual weeks of lactation on reproductive performance of sows.
Livestock Production Science. 49:217-225.
100.Koketsu,
Y. and G. D. Dial. 1997. Factors influencing the post weaning reproductive
performance of sows on commercial farms. Theriogenology. 47(7):1445-1461.
101.Koketsu,
Y., G. D. Dial, and V. L. King. 1997. Returns to service after mating and
removal of sows for reproductive reasons from commercial swine farms.
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