Japanese Journal of Sheep Science

Studies on Reproductive Performance of Booroola-Dorset Ewes

Yutaka FUKUI, Shuzo GODA, Fumiharu KATAOKA, Hitoshi ONO

1991 Volume 1991 Issue 28 Pages 1-4
Published: December 10, 1991
Released on J-STAGE: April 22, 2011

DOIhttps://doi.org/10.11595/jpnjsheepsci1964.1991.1

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Seasonal Changes in Semen Qaulity and Plasma Concentration of Testosterone in Rams

Yutaka FUKUI, Katsuhiko SAKAMOTO, Kazue OHSAKI, Hitoshi ONO

1991 Volume 1991 Issue 28 Pages 5-11
Published: December 10, 1991
Released on J-STAGE: April 22, 2011

DOIhttps://doi.org/10.11595/jpnjsheepsci1964.1991.5

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Distribution of Digesta in Diverse Sites of the Gastrointestinal Tract of Sheep

Junjiro SEKINE, Ryozo OURA, Hajime MIYAZAKI, Masahiro OKAMOTO

1991 Volume 1991 Issue 28 Pages 12-16
Published: December 10, 1991
Released on J-STAGE: April 22, 2011

DOIhttps://doi.org/10.11595/jpnjsheepsci1964.1991.12

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Comparison of Ammoniated Rice Straw, Nontreated Rice Straw and Orchardgrass Hay for Fattening Lambs

Kentaro DEOKA, Kazunori YAMAUCHI, Yoichiro SAGAE

1991 Volume 1991 Issue 28 Pages 17-21
Published: December 10, 1991
Released on J-STAGE: April 22, 2011

DOIhttps://doi.org/10.11595/jpnjsheepsci1964.1991.17

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Feed intake and carcass data of Suffolk ram lambs fed either ammoniated rice straw, nontreated rice straw or orchardgrass hay were compared.
Lambs in individual pens were fed one of those forages ad libitum with concentrace from day 90-97 of age to day 172-176. Lambs fed each forage consumed 2.1% body weight of concentrate at the basis of dry matter. Body weights at the start and end of the experiment were 30.4-30.8 kg and 50.3-51.9 kg, respectively.
Dry matter intake of ammoniated rice straw was higher than that of nontreated rice straw (P<0.05). Total intake of crude protein and total digestible nutrients of lambs fed ammoniated rice straw or hay were higher than those of lambs fed nontreated rice straw (P<0.01). Daily gain of lambs fed nontreated rice straw was slightly lower than those of lambs fed ammonited rice straw or hay. While carcass data of lambs fed each forage were not significantly different, backfat depth of lambs fed nontreated rice straw was lower than that of lambs fed ammoniated rice straw or hay.

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Effects of Concentrate Level on Feed Intake, Body Weight Change and Blood Chemical Findings in Ewes Fed Ammoniated Rice Straw during Early Lactation

Kentaro DEOKA, Naohito KUSAKARI, Kazunori YAMAUCHI, Yoichiro SAGAE, Ki ...

1991 Volume 1991 Issue 28 Pages 22-27
Published: December 10, 1991
Released on J-STAGE: April 22, 2011

DOIhttps://doi.org/10.11595/jpnjsheepsci1964.1991.22

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Ammoniated rice straw was fed ad libitum with two levels of concentrate to twelve Suffolk ewes, each suckling two lambs. Ewes were individually penned throughout the first six weeks of lactation, and fed either 1.4% or 2.0% body weight of concentrate at the basis of dry matter.
Dry matter intake of concentrate in ewes fed 2.0% concentrate was higher than that fed 1.4% (P< 0.01). Dry matter intake of ammoniated rice straw in ewes fed 2.0% concentrate was lower than that fed 1.4% (P< 0.05). Total intake of crude protein and total digestible nutrients in ewes fed 2.0% concentrate were higher than that fed 1.4% (P< 0.01). Nutrient intake as a percentage of NRC requirements was about 80% and 100% in ewes fed 1.4% and 2.0% concentrate respectively.
Body weight reduction of ewes fed 2.0% concentrate was lower than that fed 1.4% (P< 0.05). Daily gain of lambs suckled by ewes fed 2.0% concentrate was higher than that suckled by ewes fed 1.4% concentrate (P < 0.01).
The concentration of serum free fatty acid in ewes fed 1.4% concentrate was elevated relative to those fed 2.0% concentrate, indicating more mobilization from the body's fat stores.

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...

1991 Volume 1991 Issue 28 Pages 28-33
Published: December 10, 1991
Released on J-STAGE: April 22, 2011

DOIhttps://doi.org/10.11595/jpnjsheepsci1964.1991.28

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[title in Japanese]

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1991 Volume 1991 Issue 28 Pages 34-42
Published: December 10, 1991
Released on J-STAGE: April 22, 2011

DOIhttps://doi.org/10.11595/jpnjsheepsci1964.1991.34

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