Reproductive function in the Australian Swamp buffalo bull: Age effects and seasonal effects.

Reproductive function in the Australian Swamp buffalo bull: Age effects and seasonal effects. Research Abstract Details 

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Reproductive function in the Australian Swamp buffalo bull: Age effects and seasonal effects. Abstract Text:

C J M C Cool,K W Entwistle,

Swamp buffalo exhibited seasonal variations in daily sperm production and in daily sperm production per gram of testis parenchyma. Maximum rates occurred in the late wet season and early dry season. There was no spermatogenesis detected in 1-yr-old bulls. Daily sperm production per gram of testis parenchyma increased thereafter up to 3.5 yr of age, and was similar in all older age groups. Scrotal circumference in bulls of this age ranged from 20 to 21 cm. Scrotal circumference and daily sperm production increased rapidly up to maturity, and increased less rapidly thereafter. Mean+/-SEM daily sperm production per gram in 146 mature buffalo bulls was 14.04 x 10(6)+/-0.39 x 10(6) and mean+/-SEM daily sperm production was 1.86 x 10(9)+/- 0.07 x 10(9). Mean+/-SEM epididymal sperm reserves in adult bulls numbered 9.7 x 10(9) +/- 0.07 x 10(9). These were distributed between the caput, corpus and cauda epididymis in the proportions of 28.82, 14.63 and 60.55, respectively. Mean+/-SEM epididymal transit time was 5.65+/-0.24 d.

Reproductive function in the Australian Swamp buffalo bull: Age effects and seasonal effects. Publishing Authors By Initials

CJ M C Cool,KW Entwistle,

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Reproductive function in the Australian Swamp buffalo bull: Age effects and seasonal effects. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Theriogenology

VOLUME: 31

Page Numbers: 583-94

Journal Abbreviation: Theriogenology

ISSN: 0093-691X

DAY: 26

MONTH: Mar

YEAR: 1989

Reproductive function in the Australian Swamp buffalo bull: Age effects and seasonal effects. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Reproductive function in the Australian Swamp buffalo bull: Age effects and seasonal effects.

AFFILIATION: Berrimah Research Farm, P.O. Box 79, Berrimah 0828, Darwin, Northern Territory Australia.

Country: United States

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MEDLINETA: Theriogenology

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