The effect of scrotal circumference on pregnancy rates in Mpwapwa breed cattle during September – November 2020 breeding season at Taliri Mpwapwa farm in Tanzania

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dc.citation.issue4
dc.citation.volume9
dc.contributor.authorKabuni KT
dc.contributor.authorLaven R
dc.date.accessioned2024-02-01T19:28:36Z
dc.date.accessioned2024-07-25T06:49:11Z
dc.date.available2021-09-15
dc.date.available2024-02-01T19:28:36Z
dc.date.available2024-07-25T06:49:11Z
dc.date.issued2021-09-15
dc.description.abstractThe goal of this study was to assess the effect of scrotal circumference (SC) on conception rates in Mpwapwa breed cattle during the Sept – Nov 2020 breeding season. Eight Mpwapwa bulls aged ≥3 years were selected from 23 bulls which had passed a structural soundness and movement tests based on having the largest SC and used to mate 324 non-pregnant Mpwapwa cows. Mating was conducted in eight groups with each group randomly assigned a single bull. For each bull, data were collected on age, pre-breeding body condition score (BCS) and body weight, SC and total number of cows bred. Based on p<0.25 value in a univariable model with pregnancy rate as the outcome variable, all of the variables except bodyweight were included in a multivariable logistic regression model with pregnancy rate as the outcome variable. Of those variables only pre-breeding BCS was clearly associated with odds of pregnancy. Compared to a bull with a BCS of 3.5, a bull with a BCS of 3.0 had only 0.29 times the odds (95% confidence interval (CI) 0.15 to 0.57) of getting a cow pregnant during the breeding season. For SC, the data were compatible with a small decrease and a moderate increase in the odds of pregnancy (odds ratio for a 1 cm increase in SC was 1.05 (95%CI 0.84 to 1.3)). Further research on the association between SC and pregnancy rate in Mpwapwa bulls is needed, including identifying whether there is an interaction between BCS and SC and their effect on subsequent fertility.
dc.description.confidentialfalse
dc.format.pagination357-361
dc.identifier.citationKabuni KT, Laven R. (2021). The effect of scrotal circumference on pregnancy rates in mpwapwa breed cattle during september – november 2020 breeding season at taliri mpwapwa farm in tanzania. Journal of Animal Health and Production. 9. 4. (pp. 357-361).
dc.identifier.doi10.17582/journal.jahp/2021/9.4.357.361
dc.identifier.eissn2308-2801
dc.identifier.elements-typejournal-article
dc.identifier.issn2308-2801
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70950
dc.languageEnglish
dc.publisherNexus Academic Publishers (NAP)
dc.publisher.urihttps://nexusacademicpublishers.com/table_contents_detail/11/1928/html
dc.relation.isPartOfJournal of Animal Health and Production
dc.rights(c) The author/sen
dc.rights.licenseCC BY 4.0en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectBreeding soundness evaluation
dc.subjectReproductive performance
dc.subjectFertility
dc.subjectMating and Mpwapwa breed cattle
dc.titleThe effect of scrotal circumference on pregnancy rates in Mpwapwa breed cattle during September – November 2020 breeding season at Taliri Mpwapwa farm in Tanzania
dc.typeJournal article
pubs.elements-id449061
pubs.organisational-groupOther
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