Maximillian, Manzi and Rydhmer, Lotta and Ntawubizi, Martin and D’Andre Hirwa, Claire and Karege, Callixte and Strandberg, Erling
(2020).
Milk production and lactation length in Ankole cattle and Ankole crossbreds in Rwanda.
Tropical Animal Health and Production. 52
, 2937-2943
[Research article]
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Abstract
This study assessed daily milk yield (DMY), 100-day (MY100), and 305-day (MY305) milk yield, and lactation length (LL) in purebred Ankole cattle and Ankole crossbreds, and the influence of environmental factors on these traits. Milk yield data were obtained for 865 cows and 1234 lactations and analyzed using a mixed linear model. The overall least squares mean of DMY, MY100, and MY305 across breed groups was 2.7 L (N = 1234, SD = 1.7), 262 L (N = 959, SD = 176), and 759 L (N = 448, SD = 439), respectively, while the average lactation length was 256 days (N = 960, SD = 122). All factors included (breed group, season and year of calving, and parity) were significant for yield traits, except season of calving for MY305. First-parity cows had the lowest milk production, and fourth-parity cows the highest. For all traits, pure Ankole cows had the lowest milk yield. Among the crossbreds, there was no significant difference between Ankole x Friesian, Ankole-Jersey mother x Sahiwal sire, and Ankole-Sahiwal mother x Jersey sire, or between Ankole x Sahiwal and Ankole-Sahiwal mother x Sahiwal sire. It was concluded that Ankole crosses with Friesian or Jersey can be beneficial, even under a management system of limited nutrition as in Rwanda.
| Authors/Creators: | Maximillian, Manzi and Rydhmer, Lotta and Ntawubizi, Martin and D’Andre Hirwa, Claire and Karege, Callixte and Strandberg, Erling | ||||||
|---|---|---|---|---|---|---|---|
| Title: | Milk production and lactation length in Ankole cattle and Ankole crossbreds in Rwanda | ||||||
| Series Name/Journal: | Tropical Animal Health and Production | ||||||
| Year of publishing : | 2020 | ||||||
| Volume: | 52 | ||||||
| Page range: | 2937-2943 | ||||||
| Number of Pages: | 7 | ||||||
| Publisher: | SPRINGER | ||||||
| ISSN: | 0049-4747 | ||||||
| Language: | English | ||||||
| Publication Type: | Research article | ||||||
| Article category: | Scientific peer reviewed | ||||||
| Version: | Published version | ||||||
| Copyright: | Creative Commons: Attribution 4.0 | ||||||
| Full Text Status: | Public | ||||||
| Subjects: | (A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science. | ||||||
| Keywords: | Breed groups, Crossbreeding, Milk yield | ||||||
| URN:NBN: | urn:nbn:se:slu:epsilon-p-106713 | ||||||
| Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-106713 | ||||||
| Additional ID: |
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| ID Code: | 18722 | ||||||
| Faculty: | VH - Faculty of Veterinary Medicine and Animal Science | ||||||
| Department: | (VH) > Dept. of Animal Breeding and Genetics | ||||||
| Deposited By: | SLUpub Connector | ||||||
| Deposited On: | 24 Nov 2020 13:03 | ||||||
| Metadata Last Modified: | 15 Jan 2021 19:26 |
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