Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia
This study evaluated the effects of genotype, parity, days in milk (DIM), calving season (CS), and calving year (CY) on the milk yield and composition traits of four hundred twenty lactating crossbred dairy cows in 13 districts in Ethiopia. Test day milk yield (TMY), protein (P), fat (F), lactose (L...
| Autores principales: | , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Chiang Mai University
2023
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/159298 |
| _version_ | 1855520343938039808 |
|---|---|
| author | Bekele, R. Taye, M. Abebe, G. Meseret, Selam |
| author_browse | Abebe, G. Bekele, R. Meseret, Selam Taye, M. |
| author_facet | Bekele, R. Taye, M. Abebe, G. Meseret, Selam |
| author_sort | Bekele, R. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | This study evaluated the effects of genotype, parity, days in milk (DIM), calving season (CS), and calving year (CY) on the milk yield and composition traits of four hundred twenty lactating crossbred dairy cows in 13 districts in Ethiopia. Test day milk yield (TMY), protein (P), fat (F), lactose (L), solid not fat (SNF), density (D), total solids (TS), total protein (TP), casein (CN), whey (W), salts (S), and freezing point (FP) were determined using standard procedures. The data were analyzed using generalized linear models (GLM) using R software. Cows in the genetic group ≥ 87.5%, at 101–200 days, calved in the rainy season, in 2022, and at second parity all had the highest value of TMY. F, SNF, and TS were significantly (P<0.05) influenced by genotype, DIM, CS, CY, and parity. F was higher in cows with ≤ 50% genetic group, in early and late lactation, in the dry season, in 2020, in primiparous and above parity three cows than their counterparts. Proteins (P, TP, CN, and W) were affected by genotype, DIM, and CY but not by CS and parity (P<0.05). All milk proteins had a higher value in cows with ≤ 50% genetic group, and in early lactation. In this study, milk yield and composition were affected by genetic and non-genetic factors, providing an opportunity for crossbreeding programs to balance the quality and quantity of milk by manipulating the level of the exotic gene found in cows, choosing the best agro-climatic conditions, and improving the level of management. |
| format | Journal Article |
| id | CGSpace159298 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Chiang Mai University |
| publisherStr | Chiang Mai University |
| record_format | dspace |
| spelling | CGSpace1592982024-11-15T08:52:20Z Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia Bekele, R. Taye, M. Abebe, G. Meseret, Selam crossbred genetics milk yield dairying cattle This study evaluated the effects of genotype, parity, days in milk (DIM), calving season (CS), and calving year (CY) on the milk yield and composition traits of four hundred twenty lactating crossbred dairy cows in 13 districts in Ethiopia. Test day milk yield (TMY), protein (P), fat (F), lactose (L), solid not fat (SNF), density (D), total solids (TS), total protein (TP), casein (CN), whey (W), salts (S), and freezing point (FP) were determined using standard procedures. The data were analyzed using generalized linear models (GLM) using R software. Cows in the genetic group ≥ 87.5%, at 101–200 days, calved in the rainy season, in 2022, and at second parity all had the highest value of TMY. F, SNF, and TS were significantly (P<0.05) influenced by genotype, DIM, CS, CY, and parity. F was higher in cows with ≤ 50% genetic group, in early and late lactation, in the dry season, in 2020, in primiparous and above parity three cows than their counterparts. Proteins (P, TP, CN, and W) were affected by genotype, DIM, and CY but not by CS and parity (P<0.05). All milk proteins had a higher value in cows with ≤ 50% genetic group, and in early lactation. In this study, milk yield and composition were affected by genetic and non-genetic factors, providing an opportunity for crossbreeding programs to balance the quality and quantity of milk by manipulating the level of the exotic gene found in cows, choosing the best agro-climatic conditions, and improving the level of management. 2023-10-05 2024-11-06T08:45:53Z 2024-11-06T08:45:53Z Journal Article https://hdl.handle.net/10568/159298 en Open Access Chiang Mai University Bekele, R., Taye, M., Abebe, G. and Meseret, S. 2023. Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia. Veterinary Integrative Sciences 21(3):717–733. |
| spellingShingle | crossbred genetics milk yield dairying cattle Bekele, R. Taye, M. Abebe, G. Meseret, Selam Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia |
| title | Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia |
| title_full | Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia |
| title_fullStr | Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia |
| title_full_unstemmed | Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia |
| title_short | Genetic and non-genetic Factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in Ethiopia |
| title_sort | genetic and non genetic factors affecting test day milk yield and milk composition traits in crossbred dairy cattle in ethiopia |
| topic | crossbred genetics milk yield dairying cattle |
| url | https://hdl.handle.net/10568/159298 |
| work_keys_str_mv | AT bekeler geneticandnongeneticfactorsaffectingtestdaymilkyieldandmilkcompositiontraitsincrossbreddairycattleinethiopia AT tayem geneticandnongeneticfactorsaffectingtestdaymilkyieldandmilkcompositiontraitsincrossbreddairycattleinethiopia AT abebeg geneticandnongeneticfactorsaffectingtestdaymilkyieldandmilkcompositiontraitsincrossbreddairycattleinethiopia AT meseretselam geneticandnongeneticfactorsaffectingtestdaymilkyieldandmilkcompositiontraitsincrossbreddairycattleinethiopia |