Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria
Calving records of N'darna and Keteku cows on range in the humid tropical environment of southwestern Nigeria were analysed to determine the effects of cow age at first calving, period of calving and calving sequence on length of calving intervals. Cow age at first calving and calving sequence...
Spremljeno u:
| Glavni autor: | |
|---|---|
| Format: | Članak |
| Jezik: | engleski |
| Izdano: |
Faculty of Agriculture, University of Ife
2015
|
| Teme: | |
| Online pristup: | http://localhost:8080/xmlui/handle/123456789/2539 |
| Oznake: |
Dodaj oznaku
Bez oznaka, Budi prvi tko označuje ovaj zapis!
|
| _version_ | 1810764568386863104 |
|---|---|
| author | Akinokun, O. |
| author_facet | Akinokun, O. |
| author_sort | Akinokun, O. |
| collection | DSpace |
| description | Calving records of N'darna and Keteku cows on range in the humid tropical environment of southwestern Nigeria were analysed to determine the effects of cow age at first calving, period of calving and calving sequence on length of calving intervals. Cow age at first calving and calving sequence significantly affected calving intervals (P < .01). Heifers calving for the first time at 3.6 - 4 years had an average calving interval of 511 days while heifers calving for the first time before 3.6 years had intervals that were 36 days longer. Those calving for the first time at over four years had average calving intervals that were shorter by 73 days. There was a progressive decrease in length of calving interval as calving sequence increased. Period of calving had no significant effect on length of calving interval. |
| format | Article |
| id | oai:ir.oauife.edu.ng:123456789-2539 |
| institution | My University |
| language | English |
| publishDate | 2015 |
| publisher | Faculty of Agriculture, University of Ife |
| record_format | dspace |
| spelling | oai:ir.oauife.edu.ng:123456789-25392023-05-13T11:04:19Z Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria Akinokun, O. Cattle Length of calving interval Period of calving Calving sequence Calving Calving records of N'darna and Keteku cows on range in the humid tropical environment of southwestern Nigeria were analysed to determine the effects of cow age at first calving, period of calving and calving sequence on length of calving intervals. Cow age at first calving and calving sequence significantly affected calving intervals (P < .01). Heifers calving for the first time at 3.6 - 4 years had an average calving interval of 511 days while heifers calving for the first time before 3.6 years had intervals that were 36 days longer. Those calving for the first time at over four years had average calving intervals that were shorter by 73 days. There was a progressive decrease in length of calving interval as calving sequence increased. Period of calving had no significant effect on length of calving interval. 2015-09-18T08:59:30Z 2018-10-27T13:51:32Z 2015-09-18T08:59:30Z 2018-10-27T13:51:32Z 1982 Article Akinokun, O. (1982) Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria. Ife Journal of Agriculture, 4(1 & 2). http://localhost:8080/xmlui/handle/123456789/2539 en PDF application/pdf Nigeria Faculty of Agriculture, University of Ife |
| spellingShingle | Cattle Length of calving interval Period of calving Calving sequence Calving Akinokun, O. Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria |
| title | Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria |
| title_full | Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria |
| title_fullStr | Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria |
| title_full_unstemmed | Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria |
| title_short | Effects of Age of Cow at First calving, Period of Calving and Calving Sequence on Calving Interval of N’dama and Keteku Cattle, and their Crosses in Southwestern Nigeria |
| title_sort | effects of age of cow at first calving period of calving and calving sequence on calving interval of n dama and keteku cattle and their crosses in southwestern nigeria |
| topic | Cattle Length of calving interval Period of calving Calving sequence Calving |
| url | http://localhost:8080/xmlui/handle/123456789/2539 |
| work_keys_str_mv | AT akinokuno effectsofageofcowatfirstcalvingperiodofcalvingandcalvingsequenceoncalvingintervalofndamaandketekucattleandtheircrossesinsouthwesternnigeria |