The effect of calving season on reproductive performance of Jersey cows
Dairy records, containing 1269 lactation record of 462 Jersey dairy cows collected over 16 years, from an agricultural state farm were used. Data for reproductive performance of cows were also collected. Means of the herd for lactation milk yield, calving interval, days open, interval from calving t...
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Croatian Dairy Union
2017-01-01
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| Series: | Mljekarstvo |
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| Online Access: | https://hrcak.srce.hr/file/275651 |
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| author | Ercan Soydan Mehmet Kuran |
| author_facet | Ercan Soydan Mehmet Kuran |
| author_sort | Ercan Soydan |
| collection | DOAJ |
| description | Dairy records, containing 1269 lactation record of 462 Jersey dairy cows collected over 16 years, from an agricultural state farm were used. Data for reproductive performance of cows were also collected. Means of the herd for lactation milk yield, calving interval, days open, interval from calving to the first insemination, lactation length, gestation length and dry period were 3195.7±20.2 kg, 366.6±1.7 d, 92.9±1.6 d, 78.0±1.3 d, 301.7±1.1 d, 275.2±0.2 d and 69.3±0.8 d, respectively. The effect of calving season (winter, spring, summer and autumn) on reproductive performance for high, low and moderate milk-yield cows was investigated. Calving season affected the days from calving to first insemination in high and moderate yielding cows (P<0.001) while didn’t affect low yielding cows. In summer, days open in high yielding cows were 35 days longer compared to winter season (P<0.001) as observed for moderate yielding cows (P<0.01). In high yielding cows, calving interval was 18 days longer in spring compared to winter calving season. Calving season also affected the first service conception rate in high yielding cows (P<0.05). Services per conception in autumn were lower than the other seasons (P<0.001). In conclusion, high yielding dairy cows need more attention in summer season with respect to body condition score, dietary energy: protein ratio, uterus health and elimination of heat stress, to get more profit in dairy farm. |
| format | Article |
| id | doaj-art-5da394c40e544ae18e81687fe2492da3 |
| institution | Kabale University |
| issn | 0026-704X 1846-4025 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Croatian Dairy Union |
| record_format | Article |
| series | Mljekarstvo |
| spelling | doaj-art-5da394c40e544ae18e81687fe2492da32025-08-20T03:34:45ZengCroatian Dairy UnionMljekarstvo0026-704X1846-40252017-01-0167429730410.15567/mljekarstvo.2017.0407The effect of calving season on reproductive performance of Jersey cowsErcan Soydan0Mehmet Kuran1University of Ondokuz Mayıs, Department of Agricultural Biotechnology, Samsun, TurkeyUniversity of Ondokuz Mayıs, Department of Agricultural Biotechnology, Samsun, TurkeyDairy records, containing 1269 lactation record of 462 Jersey dairy cows collected over 16 years, from an agricultural state farm were used. Data for reproductive performance of cows were also collected. Means of the herd for lactation milk yield, calving interval, days open, interval from calving to the first insemination, lactation length, gestation length and dry period were 3195.7±20.2 kg, 366.6±1.7 d, 92.9±1.6 d, 78.0±1.3 d, 301.7±1.1 d, 275.2±0.2 d and 69.3±0.8 d, respectively. The effect of calving season (winter, spring, summer and autumn) on reproductive performance for high, low and moderate milk-yield cows was investigated. Calving season affected the days from calving to first insemination in high and moderate yielding cows (P<0.001) while didn’t affect low yielding cows. In summer, days open in high yielding cows were 35 days longer compared to winter season (P<0.001) as observed for moderate yielding cows (P<0.01). In high yielding cows, calving interval was 18 days longer in spring compared to winter calving season. Calving season also affected the first service conception rate in high yielding cows (P<0.05). Services per conception in autumn were lower than the other seasons (P<0.001). In conclusion, high yielding dairy cows need more attention in summer season with respect to body condition score, dietary energy: protein ratio, uterus health and elimination of heat stress, to get more profit in dairy farm.https://hrcak.srce.hr/file/275651Jersey cowreproductive performancecalving season |
| spellingShingle | Ercan Soydan Mehmet Kuran The effect of calving season on reproductive performance of Jersey cows Mljekarstvo Jersey cow reproductive performance calving season |
| title | The effect of calving season on reproductive performance of Jersey cows |
| title_full | The effect of calving season on reproductive performance of Jersey cows |
| title_fullStr | The effect of calving season on reproductive performance of Jersey cows |
| title_full_unstemmed | The effect of calving season on reproductive performance of Jersey cows |
| title_short | The effect of calving season on reproductive performance of Jersey cows |
| title_sort | effect of calving season on reproductive performance of jersey cows |
| topic | Jersey cow reproductive performance calving season |
| url | https://hrcak.srce.hr/file/275651 |
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