Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds
The main objective of the present study was to determine whether composition of total mixed ration influences reproductive performance in high-producing commercial dairy farms. Dairy producers and nutritional consultants from 48 dairy farms located in Wisconsin agreed to provide reproductive data an...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | JDS Communications |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666910223000030 |
| _version_ | 1797788373723643904 |
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| author | Carlos E.C. Consentini Alexandre H. Souza Roberto Sartori Paulo D. Carvalho Randy Shaver Milo C. Wiltbank |
| author_facet | Carlos E.C. Consentini Alexandre H. Souza Roberto Sartori Paulo D. Carvalho Randy Shaver Milo C. Wiltbank |
| author_sort | Carlos E.C. Consentini |
| collection | DOAJ |
| description | The main objective of the present study was to determine whether composition of total mixed ration influences reproductive performance in high-producing commercial dairy farms. Dairy producers and nutritional consultants from 48 dairy farms located in Wisconsin agreed to provide reproductive data and dietary information on high milk production pens during the main breeding period for the previous 12 mo. Dietary components (percentage of dry matter) were crude protein (CP), rumen degradable (RDP) and undegradable (RUP) protein, neutral detergent fiber (NDF), nonfiber carbohydrates (NFC), starch, and fat. Reproductive data were service rate (SR), overall pregnancy per artificial insemination (P/AI) and P/AI at the first service, 21-d pregnancy rate (PR), days open, and percentage of cows pregnant by 150 d in milk (PREG150). Participating herds had lactating Holstein cows (range = 143 to 2,717) housed in freestall facilities. Statistical analyses were performed with CORR and GLIMMIX of SAS (SAS Institute Inc.). Daily average milk production of herds was 38.9 ± 0.60 kg/d (30.0 to 50.4 kg/d). Overall SR was 58.5% (39–73) and P/AI was 36.1% (22–49). Overall 21-d PR was 20.3% (10–42%). Correlation between SR and PR was 0.59, whereas correlation of overall P/AI and P/AI at first service with PR were both 0.72. Similarly, for PREG150, correlation with overall P/AI (0.63) and P/AI at first service (0.66) were greater than with SR (0.48). There was large variation in diet composition, with CP varying from 16.0 to 18.7%, NDF from 24.9 to 35.1%, NFC from 31.7 to 46.6%, starch from 20.1 to 30.8%, and fat from 3.1 to 6.7%. Overall, there were no detectable associations of CP, RDP, and RUP with reproductive measures. The strongest relationship was a decrease in reproductive performance with increasing dietary NFC including overall P/AI (−0.48), P/AI at first service (−0.51), and PREG150 (−0.33). Starch also had a negative relationship with P/AI at first service (−0.35). Conversely, greater NDF was positively associated with P/AI at first service (0.34). Fat content was also positively associated with P/AI at first service (0.34). When NFC was divided in tertiles (<40, 40 to 42.2, and >42.2% NFC), the highest tertile had lower overall P/AI (39 vs. 36 vs. 31%), P/AI at first service (43 vs. 40 vs. 33%), and PREG150 (54 vs. 53 vs. 47%). In conclusion, farms with greater dietary NFC may have compromised reproductive performance. Correspondingly, herds with greater NDF content may achieve high milk production with potentially positive associations with reproduction. Other relationships of dietary components on reproduction were not as obvious in this herd-level analysis. |
| first_indexed | 2024-03-13T01:35:40Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2666-9102 |
| language | English |
| last_indexed | 2024-03-13T01:35:40Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | JDS Communications |
| spelling | doaj.art-29b4dbe5cf8047ec94679e74fb31d7d12023-07-04T05:11:14ZengElsevierJDS Communications2666-91022023-03-0142138143Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herdsCarlos E.C. Consentini0Alexandre H. Souza1Roberto Sartori2Paulo D. Carvalho3Randy Shaver4Milo C. Wiltbank5Department of Animal Science, ESALQ, University of São Paulo, Piracicaba, SP, Brazil, 13418-900; Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison 53706Cargill Animal Nutrition and Health, Campinas, SP, Brazil, 13091-611Department of Animal Science, ESALQ, University of São Paulo, Piracicaba, SP, Brazil, 13418-900; Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison 53706Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison 53706Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison 53706Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison 53706; Corresponding authorThe main objective of the present study was to determine whether composition of total mixed ration influences reproductive performance in high-producing commercial dairy farms. Dairy producers and nutritional consultants from 48 dairy farms located in Wisconsin agreed to provide reproductive data and dietary information on high milk production pens during the main breeding period for the previous 12 mo. Dietary components (percentage of dry matter) were crude protein (CP), rumen degradable (RDP) and undegradable (RUP) protein, neutral detergent fiber (NDF), nonfiber carbohydrates (NFC), starch, and fat. Reproductive data were service rate (SR), overall pregnancy per artificial insemination (P/AI) and P/AI at the first service, 21-d pregnancy rate (PR), days open, and percentage of cows pregnant by 150 d in milk (PREG150). Participating herds had lactating Holstein cows (range = 143 to 2,717) housed in freestall facilities. Statistical analyses were performed with CORR and GLIMMIX of SAS (SAS Institute Inc.). Daily average milk production of herds was 38.9 ± 0.60 kg/d (30.0 to 50.4 kg/d). Overall SR was 58.5% (39–73) and P/AI was 36.1% (22–49). Overall 21-d PR was 20.3% (10–42%). Correlation between SR and PR was 0.59, whereas correlation of overall P/AI and P/AI at first service with PR were both 0.72. Similarly, for PREG150, correlation with overall P/AI (0.63) and P/AI at first service (0.66) were greater than with SR (0.48). There was large variation in diet composition, with CP varying from 16.0 to 18.7%, NDF from 24.9 to 35.1%, NFC from 31.7 to 46.6%, starch from 20.1 to 30.8%, and fat from 3.1 to 6.7%. Overall, there were no detectable associations of CP, RDP, and RUP with reproductive measures. The strongest relationship was a decrease in reproductive performance with increasing dietary NFC including overall P/AI (−0.48), P/AI at first service (−0.51), and PREG150 (−0.33). Starch also had a negative relationship with P/AI at first service (−0.35). Conversely, greater NDF was positively associated with P/AI at first service (0.34). Fat content was also positively associated with P/AI at first service (0.34). When NFC was divided in tertiles (<40, 40 to 42.2, and >42.2% NFC), the highest tertile had lower overall P/AI (39 vs. 36 vs. 31%), P/AI at first service (43 vs. 40 vs. 33%), and PREG150 (54 vs. 53 vs. 47%). In conclusion, farms with greater dietary NFC may have compromised reproductive performance. Correspondingly, herds with greater NDF content may achieve high milk production with potentially positive associations with reproduction. Other relationships of dietary components on reproduction were not as obvious in this herd-level analysis.http://www.sciencedirect.com/science/article/pii/S2666910223000030 |
| spellingShingle | Carlos E.C. Consentini Alexandre H. Souza Roberto Sartori Paulo D. Carvalho Randy Shaver Milo C. Wiltbank Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds JDS Communications |
| title | Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds |
| title_full | Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds |
| title_fullStr | Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds |
| title_full_unstemmed | Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds |
| title_short | Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds |
| title_sort | relationships among total mixed ration nutritional components and reproductive performance in high producing dairy herds |
| url | http://www.sciencedirect.com/science/article/pii/S2666910223000030 |
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