Relation among body condition score, serum urea nitrogen and cholesterol concentrations, and reproductive performance in high-producing Holstein dairy cows in early lactation

Pamela L. Ruegg From Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, Prince Edward Island, Canada CIA 4P3 (Ruegg), the Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Drive West, Madison, WI 53706 (Goodger), the Veterinary Medical Teaching and Research Center, 18830 Road 112, Tulare, CA 93274 (Holmberg, Weaver), and Dairy Health Management Services, PO Box 1688, Hanford, CA 93230 (Huffman).

Search for other papers by Pamela L. Ruegg in
Current site
Google Scholar
PubMed
Close
 DVM, MPVM
,
William J. Goodger From Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, Prince Edward Island, Canada CIA 4P3 (Ruegg), the Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Drive West, Madison, WI 53706 (Goodger), the Veterinary Medical Teaching and Research Center, 18830 Road 112, Tulare, CA 93274 (Holmberg, Weaver), and Dairy Health Management Services, PO Box 1688, Hanford, CA 93230 (Huffman).

Search for other papers by William J. Goodger in
Current site
Google Scholar
PubMed
Close
 DVM, PhD
,
Charles A. Holmberg From Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, Prince Edward Island, Canada CIA 4P3 (Ruegg), the Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Drive West, Madison, WI 53706 (Goodger), the Veterinary Medical Teaching and Research Center, 18830 Road 112, Tulare, CA 93274 (Holmberg, Weaver), and Dairy Health Management Services, PO Box 1688, Hanford, CA 93230 (Huffman).

Search for other papers by Charles A. Holmberg in
Current site
Google Scholar
PubMed
Close
 DVM
,
Leon D. Weaver From Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, Prince Edward Island, Canada CIA 4P3 (Ruegg), the Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Drive West, Madison, WI 53706 (Goodger), the Veterinary Medical Teaching and Research Center, 18830 Road 112, Tulare, CA 93274 (Holmberg, Weaver), and Dairy Health Management Services, PO Box 1688, Hanford, CA 93230 (Huffman).

Search for other papers by Leon D. Weaver in
Current site
Google Scholar
PubMed
Close
 DVM
, and
E. Michael Huffman From Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, Prince Edward Island, Canada CIA 4P3 (Ruegg), the Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Drive West, Madison, WI 53706 (Goodger), the Veterinary Medical Teaching and Research Center, 18830 Road 112, Tulare, CA 93274 (Holmberg, Weaver), and Dairy Health Management Services, PO Box 1688, Hanford, CA 93230 (Huffman).

Search for other papers by E. Michael Huffman in
Current site
Google Scholar
PubMed
Close
 DVM, MS

Click on author name to view affiliation information

Summary

Body condition scoring (using a 5-point scale with quarterpoint divisions) was performed on 66 Holstein dairy cows that began their second or later lactation in August, September, or October 1988. Cows’ body condition was scored beginning on postpartum day 4 (± 1) and subsequently at postpartum days (± 1) 18, 32, 46, 60, 73 and 87. Blood samples were obtained on the same dates. Reproductive health examinations were conducted by 1 of 2 veterinarians beginning at postpartum day 21. Reproductive performance was evaluated in relation to body condition score and serum urea nitrogen and cholesterol concentrations.

Number of days to first recorded signs of estrus and first breeding were not related to body condition score at calving, amount of condition loss, cumulative 80-day milk yield, or 305-day fat corrected milk yield. Cows that calved with body condition score ≥ 3.50 required more days to conceive. Cows losing > 0.75 points of condition had longer days of conception. Body condition score at calving and amount of condition lost were not related to services per conception or diagnosis of follicular cyst.

Cumulative 80-day milk yield was not related to days to conception or services per conception. Cows that produced = the mean 305-day milk yield required more services and had longer days to conception than cows that produced < the mean 305-day milk yield. Cows with diagnosis of ovarian follicular cysts had greater cumulative 80- and 305-day milk yields than did cows that were not diagnosed with follicular cysts.

Cows conceiving with ≤ 2 services did not differ in average daily milk production, body condition score, or serum urea nitrogen concentration from cows conceiving with > 2 services, but cows that conceived with ≤ 2 services had higher serum cholesterol values than did cows requiring more services.

Summary

Body condition scoring (using a 5-point scale with quarterpoint divisions) was performed on 66 Holstein dairy cows that began their second or later lactation in August, September, or October 1988. Cows’ body condition was scored beginning on postpartum day 4 (± 1) and subsequently at postpartum days (± 1) 18, 32, 46, 60, 73 and 87. Blood samples were obtained on the same dates. Reproductive health examinations were conducted by 1 of 2 veterinarians beginning at postpartum day 21. Reproductive performance was evaluated in relation to body condition score and serum urea nitrogen and cholesterol concentrations.

Number of days to first recorded signs of estrus and first breeding were not related to body condition score at calving, amount of condition loss, cumulative 80-day milk yield, or 305-day fat corrected milk yield. Cows that calved with body condition score ≥ 3.50 required more days to conceive. Cows losing > 0.75 points of condition had longer days of conception. Body condition score at calving and amount of condition lost were not related to services per conception or diagnosis of follicular cyst.

Cumulative 80-day milk yield was not related to days to conception or services per conception. Cows that produced = the mean 305-day milk yield required more services and had longer days to conception than cows that produced < the mean 305-day milk yield. Cows with diagnosis of ovarian follicular cysts had greater cumulative 80- and 305-day milk yields than did cows that were not diagnosed with follicular cysts.

Cows conceiving with ≤ 2 services did not differ in average daily milk production, body condition score, or serum urea nitrogen concentration from cows conceiving with > 2 services, but cows that conceived with ≤ 2 services had higher serum cholesterol values than did cows requiring more services.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 54 54 13
PDF Downloads 8 8 0
Advertisement