東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

FindBook

Google Book

Amazon

博客來

Associations of Nutrition and Management Strategies During the Dry and Early Lactation Periods with Metabolic- and Inflammation-Related Biomarkers, Health, Milk Production, and Reproductive Performance of Dairy Cows on Commercial Dairy Farms in the Northeastern US.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Associations of Nutrition and Management Strategies During the Dry and Early Lactation Periods with Metabolic- and Inflammation-Related Biomarkers, Health, Milk Production, and Reproductive Performance of Dairy Cows on Commercial Dairy Farms in the Northeastern US./
作者:	Kerwin, Allison Lawton.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	366 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-07, Section: B.
Contained By:	Dissertations Abstracts International83-07B.
標題:	Animal sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28776884
ISBN:	9798762182645

Associations of Nutrition and Management Strategies During the Dry and Early Lactation Periods with Metabolic- and Inflammation-Related Biomarkers, Health, Milk Production, and Reproductive Performance of Dairy Cows on Commercial Dairy Farms in the Northeastern US.
Kerwin, Allison Lawton.

Associations of Nutrition and Management Strategies During the Dry and Early Lactation Periods with Metabolic- and Inflammation-Related Biomarkers, Health, Milk Production, and Reproductive Performance of Dairy Cows on Commercial Dairy Farms in the Northeastern US. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 366 p.

Source: Dissertations Abstracts International, Volume: 83-07, Section: B.

Thesis (Ph.D.)--Cornell University, 2021.

This item must not be sold to any third party vendors.

The transition cow period is arguably the most demanding time in a dairy cow's life due to an increase in nutrient demand, metabolic and endocrine changes, diet changes, and management factors. Minimizing disruptions during this time period can ease the transition into lactation; however, limited controlled- and large epidemiological-research exists exploring the relationships between nutrition and management factors during the transition cow period with postpartum cow health and performance outcomes.Therefore, the objectives were to: 1) provide a description of current management and nutrition practices and cow outcomes in surveyed commercial dairy herds in the Northeastern US, 2) investigate critical thresholds for prepartum nonesterified fatty acids (NEFA) and postpartum NEFA, β-hydroxybutyrate (BHB), and haptoglobin (Hp) and their association with negative health events, milk production, and reproductive performance at the cow- and herd-level, 3) identify relationships between dry period and periparturient period nutritional strategies as characterized by diet contents of starch, forage NDF, or both, with metabolic- (NEFA and BHB) and inflammation-related (Hp) biomarkers, health disorders, milk production, and reproductive performance, and 4) identify relationships between putative transition period management factors with metabolic- and inflammation-related biomarkers, health disorders, milk production, and reproductive performance.In general, elevated biomarkers were associated with negative postpartum outcomes at the cow- and herd-level. Our results support feeding multiparous cows a high fiber close-up and high starch fresh diet and feeding primiparous cows a controlled-energy far-off, high fiber close-up, and high starch fresh diet for optimal postpartum performance and health. During the prepartum period, our results support increasing the proportion of particles on the Penn State Particle Separator 19-mm sieve for the prepartum diets and optimizing bunk space during the close-up period. During the fresh period, our results support maximizing bunk space, avoiding commingling, increasing the feeding frequency, and avoiding high peuNDF240 or uNDF240 diets. At the herd-level, our results support the practice of avoiding vaccination in the calving pen, utilizing a calving pen (moving to a pen when showing signs of labor) compared to a maternity pen (moving to a pen at least 0 to 3 d prior to expected parturition), reducing the number of prepartum and postpartum pen moves for primiparous cows, and avoiding long stays (≥8 h) in the calving pen after parturition.

ISBN: 9798762182645Subjects--Topical Terms:

3174829
Animal sciences.
Subjects--Index Terms:

Biomarkers

Associations of Nutrition and Management Strategies During the Dry and Early Lactation Periods with Metabolic- and Inflammation-Related Biomarkers, Health, Milk Production, and Reproductive Performance of Dairy Cows on Commercial Dairy Farms in the Northeastern US.
LDR:03976nmm a2200385 4500 001 2346511
005 20230315102231.5
006 m o d
007 cr#unu||||||||
008 241004s2021 ||||||||||||||||| ||eng d
020 $a 9798762182645
035 $a (MiAaPQ)AAI28776884
035 $a AAI28776884
040 $a MiAaPQ $c MiAaPQ
100 1 $a Kerwin, Allison Lawton. $0 (orcid)0000-0001-6548-9941 $3 3685622
245 1 0 $a Associations of Nutrition and Management Strategies During the Dry and Early Lactation Periods with Metabolic- and Inflammation-Related Biomarkers, Health, Milk Production, and Reproductive Performance of Dairy Cows on Commercial Dairy Farms in the Northeastern US.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 366 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-07, Section: B.
500 $a Advisor: Overton, Thomas.
502 $a Thesis (Ph.D.)--Cornell University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a The transition cow period is arguably the most demanding time in a dairy cow's life due to an increase in nutrient demand, metabolic and endocrine changes, diet changes, and management factors. Minimizing disruptions during this time period can ease the transition into lactation; however, limited controlled- and large epidemiological-research exists exploring the relationships between nutrition and management factors during the transition cow period with postpartum cow health and performance outcomes.Therefore, the objectives were to: 1) provide a description of current management and nutrition practices and cow outcomes in surveyed commercial dairy herds in the Northeastern US, 2) investigate critical thresholds for prepartum nonesterified fatty acids (NEFA) and postpartum NEFA, β-hydroxybutyrate (BHB), and haptoglobin (Hp) and their association with negative health events, milk production, and reproductive performance at the cow- and herd-level, 3) identify relationships between dry period and periparturient period nutritional strategies as characterized by diet contents of starch, forage NDF, or both, with metabolic- (NEFA and BHB) and inflammation-related (Hp) biomarkers, health disorders, milk production, and reproductive performance, and 4) identify relationships between putative transition period management factors with metabolic- and inflammation-related biomarkers, health disorders, milk production, and reproductive performance.In general, elevated biomarkers were associated with negative postpartum outcomes at the cow- and herd-level. Our results support feeding multiparous cows a high fiber close-up and high starch fresh diet and feeding primiparous cows a controlled-energy far-off, high fiber close-up, and high starch fresh diet for optimal postpartum performance and health. During the prepartum period, our results support increasing the proportion of particles on the Penn State Particle Separator 19-mm sieve for the prepartum diets and optimizing bunk space during the close-up period. During the fresh period, our results support maximizing bunk space, avoiding commingling, increasing the feeding frequency, and avoiding high peuNDF240 or uNDF240 diets. At the herd-level, our results support the practice of avoiding vaccination in the calving pen, utilizing a calving pen (moving to a pen when showing signs of labor) compared to a maternity pen (moving to a pen at least 0 to 3 d prior to expected parturition), reducing the number of prepartum and postpartum pen moves for primiparous cows, and avoiding long stays (≥8 h) in the calving pen after parturition.
590 $a School code: 0058.
650 4 $a Animal sciences. $3 3174829
653 $a Biomarkers
653 $a Health
653 $a Management
653 $a Nutrition
653 $a Performance
653 $a Transition cow
690 $a 0475
710 2 $a Cornell University. $b Animal Science. $3 3286032
773 0 $t Dissertations Abstracts International $g 83-07B.
790 $a 0058
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28776884