在过渡期期间,乳牛的平价和营养总通道消化能力在过渡期
Julio de M Vettori1, Damiano Cavallini2, Melania Giammarco1
1Dipartimento di Scienze Mediche Veterinarie, University of Teramo, Teramo, Italy.
Veterinary and animal science
|September 22, 2023
概括
在过渡期内,多牛的纤维消化能力高于初牛. 营养总通道消化率 (nTTD) 的这些差异对奶牛的料配方产生了影响.
科学领域:
- 动物科学动物科学
- 乳制品营养 乳制品营养
- 动物生理学 动物生理学
背景情况:
- 过渡期对于奶牛来说至关重要,它涉及显著的生理,营养和社会调整.
- 了解原生 (第一小牛) 和多生 (多小牛) 奶牛之间的营养消化率差异对于优化群体健康和生产率至关重要.
研究的目的:
- 在过渡期内,评估和比较原生 (PP) 和多生 (MP) 奶牛之间的营养总通道消化率 (nTTD).
- 为了识别特定的营养分数,表现出基于平价的不同消化能力.
主要方法:
- 在多个时间点 (-23, -5, 0, 7, 14, 30天相对于分娩) 从25只荷尔斯坦牛 (11 PP, 14 MP) 收集了料和便样本.
- 使用加速度计来测量每日反时间.
- 计算了各种成分的营养物质总通道可消化性 (nTTD),包括粉酶处理的中性清洁剂纤维有机物 (aNDFom),潜在可消化的中性清洁剂纤维 (pdNDF) 和粉.
主要成果:
- 与原生母牛 (p ≤ 0.02) 相比,多母牛对aNDFom (54.0%对52.5%) 和pDNDF240 (81.3%对78.8%) 的nTTD显著更高.
- 对于pdNDF24或粉,在PP和MP奶牛之间没有观察到nTTD的显著差异.
- 在采样时间点 (p < 0.01) 中,总通道粉的消化能力有显著的变化,从分娩后的-23天增加到14天.
结论:
- 纤维消化能力,特别是aNDFom和pdNDF240,在过渡期的多胞胎母牛中更高,可能是由于牛保留时间的差异.
- 营养消化能力的这些平价特异性差异需要为初生和多生母奶牛量身定制的食配方策略.
更多相关视频
相关概念视频
Intestinal Phase of Digestion
5.2K
The intestinal phase of digestion is the third and final stage of the digestive process, occurring after the cephalic and gastric phases. It begins when chyme, a partially digested mixture of food and digestive enzymes, enters the small intestine from the stomach. This phase is crucial for nutrient absorption and involves complex hormonal and enzymatic interactions.
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
5.2K
Tonicity in Animals
3.1K
Tonicity describes the amount of solute in a solution. The measure of the tonicity of a solution, or the total amount of solutes dissolved in a specific amount of solution, is called its osmolarity. Three terms—hypotonic, isotonic, and hypertonic—are used to relate the osmolarity of a cell to the osmolarity of the extracellular fluid that contains the cells. In a hypotonic solution, such as tap water, the extracellular fluid has a lower concentration of solutes than the fluid inside...
3.1K
Parentral Nutrition: Centeral and Peripheral Parental Nutrition
201
Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
201
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
348
Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
348
Key Elements for Plant Nutrition
18.8K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.8K
Absorption of Nutrients
670
Absorption refers to taking dietary nutrients from the intestinal lumen for transportation throughout the body. After digestion in the small intestine, carbohydrates, proteins, and fats are broken down into simpler forms. These essential macronutrients and other vital substances, such as vitamins, minerals, and water, are then prepared for absorption into the bloodstream.
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
670


