This study was designed to investigate whether dietary neutral detergent fiber (NDF) : starch ratio could be considered as a nutritional indicator to evaluate carbohydrate composition and manipulate milk production and composition synthesis. Eight primiparous dairy cows were assigned to four total mixed rations with NDF : starch ratios of 0.86 1.18 1.63 and 2.34 from T1 to T4 in a replicated 4 × 4 Latin square design. Dry matter intake and milk production were decreased from T1 to T4. Digestibility of dry matter organic matter NDF and crude protein were linearly decreased from T1 to T4. As NDF : starch ratio increased milk protein content and production and milk lactose content and production were linearly reduced. However milk fat content was linearly increased from T1 to T4. Quadratic effect was observed on milk fat production with the highest level in T3. Averaged rumen pH was linearly increased from T1 to T4 and subacute rumen acidosis occurred in T1. Ruminal propionate and butyrate concentration were linearly decreased and microbial crude protein and metabolizable protein decreased from T1 to T4. It is concluded that NDF : starch ratio can be considered as a potential indicator to evaluate dietary carbohydrate composition and manipulate milk production and composition synthesis.
{{menu_about_desc}}
Explore eventos futuros e passados em todo o mundo e online, sejam hospedados pelo CIFOR-ICRAF ou com a participação de nossos pesquisadores.
Découvrez les évènements passés et à venir dans le monde entier et en ligne, qu’ils soient organisés par le CIFOR-ICRAF ou auxquels participent nos chercheurs.
Jelajahi acara-acara mendatang dan yang telah lalu di lintas global dan daring, baik itu diselenggarakan oleh CIFOR-ICRAF atau dihadiri para peneliti kami.
Explore eventos futuros y pasados organizados por CIFOR-ICRAF o con la participación de nuestros investigadores.
{{menu_nowledge_desc}}.
{{menu_research_desc}}
{{menu_about_desc}}
CIFOR–ICRAF achieves science-driven impact. We conduct innovative research, strengthen partners’ capacity and actively engage in dialogue with all stakeholders, bringing the latest insights on forests, trees, landscapes and people to global decision making.
CIFOR–ICRAF publishes over 750 publications every year on agroforestry, forests and climate change, landscape restoration, rights, forest policy and much more – in multiple languages.
Explore upcoming and past events across the globe and online, whether hosted by CIFOR-ICRAF or attended by our researchers.
CIFOR–ICRAF addresses local challenges and opportunities while providing solutions to global problems for forests, landscapes, people and the planet.
We deliver actionable evidence and solutions to transform how land is used and how food is produced: conserving and restoring ecosystems, responding to the global climate, malnutrition, biodiversity and desertification crises. In short, improving people’s lives.
