干旱区生态环境知识资源中心(Arid): Feed digestibility, digesta passage and faecal microbial biomass in desert-adapted goats exposed to mild water restriction

Arid

DOI	10.1111/jpn.13597
	Feed digestibility, digesta passage and faecal microbial biomass in desert-adapted goats exposed to mild water restriction
	Ramadhan, M. R.; Schlecht, E.; Dickhoefer, U.; Mahgoub, O.; Joergensen, R. G.
通讯作者	Schlecht, E (corresponding author), Univ Kassel, Anim Husb Trop & Subtrop, Steinstr 19, D-37213 Witzenhausen, Germany. ; Schlecht, E (corresponding author), Georg August Univ Gottingen, Steinstr 19, D-37213 Witzenhausen, Germany.
来源期刊	JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
ISSN	0931-2439
EISSN	1439-0396
出版年	2021-07
英文摘要	In arid and semi-arid environments, extensively managed ruminants regularly experience drinking water shortage, especially in the dry season. The present study therefore investigated the effects of mild drinking water restriction on feed intake, feed digestibility, solid digesta passage and composition of faeces including faecal microbial biomass. A feeding trial was conducted in Oman, during the dry summer months. Nine adult male Batinah goats were subjected to three watering regimes in a 3 x 3 Latin Square design. Treatments were (1) water offered ad libitum (100%, W100); (2) water restricted to 85% ad libitum consumption (W85); and (3) water restricted to 70% ad libitum consumption (W70). Animals were offered Rhodes grass hay and whole barley grains (1:1 ratio) at 1.3 times maintenance energy requirements. Each of the three experimental periods comprised 16 days of adaptation and 8 days of measurements. During the latter, feed offered and refused as well as faeces were sampled and quantified. Gastrointestinal digesta passage was determined using ytterbium-labelled Rhodes grass hay. Ergosterol and amino sugars were used as markers for faecal microbial biomass, that is the sum of fungi and bacteria. Water restriction had no effect on feed intake and digesta passage. However, feed dry matter, organic matter and fibre digestibility increased (p < 0.05) in W70 compared with W85, and the excreted amount of faecal dry matter, organic matter, nitrogen and neutral detergent fibre decreased (p < 0.05) in W70 compared with W85. Even though water restriction did not affect total faecal microbial biomass carbon (C) concentration, that of fungal biomass C increased (p < 0.05) in W70 compared with W85. Therefore, mild water restriction seems unproblematic from a physiological and nutrient utilization perspective as it increases feed digestibility without compromising feed intake.
英文关键词	amino sugars Batinah goats ergosterol faecal microbial composition rumen retention water consumption
类型	Article ; Early Access
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000674227600001
WOS关键词	NITROGEN-BALANCE ; PHYSIOLOGICAL-RESPONSES ; NUTRIENT DIGESTIBILITY ; HEAT-STRESS ; MATTER ; ADAPTATION ; SCARCITY ; DIET ; SOIL ; DRY
WOS类目	Agriculture, Dairy & Animal Science ; Veterinary Sciences
WOS研究方向	Agriculture ; Veterinary Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363723
作者单位	[Ramadhan, M. R.; Schlecht, E.] Univ Kassel, Anim Husb Trop & Subtrop, Steinstr 19, D-37213 Witzenhausen, Germany; [Ramadhan, M. R.; Schlecht, E.] Georg August Univ Gottingen, Steinstr 19, D-37213 Witzenhausen, Germany; [Dickhoefer, U.] Univ Hohenheim, Hans Ruthenberg Inst, Inst Agr Sci Trop, Nutr & Rangeland Management Trop & Subtrop, Stuttgart, Germany; [Mahgoub, O.] Sultan Qaboos Univ, Coll Agr & Marine Sci, Muscat, Oman; [Joergensen, R. G.] Univ Kassel, Soil Biol & Plant Nutr, Witzenhausen, Germany
推荐引用方式 GB/T 7714	Ramadhan, M. R.,Schlecht, E.,Dickhoefer, U.,et al. Feed digestibility, digesta passage and faecal microbial biomass in desert-adapted goats exposed to mild water restriction[J],2021.
APA	Ramadhan, M. R.,Schlecht, E.,Dickhoefer, U.,Mahgoub, O.,&Joergensen, R. G..(2021).Feed digestibility, digesta passage and faecal microbial biomass in desert-adapted goats exposed to mild water restriction.JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION.
MLA	Ramadhan, M. R.,et al."Feed digestibility, digesta passage and faecal microbial biomass in desert-adapted goats exposed to mild water restriction".JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION (2021).