饲粮蛋白质和能量水平对泌乳水牛生产和繁殖性能的影响。

IF 0.5 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE
H. Gaafar, E. Abdel-Raouf, M. Bendary, G. Ghanem, K. El-Riedy
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引用次数: 1

摘要

选用28头泌乳水牛,采用2×2因子设计,采用完全随机设计,分别饲喂低蛋白-低能(LP-LE)、低蛋白-高能(LPHE)、高蛋白-低能(HP-LE)和高蛋白-高能(HP-HE) 4种试验饲料。结果表明:高phe饲粮的粗蛋白质、粗脂肪、粗蛋白质、营养价值、总脂肪和粗蛋白质的消化系数最高,而低hp饲粮的粗脂肪消化系数最高(P<0.05)。HP-HE饲粮的实际产奶量最高(P<0.05),脂肪含量最高(P<0.05),乳中蛋白质、乳糖、SNF和TS含量最高(P<0.05)。HP-HE饲粮每kg 7% FCM DM和TDN含量最低,LP-HE饲粮每kg 7% FCM DCP含量最低(P<0.05)。低脂-高脂饲粮的平均日饲料成本最低,而高脂-高脂饲粮的饲料成本最低,总收益和经济效益最高(P<0.05)。HP-HE饲粮的水牛从分娩到首次发情和首次受胎期短,受胎期短,开胎天数短,单胎受胎次数最少,受胎率最高(P<0.05)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of dietary protein and energy levels on productive and reproductive performance of lactating buffaloes.
Twenty eight lactating buffaloes were used in a completely randomized design with 2×2 factorial arrangement of four experimental diets including low protein-low energy (LP-LE), low protein-high energy (LPHE), high protein-low energy (HP-LE) and high protein-high energy (HP-HE). Results showed that the HPHE diet recorded the highest digestibility coefficients of CP, EE, NFE, nutritive values, TDN and DCP intake, while HP-LE diet had the highest CF digestibility (P<0.05). The HP-HE diet had the highest (P<0.05) actual milk and 7% FCM yield and the contents of protein, lactose, SNF and TS in milk, HP-LE diet had the highest fat content (P<0.05). The HP-HE diet showed the lowest amounts of DM and TDN per kg, 7% FCM, while LP-HE diet had the lowest amount of DCP per kg 7% FCM (P<0.05). The LP-HE diet recorded the lowest average daily feed cost, while HP-HE diet showed the lowest feed cost/kg 7% FCM and the highest total revenue and economic efficiency (P<0.05). Buffaloes fed HP-HE diet showed short periods from parturition to first estrus and first service, service period, days open, the lowest number of services per conception and the highest conception rate (P<0.05).
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来源期刊
Iranian Journal of Applied Animal Science
Iranian Journal of Applied Animal Science AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
1.40
自引率
0.00%
发文量
0
审稿时长
8 weeks
期刊介绍: Iranian Journal of Applied Animal Science (IJAS) is an international journal publishing Research Articles (Full-Length Original Scientific Papers), Short Communications and Review on animal sciences, and related areas. The journal covers all related topics of Animal Science. Papers are welcome reporting studies in all aspects of animal science including: - Animal breeding and genetics (such as quantitative and molecular analysis of animal performance, genetic improvement and resources, genetics of physiological process, selection schemes for economic animal improvement, impact on animal health, etc) - Animal feeding and nutrition (such as food intake, digestion, nutrigenomics/nutrient: gene interactions, metabolism and metabolomics, nutritional control of function and performance, feed evaluation and feeding, diet and animal health) - Animal reproduction - Animal biotechnology - Animal physiology and functional biology of systems (such as reproductive and developmental biology, growth, muscle biology, lactation, exercise, product composition etc) - Animal ethology, behavior and welfare (such as social and sexual behavior, animal- man relationships, adaptation, stress, impact of management and environment on health, etc) - Animal products technology - Animal management and economics - Animal products processing and animal by-products - Animal microbiology - Livestock farming systems, environmental impact and climate changes (such as sustainable livestock management systems, whole farm management strategies, animal work, systems modeling, traceability, socio-economic consequences of systems, the impact of animals on biodiversity and landscape and climate changes, etc). - Other related topics (such as engineering, farming and land-use management and to other disciplines in relation to animal science).
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