China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (3): 916-924.doi: 10.16431/j.cnki.1671-7236.2021.03.015

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Nutritional Characteristics of Sunflower By-products and Its Application in Ruminants

ZHANG Jia1,2, WANG Yuan1,2, AN Xiaoping1,2, QI Jingwei1,2   

  1. 1. College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China;
    2. Inner Mongolia Herbivorous Livestock Feed Engineering and Technology Research Center, Hohhot 010018, China
  • Received:2020-09-07 Online:2021-03-20 Published:2021-03-18

Abstract: The shortage of feed resources has always been the main factor restricting the development of animal husbandry industry in China.In long term,conventional feed can no longer maintain the sustainable development of China's animal husbandry,and the development of new feed resources is one of the important ways to solve the shortage of feed.Sunflower by-products have high nutritional value,wide source and low price,which is a new type of feed with great development value.Sunflower by-products include sunflower cake,sunflower disk,sunflower stalk and kernel shells.Sunflower cake is high in crude protein content,low fiber content,is a high-quality plant protein source,can improve the nutritional value of cow milk,promote the growth of beef cattle,improve the fermentation effect of sheep rumen.Sunflower disk is high in crude fat content,containing a large number of dietary fiber,can improve the milk yield and milk fat rate of cows,promote beef cattle weight gain,improve the concentration of rumen volatile fatty acids and the digestion of crude protein,crude fiber and neutral detergent fiber.Sunflower stalk is rich in nitrogen,phosphorus,potassium,calcium,magnesium and other mineral elements and a small amount of protein,can provide some constant elements and trace elements for cattle,improve the daily weight gain of sheep,reduce the feed to gain ratio.Kernel shells are mainly composed of cellulose and lignin,rich in biology active substances which can improve daily cow weight gain and beef feed conversion rate.The nutritional value of sunflower by-products including sunflower cake,sunflower disk,sunflower stalk and kernel shell,and their application in ruminant feed at present were introduced in detail,so as to provide theoretical basis for the development and utilization of sunflower by-products in the future.

Key words: nutritional characteristics; sunflower by-products; ruminants; amino acid

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