Associations of rumen parameters with feed efficiency and sampling routine in beef cattle
نویسندگان
چکیده
منابع مشابه
Whole genome single nucleotide polymorphism associations with feed intake and feed efficiency in beef cattle.
Feed intake and efficiency are economically important traits because feed is the greatest variable cost in beef production. Feed efficiency can be measured as residual feed intake (RFI), which is the difference between actual DMI of an animal and the expected DMI based on its BW and growth rate. Feed conversion ratio (FCR) is the inverse of gross feed efficiency and is the ratio of DMI to ADG. ...
متن کاملDefining Feed Efficiency in Beef Cattle
Most breeding programs have focused on improving economically relevant output traits such as growth, carcass quality and fertility to enhance the economic viability of beef production systems. Generally absent from current breeding programs in the U.S. are avenues for exploiting genetic variation in feed efficiency, even though reductions in feed inputs would substantially improve profitability...
متن کاملAssessment of microbiome changes after rumen transfaunation: implications on improving feed efficiency in beef cattle
BACKGROUND Understanding the host impact on its symbiotic microbiota is important in redirecting the rumen microbiota and thus improving animal performance. The current study aimed to understand how rumen microbiota were altered and re-established after being emptied and receiving content from donor, thus to understand the impact of such process on rumen microbial fermentation and to explore th...
متن کاملSmall intestine histomorphometry of beef cattle with divergent feed efficiency
BACKGROUND The provision of feed is a major cost in beef production. Therefore, the improvement of feed efficiency is warranted. The direct assessment of feed efficiency has limitations and alternatives are needed. Small intestine micro-architecture is associated with function and may be related to feed efficiency. The objective was to verify the potential histomorphological differences in the ...
متن کاملGenetic improvement in feed efficiency in beef cattle
Net feed conversion efficiency (NFCE) describes whether an animal eats more or less feed than expected for its size and growth rate. Early results from the Trangie NFCE Project, and from the Beef CRC, show that considerable variation in NFCE exists within each of the British breeds tested and is moderately heritable. Estimates of heritability for average daily gain, 365-day weight, feed intake,...
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ژورنال
عنوان ژورنال: Animal
سال: 2018
ISSN: 1751-7311
DOI: 10.1017/s1751731117002750