Feed sorting and intake affected by the physical form and composition of the total mixed ration in dairy cows

Abstract

This study observes the effects of manipulating the diet in its physical form and in cereal composition of the concentrate on sorting behaviour, feed intake, composition of milk, and degree of discomfort in dairy cows. In a commercial dairy farm with 360 mid-lactation Holstein cows (averaged 105 days), three treatments of feeding handling were applied sequentially during 120 days, each separated by periods of 30 days of resting: (1) Time of chopping of the total mixed ration (TMR): 15min (N= 180) and 23min (N= 180), (2) Physical form of the concentrate: meal (N= 180) and pellet (N= 180), and (3) Cereal composition in the concentrate: mix of corn, barley and wheat in traditional proportions (3.6:1:1) (N= 120), barley only (N= 120) and corn only (N= 120). Animals feeding TMR chopped for 23min selected less and consumed more ration, and had more milk protein and less discomfort than cows feeding TMR chopped for 15min. The physical form of the concentrate, meal or pellet, did not affect feed sorting, but the meal form resulted in greater feed intake and milk fat percentage. The type of cereal in the concentrate did not affect feed sorting but affected feed intake, milk yield and milk composition. In conclusion, it is recommended using TMR chopped during 23min instead of 15min and using the traditional mix of cereals in the concentrate (corn, barn and wheat) instead of using only one cereal.

Effects of Feeding Management on Milk Yield and Composition Traits in Crossbred Jersey Cows

“…In addition, some authors (Gonzalez et al, 2015) indicated that rations with low fiber may lead to reduced milk fat content and to avoid fat depression of milking cows, minimum of 25% dietary neutral detergent fiber (NDF) was suggested. As known, all the dairy feeding strategies are performed by estimating feed intake capacity and performance of the dairy cows (Tarkowski, 2008).…”

Toplam Karma Yemle Beslenen Besi Sığırlarında Fiziksel Etkin Nötral Deterjan Lifin Büyüme Performansına ve Sindirilebilirlik Üzerine Etkisi

“…Growth performance and digestibility are essential factors that are related to the physical effectiveness of a ration or feeding ingredients. Excessive amount of long fibres could limit dry matter intake and digestibility, as a short particle size decreases chewing activity and results in a decline of saliva production and rumen pH [18] . Especially regarding this concern, several studies have been conducted on dairy cows [8,19,20] , beef cattle [7,21] and goats [22] .…”

Semi-automated double sided livestock (SADSL) mix feeder

“…Although, the solution for monitoring and control the cattle farm operation and environmental condition available [11][12][13][14][15][16] but the existing are still lacking of an automated feeder system. An effient feeding system can produce cattle that are physical and geneticly healthy [17][18][19][20]. Nowadays, healthy cattle that are well feed can be monitored using computer vison to gauge further the amount of food taken by each individual cattle [21][22][23][24][25].…”