Effect of ear-corn silage on milk production and volatile compounds of milk in lactating cows

Abstract

Corresponding : Yasuko UEDA (fax : ＋81 (0) 11-859-2178, e-mail : okabeys@affrc.go.jp) Two feeding trials were carried out to investigate the effects of ensiled ear-corn harvested by selfpropelled forage harvester on DM intake, milk production and composition, and volatile compounds of milk compared with imported flaked corn for lactating cows. A 3 × 3Latin square study was conducted with 6 Holstein cows each trial. Dietary treatments were flaked corn (FC), flaked corn and ear-corn silage (MIX), and ear-corn silage (ECS) with grass silage (trial 1), grass and corn silage (trial 2). Diets with ECS (15%, 10% of each diets substituted of FC in trials 1 and 2, respectively) did not affect on DM intake, milk yield, milk composition, or blood property. γ-decalactone and γ-dodecalactone in detected volatile compounds of milk were higher with the ECS diet than the FC diet in trial 1. There were no significant differences in lactones in trial 2 with corn silage as base roughage. There results indicated that, compared to FC, feeding ECS had not change intake and milk production but had an effect on lactones in milk.Nihon Chikusan Gakkaiho 85 (3), [301][302][303][304][305][306][307] 2014

Effect of Pasture Intake on the Profile of Volatile Organic Compounds in Dairy Cow Milk

“…Keen (1998) showed that a European-type diet consisting largely of concentrates (with both starch and fatty acid precursors, i.e., grain, meals, among others) promoted the formation of γ-lactone precursors in the rumen. In addition, Ueda et al (2014) reported that milk from cows fed corn silage had a high content of lactones. Thus, it seems that the amount of concentrate or corn silage in the feed affects the content of lactones in the milk.…”

Effects of ear corn silage supplementation on milk production and milk fatty acid profiles in grazing dairy farms

“…Milk composition parameters including milk fat, milk protein, lactose, and solids not fat content also changed with seasonal progress (p < .01) but did not differ between the ECS and non-ECS farms. In a study comparing the supply of ECS and flaked dry corn for lactating cows fed silage-based diets (Tada et al, 2018;Ueda et al, 2014), there was no difference in milk yield or milk composition.…”

“…Among these type of feed, the production of ear corn silage (ECS) has been growing in prevalence within TMR centers and contractor organizations in Hokkaido, since ECS has high nutritive value and fermentation qualities (Oshita, Nemoto, Aoki, Ueda, & Aoki, 2016; Otsu et al., 2012). Milk production from cows fed with ECS supplement in silage‐based feeding was equal to that from cows fed with a flaked dry corn supplement (Aoki, Oshita, Ueda, Nemoto, & Aoki, 2016; Tada, Aoki, & Oshita, 2018; Ueda et al., 2014).…”

“…Furthermore, studies have shown that the milk FA profile is strongly related to the feeding management of dairy cows, as the using milk FA profile was able to discriminate the feeding management on farms (Capuano et al, 2014;Mitani, Kobayashi, Ueda, & Kondo, 2016;Vicente, Santiago, Jimenez-Calderon, & Martinez-Fernandez, 2017). Ueda et al (2014) reported that the γ-lactone concentration in milk increased upon substitution of ECS for flaked dry corn in cows fed silage-based diets. The milk FA profile in the study (Ueda et al, 2014) should also change, because many flavor components in milk are derived from FAs.…”

“…Ueda et al (2014) reported that the γ-lactone concentration in milk increased upon substitution of ECS for flaked dry corn in cows fed silage-based diets. The milk FA profile in the study (Ueda et al, 2014) should also change, because many flavor components in milk are derived from FAs. However, the effect of ECS supplementation for grazing dairy cows on the milk FA profile has not been investigated.…”