The effects of inclusion levels of urea‐treated potato pulp silage in concentrate and roughage sources on finishing performance and carcass quality in cull beef cows

Abstract

An experiment was conducted to determine the effects of inclusion levels of potato pulp silage in concentrate (0, 15, 30 or 45%; on a dry matter basis) and roughage sources (rice straw or wheat straw) on finishing performance and carcass quality of cull beef cows. Sixteen Japanese Black (Wagyu) mature cull cows (490 +/- 31 kg of BW) were used in this experiment. Increasing the levels of potato pulp silage in concentrate and roughage sources did not significantly affect feed intake in cows. In addition, the final body weight, daily gain and feed : gain ratio were not influenced by the inclusion levels of potato pulp silage in concentrate and the type of roughage. Increasing the inclusion levels of potato pulp silage in concentrate would probably decrease the marbling score. The L* values of the longissimus muscle (LM) tended to respond quadratically (P = 0.078) as the inclusion levels of potato pulp silage in concentrate increased, and was lowest for cows fed the concentrate which included 30% potato pulp silage. The a* and b* values of the LM and fat color were not affected by the inclusion levels of potato pulp silage in concentrate. No effects of roughage sources on finishing performance were observed.

Effects of days on feed, roughage sources and inclusion levels of grain in concentrate on finishing performance and carcass characteristics in cull beef cows

“…Furthermore, there is a positive correlation between the marbling score and L* values of meat (Wulf et al . 1997; Sugimoto et al . 2009).…”

“…Boles et al (2004) indicated that the increase in lightness could be associated with antemortem muscle glycogen content and its relationship with the ultimate pH or rate of pH decline post mortem. Furthermore, there is a positive correlation between the marbling score and L* values of meat (Wulf et al 1997;Sugimoto et al 2009). This relationship between L* and intramuscular fat content could be explained by the fact that fat is generally white and L* is a value on an axis from black to white (Wulf & Wise 1999).…”

Growth performance, carcass traits, physiochemical characteristics and intramuscular fatty acid composition of finishing Japanese black steers fed soybean curd residue and soy sauce cake

“…) and diet (Sugimoto et al . ). The meat color shows redder tonalities in older cattle because the myoglobin content of the muscles increases with age.…”

Chemical Composition and Fermentation Characteristics of Silages of Potato, Sweet Potato and Turnip with Rice Straw and Studies the Effect of Rations Containing Its Silages on Performance and Economical Efficiency of Growing Lambs

“…The best economical efficiency was recorded with ration D (1.69) followed rations B, C and A. Sugimoto et al (2009) and Aibibula et al (2007) mentioned that potato pulp silage can be low-cost feed source for livestock feeding. Generally, the price of potato, sweet potato and turnip and consequently its silages is directly affect feed cost and economical efficiency of the rations when compared with price of traditional feed ingredients.…”

“…Nkosi and Ratsaka (2010) found that feed conversion was 10.2 of lambs fed ration containing 22.5% silage of potato hash and hay + CFM. Potato pulp can be low cost feed sources for livestock (Sugimoto et al, 2009). This work aimed to study the effect of rations containing silages of non-commercial potato tubers, sweet potato roots, and turnip roots with rice straw on lamb's performance and its economical efficiency.…”