Performance and carcass characteristics of steers fed a low acid-detergent lignin hull, high-oil groat oat in growing and finishing diets

Abstract

. 2009. Performance and carcass characteristics of steers fed a low acid-detergent lignin hull, high-oil groat oat in growing and finishing diets. Can. J. Anim. Sci. 89: 521Á530. Two trials were conducted to evaluate the performance and carcass traits of steers fed a low aciddetergent lignin hull, high-oil groat (LLH-HOG) oat in cattle diets. In trial 1, 400 steers (275.4920.8 kg) were fed one of two diets with barley or LLH-HOG oat at 37.8% of the diet (DM basis). Dry matter intake (DMI) was lower (P00.02) (7.49 vs. 7.72 kg d( (1 , respectively). Ultrasound fat and longissimus dorsi (l. dorsi) area, carcass weight and dressing percentage were lower (PB 0.01) for steers fed the oat diet. Stearic acid content of the l. dorsi of oat-fed cattle was greater (PB0.01) than barley-or corn-fed cattle. The ratio of polyunsaturated to saturated fatty acids in the muscle of oat-and corn-fed cattle was greater (P00.01) than that of barley-fed cattle. Results indicate that the energy value of the LLH-HOG oat is equivalent or superior to that of barley for growing cattle; however, research is required to identify why feed intake of finishing cattle fed this grain source is reduced. Mcal par kg) e´taient supe´rieures pour la ration renfermant de l'avoine. Lors du deuxie`me essai, 240 bouvillons (341,7918,1 kg) ont rec¸u une de trois rations contenant 88,2 % d'orge, de maı¨s ou d'avoine, 5,1 % d'ensilage d'orge et 6,7 % de supple´ment (selon la matie`re se`che). Durant la finition, les bouvillons nourris avec de l'avoine avaient un gain quotidien moyen plus faible (PB0,01) que celui des animaux nourris avec de l'orge ou du maı¨s (1,40, 1,69 et 1,84 kg par jour, respectivement), signe qu'ils inge´raient moins de matie`re se`che (PB0,01) (9,56, 10,84 et 11,56 kg par jour, respectivement). L'e´paisseur du gras et la superficie du l. dorsi mesure´es aux ultrasons, le poids de la carcasse et la proportion de parage e´taient plus faibles (PB0,01) chez les bouvillons nourris d'avoine. La teneur en acide ste´arique du l. dorsi e´tait plus e´leve´e (PB0,01) chez les sujets recevant de l'avoine que chez ceux nourris d'orge ou de maı¨s. Le rapport entre les acides gras polyinsature´s et sature´s dans les muscles des animaux engraisse´s a`l'avoine et au maı¨s e´tait plus e´leve´(P 00,01) que chez les bouvillons nourris d'orge. Ces re´sultats indiquent que l'avoine LLH-HOG a une valeur e´nerge´tique e´quivalente ou supe´rieure a`celle de l'orge pour les bovins en croissance, mais il faudrait entreprendre d'autres recherches afin d'e´tablir pourquoi les animaux consomment moins de cet aliment durant la finition.

Effects of processing a new low acid-detergent lignin hull, high oil groat oat cultivar (CDC SO-I) on performance of growing cattle

“…This is in contrast to the observations of Zalinko et al (2009), who noted that the efficiency of gain for growing calves fed the low lignin hull, high oil groat oat was improved by 7.5% over that of the barley-fed calves. In the current study, replacement of barley with either rolled or whole CDC SO-I oat did not appear to affect the composition of gain as cumulative USFAT and USLDA gain over the 105-d backgrounding period were not different (P 00.21) among dietary treatments (Table 2).…”

“…In contrast, Zalinko et al (2009) found that calves fed a rolled oat diet had lower DMI relative to barley-fed calves. These authors hypothesized that the fat content of the oat diet relative to rolled barley diet (5.9 vs. 3.0%) was a contributing factor to the reduced DMI.…”

“…Fuhr (2006) evaluated the feeding value of a prototype line of the CDC SO-I oat, which contained 1.1% aciddetergent lignin and 6.5% ether extract (DM basis) in early lactation dairy diets and found that milk yield of cows fed the low lignin hull, high oil groat oat tended to be higher (P 00.09) than cows fed a conventional oat variety or barley as the cereal grain. Zalinko et al (2009) evaluated the performance and carcass traits of steers fed a second prototype of the CDC SO-I oat which contained 1.0% acid detergent lignin and 9.3% ether extract (DM basis). Results of this study indicated that the energy value of the oat was equivalent or superior to barley for backgrounding cattle, and that the gain to feed ratio was improved (P B0.01) for steers fed the oatbased diet relative to barley.…”

Influence of Grain Source and Dried Corn Distillers Grains Plus Solubles Oil Concentration on Finishing Cattle Performance and Feeding Behavior

“…This negative effect on ADG during the adaptation period could potentially be reduced by increasing the time of the dietary adaptation period to the high-grain diet for cattle fed barley-based diets. However, research has also shown improved ADG in steers fed barley-based diets than cornor oat-based diets over the first 56 d on feed (Zalinko et al 2009). It is not clear as to the reasons for discrepancies between studies, but it could be because of a number of other factors including cattle age, genetics, other dietary ingredients, and environment.…”

364 The influence of grain source and dried corn distiller's grains plus solubles oil concentration on finishing cattle performance and feeding behavior

“…This negative effect on ADG during the adaptation period could potentially be reduced by increasing the time of the dietary adaptation period to the high-grain diet for cattle fed barley-based diets. However, research has also shown improved ADG in steers fed barleybased diets than corn-or oat-based diets over the first 56 days on feed (Zalinko et al 2009). It is not clear as to the reasons for discrepancies between studies, but it could be because of a number of other factors including cattle age, genetics, other dietary ingredients, environment, etc.…”