Barley- versus protein-supplemented corn-based diets for feedlot cattle evaluated using the NRC and CNCPS beef models

Koenig, K. M.; Beauchemin, K. A.

doi:10.4141/a04-029

Cited by 14 publications

(29 citation statements)

References 35 publications

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“…However, apart from marbling score, the proportions of moisture, protein and fat in the Longissimus dorsi muscle were not significantly different in the present study. Our results are in agreement with several studies over the past decade (Miller et al, 1996;Boles et al, 2005;Koenig and Beauchemin, 2005;McEwen et al, 2007), which found no differences in WarnerBratzler shear force measurements, and taste panel evaluations for tenderness, juiciness, and flavour when comparing beef from cattle finished on maize vs barley. Fiems et al (1999) also found that the proportion of rumen degradable starch in the diet had no effects on the proportions of moisture, protein and fat in the Longissimus thoracis muscle.…”

Section: Physical and Chemical Characteristics Of Longissimus Dorsi Msupporting

confidence: 93%

The growth performance and meat quality of goats fed diets based on maize or wheat grain

You¹,

Li²,

Tang³

et al. 2012

J. Anim. Feed Sci.

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A total of 24 four-month-old Liuyang Black wether goats (10±0.2 kg) were allotted to two diets based on wheat and maize to investigate effects of starch sources on the growth performance and meat quality. The experimental period lasted for 100 days, including 10 days for adaptation. Five representative goats from each group were selected for slaughter on the last experimental day. The final body weight and body weight gain of goats in wheat group were lower than those of goats in maize group (P<0.05), however, the marbling score of the Longissimus dorsi of goats in wheat group was greater than that of goats in maize group (P<0.05). Fatty acid composition of Longissimus dorsi muscle was also different between wheat group and maize group, for example, the proportion of C14:0 in Longissimus dorsi muscle of goats in wheat group was greater than that of goats in maize group (P<0.05), and the proportion of C18:3 in Longissimus dorsi muscle of goats in wheat group was smaller than that of goats in maize group. Results indicate that growth performance of the goats Journal of Animal and Feed Sciences, 21, 2012, 587-598 588 MEAT QUALITY OF GOATS AND STARCH SOURCES fed the diet based on maize was better and the proportion of 18:3 fatty acids and marbling score of Longissimus dorsi muscle was smaller in comparison with the goats fed the diet based on wheat.

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Section: Physical and Chemical Characteristics Of Longissimus Dorsi Msupporting

confidence: 93%

The growth performance and meat quality of goats fed diets based on maize or wheat grain

You¹,

Li²,

Tang³

et al. 2012

J. Anim. Feed Sci.

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“…Overall, the results for carcass traits are interpreted to indicate that there were very few differences in carcass composition between barley and corn-fed cattle which supports our previous studies (Beauchemin et al 1997;Koenig and Beauchemin 2005). However, supplementing a corn diet with CGF resulted in carcasses that were fatter with less lean meat yield, which could be an economically important disadvantage for CGF.…”

Section: Animal Performance and Carcass Traitssupporting

confidence: 87%

“…In a previous experiment we reported that gain of cattle fed an unsupplemented dry-rolled corn diet (10% CP) was consistently lower during the entire feeding period compared with cattle fed higher protein diets (Koenig and Beauchemin 2005). In that study the cattle started at about the same weight as cattle in the present study, but final weight was lower (612 kg).…”

Section: Animal Performance and Carcass Traitssupporting

confidence: 50%

“…Metabolizable protein represents the sum of the microbial CP synthesized in the rumen, feed protein that escapes degradation in the rumen, and endogenous protein. In our previous study (Koenig and Beauchemin 2005), both the NRC (1996) and the CNCPS (version 5.0) models predicted the substantially lower gain of cattle fed the unsupplemented corn diet relative to the protein-supplemented corn diets, but only after intake was reduced in the model to reflect the negative effects of ruminal N limitation on ruminal digestion and passage rate. Neither model predicted the improvement in feed:gain ratio observed when corn diets were supplemented with a combination of canola meal and urea rather than urea alone.…”

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confidence: 93%

“…In a previous study, we reported that growth rates of feedlot finishing cattle fed steam-rolled barley or dry-rolled corn diets formulated to supply at least 13% CP (DM) were similar (Koenig and Beauchemin 2005). However, feeding an unsupplemented corn diet containing 10% CP substantially lowered growth rate of feedlot cattle due to reduced DMI.…”

mentioning

confidence: 95%

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Feedlot cattle diets based on barley or corn supplemented with dry corn gluten feed evaluated using the NRC and CNCPS beef models

Beauchemin¹,

Koenig²

2005

Can. J. Anim. Sci.

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. 2005. Feedlot cattle diets based on barley or corn supplemented with dry corn gluten feed evaluated using the NRC and CNCPS beef models. Can. J. Anim. Sci. 85: 365-375. A study was conducted to evaluate the effects of supplementing feedlot finishing corn diets with dry corn gluten feed (CGF). Animal performance and carcass traits were compared with those obtained by feeding a barley-based diet typical of diets fed commercially in western Canadian feedlots. The second objective of the experiment was to evaluate the diets using the 1996 National Research Council (NRC) Beef (level 1 and 2) and Cornell Net Carbohydrate and Protein System (CNCPS, version 5.0) models to determine how well the models predict animal response. Crossbred beef steers (248) weighing 423 ± 20.5 kg were allocated to 24 pens and then six pens were assigned to each of four diets: (1) barley grain (13.8% crude protein, CP), (2) corn grain (9.2% CP), (3) corn grain supplemented with a low level (7%, DM basis) of CGF (CGF-low, 9.7% CP), and (4) corn grain supplemented with a high level (23%) of CGF (CGF-high, 11.7% CP). The barley grain was steam-rolled and the corn grain was dry-rolled. All diets contained 8% barley silage (DM basis). The cattle were adapted from a backgrounding diet to the experimental diets over a period of 28 d and then fed for a period of 136 d. During the adaptation phase cattle fed unsupplemented corn grew slower (P < 0.05) than the cattle fed the other diets (1.23 vs. 1.52 kg d -1 ). However, after day 42 of the study, cattle fed unsupplemented corn grew very rapidly such that gain for the entire feeding period was similar for cattle fed unsupplemented corn and barley diets (1.62 vs. 1.58, P > 0.05). Furthermore, growth rate was higher (P < 0.05) for cattle fed barley or unsupplemented corn than for cattle fed low or high levels of CGF (1.48 and 1.45 kg d -1 , respectively). The dry matter intake (DMI) averaged 11.4 kg d -1 during the feeding period and was not affected (P > 0.05) by diet. Feed:gain ratio (kg DM:kg gain) was similar (P > 0.05) for cattle fed barley (7.09) and unsupplemented corn (7.38), but was higher (P < 0.05) for cattle fed CGF-high (7.92), and intermediate (P > 0.05) for those fed CGF-low (7.52). There were no differences in carcass composition between barley and corn-fed cattle, but those fed low and high levels of CGF had carcasses that were fatter with lower lean meat yield. The three models underestimated DMI of all four diets. When DMI was set to observed intake in the models, CNCPS accurately predicted ADG and F:G ratio for cattle fed corn diets, but all models underestimated ADG of cattle fed barley. All models correctly predicted that gain during the feeding period was not limited by protein supply. The results from this study indicate that rolled-corn diets containing about 9.5% CP, with 50% of the CP as DIP are adequate for feedlot cattle weighing more that 500 kg. Substituting dry CGF for corn grain reduces feed efficiency and gain due to the lower digestible energy content of CGF. (2) ma...

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Meal Nutrition and Utilization

Arntfield

Hickling

2011

Canola

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Barley- versus protein-supplemented corn-based diets for feedlot cattle evaluated using the NRC and CNCPS beef models

Cited by 14 publications

References 35 publications

The growth performance and meat quality of goats fed diets based on maize or wheat grain

The growth performance and meat quality of goats fed diets based on maize or wheat grain

Feedlot cattle diets based on barley or corn supplemented with dry corn gluten feed evaluated using the NRC and CNCPS beef models

Meal Nutrition and Utilization

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